solve schema validation conflicts

pkg/log/log.go

@@ -0,0 +1,295 @@
+package log
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strconv"
+	"sync"
+	"time"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+	"github.com/rs/zerolog"
+	"gopkg.in/natefinch/lumberjack.v2"
+)
+
+type level string
+
+type destinationType string
+
+type destination struct {
+	Type   destinationType   `yaml:"type"`
+	Config map[string]string `yaml:"config"`
+}
+
+// Destination types for logging output.
+const (
+	Stdout destinationType = "stdout"
+	File   destinationType = "file"
+)
+
+// Log levels define the severity of log messages.
+const (
+	DebugLevel level = "debug"
+	InfoLevel  level = "info"
+	WarnLevel  level = "warn"
+	ErrorLevel level = "error"
+	FatalLevel level = "fatal"
+	PanicLevel level = "panic"
+)
+
+var logLevels = map[level]zerolog.Level{
+	DebugLevel: zerolog.DebugLevel,
+	InfoLevel:  zerolog.InfoLevel,
+	WarnLevel:  zerolog.WarnLevel,
+	ErrorLevel: zerolog.ErrorLevel,
+	FatalLevel: zerolog.FatalLevel,
+	PanicLevel: zerolog.PanicLevel,
+}
+
+// Config represents the configuration for logging.
+type Config struct {
+	Level        level              `yaml:"level"`
+	Destinations []destination      `yaml:"destinations"`
+	ContextKeys  []model.ContextKey `yaml:"contextKeys"`
+}
+
+var (
+	logger zerolog.Logger
+	cfg    Config
+	once   sync.Once
+)
+
+// Logger instance and configuration.
+var (
+	ErrInvalidLogLevel   = errors.New("invalid log level")
+	ErrLogDestinationNil = errors.New("log Destinations cant be empty")
+	ErrMissingFilePath   = errors.New("file path missing in destination config for file logging")
+)
+
+func (config *Config) validate() error {
+	if _, exists := logLevels[config.Level]; !exists {
+		return ErrInvalidLogLevel
+	}
+
+	if len(config.Destinations) == 0 {
+		return ErrLogDestinationNil
+	}
+
+	for _, dest := range config.Destinations {
+		switch dest.Type {
+		case Stdout:
+		case File:
+			if _, exists := dest.Config["path"]; !exists {
+				return ErrMissingFilePath
+			}
+
+			for _, key := range []string{"maxSize", "maxBackups", "maxAge"} {
+				if valStr, ok := dest.Config[key]; ok {
+					if _, err := strconv.Atoi(valStr); err != nil {
+						return fmt.Errorf("invalid %s: %w", key, err)
+					}
+				}
+			}
+		default:
+			return fmt.Errorf("invalid destination type '%s'", dest.Type)
+		}
+	}
+	return nil
+}
+
+var defaultConfig = Config{
+	Level: InfoLevel,
+	Destinations: []destination{
+		{Type: Stdout},
+	},
+}
+
+func init() {
+	logger, _ = getLogger(defaultConfig)
+}
+
+func getLogger(config Config) (zerolog.Logger, error) {
+	var newLogger zerolog.Logger
+	var writers []io.Writer
+	for _, dest := range config.Destinations {
+		switch dest.Type {
+		case Stdout:
+			writers = append(writers, os.Stdout)
+		case File:
+			filePath := dest.Config["path"]
+			dir := filepath.Dir(filePath)
+			if err := os.MkdirAll(dir, os.ModePerm); err != nil {
+				return newLogger, fmt.Errorf("failed to create log directory: %v", err)
+			}
+			lumberjackLogger := &lumberjack.Logger{
+				Filename: filePath,
+				Compress: false,
+			}
+			absPath, err := filepath.Abs(filePath)
+			if err != nil {
+				return newLogger, fmt.Errorf("failed to get absolute path: %v", err)
+			}
+			lumberjackLogger.Filename = absPath
+
+			setConfigValue := func(key string, target *int) {
+				if valStr, ok := dest.Config[key]; ok {
+					if val, err := strconv.Atoi(valStr); err == nil {
+						*target = val
+					}
+				}
+			}
+			setConfigValue("maxSize", &lumberjackLogger.MaxSize)
+			setConfigValue("maxBackups", &lumberjackLogger.MaxBackups)
+			setConfigValue("maxAge", &lumberjackLogger.MaxAge)
+			if compress, ok := dest.Config["compress"]; ok {
+				lumberjackLogger.Compress = compress == "true"
+			}
+			writers = append(writers, lumberjackLogger)
+		}
+	}
+	multiwriter := io.MultiWriter(writers...)
+	defer func() {
+		if closer, ok := multiwriter.(io.Closer); ok {
+			closer.Close()
+		}
+	}()
+	newLogger = zerolog.New(multiwriter).
+		Level(logLevels[config.Level]).
+		With().
+		Timestamp().
+		Logger()
+
+	cfg = config
+	return newLogger, nil
+}
+
+// InitLogger initializes the logger with the given configuration.
+// It ensures that the logger is initialized only once using sync.Once.
+func InitLogger(c Config) error {
+	var initErr error
+	once.Do(func() {
+		if initErr = c.validate(); initErr != nil {
+			return
+		}
+
+		logger, initErr = getLogger(c)
+	})
+	return initErr
+}
+
+// Debug logs a debug-level message with the provided context.
+func Debug(ctx context.Context, msg string) {
+	logEvent(ctx, zerolog.DebugLevel, msg, nil)
+}
+
+// Debugf logs a formatted debug-level message with the provided context.
+func Debugf(ctx context.Context, format string, v ...any) {
+	msg := fmt.Sprintf(format, v...)
+	logEvent(ctx, zerolog.DebugLevel, msg, nil)
+}
+
+// Info logs an info-level message with the provided context.
+func Info(ctx context.Context, msg string) {
+	logEvent(ctx, zerolog.InfoLevel, msg, nil)
+}
+
+// Infof logs a formatted info-level message with the provided context.
+func Infof(ctx context.Context, format string, v ...any) {
+	msg := fmt.Sprintf(format, v...)
+	logEvent(ctx, zerolog.InfoLevel, msg, nil)
+}
+
+// Warn logs a warning-level message with the provided context.
+func Warn(ctx context.Context, msg string) {
+	logEvent(ctx, zerolog.WarnLevel, msg, nil)
+}
+
+// Warnf logs a formatted warning-level message with the provided context.
+func Warnf(ctx context.Context, format string, v ...any) {
+	msg := fmt.Sprintf(format, v...)
+	logEvent(ctx, zerolog.WarnLevel, msg, nil)
+}
+
+// Error logs an error-level message along with an error object.
+func Error(ctx context.Context, err error, msg string) {
+	logEvent(ctx, zerolog.ErrorLevel, msg, err)
+}
+
+// Errorf logs a formatted error-level message along with an error object.
+func Errorf(ctx context.Context, err error, format string, v ...any) {
+	msg := fmt.Sprintf(format, v...)
+	logEvent(ctx, zerolog.ErrorLevel, msg, err)
+}
+
+// Fatal logs a fatal-level message along with an error object and exits the application.
+func Fatal(ctx context.Context, err error, msg string) {
+	logEvent(ctx, zerolog.FatalLevel, msg, err)
+}
+
+// Fatalf logs a formatted fatal-level message along with an error object and exits the application.
+func Fatalf(ctx context.Context, err error, format string, v ...any) {
+	msg := fmt.Sprintf(format, v...)
+	logEvent(ctx, zerolog.FatalLevel, msg, err)
+}
+
+// Panic logs a panic-level message along with an error object and panics.
+func Panic(ctx context.Context, err error, msg string) {
+	logEvent(ctx, zerolog.PanicLevel, msg, err)
+}
+
+// Panicf logs a formatted panic-level message along with an error object and panics.
+func Panicf(ctx context.Context, err error, format string, v ...any) {
+	msg := fmt.Sprintf(format, v...)
+	logEvent(ctx, zerolog.PanicLevel, msg, err)
+}
+
+// logEvent logs an event at the specified log level with an optional error message.
+// It adds contextual information before logging the message.
+func logEvent(ctx context.Context, level zerolog.Level, msg string, err error) {
+	event := logger.WithLevel(level)
+
+	if err != nil {
+		event = event.Err(err)
+	}
+	addCtx(ctx, event)
+	event.Msg(msg)
+}
+
+// Request logs details of an incoming HTTP request, including method, URL, body, and remote address.
+func Request(ctx context.Context, r *http.Request, body []byte) {
+	event := logger.Info()
+	addCtx(ctx, event)
+	event.Str("method", r.Method).
+		Str("url", r.URL.String()).
+		Str("body", string(body)).
+		Str("remoteAddr", r.RemoteAddr).
+		Msg("HTTP Request")
+}
+
+// addCtx adds context values to the log event based on configured context keys.
+func addCtx(ctx context.Context, event *zerolog.Event) {
+	for _, key := range cfg.ContextKeys {
+		val, ok := ctx.Value(key).(string)
+		if !ok {
+			continue
+		}
+		keyStr := string(key)
+		event.Any(keyStr, val)
+	}
+}
+
+// Response logs details of an outgoing HTTP response, including method, URL, status code, and response time.
+func Response(ctx context.Context, r *http.Request, statusCode int, responseTime time.Duration) {
+	event := logger.Info()
+	addCtx(ctx, event)
+	event.Str("method", r.Method).
+		Str("url", r.URL.String()).
+		Int("statusCode", statusCode).
+		Dur("responseTime", responseTime).
+		Msg("HTTP Response")
+}

pkg/log/log_test.go

@@ -0,0 +1,673 @@
+package log
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+	"path/filepath"
+	"reflect"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+type ctxKey any
+
+var requestID ctxKey = "requestID"
+
+const testLogFilePath = "./test_logs/test.log"
+
+func TestMain(m *testing.M) {
+	// Create a single temporary directory for all tests
+	var err error
+	dir := filepath.Dir(testLogFilePath)
+	err = os.MkdirAll(dir, os.ModePerm)
+	if err != nil {
+		panic("failed to create test log directory: " + err.Error())
+	}
+
+	// Run all tests
+	code := m.Run()
+
+	// Cleanup: Remove the log directory after all tests finish
+	err = os.RemoveAll(dir)
+	if err != nil {
+		println("failed to clean up test log directory: ", err.Error())
+	}
+
+	// Exit with the appropriate exit code
+	os.Exit(code)
+}
+
+func setupLogger(t *testing.T, l level) string {
+	t.Helper()
+
+	// Create a temporary directory for logs.
+
+	config := Config{
+		Level: l,
+		Destinations: []destination{
+			{
+				Type: File,
+				Config: map[string]string{
+					"path":      testLogFilePath,
+					"maxSize":   "1",
+					"maxAge":    "1",
+					"maxBackup": "1",
+					"compress":  "false",
+				},
+			},
+		},
+		ContextKeys: []model.ContextKey{
+			model.ContextKeyTxnID,
+			model.ContextKeyMsgID,
+			model.ContextKeySubscriberID,
+			model.ContextKeyModuleID,
+		},
+	}
+
+	// Initialize logger with the given config
+	err := InitLogger(config)
+	if err != nil {
+		t.Fatalf("failed to initialize logger: %v", err)
+	}
+
+	return testLogFilePath
+}
+
+func readLogFile(t *testing.T, logPath string) []string {
+	t.Helper()
+	b, err := os.ReadFile(logPath)
+	if err != nil {
+		t.Fatalf("failed to read log file: %v", err)
+	}
+	return strings.Split(string(b), "\n")
+}
+
+func parseLogLine(t *testing.T, line string) map[string]interface{} {
+	t.Helper()
+	var logEntry map[string]interface{}
+	err := json.Unmarshal([]byte(line), &logEntry)
+	if err != nil {
+		t.Fatalf("Failed to parse log line: %v", err)
+	}
+	return logEntry
+}
+
+func TestDebug(t *testing.T) {
+	t.Helper()
+	logPath := setupLogger(t, DebugLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	Debug(ctx, "Debug message")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "debug",
+		"subscriber_id": "12345",
+		"message":       "Debug message",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+
+	if !found {
+		t.Errorf("Expected Debug message, but it was not found in logs")
+	}
+}
+
+func TestInfo(t *testing.T) {
+	logPath := setupLogger(t, InfoLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	Info(ctx, "Info message")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "info",
+		"subscriber_id": "12345",
+		"message":       "Info message",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+
+	if !found {
+		t.Errorf("expected Info message, but it was not found in logs")
+	}
+}
+
+func TestWarn(t *testing.T) {
+	logPath := setupLogger(t, WarnLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	Warn(ctx, "Warning message")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "warn",
+		"subscriber_id": "12345",
+		"message":       "Warning message",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		delete(logEntry, "time")
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected Warning message, but it was not found in logs")
+	}
+}
+
+func TestError(t *testing.T) {
+	logPath := setupLogger(t, ErrorLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	Error(ctx, fmt.Errorf("test error"), "Error message")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "error",
+		"subscriber_id": "12345",
+		"message":       "Error message",
+		"error":         "test error",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected Error message, but it was not found in logs")
+	}
+}
+
+func TestRequest(t *testing.T) {
+	logPath := setupLogger(t, InfoLevel)
+	ctx := context.WithValue(context.Background(), requestID, "abc-123")
+	req, _ := http.NewRequest("POST", "/api/test", bytes.NewBuffer([]byte(`{"key":"value"}`)))
+	req.RemoteAddr = "127.0.0.1:8080"
+	Request(ctx, req, []byte(`{"key":"value"}`))
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		if logEntry["message"] == "HTTP Request" || logEntry["method"] == "POST" {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected formatted debug message, but it was not found in logs")
+	}
+}
+
+func TestResponse(t *testing.T) {
+	logPath := setupLogger(t, InfoLevel)
+	ctx := context.WithValue(context.Background(), requestID, "abc-123")
+	req, _ := http.NewRequest("GET", "/api/test", nil)
+	Response(ctx, req, 200, time.Millisecond*123)
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		if logEntry["message"] == "HTTP Response" {
+			if logEntry["message"] == "HTTP Response" {
+				value, ok := logEntry["statusCode"]
+				if !ok {
+					t.Fatalf("Expected key 'statusCode' not found in log entry")
+				}
+				statusCode, ok := value.(float64)
+				if !ok {
+					t.Fatalf("Value for 'statusCode' is not a float64, found: %T", value)
+				}
+				if statusCode == 200 {
+					found = true
+					break
+				}
+			}
+		}
+	}
+	if !found {
+		t.Errorf("expected message, but it was not found in logs")
+	}
+}
+
+func TestFatal(t *testing.T) {
+	logPath := setupLogger(t, FatalLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	Fatal(ctx, fmt.Errorf("fatal error"), "Fatal message")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "fatal",
+		"subscriber_id": "12345",
+		"message":       "Fatal message",
+		"error":         "fatal error",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected Fatal message, but it was not found in logs")
+	}
+}
+
+func TestPanic(t *testing.T) {
+	logPath := setupLogger(t, PanicLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	Panic(ctx, fmt.Errorf("panic error"), "Panic message")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "panic",
+		"subscriber_id": "12345",
+		"message":       "Panic message",
+		"error":         "panic error",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected Panic message, but it was not found in logs")
+	}
+}
+
+func TestDebugf(t *testing.T) {
+	logPath := setupLogger(t, DebugLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	Debugf(ctx, "Debugf message: %s", "test")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "debug",
+		"subscriber_id": "12345",
+		"message":       "Debugf message: test",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		t.Log(line)
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected formatted debug message, but it was not found in logs")
+	}
+}
+
+func TestInfof(t *testing.T) {
+	logPath := setupLogger(t, InfoLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	Infof(ctx, "Infof message: %s", "test")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "info",
+		"subscriber_id": "12345",
+		"message":       "Infof message: test",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected Infof message, but it was not found in logs")
+	}
+}
+
+func TestWarnf(t *testing.T) {
+	logPath := setupLogger(t, WarnLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	Warnf(ctx, "Warnf message: %s", "test")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "warn",
+		"subscriber_id": "12345",
+		"message":       "Warnf message: test",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected Warnf message, but it was not found in logs")
+	}
+}
+
+func TestErrorf(t *testing.T) {
+	logPath := setupLogger(t, ErrorLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	err := fmt.Errorf("error message")
+	Errorf(ctx, err, "Errorf message: %s", "test")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "error",
+		"subscriber_id": "12345",
+		"message":       "Errorf message: test",
+		"error":         "error message",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected Errorf message, but it was not found in logs")
+	}
+}
+
+func TestFatalf(t *testing.T) {
+	logPath := setupLogger(t, FatalLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	err := fmt.Errorf("fatal error")
+	Fatalf(ctx, err, "Fatalf message: %s", "test")
+	lines := readLogFile(t, logPath)
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "fatal",
+		"subscriber_id": "12345",
+		"message":       "Fatalf message: test",
+		"error":         "fatal error",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("expected Fatalf message, but it was not found in logs")
+	}
+}
+
+func TestPanicf(t *testing.T) {
+	logPath := setupLogger(t, PanicLevel)
+	ctx := context.WithValue(context.Background(), model.ContextKeySubscriberID, "12345")
+	err := fmt.Errorf("panic error")
+	Panicf(ctx, err, "Panicf message: %s", "test")
+	lines := readLogFile(t, logPath)
+
+	if len(lines) == 0 {
+		t.Fatal("No logs were written.")
+	}
+	expected := map[string]interface{}{
+		"level":         "panic",
+		"subscriber_id": "12345",
+		"message":       "Panicf message: test",
+		"error":         "panic error",
+	}
+
+	var found bool
+	for _, line := range lines {
+		logEntry := parseLogLine(t, line)
+		// Ignore 'time' while comparing
+		delete(logEntry, "time")
+
+		if reflect.DeepEqual(expected, logEntry) {
+			found = true
+			break
+		}
+	}
+
+	if !found {
+		t.Errorf("expected Panicf message, but it was not found in logs")
+	}
+}
+
+func TestValidateConfig(t *testing.T) {
+	tests := []struct {
+		name    string
+		config  Config
+		wantErr error
+	}{
+		{
+			name: "Valid config with Stdout",
+			config: Config{
+				Level: InfoLevel,
+				Destinations: []destination{
+					{Type: Stdout},
+				},
+			},
+			wantErr: nil,
+		},
+		{
+			name: "Valid config with File destination and valid path",
+			config: Config{
+				Level: InfoLevel,
+				Destinations: []destination{
+					{
+						Type: File,
+						Config: map[string]string{
+							"path":       "./logs/app.log",
+							"maxSize":    "10",
+							"maxBackups": "5",
+							"maxAge":     "7",
+						},
+					},
+				},
+			},
+			wantErr: nil,
+		},
+		{
+			name: "Error: Invalid log level",
+			config: Config{
+				Level: "invalid",
+				Destinations: []destination{
+					{Type: Stdout},
+				},
+			},
+			wantErr: ErrInvalidLogLevel,
+		},
+		{
+			name: "Error: No destinations provided",
+			config: Config{
+				Level:        InfoLevel,
+				Destinations: []destination{},
+			},
+			wantErr: ErrLogDestinationNil,
+		},
+		{
+			name: "Error: Invalid destination type",
+			config: Config{
+				Level: InfoLevel,
+				Destinations: []destination{
+					{Type: "unknown"},
+				},
+			},
+			wantErr: fmt.Errorf("invalid destination type 'unknown'"),
+		},
+		{
+			name: "Error: Missing file path for file destination",
+			config: Config{
+				Level: InfoLevel,
+				Destinations: []destination{
+					{
+						Type: File,
+						Config: map[string]string{
+							"maxSize": "10",
+						},
+					},
+				},
+			},
+			wantErr: ErrMissingFilePath,
+		},
+		{
+			name: "Error: Invalid maxSize value in file destination",
+			config: Config{
+				Level: InfoLevel,
+				Destinations: []destination{
+					{
+						Type: File,
+						Config: map[string]string{
+							"path":    "./logs/app.log",
+							"maxSize": "invalid",
+						},
+					},
+				},
+			},
+			wantErr: errors.New(`invalid maxSize: strconv.Atoi: parsing "invalid": invalid syntax`),
+		},
+		{
+			name: "Error: Invalid maxBackups value in file destination",
+			config: Config{
+				Level: InfoLevel,
+				Destinations: []destination{
+					{
+						Type: File,
+						Config: map[string]string{
+							"path":       "./logs/app.log",
+							"maxBackups": "invalid",
+						},
+					},
+				},
+			},
+			wantErr: errors.New(`invalid maxBackups: strconv.Atoi: parsing "invalid": invalid syntax`),
+		},
+		{
+			name: "Error: Invalid maxAge value in file destination",
+			config: Config{
+				Level: InfoLevel,
+				Destinations: []destination{
+					{
+						Type: File,
+						Config: map[string]string{
+							"path":   "./logs/app.log",
+							"maxAge": "invalid",
+						},
+					},
+				},
+			},
+			wantErr: errors.New(`invalid maxAge: strconv.Atoi: parsing "invalid": invalid syntax`),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := tt.config.validate()
+			if (err == nil) != (tt.wantErr == nil) {
+				t.Errorf("validate() error = %v, wantErr %v", err, tt.wantErr)
+			}
+			if err != nil && tt.wantErr != nil && err.Error() != tt.wantErr.Error() {
+				t.Errorf("validate() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}

pkg/model/error.go

@@ -0,0 +1,113 @@
+package model
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+// Error represents a standard error response.
+type Error struct {
+	Code    string `json:"code"`
+	Paths   string `json:"paths,omitempty"`
+	Message string `json:"message"`
+}
+
+// This implements the error interface for the Error struct.
+func (e *Error) Error() string {
+	return fmt.Sprintf("Error: Code=%s, Path=%s, Message=%s", e.Code, e.Paths, e.Message)
+}
+
+// SchemaValidationErr occurs when schema validation errors are encountered.
+type SchemaValidationErr struct {
+	Errors []Error
+}
+
+// This implements the error interface for SchemaValidationErr.
+func (e *SchemaValidationErr) Error() string {
+	var errorMessages []string
+	for _, err := range e.Errors {
+		errorMessages = append(errorMessages, fmt.Sprintf("%s: %s", err.Paths, err.Message))
+	}
+	return strings.Join(errorMessages, "; ")
+}
+
+// BecknError converts the SchemaValidationErr to an instance of Error.
+func (e *SchemaValidationErr) BecknError() *Error {
+	if len(e.Errors) == 0 {
+		return &Error{
+			Code:    http.StatusText(http.StatusBadRequest),
+			Message: "Schema validation error.",
+		}
+	}
+
+	// Collect all error paths and messages
+	var paths []string
+	var messages []string
+	for _, err := range e.Errors {
+		if err.Paths != "" {
+			paths = append(paths, err.Paths)
+		}
+		messages = append(messages, err.Message)
+	}
+
+	return &Error{
+		Code:    http.StatusText(http.StatusBadRequest),
+		Paths:   strings.Join(paths, ";"),
+		Message: strings.Join(messages, "; "),
+	}
+}
+
+// SignValidationErr occurs when signature validation fails.
+type SignValidationErr struct {
+	error
+}
+
+// NewSignValidationErr creates a new instance of SignValidationErr from an error.
+func NewSignValidationErr(e error) *SignValidationErr {
+	return &SignValidationErr{e}
+}
+
+// BecknError converts the SignValidationErr to an instance of Error.
+func (e *SignValidationErr) BecknError() *Error {
+	return &Error{
+		Code:    http.StatusText(http.StatusUnauthorized),
+		Message: "Signature Validation Error: " + e.Error(),
+	}
+}
+
+// BadReqErr occurs when a bad request is encountered.
+type BadReqErr struct {
+	error
+}
+
+// NewBadReqErr creates a new instance of BadReqErr from an error.
+func NewBadReqErr(err error) *BadReqErr {
+	return &BadReqErr{err}
+}
+
+// BecknError converts the BadReqErr to an instance of Error.
+func (e *BadReqErr) BecknError() *Error {
+	return &Error{
+		Code:    http.StatusText(http.StatusBadRequest),
+		Message: "BAD Request: " + e.Error(),
+	}
+}
+
+// NotFoundErr occurs when a requested endpoint is not found.
+type NotFoundErr struct {
+	error
+}
+
+// NewNotFoundErr creates a new instance of NotFoundErr from an error.
+func NewNotFoundErr(err error) *NotFoundErr {
+	return &NotFoundErr{err}
+}
+
+// BecknError converts the NotFoundErr to an instance of Error.
+func (e *NotFoundErr) BecknError() *Error {
+	return &Error{
+		Code:    http.StatusText(http.StatusNotFound),
+		Message: "Endpoint not found: " + e.Error(),
+	}
+}

pkg/model/error_test.go

@@ -0,0 +1,252 @@
+package model
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v2"
+)
+
+// NewSignValidationErrf creates a new SignValidationErr with a formatted error message.
+func NewSignValidationErrf(format string, a ...any) *SignValidationErr {
+	return &SignValidationErr{fmt.Errorf(format, a...)}
+}
+
+// NewNotFoundErrf creates a new NotFoundErr with a formatted error message.
+func NewNotFoundErrf(format string, a ...any) *NotFoundErr {
+	return &NotFoundErr{fmt.Errorf(format, a...)}
+}
+
+// NewBadReqErrf creates a new BadReqErr with a formatted error message.
+func NewBadReqErrf(format string, a ...any) *BadReqErr {
+	return &BadReqErr{fmt.Errorf(format, a...)}
+}
+
+func TestError_Error(t *testing.T) {
+	err := &Error{
+		Code:    "404",
+		Paths:   "/api/v1/user",
+		Message: "User not found",
+	}
+
+	expected := "Error: Code=404, Path=/api/v1/user, Message=User not found"
+	actual := err.Error()
+
+	if actual != expected {
+		t.Errorf("err.Error() = %s, want %s",
+			actual, expected)
+	}
+
+}
+
+func TestSchemaValidationErr_Error(t *testing.T) {
+	schemaErr := &SchemaValidationErr{
+		Errors: []Error{
+			{Paths: "/user", Message: "Field required"},
+			{Paths: "/email", Message: "Invalid format"},
+		},
+	}
+
+	expected := "/user: Field required; /email: Invalid format"
+	actual := schemaErr.Error()
+
+	if actual != expected {
+		t.Errorf("err.Error() = %s, want %s",
+			actual, expected)
+	}
+}
+
+func TestSchemaValidationErr_BecknError(t *testing.T) {
+	schemaErr := &SchemaValidationErr{
+		Errors: []Error{
+			{Paths: "/user", Message: "Field required"},
+		},
+	}
+
+	beErr := schemaErr.BecknError()
+	expected := "Bad Request"
+	if beErr.Code != expected {
+		t.Errorf("err.Error() = %s, want %s",
+			beErr.Code, expected)
+	}
+}
+
+func TestSignValidationErr_BecknError(t *testing.T) {
+	signErr := NewSignValidationErr(errors.New("signature failed"))
+	beErr := signErr.BecknError()
+
+	expectedMsg := "Signature Validation Error: signature failed"
+	if beErr.Message != expectedMsg {
+		t.Errorf("err.Error() = %s, want %s",
+			beErr.Message, expectedMsg)
+	}
+
+}
+
+func TestNewSignValidationErrf(t *testing.T) {
+	signErr := NewSignValidationErrf("error %s", "signature failed")
+	expected := "error signature failed"
+	if signErr.Error() != expected {
+		t.Errorf("err.Error() = %s, want %s",
+			signErr.Error(), expected)
+	}
+}
+
+func TestNewSignValidationErr(t *testing.T) {
+	err := errors.New("signature error")
+	signErr := NewSignValidationErr(err)
+
+	if signErr.Error() != err.Error() {
+		t.Errorf("err.Error() = %s, want %s", err.Error(),
+			signErr.Error())
+	}
+}
+
+func TestBadReqErr_BecknError(t *testing.T) {
+	badReqErr := NewBadReqErr(errors.New("invalid input"))
+	beErr := badReqErr.BecknError()
+
+	expectedMsg := "BAD Request: invalid input"
+	if beErr.Message != expectedMsg {
+		t.Errorf("err.Error() = %s, want %s",
+			beErr.Message, expectedMsg)
+	}
+}
+
+func TestNewBadReqErrf(t *testing.T) {
+	badReqErr := NewBadReqErrf("invalid field %s", "name")
+	expected := "invalid field name"
+	if badReqErr.Error() != expected {
+		t.Errorf("err.Error() = %s, want %s",
+			badReqErr, expected)
+	}
+}
+
+func TestNewBadReqErr(t *testing.T) {
+	err := errors.New("bad request")
+	badReqErr := NewBadReqErr(err)
+
+	if badReqErr.Error() != err.Error() {
+		t.Errorf("err.Error() = %s, want %s",
+			badReqErr.Error(), err.Error())
+	}
+
+}
+
+func TestNotFoundErr_BecknError(t *testing.T) {
+	notFoundErr := NewNotFoundErr(errors.New("resource not found"))
+	beErr := notFoundErr.BecknError()
+
+	expectedMsg := "Endpoint not found: resource not found"
+	if beErr.Message != expectedMsg {
+		t.Errorf("err.Error() = %s, want %s",
+			beErr.Message, expectedMsg)
+	}
+}
+
+func TestNewNotFoundErrf(t *testing.T) {
+	notFoundErr := NewNotFoundErrf("resource %s not found", "user")
+	expected := "resource user not found"
+	if notFoundErr.Error() != expected {
+		t.Errorf("err.Error() = %s, want %s",
+			notFoundErr.Error(), expected)
+	}
+}
+
+func TestNewNotFoundErr(t *testing.T) {
+	err := errors.New("not found")
+	notFoundErr := NewNotFoundErr(err)
+
+	if notFoundErr.Error() != err.Error() {
+		t.Errorf("err.Error() = %s, want %s",
+			notFoundErr.Error(), err.Error())
+	}
+}
+
+func TestRole_UnmarshalYAML_ValidRole(t *testing.T) {
+	var role Role
+	yamlData := []byte("bap")
+
+	err := yaml.Unmarshal(yamlData, &role)
+	assert.NoError(t, err) //TODO: should replace assert here
+	assert.Equal(t, RoleBAP, role)
+}
+
+func TestRole_UnmarshalYAML_InvalidRole(t *testing.T) {
+	var role Role
+	yamlData := []byte("invalid")
+
+	err := yaml.Unmarshal(yamlData, &role)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "invalid Role")
+}
+
+func TestSchemaValidationErr_BecknError_NoErrors(t *testing.T) {
+	schemaValidationErr := &SchemaValidationErr{Errors: nil}
+	beErr := schemaValidationErr.BecknError()
+
+	expectedMsg := "Schema validation error."
+	expectedCode := http.StatusText(http.StatusBadRequest)
+
+	if beErr.Message != expectedMsg {
+		t.Errorf("beErr.Message = %s, want %s", beErr.Message, expectedMsg)
+	}
+	if beErr.Code != expectedCode {
+		t.Errorf("beErr.Code = %s, want %s", beErr.Code, expectedCode)
+	}
+}
+
+func TestParseContextKey_ValidKeys(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected ContextKey
+	}{
+		{"transaction_id", ContextKeyTxnID},
+		{"message_id", ContextKeyMsgID},
+		{"subscriber_id", ContextKeySubscriberID},
+		{"module_id", ContextKeyModuleID},
+	}
+
+	for _, tt := range tests {
+		key, err := ParseContextKey(tt.input)
+		if err != nil {
+			t.Errorf("unexpected error for input %s: %v", tt.input, err)
+		}
+		if key != tt.expected {
+			t.Errorf("expected %s, got %s", tt.expected, key)
+		}
+	}
+}
+
+func TestParseContextKey_InvalidKey(t *testing.T) {
+	_, err := ParseContextKey("invalid_key")
+	if err == nil {
+		t.Error("expected error for invalid context key, got nil")
+	}
+}
+
+func TestContextKey_UnmarshalYAML_Valid(t *testing.T) {
+	yamlData := []byte("message_id")
+	var key ContextKey
+
+	err := yaml.Unmarshal(yamlData, &key)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if key != ContextKeyMsgID {
+		t.Errorf("expected %s, got %s", ContextKeyMsgID, key)
+	}
+}
+
+func TestContextKey_UnmarshalYAML_Invalid(t *testing.T) {
+	yamlData := []byte("invalid_key")
+	var key ContextKey
+
+	err := yaml.Unmarshal(yamlData, &key)
+	if err == nil {
+		t.Error("expected error for invalid context key, got nil")
+	}
+}

pkg/model/model.go

@@ -0,0 +1,186 @@
+package model
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+// Subscriber represents a unique operational configuration of a trusted platform on a network.
+type Subscriber struct {
+	SubscriberID string `json:"subscriber_id"`
+	URL          string `json:"url" format:"uri"`
+	Type         string `json:"type" enum:"BAP,BPP,BG"`
+	Domain       string `json:"domain"`
+}
+
+// Subscription represents subscription details of a network participant.
+type Subscription struct {
+	Subscriber       `json:",inline"`
+	KeyID            string    `json:"key_id" format:"uuid"`
+	SigningPublicKey string    `json:"signing_public_key"`
+	EncrPublicKey    string    `json:"encr_public_key"`
+	ValidFrom        time.Time `json:"valid_from" format:"date-time"`
+	ValidUntil       time.Time `json:"valid_until" format:"date-time"`
+	Status           string    `json:"status" enum:"INITIATED,UNDER_SUBSCRIPTION,SUBSCRIBED,EXPIRED,UNSUBSCRIBED,INVALID_SSL"`
+	Created          time.Time `json:"created" format:"date-time"`
+	Updated          time.Time `json:"updated" format:"date-time"`
+	Nonce            string
+}
+
+// Authorization-related constants for headers.
+const (
+	AuthHeaderSubscriber          string = "Authorization"
+	AuthHeaderGateway             string = "X-Gateway-Authorization"
+	UnaAuthorizedHeaderSubscriber string = "WWW-Authenticate"
+	UnaAuthorizedHeaderGateway    string = "Proxy-Authenticate"
+)
+
+// ContextKey is a custom type used as a key for storing and retrieving values in a context.
+type ContextKey string
+
+const (
+	// ContextKeyTxnID is the context key used to store and retrieve the transaction ID in a request context.
+	ContextKeyTxnID ContextKey = "transaction_id"
+
+	// ContextKeyMsgID is the context key used to store and retrieve the message ID in a request context.
+	ContextKeyMsgID ContextKey = "message_id"
+
+	// ContextKeySubscriberID is the context key used to store and retrieve the subscriber ID in a request context.
+	ContextKeySubscriberID ContextKey = "subscriber_id"
+
+	// ContextKeyModuleID is the context key for storing and retrieving the model ID from a request context.
+	ContextKeyModuleID ContextKey = "module_id"
+)
+
+var contextKeys = map[string]ContextKey{
+	"transaction_id": ContextKeyTxnID,
+	"message_id":     ContextKeyMsgID,
+	"subscriber_id":  ContextKeySubscriberID,
+	"module_id":      ContextKeyModuleID,
+}
+
+// ParseContextKey converts a string into a valid ContextKey.
+func ParseContextKey(v string) (ContextKey, error) {
+	key, ok := contextKeys[v]
+	if !ok {
+		return "", fmt.Errorf("invalid context key: %s", v)
+	}
+	return key, nil
+}
+
+// UnmarshalYAML ensures that only known context keys are accepted during YAML unmarshalling.
+func (k *ContextKey) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var keyStr string
+	if err := unmarshal(&keyStr); err != nil {
+		return err
+	}
+
+	parsedKey, err := ParseContextKey(keyStr)
+	if err != nil {
+		return err
+	}
+
+	*k = parsedKey
+	return nil
+
+}
+
+// Role defines the type of participant in the network.
+type Role string
+
+const (
+	// RoleBAP represents a Buyer App Participant (BAP) in the network.
+	RoleBAP Role = "bap"
+	// RoleBPP represents a Buyer Platform Participant (BPP) in the network.
+	RoleBPP Role = "bpp"
+	// RoleGateway represents a Gateway that facilitates communication in the network.
+	RoleGateway Role = "gateway"
+	// RoleRegistery represents the Registry that maintains network participant details.
+	RoleRegistery Role = "registery"
+)
+
+var validRoles = map[Role]bool{
+	RoleBAP:       true,
+	RoleBPP:       true,
+	RoleGateway:   true,
+	RoleRegistery: true,
+}
+
+// UnmarshalYAML implements custom YAML unmarshalling for Role to ensure only valid values are accepted.
+func (r *Role) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var roleName string
+	if err := unmarshal(&roleName); err != nil {
+		return err
+	}
+
+	role := Role(roleName)
+	if !validRoles[role] {
+		return fmt.Errorf("invalid Role: %s", roleName)
+	}
+	*r = role
+	return nil
+}
+
+// Route represents a network route for message processing.
+type Route struct {
+	TargetType  string   // "url" or "publisher"
+	PublisherID string   // For message queues
+	URL         *url.URL // For API calls
+}
+
+// Keyset represents a collection of cryptographic keys used for signing and encryption.
+type Keyset struct {
+	UniqueKeyID    string // UniqueKeyID is the identifier for the key pair.
+	SigningPrivate string // SigningPrivate is the private key used for signing operations.
+	SigningPublic  string // SigningPublic is the public key corresponding to the signing private key.
+	EncrPrivate    string // EncrPrivate is the private key used for encryption operations.
+	EncrPublic     string // EncrPublic is the public key corresponding to the encryption private key.
+}
+
+// StepContext holds context information for a request processing step.
+type StepContext struct {
+	context.Context
+	Request    *http.Request
+	Body       []byte
+	Route      *Route
+	SubID      string
+	Role       Role
+	RespHeader http.Header
+}
+
+// WithContext updates the existing StepContext with a new context.
+func (ctx *StepContext) WithContext(newCtx context.Context) {
+	ctx.Context = newCtx
+}
+
+// Status represents the acknowledgment status in a response.
+type Status string
+
+const (
+	// StatusACK indicates a successful acknowledgment.
+	StatusACK Status = "ACK"
+	// StatusNACK indicates a negative acknowledgment or failure.
+	StatusNACK Status = "NACK"
+)
+
+// Ack represents an acknowledgment response.
+type Ack struct {
+	// Status holds the acknowledgment status (ACK/NACK).
+	Status Status `json:"status"`
+}
+
+// Message represents the structure of a response message.
+type Message struct {
+	// Ack contains the acknowledgment status.
+	Ack Ack `json:"ack"`
+	// Error holds error details, if any, in the response.
+	Error *Error `json:"error,omitempty"`
+}
+
+// Response represents the main response structure.
+type Response struct {
+	Message Message `json:"message"`
+}

pkg/plugin/config.go

@@ -0,0 +1,21 @@
+package plugin
+
+type PublisherCfg struct {
+	ID     string            `yaml:"id"`
+	Config map[string]string `yaml:"config"`
+}
+
+type ValidatorCfg struct {
+	ID     string            `yaml:"id"`
+	Config map[string]string `yaml:"config"`
+}
+
+type Config struct {
+	ID     string            `yaml:"id"`
+	Config map[string]string `yaml:"config"`
+}
+
+type ManagerConfig struct {
+	Root       string `yaml:"root"`
+	RemoteRoot string `yaml:"remoteRoot"`
+}

pkg/plugin/definition/cache.go

@@ -0,0 +1,27 @@
+package definition
+
+import (
+	"context"
+	"time"
+)
+
+// Cache defines the general cache interface for caching plugins.
+type Cache interface {
+	// Get retrieves a value from the cache based on the given key.
+	Get(ctx context.Context, key string) (string, error)
+
+	// Set stores a value in the cache with the given key and TTL (time-to-live) in seconds.
+	Set(ctx context.Context, key, value string, ttl time.Duration) error
+
+	// Delete removes a value from the cache based on the given key.
+	Delete(ctx context.Context, key string) error
+
+	// Clear removes all values from the cache.
+	Clear(ctx context.Context) error
+}
+
+// CacheProvider interface defines the contract for managing cache instances.
+type CacheProvider interface {
+	// New initializes a new cache instance with the given configuration.
+	New(ctx context.Context, config map[string]string) (Cache, func() error, error)
+}

pkg/plugin/definition/decrypter.go

@@ -0,0 +1,15 @@
+package definition
+
+import "context"
+
+// Decrypter defines the methods for decryption.
+type Decrypter interface {
+	// Decrypt decrypts the given body using the provided privateKeyBase64 and publicKeyBase64.
+	Decrypt(ctx context.Context, encryptedData string, privateKeyBase64, publicKeyBase64 string) (string, error)
+}
+
+// DecrypterProvider initializes a new decrypter instance with the given config.
+type DecrypterProvider interface {
+	// New creates a new decrypter instance based on the provided config.
+	New(ctx context.Context, config map[string]string) (Decrypter, func() error, error)
+}

pkg/plugin/definition/encrypter.go

@@ -0,0 +1,15 @@
+package definition
+
+import "context"
+
+// Encrypter defines the methods for encryption.
+type Encrypter interface {
+	// Encrypt encrypts the given body using the provided privateKeyBase64 and publicKeyBase64.
+	Encrypt(ctx context.Context, data string, privateKeyBase64, publicKeyBase64 string) (string, error)
+}
+
+// EncrypterProvider initializes a new encrypter instance with the given config.
+type EncrypterProvider interface {
+	// New creates a new encrypter instance based on the provided config.
+	New(ctx context.Context, config map[string]string) (Encrypter, func() error, error)
+}

pkg/plugin/definition/keymanager.go

@@ -0,0 +1,23 @@
+package definition
+
+import (
+	"context"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+// KeyManager defines the interface for key management operations/methods.
+type KeyManager interface {
+	GenerateKeyPairs() (*model.Keyset, error)
+	StorePrivateKeys(ctx context.Context, keyID string, keys *model.Keyset) error
+	SigningPrivateKey(ctx context.Context, keyID string) (string, string, error)
+	EncrPrivateKey(ctx context.Context, keyID string) (string, string, error)
+	SigningPublicKey(ctx context.Context, subscriberID, uniqueKeyID string) (string, error)
+	EncrPublicKey(ctx context.Context, subscriberID, uniqueKeyID string) (string, error)
+	DeletePrivateKeys(ctx context.Context, keyID string) error
+}
+
+// KeyManagerProvider initializes a new signer instance.
+type KeyManagerProvider interface {
+	New(context.Context, Cache, RegistryLookup, map[string]string) (KeyManager, func() error, error)
+}

pkg/plugin/definition/middleware.go

@@ -0,0 +1,10 @@
+package definition
+
+import (
+	"context"
+	"net/http"
+)
+
+type MiddlewareProvider interface {
+	New(ctx context.Context, cfg map[string]string) (func(http.Handler) http.Handler, error)
+}

pkg/plugin/definition/publisher.go

@@ -0,0 +1,14 @@
+package definition
+
+import "context"
+
+// Publisher defines the general publisher interface for messaging plugins.
+type Publisher interface {
+	// Publish sends a message (as a byte slice) using the underlying messaging system.
+	Publish(context.Context, string, []byte) error
+}
+
+type PublisherProvider interface {
+	// New initializes a new publisher instance with the given configuration.
+	New(ctx context.Context, config map[string]string) (Publisher, func() error, error)
+}

pkg/plugin/definition/registry.go

@@ -0,0 +1,11 @@
+package definition
+
+import (
+	"context"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+type RegistryLookup interface {
+	Lookup(ctx context.Context, req *model.Subscription) ([]model.Subscription, error)
+}

pkg/plugin/definition/router.go

@@ -0,0 +1,19 @@
+package definition
+
+import (
+	"context"
+	"net/url"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+// RouterProvider initializes the a new Router instance with the given config.
+type RouterProvider interface {
+	New(ctx context.Context, config map[string]string) (Router, func() error, error)
+}
+
+// Router defines the interface for routing requests.
+type Router interface {
+	// Route determines the routing destination based on the request context.
+	Route(ctx context.Context, url *url.URL, body []byte) (*model.Route, error)
+}

pkg/plugin/definition/schemaValidator.go

@@ -0,0 +1,16 @@
+package definition
+
+import (
+	"context"
+	"net/url"
+)
+
+// SchemaValidator interface for schema validation.
+type SchemaValidator interface {
+	Validate(ctx context.Context, url *url.URL, payload []byte) error
+}
+
+// SchemaValidatorProvider interface for creating validators.
+type SchemaValidatorProvider interface {
+	New(ctx context.Context, config map[string]string) (SchemaValidator, func() error, error)
+}

pkg/plugin/definition/signer.go

@@ -0,0 +1,17 @@
+package definition
+
+import "context"
+
+// Signer defines the method for signing.
+type Signer interface {
+	// Sign generates a signature for the given body and privateKeyBase64.
+	// The signature is created with the given timestamps: createdAt (signature creation time)
+	// and expiresAt (signature expiration time).
+	Sign(ctx context.Context, body []byte, privateKeyBase64 string, createdAt, expiresAt int64) (string, error)
+}
+
+// SignerProvider initializes a new signer instance with the given config.
+type SignerProvider interface {
+	// New creates a new signer instance based on the provided config.
+	New(ctx context.Context, config map[string]string) (Signer, func() error, error)
+}

pkg/plugin/definition/signvalidator.go

@@ -0,0 +1,15 @@
+package definition
+
+import "context"
+
+// SignValidator defines the method for verifying signatures.
+type SignValidator interface {
+	// Validate checks the validity of the signature for the given body.
+	Validate(ctx context.Context, body []byte, header string, publicKeyBase64 string) error
+}
+
+// SignValidatorProvider initializes a new Verifier instance with the given config.
+type SignValidatorProvider interface {
+	// New creates a new Verifier instance based on the provided config.
+	New(ctx context.Context, config map[string]string) (SignValidator, func() error, error)
+}

pkg/plugin/definition/step.go

@@ -0,0 +1,15 @@
+package definition
+
+import (
+	"context"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+type Step interface {
+	Run(ctx *model.StepContext) error
+}
+
+type StepProvider interface {
+	New(context.Context, map[string]string) (Step, func(), error)
+}

pkg/plugin/implementation/decrypter/cmd/plugin.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"context"
+
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+	decrypter "github.com/beckn/beckn-onix/pkg/plugin/implementation/decrypter"
+)
+
+// decrypterProvider implements the definition.decrypterProvider interface.
+type decrypterProvider struct{}
+
+// New creates a new Decrypter instance using the provided configuration.
+func (dp decrypterProvider) New(ctx context.Context, config map[string]string) (definition.Decrypter, func() error, error) {
+	return decrypter.New(ctx)
+}
+
+// Provider is the exported symbol that the plugin manager will look for.
+var Provider = decrypterProvider{}

pkg/plugin/implementation/decrypter/cmd/plugin_test.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"context"
+	"testing"
+)
+
+func TestDecrypterProviderSuccess(t *testing.T) {
+	tests := []struct {
+		name   string
+		ctx    context.Context
+		config map[string]string
+	}{
+		{
+			name:   "Valid context with empty config",
+			ctx:    context.Background(),
+			config: map[string]string{},
+		},
+		{
+			name:   "Valid context with non-empty config",
+			ctx:    context.Background(),
+			config: map[string]string{"key": "value"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			provider := decrypterProvider{}
+			decrypter, cleanup, err := provider.New(tt.ctx, tt.config)
+
+			// Check error.
+			if err != nil {
+				t.Errorf("New() error = %v, want no error", err)
+			}
+
+			// Check decrypter.
+			if decrypter == nil {
+				t.Error("New() decrypter is nil, want non-nil")
+			}
+
+			// Test cleanup function if it exists.
+			if cleanup != nil {
+				if err := cleanup(); err != nil {
+					t.Errorf("cleanup() error = %v", err)
+				}
+			}
+		})
+	}
+}

pkg/plugin/implementation/decrypter/decrypter.go

@@ -0,0 +1,87 @@
+package decryption
+
+import (
+	"context"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/ecdh"
+	"encoding/base64"
+	"fmt"
+
+	"github.com/zenazn/pkcs7pad"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+// decrypter implements the Decrypter interface and handles the decryption process.
+type decrypter struct {
+}
+
+// New creates a new decrypter instance with the given configuration.
+func New(ctx context.Context) (*decrypter, func() error, error) {
+	return &decrypter{}, nil, nil
+}
+
+// Decrypt decrypts the given encryptedData using the provided privateKeyBase64 and publicKeyBase64.
+func (d *decrypter) Decrypt(ctx context.Context, encryptedData, privateKeyBase64, publicKeyBase64 string) (string, error) {
+	privateKeyBytes, err := base64.StdEncoding.DecodeString(privateKeyBase64)
+	if err != nil {
+		return "", model.NewBadReqErr(fmt.Errorf("invalid private key: %w", err))
+	}
+
+	publicKeyBytes, err := base64.StdEncoding.DecodeString(publicKeyBase64)
+	if err != nil {
+		return "", model.NewBadReqErr(fmt.Errorf("invalid public key: %w", err))
+	}
+
+	// Decode the Base64 encoded encrypted data.
+	messageByte, err := base64.StdEncoding.DecodeString(encryptedData)
+	if err != nil {
+		return "", model.NewBadReqErr(fmt.Errorf("failed to decode encrypted data: %w", err))
+	}
+
+	aesCipher, err := createAESCipher(privateKeyBytes, publicKeyBytes)
+	if err != nil {
+		return "", fmt.Errorf("failed to create AES cipher: %w", err)
+	}
+
+	blocksize := aesCipher.BlockSize()
+	if len(messageByte)%blocksize != 0 {
+		return "", fmt.Errorf("ciphertext is not a multiple of the blocksize")
+	}
+
+	for i := 0; i < len(messageByte); i += aesCipher.BlockSize() {
+		executionSlice := messageByte[i : i+aesCipher.BlockSize()]
+		aesCipher.Decrypt(executionSlice, executionSlice)
+	}
+
+	messageByte, err = pkcs7pad.Unpad(messageByte)
+	if err != nil {
+		return "", fmt.Errorf("failed to unpad data: %w", err)
+	}
+
+	return string(messageByte), nil
+}
+
+func createAESCipher(privateKey, publicKey []byte) (cipher.Block, error) {
+	x25519Curve := ecdh.X25519()
+	x25519PrivateKey, err := x25519Curve.NewPrivateKey(privateKey)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create private key: %w", err)
+	}
+	x25519PublicKey, err := x25519Curve.NewPublicKey(publicKey)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create public key: %w", err)
+	}
+	sharedSecret, err := x25519PrivateKey.ECDH(x25519PublicKey)
+	if err != nil {
+		return nil, fmt.Errorf("failed to derive shared secret: %w", err)
+	}
+
+	aesCipher, err := aes.NewCipher(sharedSecret)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create AES cipher: %w", err)
+	}
+
+	return aesCipher, nil
+}

pkg/plugin/implementation/decrypter/decrypter_test.go

@@ -0,0 +1,251 @@
+package decryption
+
+import (
+	"context"
+	"crypto/aes"
+	"crypto/ecdh"
+	"crypto/rand"
+	"encoding/base64"
+	"strings"
+	"testing"
+
+	"github.com/zenazn/pkcs7pad"
+)
+
+// Helper function to generate valid test keys.
+func generateTestKeys(t *testing.T) (privateKeyB64, publicKeyB64 string) {
+	curve := ecdh.X25519()
+	privateKey, err := curve.GenerateKey(rand.Reader)
+	if err != nil {
+		t.Fatalf("Failed to generate private key: %v", err)
+	}
+
+	publicKey := privateKey.PublicKey()
+	privateKeyB64 = base64.StdEncoding.EncodeToString(privateKey.Bytes())
+	publicKeyB64 = base64.StdEncoding.EncodeToString(publicKey.Bytes())
+
+	return privateKeyB64, publicKeyB64
+}
+
+// Helper function to encrypt test data.
+func encryptTestData(t *testing.T, data []byte, privateKeyBase64, publicKeyBase64 string) string {
+	privateKeyBytes, err := base64.StdEncoding.DecodeString(privateKeyBase64)
+	if err != nil {
+		t.Fatalf("Invalid private key: %v", err)
+	}
+
+	publicKeyBytes, err := base64.StdEncoding.DecodeString(publicKeyBase64)
+	if err != nil {
+		t.Fatalf("Invalid public key: %v", err)
+	}
+
+	x25519Curve := ecdh.X25519()
+	x25519PrivateKey, err := x25519Curve.NewPrivateKey(privateKeyBytes)
+	if err != nil {
+		t.Fatalf("Failed to create private key: %v", err)
+	}
+	x25519PublicKey, err := x25519Curve.NewPublicKey(publicKeyBytes)
+	if err != nil {
+		t.Fatalf("Failed to create public key: %v", err)
+	}
+
+	// Generate shared secret for encryption.
+	sharedSecret, err := x25519PrivateKey.ECDH(x25519PublicKey)
+	if err != nil {
+		t.Fatalf("Failed to create shared secret: %v", err)
+	}
+
+	// Create AES cipher.
+	block, err := aes.NewCipher(sharedSecret)
+	if err != nil {
+		t.Fatalf("Failed to create AES cipher: %v", err)
+	}
+
+	// Pad the data.
+	paddedData := pkcs7pad.Pad(data, block.BlockSize())
+
+	// Encrypt the data.
+	ciphertext := make([]byte, len(paddedData))
+	for i := 0; i < len(paddedData); i += block.BlockSize() {
+		block.Encrypt(ciphertext[i:i+block.BlockSize()], paddedData[i:i+block.BlockSize()])
+	}
+
+	return base64.StdEncoding.EncodeToString(ciphertext)
+}
+
+// TestDecrypterSuccess tests successful decryption scenarios.
+func TestDecrypterSuccess(t *testing.T) {
+	senderPrivateKeyB64, senderPublicKeyB64 := generateTestKeys(t)
+	receiverPrivateKeyB64, receiverPublicKeyB64 := generateTestKeys(t)
+
+	tests := []struct {
+		name string
+		data []byte
+	}{
+		{
+			name: "Valid decryption with small data",
+			data: []byte("test"),
+		},
+		{
+			name: "Valid decryption with medium data",
+			data: []byte("medium length test data that spans multiple blocks"),
+		},
+		{
+			name: "Valid decryption with empty data",
+			data: []byte{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Encrypt the test data.
+			encryptedData := encryptTestData(t, tt.data, senderPrivateKeyB64, receiverPublicKeyB64)
+
+			decrypter, _, err := New(context.Background())
+			if err != nil {
+				t.Fatalf("Failed to create decrypter: %v", err)
+			}
+
+			result, err := decrypter.Decrypt(context.Background(), encryptedData, receiverPrivateKeyB64, senderPublicKeyB64)
+			if err != nil {
+				t.Errorf("Decrypt() error = %v", err)
+			}
+
+			if err == nil {
+				if result != string(tt.data) {
+					t.Errorf("Decrypt() = %v, want %v", result, string(tt.data))
+				}
+			}
+		})
+	}
+}
+
+// TestDecrypterFailure tests various failure scenarios.
+func TestDecrypterFailure(t *testing.T) {
+	_, senderPublicKeyB64 := generateTestKeys(t)
+	receiverPrivateKeyB64, _ := generateTestKeys(t)
+
+	tests := []struct {
+		name          string
+		encryptedData string
+		privateKey    string
+		publicKey     string
+		expectedErr   string
+	}{
+		{
+			name:          "Invalid private key format",
+			encryptedData: base64.StdEncoding.EncodeToString(make([]byte, 32)),
+			privateKey:    "invalid-base64!@#$",
+			publicKey:     senderPublicKeyB64,
+			expectedErr:   "invalid private key",
+		},
+		{
+			name:          "Invalid public key format",
+			encryptedData: base64.StdEncoding.EncodeToString(make([]byte, 32)),
+			privateKey:    receiverPrivateKeyB64,
+			publicKey:     "invalid-base64!@#$",
+			expectedErr:   "invalid public key",
+		},
+		{
+			name:          "Invalid encrypted data format",
+			encryptedData: "invalid-base64!@#$",
+			privateKey:    receiverPrivateKeyB64,
+			publicKey:     senderPublicKeyB64,
+			expectedErr:   "failed to decode encrypted data",
+		},
+		{
+			name:          "Empty private key",
+			encryptedData: base64.StdEncoding.EncodeToString(make([]byte, 32)),
+			privateKey:    "",
+			publicKey:     senderPublicKeyB64,
+			expectedErr:   "invalid private key",
+		},
+		{
+			name:          "Empty public key",
+			encryptedData: base64.StdEncoding.EncodeToString(make([]byte, 32)),
+			privateKey:    receiverPrivateKeyB64,
+			publicKey:     "",
+			expectedErr:   "invalid public key",
+		},
+		{
+			name:          "Invalid base64 data",
+			encryptedData: "=invalid-base64", // Invalid encrypted data.
+			privateKey:    receiverPrivateKeyB64,
+			publicKey:     senderPublicKeyB64,
+			expectedErr:   "failed to decode encrypted data",
+		},
+		{
+			name:          "Invalid private key size",
+			encryptedData: base64.StdEncoding.EncodeToString(make([]byte, 32)),
+			privateKey:    base64.StdEncoding.EncodeToString([]byte("short")),
+			publicKey:     senderPublicKeyB64,
+			expectedErr:   "failed to create private key",
+		},
+		{
+			name:          "Invalid public key size",
+			encryptedData: base64.StdEncoding.EncodeToString(make([]byte, 32)),
+			privateKey:    receiverPrivateKeyB64,
+			publicKey:     base64.StdEncoding.EncodeToString([]byte("short")),
+			expectedErr:   "failed to create public key",
+		},
+		{
+			name:          "Invalid block size",
+			encryptedData: base64.StdEncoding.EncodeToString([]byte("not-block-size")),
+			privateKey:    receiverPrivateKeyB64,
+			publicKey:     senderPublicKeyB64,
+			expectedErr:   "ciphertext is not a multiple of the blocksize",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			decrypter, _, err := New(context.Background())
+			if err != nil {
+				t.Fatalf("Failed to create decrypter: %v", err)
+			}
+
+			_, err = decrypter.Decrypt(context.Background(), tt.encryptedData, tt.privateKey, tt.publicKey)
+			if err == nil {
+				t.Error("Expected error but got none")
+			}
+
+			if err != nil {
+				if !strings.Contains(err.Error(), tt.expectedErr) {
+					t.Errorf("Expected error containing %q, got %q", tt.expectedErr, err.Error())
+				}
+			}
+		})
+	}
+}
+
+// TestNewDecrypter tests the creation of new Decrypter instances.
+func TestNewDecrypter(t *testing.T) {
+	tests := []struct {
+		name string
+		ctx  context.Context
+	}{
+		{
+			name: "Valid context",
+			ctx:  context.Background(),
+		},
+		{
+			name: "Nil context",
+			ctx:  nil,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			decrypter, _, err := New(tt.ctx)
+			if err != nil {
+				t.Errorf("New() error = %v", err)
+			}
+
+			if err == nil {
+				if decrypter == nil {
+					t.Error("Expected non-nil decrypter")
+				}
+			}
+		})
+	}
+}

pkg/plugin/implementation/encrypter/cmd/plugin.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"context"
+
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+	"github.com/beckn/beckn-onix/pkg/plugin/implementation/encrypter"
+)
+
+// encrypterProvider implements the definition.encrypterProvider interface.
+type encrypterProvider struct{}
+
+func (ep encrypterProvider) New(ctx context.Context, config map[string]string) (definition.Encrypter, func() error, error) {
+	return encrypter.New(ctx)
+}
+
+// Provider is the exported symbol that the plugin manager will look for.
+var Provider = encrypterProvider{}

pkg/plugin/implementation/encrypter/cmd/plugin_test.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"context"
+	"testing"
+)
+
+func TestEncrypterProviderSuccess(t *testing.T) {
+	tests := []struct {
+		name   string
+		ctx    context.Context
+		config map[string]string
+	}{
+		{
+			name:   "Valid empty config",
+			ctx:    context.Background(),
+			config: map[string]string{},
+		},
+		{
+			name: "Valid config with algorithm",
+			ctx:  context.Background(),
+			config: map[string]string{
+				"algorithm": "AES",
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Create provider and encrypter.
+			provider := encrypterProvider{}
+			encrypter, cleanup, err := provider.New(tt.ctx, tt.config)
+			if err != nil {
+				t.Fatalf("EncrypterProvider.New() error = %v", err)
+			}
+			if encrypter == nil {
+				t.Fatal("EncrypterProvider.New() returned nil encrypter")
+			}
+			defer func() {
+				if cleanup != nil {
+					if err := cleanup(); err != nil {
+						t.Errorf("Cleanup() error = %v", err)
+					}
+				}
+			}()
+
+		})
+	}
+}

pkg/plugin/implementation/encrypter/encrypter.go

@@ -0,0 +1,71 @@
+package encrypter
+
+import (
+	"context"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/ecdh"
+	"encoding/base64"
+	"fmt"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+	"github.com/zenazn/pkcs7pad"
+)
+
+// encrypter implements the Encrypter interface and handles the encryption process.
+type encrypter struct {
+}
+
+// New creates a new encrypter instance with the given configuration.
+func New(ctx context.Context) (*encrypter, func() error, error) {
+	return &encrypter{}, nil, nil
+}
+
+func (e *encrypter) Encrypt(ctx context.Context, data string, privateKeyBase64, publicKeyBase64 string) (string, error) {
+	privateKeyBytes, err := base64.StdEncoding.DecodeString(privateKeyBase64)
+	if err != nil {
+		return "", model.NewBadReqErr(fmt.Errorf("invalid private key: %w", err))
+	}
+
+	publicKeyBytes, err := base64.StdEncoding.DecodeString(publicKeyBase64)
+	if err != nil {
+		return "", model.NewBadReqErr(fmt.Errorf("invalid public key: %w", err))
+	}
+
+	// Convert the input string to a byte slice.
+	dataByte := []byte(data)
+	aesCipher, err := createAESCipher(privateKeyBytes, publicKeyBytes)
+	if err != nil {
+		return "", fmt.Errorf("failed to create AES cipher: %w", err)
+	}
+
+	dataByte = pkcs7pad.Pad(dataByte, aesCipher.BlockSize())
+	for i := 0; i < len(dataByte); i += aesCipher.BlockSize() {
+		aesCipher.Encrypt(dataByte[i:i+aesCipher.BlockSize()], dataByte[i:i+aesCipher.BlockSize()])
+	}
+
+	return base64.StdEncoding.EncodeToString(dataByte), nil
+}
+
+func createAESCipher(privateKey, publicKey []byte) (cipher.Block, error) {
+	x25519Curve := ecdh.X25519()
+	x25519PrivateKey, err := x25519Curve.NewPrivateKey(privateKey)
+	if err != nil {
+		return nil, model.NewBadReqErr(fmt.Errorf("failed to create private key: %w", err))
+	}
+	x25519PublicKey, err := x25519Curve.NewPublicKey(publicKey)
+	if err != nil {
+		return nil, model.NewBadReqErr(fmt.Errorf("failed to create public key: %w", err))
+	}
+	sharedSecret, err := x25519PrivateKey.ECDH(x25519PublicKey)
+	if err != nil {
+		return nil, fmt.Errorf("failed to derive shared secret: %w", err)
+	}
+
+	aesCipher, err := aes.NewCipher(sharedSecret)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create AES cipher: %w", err)
+	}
+
+	return aesCipher, nil
+}

pkg/plugin/implementation/encrypter/encrypter_test.go

@@ -0,0 +1,183 @@
+package encrypter
+
+import (
+	"context"
+	"crypto/ecdh"
+	"crypto/rand"
+	"encoding/base64"
+	"strings"
+	"testing"
+)
+
+// Helper function to generate a test X25519 key pair.
+func generateTestKeyPair(t *testing.T) (string, string) {
+	curve := ecdh.X25519()
+	privateKey, err := curve.GenerateKey(rand.Reader)
+	if err != nil {
+		t.Fatalf("Failed to generate private key: %v", err)
+	}
+
+	publicKeyBytes := privateKey.PublicKey().Bytes()
+	// Encode public and private key to base64.
+	publicKeyBase64 := base64.StdEncoding.EncodeToString(publicKeyBytes)
+	privateKeyBase64 := base64.StdEncoding.EncodeToString(privateKey.Bytes())
+
+	return publicKeyBase64, privateKeyBase64
+}
+
+// TestEncryptSuccess tests successful encryption scenarios.
+func TestEncryptSuccess(t *testing.T) {
+	_, privateKey := generateTestKeyPair(t)
+	peerpublicKey, _ := generateTestKeyPair(t)
+
+	tests := []struct {
+		name    string
+		data    string
+		pubKey  string
+		privKey string
+	}{
+		{
+			name:    "Valid short message",
+			data:    "Hello, World!",
+			pubKey:  peerpublicKey,
+			privKey: privateKey,
+		},
+		{
+			name:    "Valid JSON message",
+			data:    `{"key":"value"}`,
+			pubKey:  peerpublicKey,
+			privKey: privateKey,
+		},
+		{
+			name:    "Valid empty message",
+			data:    "",
+			pubKey:  peerpublicKey,
+			privKey: privateKey,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			encrypter := &encrypter{}
+			encrypted, err := encrypter.Encrypt(context.Background(), tt.data, tt.privKey, tt.pubKey)
+			if err != nil {
+				t.Errorf("Encrypt() expected no error, but got: %v", err)
+			}
+
+			// Verify the encrypted data is valid base64.
+			_, err = base64.StdEncoding.DecodeString(encrypted)
+			if err != nil {
+				t.Errorf("Encrypt() output is not valid base64: %v", err)
+			}
+
+			// Since we can't decrypt without the ephemeral private key,
+			// we can only verify that encryption doesn't return empty data.
+			if encrypted == "" {
+				t.Error("Encrypt() returned empty string")
+			}
+
+			// Verify the output is different from input (basic encryption check).
+			if encrypted == tt.data {
+				t.Error("Encrypt() output matches input, suggesting no encryption occurred")
+			}
+
+		})
+	}
+}
+
+// TestEncryptFailure tests encryption failure scenarios.
+func TestEncryptFailure(t *testing.T) {
+	// Generate a valid key pair for testing.
+	_, privateKey := generateTestKeyPair(t)
+	peerpublicKey, _ := generateTestKeyPair(t)
+
+	tests := []struct {
+		name          string
+		data          string
+		publicKey     string
+		privKey       string
+		errorContains string
+	}{
+		{
+			name:          "Invalid public key format",
+			data:          "test data",
+			publicKey:     "invalid-base64!@#$",
+			privKey:       privateKey,
+			errorContains: "invalid public key",
+		},
+		{
+			name:          "Invalid key bytes(public key)",
+			data:          "test data",
+			publicKey:     base64.StdEncoding.EncodeToString([]byte("invalid-key-bytes")),
+			privKey:       privateKey,
+			errorContains: "failed to create public key",
+		},
+		{
+			name:          "Invalid key bytes(private key)",
+			data:          "test data",
+			publicKey:     peerpublicKey,
+			privKey:       base64.StdEncoding.EncodeToString([]byte("invalid-key-bytes")),
+			errorContains: "failed to create private key",
+		},
+		{
+			name:          "Empty public key",
+			data:          "test data",
+			publicKey:     "",
+			privKey:       privateKey,
+			errorContains: "invalid public key",
+		},
+		{
+			name:          "Too short key",
+			data:          "test data",
+			publicKey:     base64.StdEncoding.EncodeToString([]byte{1, 2, 3, 4}),
+			privKey:       privateKey,
+			errorContains: "failed to create public key",
+		},
+		{
+			name:          "Invalid private key",
+			data:          "test data",
+			publicKey:     peerpublicKey,
+			privKey:       "invalid-base64!@#$",
+			errorContains: "invalid private key",
+		},
+		{
+			name:          "Empty private key",
+			data:          "test data",
+			publicKey:     peerpublicKey,
+			privKey:       "",
+			errorContains: "invalid private key",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			encrypter := &encrypter{}
+			_, err := encrypter.Encrypt(context.Background(), tt.data, tt.privKey, tt.publicKey)
+			if err != nil && !strings.Contains(err.Error(), tt.errorContains) {
+				t.Errorf("Encrypt() error = %v, want error containing %q", err, tt.errorContains)
+			}
+		})
+	}
+}
+
+// TestNew tests the creation of new encrypter instances.
+func TestNew(t *testing.T) {
+	tests := []struct {
+		name string
+		ctx  context.Context
+	}{
+		{
+			name: "Success",
+			ctx:  context.Background(),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			encrypter, _, err := New(tt.ctx)
+			if err == nil && encrypter == nil {
+				t.Error("New() returned nil encrypter")
+			}
+		})
+	}
+}

pkg/plugin/implementation/reqpreprocessor/cmd/plugin.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"context"
+	"net/http"
+	"strings"
+
+	"github.com/beckn/beckn-onix/pkg/plugin/implementation/reqpreprocessor"
+)
+
+type provider struct{}
+
+func (p provider) New(ctx context.Context, c map[string]string) (func(http.Handler) http.Handler, error) {
+	config := &reqpreprocessor.Config{}
+	if role, ok := c["role"]; ok {
+		config.Role = role
+	}
+	if contextKeys, ok := c["contextKeys"]; ok {
+		config.ContextKeys = strings.Split(contextKeys, ",")
+	}
+	return reqpreprocessor.NewPreProcessor(config)
+}
+
+var Provider = provider{}

pkg/plugin/implementation/reqpreprocessor/cmd/plugin_test.go

@@ -0,0 +1,122 @@
+package main
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// TODO: Will Split this into success and fail (two test cases)
+func TestProviderNew(t *testing.T) {
+	testCases := []struct {
+		name           string
+		config         map[string]string
+		expectedError  bool
+		expectedStatus int
+		prepareRequest func(req *http.Request)
+	}{
+		{
+			name:           "No Config",
+			config:         map[string]string{},
+			expectedError:  true,
+			expectedStatus: http.StatusOK,
+			prepareRequest: func(req *http.Request) {
+				// Add minimal required headers.
+				req.Header.Set("context", "test-context")
+				req.Header.Set("transaction_id", "test-transaction")
+			},
+		},
+		{
+			name: "Success with BPP role",
+			config: map[string]string{
+				"role": "bpp",
+			},
+			expectedError:  false,
+			expectedStatus: http.StatusOK,
+			prepareRequest: func(req *http.Request) {
+				// Add headers matching the check keys.
+				req.Header.Set("context", "test-context")
+				req.Header.Set("transaction_id", "test-transaction")
+				req.Header.Set("bpp_id", "bpp-456")
+			},
+		},
+		{
+			name:   "Missing role configuration",
+			config: map[string]string{
+				// No role specified
+			},
+			expectedError: true,
+			prepareRequest: func(req *http.Request) {
+				req.Header.Set("context", "test-context")
+				req.Header.Set("transaction_id", "test-transaction")
+			},
+		},
+		{
+			name: "Invalid role configuration",
+			config: map[string]string{
+				"role": "invalid-role",
+			},
+			expectedError: true,
+			prepareRequest: func(req *http.Request) {
+				req.Header.Set("context", "test-context")
+				req.Header.Set("transaction_id", "test-transaction")
+			},
+		},
+		{
+			name: "passing the contextKeys",
+			config: map[string]string{
+				"role":        "bpp",
+				"contextKeys": "transaction_id,message_id",
+			},
+			expectedError:  false,
+			expectedStatus: http.StatusOK,
+			prepareRequest: func(req *http.Request) {
+				req.Header.Set("context", "test-context")
+				req.Header.Set("transaction_id", "test-transaction")
+				req.Header.Set("bpp_id", "bpp1")
+			},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			requestBody := `{
+				"context": {
+					"transaction_id": "abc"
+				}
+			}`
+
+			p := provider{}
+			middleware, err := p.New(context.Background(), tc.config)
+			if tc.expectedError {
+				assert.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+			assert.NotNil(t, middleware)
+
+			testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				w.WriteHeader(http.StatusOK)
+			})
+
+			req := httptest.NewRequest("POST", "/", strings.NewReader(requestBody))
+			req.Header.Set("Content-Type", "application/json")
+			if tc.prepareRequest != nil {
+				tc.prepareRequest(req)
+			}
+
+			w := httptest.NewRecorder()
+			middlewaredHandler := middleware(testHandler)
+			middlewaredHandler.ServeHTTP(w, req)
+			assert.Equal(t, tc.expectedStatus, w.Code, "Unexpected response status")
+			responseBody := w.Body.String()
+			t.Logf("Response Body: %s", responseBody)
+
+		})
+	}
+}

pkg/plugin/implementation/reqpreprocessor/reqpreprocessor.go

@@ -0,0 +1,90 @@
+package reqpreprocessor
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/beckn/beckn-onix/pkg/log"
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+// Config represents the configuration for the request preprocessor middleware.
+type Config struct {
+	Role        string
+	ContextKeys []string
+}
+
+const contextKey = "context"
+
+// NewPreProcessor returns a middleware that processes the incoming request,
+// extracts the context field from the body, and adds relevant values (like subscriber ID).
+func NewPreProcessor(cfg *Config) (func(http.Handler) http.Handler, error) {
+	if err := validateConfig(cfg); err != nil {
+		return nil, err
+	}
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			body, err := io.ReadAll(r.Body)
+			if err != nil {
+				http.Error(w, "Failed to read request body", http.StatusBadRequest)
+				return
+			}
+			var req map[string]interface{}
+			ctx := r.Context()
+			if err := json.Unmarshal(body, &req); err != nil {
+				http.Error(w, "Failed to decode request body", http.StatusBadRequest)
+				return
+			}
+
+			// Extract context from request.
+			reqContext, ok := req["context"].(map[string]interface{})
+			if !ok {
+				http.Error(w, fmt.Sprintf("%s field not found or invalid.", contextKey), http.StatusBadRequest)
+				return
+			}
+			var subID any
+			switch cfg.Role {
+			case "bap":
+				subID = reqContext["bap_id"]
+			case "bpp":
+				subID = reqContext["bpp_id"]
+			}
+			if subID != nil {
+				log.Debugf(ctx, "adding subscriberId to request:%s, %v", model.ContextKeySubscriberID, subID)
+				ctx = context.WithValue(ctx, model.ContextKeySubscriberID, subID)
+			}
+			for _, key := range cfg.ContextKeys {
+				ctxKey, _ := model.ParseContextKey(key)
+				if v, ok := reqContext[key]; ok {
+					ctx = context.WithValue(ctx, ctxKey, v)
+				}
+			}
+			r.Body = io.NopCloser(bytes.NewBuffer(body))
+			r.ContentLength = int64(len(body))
+			r = r.WithContext(ctx)
+			next.ServeHTTP(w, r)
+		})
+	}, nil
+}
+
+func validateConfig(cfg *Config) error {
+	if cfg == nil {
+		return errors.New("config cannot be nil")
+	}
+
+	if cfg.Role != "bap" && cfg.Role != "bpp" {
+		return errors.New("role must be either 'bap' or 'bpp'")
+	}
+
+	for _, key := range cfg.ContextKeys {
+		if _, err := model.ParseContextKey(key); err != nil {
+			return err
+		}
+	}
+	return nil
+}

pkg/plugin/implementation/reqpreprocessor/reqpreprocessor_test.go

@@ -0,0 +1,269 @@
+package reqpreprocessor
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+// ToDo Separate Middleware creation and execution.
+func TestNewPreProcessorSuccessCases(t *testing.T) {
+	tests := []struct {
+		name        string
+		config      *Config
+		requestBody map[string]any
+		expectedID  string
+	}{
+		{
+			name: "BAP role with valid context",
+			config: &Config{
+				Role: "bap",
+			},
+			requestBody: map[string]interface{}{
+				"context": map[string]interface{}{
+					"bap_id":     "bap-123",
+					"message_id": "msg-123",
+				},
+				"message": map[string]interface{}{
+					"key": "value",
+				},
+			},
+			expectedID: "bap-123",
+		},
+		{
+			name: "BPP role with valid context",
+			config: &Config{
+				Role: "bpp",
+			},
+			requestBody: map[string]interface{}{
+				"context": map[string]interface{}{
+					"bpp_id":     "bpp-456",
+					"message_id": "msg-456",
+				},
+				"message": map[string]interface{}{
+					"key": "value",
+				},
+			},
+			expectedID: "bpp-456",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			middleware, err := NewPreProcessor(tt.config)
+			if err != nil {
+				t.Fatalf("NewPreProcessor() error = %v", err)
+			}
+
+			bodyBytes, err := json.Marshal(tt.requestBody)
+			if err != nil {
+				t.Fatalf("Failed to marshal request body: %v", err)
+			}
+			req := httptest.NewRequest(http.MethodPost, "/test", bytes.NewReader(bodyBytes))
+			req.Header.Set("Content-Type", "application/json")
+
+			rec := httptest.NewRecorder()
+
+			var gotSubID interface{}
+
+			dummyHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				ctx := r.Context()
+				gotSubID = ctx.Value(model.ContextKeySubscriberID)
+				w.WriteHeader(http.StatusOK)
+
+				// Verify subscriber ID
+				subID := ctx.Value(model.ContextKeySubscriberID)
+				if subID == nil {
+					t.Errorf("Expected subscriber ID but got none %s", ctx)
+					return
+				}
+
+				// Verify the correct ID was set based on role
+				expectedKey := "bap_id"
+				if tt.config.Role == "bpp" {
+					expectedKey = "bpp_id"
+				}
+				expectedID := tt.requestBody["context"].(map[string]interface{})[expectedKey]
+				if subID != expectedID {
+					t.Errorf("Expected subscriber ID %v, got %v", expectedID, subID)
+				}
+			})
+
+			middleware(dummyHandler).ServeHTTP(rec, req)
+
+			if rec.Code != http.StatusOK {
+				t.Errorf("Expected status code 200, but got %d", rec.Code)
+				return
+			}
+
+			// Verify subscriber ID
+			if gotSubID == nil {
+				t.Error("Expected subscriber_id to be set in context but got nil")
+				return
+			}
+
+			subID, ok := gotSubID.(string)
+			if !ok {
+				t.Errorf("Expected subscriber_id to be string, got %T", gotSubID)
+				return
+			}
+
+			if subID != tt.expectedID {
+				t.Errorf("Expected subscriber_id %q, got %q", tt.expectedID, subID)
+			}
+		})
+	}
+}
+
+func TestNewPreProcessorErrorCases(t *testing.T) {
+	tests := []struct {
+		name         string
+		config       *Config
+		requestBody  interface{}
+		expectedCode int
+		expectErr    bool
+		errMsg       string
+	}{
+		{
+			name: "Missing context",
+			config: &Config{
+				Role: "bap",
+			},
+			requestBody: map[string]any{
+				"otherKey": "value",
+			},
+			expectedCode: http.StatusBadRequest,
+			expectErr:    false,
+			errMsg:       "context field not found or invalid",
+		},
+		{
+			name: "Invalid context type",
+			config: &Config{
+				Role: "bap",
+			},
+			requestBody: map[string]any{
+				"context": "not-a-map",
+			},
+			expectedCode: http.StatusBadRequest,
+			expectErr:    false,
+			errMsg:       "context field not found or invalid",
+		},
+		{
+			name:         "Nil config",
+			config:       nil,
+			requestBody:  map[string]any{},
+			expectedCode: http.StatusInternalServerError,
+			expectErr:    true,
+			errMsg:       "config cannot be nil",
+		},
+		{
+			name: "Invalid role",
+			config: &Config{
+				Role: "invalid-role",
+			},
+			requestBody: map[string]interface{}{
+				"context": map[string]interface{}{
+					"bap_id": "bap-123",
+				},
+			},
+			expectedCode: http.StatusInternalServerError,
+			expectErr:    true,
+			errMsg:       "role must be either 'bap' or 'bpp'",
+		},
+		{
+			name: "Missing subscriber ID",
+			config: &Config{
+				Role: "bap",
+			},
+			requestBody: map[string]interface{}{
+				"context": map[string]interface{}{
+					"message_id": "msg-123",
+				},
+			},
+			expectedCode: http.StatusOK,
+			expectErr:    false,
+		},
+		{
+			name: "Invalid JSON body",
+			config: &Config{
+				Role: "bap",
+			},
+			requestBody:  "{invalid-json}",
+			expectedCode: http.StatusBadRequest,
+			expectErr:    false,
+			errMsg:       "failed to decode request body",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			middleware, err := NewPreProcessor(tt.config)
+			if tt.expectErr {
+				if err == nil {
+					t.Errorf("Expected an error for NewPreProcessor(%s), but got none", tt.config)
+				} else if tt.errMsg != "" && !strings.Contains(err.Error(), tt.errMsg) {
+					t.Errorf("Expected error to contain %q, got %v", tt.errMsg, err)
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("Unexpected error while creating middleware: %v", err)
+			}
+
+			bodyBytes, _ := json.Marshal(tt.requestBody)
+			req := httptest.NewRequest(http.MethodPost, "/test", bytes.NewReader(bodyBytes))
+			req.Header.Set("Content-Type", "application/json")
+
+			rec := httptest.NewRecorder()
+			dummyHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				w.WriteHeader(http.StatusOK)
+			})
+
+			middleware(dummyHandler).ServeHTTP(rec, req)
+
+			if rec.Code != tt.expectedCode {
+				t.Errorf("Expected status code %d, but got %d", tt.expectedCode, rec.Code)
+			}
+		})
+	}
+}
+
+func TestNewPreProcessorAddsSubscriberIDToContext(t *testing.T) {
+	cfg := &Config{Role: "bap"}
+	middleware, err := NewPreProcessor(cfg)
+	if err != nil {
+		t.Fatalf("Expected no error, got %v", err)
+	}
+
+	samplePayload := map[string]interface{}{
+		"context": map[string]interface{}{
+			"bap_id": "bap.example.com",
+		},
+	}
+	bodyBytes, _ := json.Marshal(samplePayload)
+
+	var receivedSubscriberID interface{}
+
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		receivedSubscriberID = r.Context().Value(model.ContextKeySubscriberID)
+		w.WriteHeader(http.StatusOK)
+	})
+
+	req := httptest.NewRequest("POST", "/", strings.NewReader(string(bodyBytes)))
+	req.Header.Set("Content-Type", "application/json")
+	rr := httptest.NewRecorder()
+
+	middleware(handler).ServeHTTP(rr, req)
+
+	if rr.Code != http.StatusOK {
+		t.Fatalf("Expected status 200 OK, got %d", rr.Code)
+	}
+	if receivedSubscriberID != "bap.example.com" {
+		t.Errorf("Expected subscriber ID 'bap.example.com', got %v", receivedSubscriberID)
+	}
+}

pkg/plugin/implementation/router/cmd/plugin.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"context"
+	"errors"
+
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+	"github.com/beckn/beckn-onix/pkg/plugin/implementation/router"
+)
+
+// RouterProvider provides instances of Router.
+type RouterProvider struct{}
+
+// New initializes a new Router instance.
+func (rp RouterProvider) New(ctx context.Context, config map[string]string) (definition.Router, func() error, error) {
+	if ctx == nil {
+		return nil, nil, errors.New("context cannot be nil")
+	}
+
+	// Parse the routingConfig key from the config map
+	routingConfig, ok := config["routingConfig"]
+	if !ok {
+		return nil, nil, errors.New("routingConfig is required in the configuration")
+	}
+	return router.New(ctx, &router.Config{
+		RoutingConfig: routingConfig,
+	})
+}
+
+// Provider is the exported symbol that the plugin manager will look for.
+var Provider = RouterProvider{}

pkg/plugin/implementation/router/cmd/plugin_test.go

@@ -0,0 +1,101 @@
+package main
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"testing"
+)
+
+// setupTestConfig creates a temporary directory and writes a sample routing rules file.
+func setupTestConfig(t *testing.T) string {
+	t.Helper()
+
+	// Get project root (assuming testData is in project root)
+	_, filename, _, _ := runtime.Caller(0)              // Path to plugin_test.go
+	projectRoot := filepath.Dir(filepath.Dir(filename)) // Move up from cmd/
+	yamlPath := filepath.Join(projectRoot, "testData", "bap_receiver.yaml")
+
+	// Copy to temp file (to test file loading logic)
+	tempDir := t.TempDir()
+	tempPath := filepath.Join(tempDir, "routingRules.yaml")
+	content, err := os.ReadFile(yamlPath)
+	if err != nil {
+		t.Fatalf("Failed to read test file: %v", err)
+	}
+	if err := os.WriteFile(tempPath, content, 0644); err != nil {
+		t.Fatalf("Failed to create temp config: %v", err)
+	}
+
+	return tempPath
+}
+
+// TestRouterProviderSuccess tests successful router creation.
+func TestRouterProviderSuccess(t *testing.T) {
+	rulesFilePath := setupTestConfig(t)
+	defer os.RemoveAll(filepath.Dir(rulesFilePath))
+
+	provider := RouterProvider{}
+	router, _, err := provider.New(context.Background(), map[string]string{
+		"routingConfig": rulesFilePath,
+	})
+
+	if err != nil {
+		t.Fatalf("New() unexpected error: %v", err)
+	}
+	if router == nil {
+		t.Error("New() returned nil router, want non-nil")
+	}
+}
+
+// TestRouterProviderFailure tests the RouterProvider implementation for failure cases.
+func TestRouterProviderFailure(t *testing.T) {
+	rulesFilePath := setupTestConfig(t)
+	defer os.RemoveAll(filepath.Dir(rulesFilePath))
+
+	// Define test cases
+	tests := []struct {
+		name    string
+		ctx     context.Context
+		config  map[string]string
+		wantErr string
+	}{
+		{
+			name: "Empty routing config path",
+			ctx:  context.Background(),
+			config: map[string]string{
+				"routingConfig": "",
+			},
+			wantErr: "failed to load routing rules: routingConfig path is empty",
+		},
+		{
+			name:    "Missing routing config key",
+			ctx:     context.Background(),
+			config:  map[string]string{},
+			wantErr: "routingConfig is required in the configuration",
+		},
+		{
+			name:    "Nil context",
+			ctx:     nil,
+			config:  map[string]string{"routingConfig": rulesFilePath},
+			wantErr: "context cannot be nil",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			provider := RouterProvider{}
+			_, _, err := provider.New(tt.ctx, tt.config)
+
+			// Check for expected error
+			if err == nil {
+				t.Fatalf("New(%v, %v) = nil error, want error containing %q", tt.ctx, tt.config, tt.wantErr)
+			}
+			if !strings.Contains(err.Error(), tt.wantErr) {
+				t.Errorf("New(%v, %v) = %v, want error containing %q", tt.ctx, tt.config, err, tt.wantErr)
+			}
+		})
+	}
+}

pkg/plugin/implementation/router/router.go

@@ -0,0 +1,250 @@
+package router
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/url"
+	"os"
+	"path"
+	"strings"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+
+	"gopkg.in/yaml.v3"
+)
+
+// Config holds the configuration for the Router plugin.
+type Config struct {
+	RoutingConfig string `json:"routingConfig"`
+}
+
+// RoutingConfig represents the structure of the routing configuration file.
+type routingConfig struct {
+	RoutingRules []routingRule `yaml:"routingRules"`
+}
+
+// Router implements Router interface.
+type Router struct {
+	rules map[string]map[string]map[string]*model.Route // domain -> version -> endpoint -> route
+}
+
+// RoutingRule represents a single routing rule.
+type routingRule struct {
+	Domain     string   `yaml:"domain"`
+	Version    string   `yaml:"version"`
+	TargetType string   `yaml:"targetType"` // "url", "publisher", "bpp", or "bap"
+	Target     target   `yaml:"target,omitempty"`
+	Endpoints  []string `yaml:"endpoints"`
+}
+
+// Target contains destination-specific details.
+type target struct {
+	URL         string `yaml:"url,omitempty"`         // URL for "url" or gateway endpoint for "bpp"/"bap"
+	PublisherID string `yaml:"publisherId,omitempty"` // For "msgq" type
+}
+
+// TargetType defines possible target destinations.
+const (
+	targetTypeURL       = "url"       // Route to a specific URL
+	targetTypePublisher = "publisher" // Route to a publisher
+	targetTypeBPP       = "bpp"       // Route to a BPP endpoint
+	targetTypeBAP       = "bap"       // Route to a BAP endpoint
+)
+
+// New initializes a new Router instance with the provided configuration.
+// It loads and validates the routing rules from the specified YAML file.
+// Returns an error if the configuration is invalid or the rules cannot be loaded.
+func New(ctx context.Context, config *Config) (*Router, func() error, error) {
+	// Check if config is nil
+	if config == nil {
+		return nil, nil, fmt.Errorf("config cannot be nil")
+	}
+	router := &Router{
+		rules: make(map[string]map[string]map[string]*model.Route),
+	}
+
+	// Load rules at bootup
+	if err := router.loadRules(config.RoutingConfig); err != nil {
+		return nil, nil, fmt.Errorf("failed to load routing rules: %w", err)
+	}
+	return router, nil, nil
+}
+
+// LoadRules reads and parses routing rules from the YAML configuration file.
+func (r *Router) loadRules(configPath string) error {
+	if configPath == "" {
+		return fmt.Errorf("routingConfig path is empty")
+	}
+	data, err := os.ReadFile(configPath)
+	if err != nil {
+		return fmt.Errorf("error reading config file at %s: %w", configPath, err)
+	}
+	var config routingConfig
+	if err := yaml.Unmarshal(data, &config); err != nil {
+		return fmt.Errorf("error parsing YAML: %w", err)
+	}
+
+	// Validate rules
+	if err := validateRules(config.RoutingRules); err != nil {
+		return fmt.Errorf("invalid routing rules: %w", err)
+	}
+	// Build the optimized rule map
+	for _, rule := range config.RoutingRules {
+		// Initialize domain map if not exists
+		if _, ok := r.rules[rule.Domain]; !ok {
+			r.rules[rule.Domain] = make(map[string]map[string]*model.Route)
+		}
+
+		// Initialize version map if not exists
+		if _, ok := r.rules[rule.Domain][rule.Version]; !ok {
+			r.rules[rule.Domain][rule.Version] = make(map[string]*model.Route)
+		}
+
+		// Add all endpoints for this rule
+		for _, endpoint := range rule.Endpoints {
+			var route *model.Route
+			switch rule.TargetType {
+			case targetTypePublisher:
+				route = &model.Route{
+					TargetType:  rule.TargetType,
+					PublisherID: rule.Target.PublisherID,
+				}
+			case targetTypeURL:
+				parsedURL, err := url.Parse(rule.Target.URL)
+				if err != nil {
+					return fmt.Errorf("invalid URL in rule: %w", err)
+				}
+				route = &model.Route{
+					TargetType: rule.TargetType,
+					URL:        parsedURL,
+				}
+			case targetTypeBPP, targetTypeBAP:
+				var parsedURL *url.URL
+				if rule.Target.URL != "" {
+					parsedURL, err = url.Parse(rule.Target.URL)
+					if err != nil {
+						return fmt.Errorf("invalid URL in rule: %w", err)
+					}
+				}
+				route = &model.Route{
+					TargetType: rule.TargetType,
+					URL:        parsedURL,
+				}
+			}
+			r.rules[rule.Domain][rule.Version][endpoint] = route
+		}
+	}
+
+	return nil
+}
+
+// validateRules performs basic validation on the loaded routing rules.
+func validateRules(rules []routingRule) error {
+	for _, rule := range rules {
+		// Ensure domain, version, and TargetType are present
+		if rule.Domain == "" || rule.Version == "" || rule.TargetType == "" {
+			return fmt.Errorf("invalid rule: domain, version, and targetType are required")
+		}
+
+		// Validate based on TargetType
+		switch rule.TargetType {
+		case targetTypeURL:
+			if rule.Target.URL == "" {
+				return fmt.Errorf("invalid rule: url is required for targetType 'url'")
+			}
+			if _, err := url.Parse(rule.Target.URL); err != nil {
+				return fmt.Errorf("invalid URL - %s: %w", rule.Target.URL, err)
+			}
+		case targetTypePublisher:
+			if rule.Target.PublisherID == "" {
+				return fmt.Errorf("invalid rule: publisherID is required for targetType 'publisher'")
+			}
+		case targetTypeBPP, targetTypeBAP:
+			if rule.Target.URL != "" {
+				if _, err := url.Parse(rule.Target.URL); err != nil {
+					return fmt.Errorf("invalid URL - %s defined in routing config for target type %s: %w", rule.Target.URL, rule.TargetType, err)
+				}
+			}
+			continue
+		default:
+			return fmt.Errorf("invalid rule: unknown targetType '%s'", rule.TargetType)
+		}
+	}
+	return nil
+}
+
+// Route determines the routing destination based on the request context.
+func (r *Router) Route(ctx context.Context, url *url.URL, body []byte) (*model.Route, error) {
+	// Parse the body to extract domain and version
+	var requestBody struct {
+		Context struct {
+			Domain  string `json:"domain"`
+			Version string `json:"version"`
+			BPPURI  string `json:"bpp_uri,omitempty"`
+			BAPURI  string `json:"bap_uri,omitempty"`
+		} `json:"context"`
+	}
+	if err := json.Unmarshal(body, &requestBody); err != nil {
+		return nil, fmt.Errorf("error parsing request body: %w", err)
+	}
+
+	// Extract the endpoint from the URL
+	endpoint := path.Base(url.Path)
+
+	// Lookup route in the optimized map
+	domainRules, ok := r.rules[requestBody.Context.Domain]
+	if !ok {
+		return nil, fmt.Errorf("no routing rules found for domain %s", requestBody.Context.Domain)
+	}
+
+	versionRules, ok := domainRules[requestBody.Context.Version]
+	if !ok {
+		return nil, fmt.Errorf("no routing rules found for domain %s version %s", requestBody.Context.Domain, requestBody.Context.Version)
+	}
+
+	route, ok := versionRules[endpoint]
+	if !ok {
+		return nil, fmt.Errorf("endpoint '%s' is not supported for domain %s and version %s in routing config",
+			endpoint, requestBody.Context.Domain, requestBody.Context.Version)
+	}
+	// Handle BPP/BAP routing with request URIs
+	switch route.TargetType {
+	case targetTypeBPP:
+		return handleProtocolMapping(route, requestBody.Context.BPPURI, endpoint)
+	case targetTypeBAP:
+		return handleProtocolMapping(route, requestBody.Context.BAPURI, endpoint)
+	}
+	return route, nil
+}
+
+// handleProtocolMapping handles both BPP and BAP routing with proper URL construction
+func handleProtocolMapping(route *model.Route, npURI, endpoint string) (*model.Route, error) {
+	target := strings.TrimSpace(npURI)
+	if len(target) == 0 {
+		if route.URL == nil {
+			return nil, fmt.Errorf("could not determine destination for endpoint '%s': neither request contained a %s URI nor was a default URL configured in routing rules", endpoint, strings.ToUpper(route.TargetType))
+		}
+		return &model.Route{
+			TargetType: targetTypeURL,
+			URL: &url.URL{
+				Scheme: route.URL.Scheme,
+				Host:   route.URL.Host,
+				Path:   path.Join(route.URL.Path, endpoint),
+			},
+		}, nil
+	}
+	targetURL, err := url.Parse(target)
+	if err != nil {
+		return nil, fmt.Errorf("invalid %s URI - %s in request body for %s: %w", strings.ToUpper(route.TargetType), target, endpoint, err)
+	}
+
+	return &model.Route{
+		TargetType: targetTypeURL,
+		URL: &url.URL{
+			Scheme: targetURL.Scheme,
+			Host:   targetURL.Host,
+			Path:   path.Join(targetURL.Path, endpoint),
+		},
+	}, nil
+}

pkg/plugin/implementation/router/router_test.go

@@ -0,0 +1,486 @@
+package router
+
+import (
+	"context"
+	"embed"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+//go:embed testData/*
+var testData embed.FS
+
+func setupTestConfig(t *testing.T, yamlFileName string) string {
+	t.Helper()
+	configDir := t.TempDir()
+
+	content, err := testData.ReadFile("testData/" + yamlFileName)
+	if err != nil {
+		t.Fatalf("ReadFile() err = %v, want nil", err)
+	}
+
+	rulesPath := filepath.Join(configDir, "routing_rules.yaml")
+	if err := os.WriteFile(rulesPath, content, 0644); err != nil {
+		t.Fatalf("WriteFile() err = %v, want nil", err)
+	}
+
+	return rulesPath
+}
+
+// setupRouter is a helper function to create router instance.
+func setupRouter(t *testing.T, configFile string) (*Router, func() error, string) {
+	rulesFilePath := setupTestConfig(t, configFile)
+	config := &Config{
+		RoutingConfig: rulesFilePath,
+	}
+	router, _, err := New(context.Background(), config)
+	if err != nil {
+		t.Fatalf("New failed: %v", err)
+	}
+	return router, nil, rulesFilePath
+}
+
+// TestNew tests the New function.
+func TestNew(t *testing.T) {
+	ctx := context.Background()
+
+	// List of YAML files in the testData directory
+	yamlFiles := []string{
+		"bap_caller.yaml",
+		"bap_receiver.yaml",
+		"bpp_caller.yaml",
+		"bpp_receiver.yaml",
+	}
+
+	for _, yamlFile := range yamlFiles {
+		t.Run(yamlFile, func(t *testing.T) {
+			rulesFilePath := setupTestConfig(t, yamlFile)
+			defer os.RemoveAll(filepath.Dir(rulesFilePath))
+
+			// Define test cases
+			tests := []struct {
+				name    string
+				config  *Config
+				wantErr string
+			}{
+				{
+					name: "Valid configuration",
+					config: &Config{
+						RoutingConfig: rulesFilePath,
+					},
+					wantErr: "",
+				},
+				{
+					name:    "Empty config",
+					config:  nil,
+					wantErr: "config cannot be nil",
+				},
+				{
+					name: "Empty routing config path",
+					config: &Config{
+						RoutingConfig: "",
+					},
+					wantErr: "routingConfig path is empty",
+				},
+				{
+					name: "Routing config file does not exist",
+					config: &Config{
+						RoutingConfig: "/nonexistent/path/to/rules.yaml",
+					},
+					wantErr: "error reading config file",
+				},
+			}
+
+			for _, tt := range tests {
+				t.Run(tt.name, func(t *testing.T) {
+					router, _, err := New(ctx, tt.config)
+
+					// Check for expected error
+					if tt.wantErr != "" {
+						if err == nil || !strings.Contains(err.Error(), tt.wantErr) {
+							t.Errorf("New(%v) = %v, want error containing %q", tt.config, err, tt.wantErr)
+						}
+						return
+					}
+
+					// Ensure no error occurred
+					if err != nil {
+						t.Errorf("New(%v) = %v, want nil error", tt.config, err)
+						return
+					}
+
+					// Ensure the router and close function are not nil
+					if router == nil {
+						t.Errorf("New(%v, %v) = nil router, want non-nil", ctx, tt.config)
+					}
+				})
+			}
+		})
+	}
+}
+
+// TestValidateRulesSuccess tests the validate function for success cases.
+func TestValidateRulesSuccess(t *testing.T) {
+	tests := []struct {
+		name  string
+		rules []routingRule
+	}{
+		{
+			name: "Valid rules with url routing",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "url",
+					Target: target{
+						URL: "https://example.com/api",
+					},
+					Endpoints: []string{"on_search", "on_select"},
+				},
+			},
+		},
+		{
+			name: "Valid rules with publisher routing",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "publisher",
+					Target: target{
+						PublisherID: "example_topic",
+					},
+					Endpoints: []string{"on_search", "on_select"},
+				},
+			},
+		},
+		{
+			name: "Valid rules with bpp routing to gateway",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "bpp",
+					Target: target{
+						URL: "https://mock_gateway.com/api",
+					},
+					Endpoints: []string{"search"},
+				},
+			},
+		},
+		{
+			name: "Valid rules with bpp routing",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "bpp",
+					Endpoints:  []string{"select"},
+				},
+			},
+		},
+		{
+			name: "Valid rules with bap routing",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "bap",
+					Endpoints:  []string{"select"},
+				},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := validateRules(tt.rules)
+			if err != nil {
+				t.Errorf("validateRules(%v) = %v, want nil error", tt.rules, err)
+			}
+		})
+	}
+}
+
+// TestValidateRulesFailure tests the validate function for failure cases.
+func TestValidateRulesFailure(t *testing.T) {
+	tests := []struct {
+		name    string
+		rules   []routingRule
+		wantErr string
+	}{
+		{
+			name: "Missing domain",
+			rules: []routingRule{
+				{
+					Version:    "1.0.0",
+					TargetType: "url",
+					Target: target{
+						URL: "https://example.com/api",
+					},
+					Endpoints: []string{"search", "select"},
+				},
+			},
+			wantErr: "invalid rule: domain, version, and targetType are required",
+		},
+		{
+			name: "Missing version",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					TargetType: "url",
+					Target: target{
+						URL: "https://example.com/api",
+					},
+					Endpoints: []string{"search", "select"},
+				},
+			},
+			wantErr: "invalid rule: domain, version, and targetType are required",
+		},
+		{
+			name: "Missing targetType",
+			rules: []routingRule{
+				{
+					Domain:  "retail",
+					Version: "1.0.0",
+					Target: target{
+						URL: "https://example.com/api",
+					},
+					Endpoints: []string{"search", "select"},
+				},
+			},
+			wantErr: "invalid rule: domain, version, and targetType are required",
+		},
+		{
+			name: "Invalid targetType",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "invalid",
+					Target: target{
+						URL: "https://example.com/api",
+					},
+					Endpoints: []string{"search", "select"},
+				},
+			},
+			wantErr: "invalid rule: unknown targetType 'invalid'",
+		},
+		{
+			name: "Missing url for targetType: url",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "url",
+					Target:     target{
+						// URL is missing
+					},
+					Endpoints: []string{"search", "select"},
+				},
+			},
+			wantErr: "invalid rule: url is required for targetType 'url'",
+		},
+		{
+			name: "Invalid URL format for targetType: url",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "url",
+					Target: target{
+						URL: "htp:// invalid-url.com", // Invalid scheme
+					},
+					Endpoints: []string{"search"},
+				},
+			},
+			wantErr: `invalid URL - htp:// invalid-url.com: parse "htp:// invalid-url.com": invalid character " " in host name`,
+		},
+		{
+			name: "Missing topic_id for targetType: publisher",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "publisher",
+					Target:     target{
+						// PublisherID is missing
+					},
+					Endpoints: []string{"search", "select"},
+				},
+			},
+			wantErr: "invalid rule: publisherID is required for targetType 'publisher'",
+		},
+		{
+			name: "Invalid URL for BPP targetType",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "bpp",
+					Target: target{
+						URL: "htp:// invalid-url.com", // Invalid URL
+					},
+					Endpoints: []string{"search"},
+				},
+			},
+			wantErr: `invalid URL - htp:// invalid-url.com defined in routing config for target type bpp: parse "htp:// invalid-url.com": invalid character " " in host name`,
+		},
+		{
+			name: "Invalid URL for BAP targetType",
+			rules: []routingRule{
+				{
+					Domain:     "retail",
+					Version:    "1.0.0",
+					TargetType: "bap",
+					Target: target{
+						URL: "http:// [invalid].com", // Invalid host
+					},
+					Endpoints: []string{"search"},
+				},
+			},
+			wantErr: `invalid URL - http:// [invalid].com defined in routing config for target type bap: parse "http:// [invalid].com": invalid character " " in host name`,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := validateRules(tt.rules)
+			if err == nil || !strings.Contains(err.Error(), tt.wantErr) {
+				t.Errorf("validateRules(%v) = %v, want error containing %q", tt.rules, err, tt.wantErr)
+			}
+		})
+	}
+}
+
+// TestRouteSuccess tests the Route function for success cases.
+func TestRouteSuccess(t *testing.T) {
+	ctx := context.Background()
+
+	// Define success test cases
+	tests := []struct {
+		name       string
+		configFile string
+		url        string
+		body       string
+	}{
+		{
+			name:       "Valid domain, version, and endpoint (bpp routing with gateway URL)",
+			configFile: "bap_caller.yaml",
+			url:        "https://example.com/v1/ondc/search",
+			body:       `{"context": {"domain": "ONDC:TRV10", "version": "2.0.0"}}`,
+		},
+		{
+			name:       "Valid domain, version, and endpoint (bpp routing with bpp_uri)",
+			configFile: "bap_caller.yaml",
+			url:        "https://example.com/v1/ondc/select",
+			body:       `{"context": {"domain": "ONDC:TRV10", "version": "2.0.0", "bpp_uri": "https://bpp1.example.com"}}`,
+		},
+		{
+			name:       "Valid domain, version, and endpoint (url routing)",
+			configFile: "bpp_receiver.yaml",
+			url:        "https://example.com/v1/ondc/select",
+			body:       `{"context": {"domain": "ONDC:TRV10", "version": "2.0.0"}}`,
+		},
+		{
+			name:       "Valid domain, version, and endpoint (publisher routing)",
+			configFile: "bpp_receiver.yaml",
+			url:        "https://example.com/v1/ondc/search",
+			body:       `{"context": {"domain": "ONDC:TRV10", "version": "2.0.0"}}`,
+		},
+		{
+			name:       "Valid domain, version, and endpoint (bap routing with bap_uri)",
+			configFile: "bpp_caller.yaml",
+			url:        "https://example.com/v1/ondc/on_select",
+			body:       `{"context": {"domain": "ONDC:TRV10", "version": "2.0.0", "bap_uri": "https://bap1.example.com"}}`,
+		},
+		{
+			name:       "Valid domain, version, and endpoint (bpp routing with bpp_uri)",
+			configFile: "bap_receiver.yaml",
+			url:        "https://example.com/v1/ondc/on_select",
+			body:       `{"context": {"domain": "ONDC:TRV10", "version": "2.0.0", "bpp_uri": "https://bpp1.example.com"}}`,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			router, _, rulesFilePath := setupRouter(t, tt.configFile)
+			defer os.RemoveAll(filepath.Dir(rulesFilePath))
+
+			parsedURL, _ := url.Parse(tt.url)
+			_, err := router.Route(ctx, parsedURL, []byte(tt.body))
+
+			// Ensure no error occurred
+			if err != nil {
+				t.Errorf("router.Route(%v, %v, %v) = %v, want nil error", ctx, parsedURL, []byte(tt.body), err)
+			}
+		})
+	}
+}
+
+// TestRouteFailure tests the Route function for failure cases.
+func TestRouteFailure(t *testing.T) {
+	ctx := context.Background()
+
+	// Define failure test cases
+	tests := []struct {
+		name       string
+		configFile string
+		url        string
+		body       string
+		wantErr    string
+	}{
+		{
+			name:       "Unsupported endpoint",
+			configFile: "bpp_receiver.yaml",
+			url:        "https://example.com/v1/ondc/unsupported",
+			body:       `{"context": {"domain": "ONDC:TRV11", "version": "2.0.0"}}`,
+			wantErr:    "endpoint 'unsupported' is not supported for domain ONDC:TRV11 and version 2.0.0",
+		},
+		{
+			name:       "No matching rule",
+			configFile: "bpp_receiver.yaml",
+			url:        "https://example.com/v1/ondc/select",
+			body:       `{"context": {"domain": "ONDC:SRV11", "version": "2.0.0"}}`,
+			wantErr:    "no routing rules found for domain ONDC:SRV11",
+		},
+		{
+			name:       "Missing bap_uri for bap routing",
+			configFile: "bpp_caller.yaml",
+			url:        "https://example.com/v1/ondc/on_search",
+			body:       `{"context": {"domain": "ONDC:TRV10", "version": "2.0.0"}}`,
+			wantErr:    "could not determine destination for endpoint 'on_search': neither request contained a BAP URI nor was a default URL configured in routing rules",
+		},
+		{
+			name:       "Missing bpp_uri for bpp routing",
+			configFile: "bap_caller.yaml",
+			url:        "https://example.com/v1/ondc/select",
+			body:       `{"context": {"domain": "ONDC:TRV10", "version": "2.0.0"}}`,
+			wantErr:    "could not determine destination for endpoint 'select': neither request contained a BPP URI nor was a default URL configured in routing rules",
+		},
+		{
+			name:       "Invalid bpp_uri format in request",
+			configFile: "bap_caller.yaml",
+			url:        "https://example.com/v1/ondc/select",
+			body:       `{"context": {"domain": "ONDC:TRV10", "version": "2.0.0", "bpp_uri": "htp:// invalid-url"}}`, // Invalid scheme (htp instead of http)
+			wantErr:    `invalid BPP URI - htp:// invalid-url in request body for select: parse "htp:// invalid-url": invalid character " " in host name`,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			router, _, rulesFilePath := setupRouter(t, tt.configFile)
+			defer os.RemoveAll(filepath.Dir(rulesFilePath))
+
+			parsedURL, _ := url.Parse(tt.url)
+			_, err := router.Route(ctx, parsedURL, []byte(tt.body))
+
+			// Check for expected error
+			if err == nil || !strings.Contains(err.Error(), tt.wantErr) {
+				t.Errorf("Route(%q, %q) = %v, want error containing %q", tt.url, tt.body, err, tt.wantErr)
+			}
+		})
+	}
+}

pkg/plugin/implementation/router/testData/bap_caller.yaml

@@ -0,0 +1,25 @@
+routingRules:
+  - domain: ONDC:TRV10
+    version: 2.0.0
+    targetType: bpp
+    target:
+      url: https://gateway.example.com
+    endpoints:
+      - search
+  - domain: ONDC:TRV10
+    version: 2.0.0
+    targetType: bpp
+    endpoints:
+      - select
+      - init
+      - confirm
+      - status
+      - cancel
+  - domain: ONDC:TRV12
+    version: 2.0.0
+    targetType: bpp
+    endpoints:
+      - select
+      - init
+      - confirm
+      - status

pkg/plugin/implementation/router/testData/bap_receiver.yaml

@@ -0,0 +1,20 @@
+routingRules:
+  - domain: ONDC:TRV10
+    version: 2.0.0
+    targetType: url
+    target:
+      url: https://services-backend/trv/v1
+    endpoints:
+      - on_select
+      - on_init
+      - on_confirm
+      - on_status
+      - on_update
+      - on_cancel
+  - domain: ONDC:TRV10
+    version: 2.0.0
+    targetType: publisher
+    target:
+      publisherId: trv_topic_id1
+    endpoints:
+      - on_search

pkg/plugin/implementation/router/testData/bpp_caller.yaml

@@ -0,0 +1,23 @@
+routingRules:
+  - domain: ONDC:TRV10
+    version: 2.0.0
+    targetType: bap
+    endpoints:
+      - on_search
+      - on_select
+      - on_init
+      - on_confirm
+      - on_status
+      - on_update
+      - on_cancel
+  - domain: ONDC:TRV11
+    version: 2.0.0
+    targetType: bap
+    endpoints:
+      - on_search
+      - on_select
+      - on_init
+      - on_confirm
+      - on_status
+      - on_update
+      - on_cancel

pkg/plugin/implementation/router/testData/bpp_receiver.yaml

@@ -0,0 +1,28 @@
+routingRules:
+  - domain: ONDC:TRV10
+    version: 2.0.0
+    targetType: url
+    target:
+      url: https://services-backend/trv/v1
+    endpoints:
+      - select
+      - init
+      - confirm
+      - status
+      - cancel
+  - domain: ONDC:TRV10
+    version: 2.0.0
+    targetType: publisher
+    target:
+      publisherId: trv_topic_id1
+    endpoints:
+      - search
+  - domain: ONDC:TRV11
+    version: 2.0.0
+    targetType: url
+    target:
+      url: https://services-backend/trv/v1
+    endpoints:
+      - select
+      - init
+      - confirm

pkg/plugin/implementation/schemavalidator/cmd/plugin.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"context"
+	"errors"
+
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+	"github.com/beckn/beckn-onix/pkg/plugin/implementation/schemavalidator"
+)
+
+// schemaValidatorProvider provides instances of schemaValidator.
+type schemaValidatorProvider struct{}
+
+// New initializes a new Verifier instance.
+func (vp schemaValidatorProvider) New(ctx context.Context, config map[string]string) (definition.SchemaValidator, func() error, error) {
+	if ctx == nil {
+		return nil, nil, errors.New("context cannot be nil")
+	}
+
+	// Extract schemaDir from the config map
+	schemaDir, ok := config["schemaDir"]
+	if !ok || schemaDir == "" {
+		return nil, nil, errors.New("config must contain 'schemaDir'")
+	}
+
+	// Create a new schemaValidator instance with the provided configuration
+	return schemavalidator.New(ctx, &schemavalidator.Config{
+		SchemaDir: schemaDir,
+	})
+}
+
+// Provider is the exported symbol that the plugin manager will look for.
+var Provider = schemaValidatorProvider{}

pkg/plugin/implementation/schemavalidator/cmd/plugin_test.go

@@ -0,0 +1,150 @@
+package main
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// setupTestSchema creates a temporary directory and writes a sample schema file.
+func setupTestSchema(t *testing.T) string {
+	t.Helper()
+
+	// Create a temporary directory for the schema
+	schemaDir, err := os.MkdirTemp("", "schemas")
+	if err != nil {
+		t.Fatalf("Failed to create temp directory: %v", err)
+	}
+
+	// Create the directory structure for the schema file
+	schemaFilePath := filepath.Join(schemaDir, "example", "1.0", "test_schema.json")
+	if err := os.MkdirAll(filepath.Dir(schemaFilePath), 0755); err != nil {
+		t.Fatalf("Failed to create schema directory structure: %v", err)
+	}
+
+	// Define a sample schema
+	schemaContent := `{
+		"type": "object",
+		"properties": {
+			"context": {
+				"type": "object",
+				"properties": {
+					"domain": {"type": "string"},
+					"version": {"type": "string"}
+				},
+				"required": ["domain", "version"]
+			}
+		},
+		"required": ["context"]
+	}`
+
+	// Write the schema to the file
+	if err := os.WriteFile(schemaFilePath, []byte(schemaContent), 0644); err != nil {
+		t.Fatalf("Failed to write schema file: %v", err)
+	}
+
+	return schemaDir
+}
+
+// TestValidatorProviderSuccess tests successful ValidatorProvider implementation.
+func TestValidatorProviderSuccess(t *testing.T) {
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	// Define test cases.
+	tests := []struct {
+		name          string
+		ctx           context.Context
+		config        map[string]string
+		expectedError string
+	}{
+		{
+			name:          "Valid schema directory",
+			ctx:           context.Background(), // Valid context
+			config:        map[string]string{"schemaDir": schemaDir},
+			expectedError: "",
+		},
+	}
+
+	// Test using table-driven tests
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			vp := schemaValidatorProvider{}
+			schemaValidator, _, err := vp.New(tt.ctx, tt.config)
+
+			// Ensure no error occurred
+			if err != nil {
+				t.Errorf("unexpected error: %v", err)
+				return
+			}
+
+			// Ensure the schemaValidator is not nil
+			if schemaValidator == nil {
+				t.Error("expected a non-nil schemaValidator, got nil")
+			}
+		})
+	}
+}
+
+// TestValidatorProviderSuccess tests cases where ValidatorProvider creation should fail.
+func TestValidatorProviderFailure(t *testing.T) {
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	// Define test cases.
+	tests := []struct {
+		name          string
+		ctx           context.Context
+		config        map[string]string
+		expectedError string
+	}{
+		{
+			name:          "Config is empty",
+			ctx:           context.Background(),
+			config:        map[string]string{},
+			expectedError: "config must contain 'schemaDir'",
+		},
+		{
+			name:          "schemaDir is empty",
+			ctx:           context.Background(),
+			config:        map[string]string{"schemaDir": ""},
+			expectedError: "config must contain 'schemaDir'",
+		},
+		{
+			name:          "Invalid schema directory",
+			ctx:           context.Background(), // Valid context
+			config:        map[string]string{"schemaDir": "/invalid/dir"},
+			expectedError: "failed to initialise schemaValidator: schema directory does not exist: /invalid/dir",
+		},
+		{
+			name:          "Nil context",
+			ctx:           nil, // Nil context
+			config:        map[string]string{"schemaDir": schemaDir},
+			expectedError: "context cannot be nil",
+		},
+	}
+
+	// Test using table-driven tests
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			vp := schemaValidatorProvider{}
+			_, _, err := vp.New(tt.ctx, tt.config)
+
+			// Check for expected error
+			if tt.expectedError != "" {
+				if err == nil || !strings.Contains(err.Error(), tt.expectedError) {
+					t.Errorf("expected error %q, got %v", tt.expectedError, err)
+				}
+				return
+			}
+
+			// Ensure no error occurred
+			if err != nil {
+				t.Errorf("unexpected error: %v", err)
+				return
+			}
+		})
+	}
+}

pkg/plugin/implementation/schemavalidator/schemavalidator.go

@@ -0,0 +1,193 @@
+package schemavalidator
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/url"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+
+	"github.com/beckn/beckn-onix/pkg/log"
+	"github.com/beckn/beckn-onix/pkg/model"
+
+	"github.com/santhosh-tekuri/jsonschema/v6"
+)
+
+// Payload represents the structure of the data payload with context information.
+type payload struct {
+	Context struct {
+		Domain  string `json:"domain"`
+		Version string `json:"version"`
+	} `json:"context"`
+}
+
+// schemaValidator implements the Validator interface.
+type schemaValidator struct {
+	config      *Config
+	schemaCache map[string]*jsonschema.Schema
+}
+
+// Config struct for SchemaValidator.
+type Config struct {
+	SchemaDir string
+}
+
+// New creates a new ValidatorProvider instance.
+func New(ctx context.Context, config *Config) (*schemaValidator, func() error, error) {
+	// Check if config is nil
+	if config == nil {
+		return nil, nil, fmt.Errorf("config cannot be nil")
+	}
+	v := &schemaValidator{
+		config:      config,
+		schemaCache: make(map[string]*jsonschema.Schema),
+	}
+
+	// Call Initialise function to load schemas and get validators
+	if err := v.initialise(); err != nil {
+		return nil, nil, fmt.Errorf("failed to initialise schemaValidator: %v", err)
+	}
+	return v, nil, nil
+}
+
+// Validate validates the given data against the schema.
+func (v *schemaValidator) Validate(ctx context.Context, url *url.URL, data []byte) error {
+	var payloadData payload
+	err := json.Unmarshal(data, &payloadData)
+	if err != nil {
+		return model.NewBadReqErr(fmt.Errorf("failed to parse JSON payload: %v", err))
+	}
+
+	// Extract domain, version, and endpoint from the payload and uri.
+	cxtDomain := payloadData.Context.Domain
+	version := payloadData.Context.Version
+	version = fmt.Sprintf("v%s", version)
+
+	endpoint := path.Base(url.String())
+	log.Debugf(ctx, "Handling request for endpoint: %s", endpoint)
+	domain := strings.ToLower(cxtDomain)
+	domain = strings.ReplaceAll(domain, ":", "_")
+
+	// Construct the schema file name.
+	schemaFileName := fmt.Sprintf("%s_%s_%s", domain, version, endpoint)
+
+	// Retrieve the schema from the cache.
+	schema, exists := v.schemaCache[schemaFileName]
+	if !exists {
+		return model.NewBadReqErr(fmt.Errorf("schema not found for domain: %s", domain))
+	}
+
+	var jsonData any
+	if err := json.Unmarshal(data, &jsonData); err != nil {
+		return model.NewBadReqErr(fmt.Errorf("failed to parse JSON data: %v", err))
+	}
+	err = schema.Validate(jsonData)
+	if err != nil {
+		// Handle schema validation errors
+		if validationErr, ok := err.(*jsonschema.ValidationError); ok {
+			// Convert validation errors into an array of SchemaValError
+			var schemaErrors []model.Error
+			for _, cause := range validationErr.Causes {
+				// Extract the path and message from the validation error
+				path := strings.Join(cause.InstanceLocation, ".") // JSON path to the invalid field
+				message := cause.Error()                          // Validation error message
+
+				// Append the error to the schemaErrors array
+				schemaErrors = append(schemaErrors, model.Error{
+					Paths:   path,
+					Message: message,
+				})
+			}
+			// Return the array of schema validation errors
+			return &model.SchemaValidationErr{Errors: schemaErrors}
+		}
+		return fmt.Errorf("validation failed: %v", err)
+	}
+
+	// Return nil if validation succeeds
+	return nil
+}
+
+// Initialise initialises the validator provider by compiling all the JSON schema files
+// from the specified directory and storing them in a cache indexed by their schema filenames.
+func (v *schemaValidator) initialise() error {
+	schemaDir := v.config.SchemaDir
+	// Check if the directory exists and is accessible.
+	info, err := os.Stat(schemaDir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return fmt.Errorf("schema directory does not exist: %s", schemaDir)
+		}
+		return fmt.Errorf("failed to access schema directory: %v", err)
+	}
+	if !info.IsDir() {
+		return fmt.Errorf("provided schema path is not a directory: %s", schemaDir)
+	}
+
+	compiler := jsonschema.NewCompiler()
+
+	// Helper function to process directories recursively.
+	var processDir func(dir string) error
+	processDir = func(dir string) error {
+		entries, err := os.ReadDir(dir)
+		if err != nil {
+			return fmt.Errorf("failed to read directory: %v", err)
+		}
+
+		for _, entry := range entries {
+			path := filepath.Join(dir, entry.Name())
+			if entry.IsDir() {
+				// Recursively process subdirectories.
+				if err := processDir(path); err != nil {
+					return err
+				}
+			} else if filepath.Ext(entry.Name()) == ".json" {
+				// Process JSON files.
+				compiledSchema, err := compiler.Compile(path)
+				if err != nil {
+					return fmt.Errorf("failed to compile JSON schema from file %s: %v", entry.Name(), err)
+				}
+
+				// Use relative path from schemaDir to avoid absolute paths and make schema keys domain/version specific.
+				relativePath, err := filepath.Rel(schemaDir, path)
+				if err != nil {
+					return fmt.Errorf("failed to get relative path for file %s: %v", entry.Name(), err)
+				}
+				// Split the relative path to get domain, version, and schema.
+				parts := strings.Split(relativePath, string(os.PathSeparator))
+
+				// Ensure that the file path has at least 3 parts: domain, version, and schema file.
+				if len(parts) < 3 {
+					return fmt.Errorf("invalid schema file structure, expected domain/version/schema.json but got: %s", relativePath)
+				}
+
+				// Extract domain, version, and schema filename from the parts.
+				// Validate that the extracted parts are non-empty.
+				domain := strings.TrimSpace(parts[0])
+				version := strings.TrimSpace(parts[1])
+				schemaFileName := strings.TrimSpace(parts[2])
+				schemaFileName = strings.TrimSuffix(schemaFileName, ".json")
+
+				if domain == "" || version == "" || schemaFileName == "" {
+					return fmt.Errorf("invalid schema file structure, one or more components are empty. Relative path: %s", relativePath)
+				}
+
+				// Construct a unique key combining domain, version, and schema name (e.g., ondc_trv10_v2.0.0_schema).
+				uniqueKey := fmt.Sprintf("%s_%s_%s", domain, version, schemaFileName)
+				// Store the compiled schema in the SchemaCache using the unique key.
+				v.schemaCache[uniqueKey] = compiledSchema
+			}
+		}
+		return nil
+	}
+
+	// Start processing from the root schema directory.
+	if err := processDir(schemaDir); err != nil {
+		return fmt.Errorf("failed to read schema directory: %v", err)
+	}
+
+	return nil
+}

pkg/plugin/implementation/schemavalidator/schemavalidator_test.go

@@ -0,0 +1,353 @@
+package schemavalidator
+
+import (
+	"context"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/santhosh-tekuri/jsonschema/v6"
+)
+
+// setupTestSchema creates a temporary directory and writes a sample schema file.
+func setupTestSchema(t *testing.T) string {
+	t.Helper()
+
+	// Create a temporary directory for the schema
+	schemaDir, err := os.MkdirTemp("", "schemas")
+	if err != nil {
+		t.Fatalf("Failed to create temp directory: %v", err)
+	}
+
+	// Create the directory structure for the schema file
+	schemaFilePath := filepath.Join(schemaDir, "example", "v1.0", "endpoint.json")
+	if err := os.MkdirAll(filepath.Dir(schemaFilePath), 0755); err != nil {
+		t.Fatalf("Failed to create schema directory structure: %v", err)
+	}
+
+	// Define a sample schema
+	schemaContent := `{
+		"type": "object",
+		"properties": {
+			"context": {
+				"type": "object",
+				"properties": {
+					"domain": {"type": "string"},
+					"version": {"type": "string"},
+					"action": {"type": "string"}
+				},
+				"required": ["domain", "version", "action"]
+			}
+		},
+		"required": ["context"]
+	}`
+
+	// Write the schema to the file
+	if err := os.WriteFile(schemaFilePath, []byte(schemaContent), 0644); err != nil {
+		t.Fatalf("Failed to write schema file: %v", err)
+	}
+
+	return schemaDir
+}
+
+func TestValidator_Validate_Success(t *testing.T) {
+	tests := []struct {
+		name    string
+		url     string
+		payload string
+		wantErr bool
+	}{
+		{
+			name:    "Valid payload",
+			url:     "http://example.com/endpoint",
+			payload: `{"context": {"domain": "example", "version": "1.0", "action": "endpoint"}}`,
+			wantErr: false,
+		},
+	}
+
+	// Setup a temporary schema directory for testing
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	config := &Config{SchemaDir: schemaDir}
+	v, _, err := New(context.Background(), config)
+	if err != nil {
+		t.Fatalf("Failed to create validator: %v", err)
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			u, _ := url.Parse(tt.url)
+			err := v.Validate(context.Background(), u, []byte(tt.payload))
+			if err != nil {
+				t.Errorf("Unexpected error: %v", err)
+			} else {
+				t.Logf("Test %s passed with no errors", tt.name)
+			}
+		})
+	}
+}
+
+func TestValidator_Validate_Failure(t *testing.T) {
+	tests := []struct {
+		name    string
+		url     string
+		payload string
+		wantErr string
+	}{
+		{
+			name:    "Invalid JSON payload",
+			url:     "http://example.com/endpoint",
+			payload: `{"context": {"domain": "example", "version": "1.0"`,
+			wantErr: "failed to parse JSON payload",
+		},
+		{
+			name:    "Schema validation failure",
+			url:     "http://example.com/endpoint",
+			payload: `{"context": {"domain": "example", "version": "1.0"}}`,
+			wantErr: "context: at '/context': missing property 'action'",
+		},
+		{
+			name:    "Schema not found",
+			url:     "http://example.com/unknown_endpoint",
+			payload: `{"context": {"domain": "example", "version": "1.0"}}`,
+			wantErr: "schema not found for domain",
+		},
+	}
+
+	// Setup a temporary schema directory for testing
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	config := &Config{SchemaDir: schemaDir}
+	v, _, err := New(context.Background(), config)
+	if err != nil {
+		t.Fatalf("Failed to create validator: %v", err)
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			u, _ := url.Parse(tt.url)
+			err := v.Validate(context.Background(), u, []byte(tt.payload))
+			if tt.wantErr != "" {
+				if err == nil {
+					t.Errorf("Expected error containing '%s', but got nil", tt.wantErr)
+				} else if !strings.Contains(err.Error(), tt.wantErr) {
+					t.Errorf("Expected error containing '%s', but got '%v'", tt.wantErr, err)
+				} else {
+					t.Logf("Test %s passed with expected error: %v", tt.name, err)
+				}
+			} else {
+				if err != nil {
+					t.Errorf("Unexpected error: %v", err)
+				} else {
+					t.Logf("Test %s passed with no errors", tt.name)
+				}
+			}
+		})
+	}
+}
+
+func TestValidator_Initialise(t *testing.T) {
+	tests := []struct {
+		name      string
+		setupFunc func(schemaDir string) error
+		wantErr   string
+	}{
+		{
+			name: "Schema directory does not exist",
+			setupFunc: func(schemaDir string) error {
+				// Do not create the schema directory
+				return nil
+
+			},
+			wantErr: "schema directory does not exist",
+		},
+		{
+			name: "Schema path is not a directory",
+			setupFunc: func(schemaDir string) error {
+				// Create a file instead of a directory
+				return os.WriteFile(schemaDir, []byte{}, 0644)
+			},
+			wantErr: "provided schema path is not a directory",
+		},
+		{
+			name: "Invalid schema file structure",
+			setupFunc: func(schemaDir string) error {
+				// Create an invalid schema file structure
+				invalidSchemaFile := filepath.Join(schemaDir, "invalid_schema.json")
+				if err := os.MkdirAll(filepath.Dir(invalidSchemaFile), 0755); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return os.WriteFile(invalidSchemaFile, []byte(`{}`), 0644)
+			},
+			wantErr: "invalid schema file structure",
+		},
+		{
+			name: "Failed to compile JSON schema",
+			setupFunc: func(schemaDir string) error {
+				// Create a schema file with invalid JSON
+				invalidSchemaFile := filepath.Join(schemaDir, "example", "1.0", "endpoint.json")
+				if err := os.MkdirAll(filepath.Dir(invalidSchemaFile), 0755); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return os.WriteFile(invalidSchemaFile, []byte(`{invalid json}`), 0644)
+			},
+			wantErr: "failed to compile JSON schema",
+		},
+		{
+			name: "Invalid schema file structure with empty components",
+			setupFunc: func(schemaDir string) error {
+				// Create a schema file with empty domain, version, or schema name
+				invalidSchemaFile := filepath.Join(schemaDir, "", "1.0", "endpoint.json")
+				if err := os.MkdirAll(filepath.Dir(invalidSchemaFile), 0755); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return os.WriteFile(invalidSchemaFile, []byte(`{
+					"type": "object",
+					"properties": {
+						"context": {
+							"type": "object",
+							"properties": {
+								"domain": {"type": "string"},
+								"version": {"type": "string"}
+							},
+							"required": ["domain", "version"]
+						}
+					},
+					"required": ["context"]
+				}`), 0644)
+			},
+			wantErr: "failed to read schema directory: invalid schema file structure, expected domain/version/schema.json but got: 1.0/endpoint.json",
+		},
+		{
+			name: "Failed to read directory",
+			setupFunc: func(schemaDir string) error {
+				// Create a directory and remove read permissions
+				if err := os.MkdirAll(schemaDir, 0000); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return nil
+			},
+			wantErr: "failed to read directory",
+		},
+		{
+			name: "Valid schema directory",
+			setupFunc: func(schemaDir string) error {
+				// Create a valid schema file
+				validSchemaFile := filepath.Join(schemaDir, "example", "1.0", "endpoint.json")
+				if err := os.MkdirAll(filepath.Dir(validSchemaFile), 0755); err != nil {
+					t.Fatalf("Failed to create directory: %v", err)
+				}
+				return os.WriteFile(validSchemaFile, []byte(`{
+					"type": "object",
+					"properties": {
+						"context": {
+							"type": "object",
+							"properties": {
+								"domain": {"type": "string"},
+								"version": {"type": "string"}
+							},
+							"required": ["domain", "version"]
+						}
+					},
+					"required": ["context"]
+				}`), 0644)
+			},
+			wantErr: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Setup a temporary schema directory for testing
+			schemaDir := filepath.Join(os.TempDir(), "schemas")
+			defer os.RemoveAll(schemaDir)
+
+			// Run the setup function to prepare the test case
+			if err := tt.setupFunc(schemaDir); err != nil {
+				t.Fatalf("setupFunc() error = %v", err)
+			}
+
+			config := &Config{SchemaDir: schemaDir}
+			v := &schemaValidator{
+				config:      config,
+				schemaCache: make(map[string]*jsonschema.Schema),
+			}
+
+			err := v.initialise()
+			if (err != nil && !strings.Contains(err.Error(), tt.wantErr)) || (err == nil && tt.wantErr != "") {
+				t.Errorf("Error: initialise() returned error = %v, expected error = %v", err, tt.wantErr)
+			} else if err == nil {
+				t.Logf("Test %s passed: validator initialized successfully", tt.name)
+			} else {
+				t.Logf("Test %s passed with expected error: %v", tt.name, err)
+			}
+		})
+	}
+}
+
+func TestValidatorNew_Success(t *testing.T) {
+	schemaDir := setupTestSchema(t)
+	defer os.RemoveAll(schemaDir)
+
+	config := &Config{SchemaDir: schemaDir}
+	_, _, err := New(context.Background(), config)
+	if err != nil {
+		t.Errorf("Unexpected error: %v", err)
+	}
+}
+
+func TestValidatorNewFailure(t *testing.T) {
+	tests := []struct {
+		name      string
+		config    *Config
+		setupFunc func(schemaDir string) error
+		wantErr   string
+	}{
+		{
+			name:   "Config is nil",
+			config: nil,
+			setupFunc: func(schemaDir string) error {
+				return nil
+			},
+			wantErr: "config cannot be nil",
+		},
+		{
+			name: "Failed to initialise validators",
+			config: &Config{
+				SchemaDir: "/invalid/path",
+			},
+			setupFunc: func(schemaDir string) error {
+				// Do not create the schema directory
+				return nil
+			},
+			wantErr: "ailed to initialise schemaValidator: schema directory does not exist: /invalid/path",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Run the setup function if provided
+			if tt.setupFunc != nil {
+				schemaDir := ""
+				if tt.config != nil {
+					schemaDir = tt.config.SchemaDir
+				}
+				if err := tt.setupFunc(schemaDir); err != nil {
+					t.Fatalf("Setup function failed: %v", err)
+				}
+			}
+
+			// Call the New function with the test config
+			_, _, err := New(context.Background(), tt.config)
+			if (err != nil && !strings.Contains(err.Error(), tt.wantErr)) || (err == nil && tt.wantErr != "") {
+				t.Errorf("Error: New() returned error = %v, expected error = %v", err, tt.wantErr)
+			} else {
+				t.Logf("Test %s passed with expected error: %v", tt.name, err)
+			}
+		})
+	}
+}

pkg/plugin/implementation/signer/cmd/plugin.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"context"
+	"errors"
+
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+	"github.com/beckn/beckn-onix/pkg/plugin/implementation/signer"
+)
+
+// SignerProvider implements the definition.SignerProvider interface.
+type SignerProvider struct{}
+
+// New creates a new Signer instance using the provided configuration.
+func (p SignerProvider) New(ctx context.Context, config map[string]string) (definition.Signer, func() error, error) {
+	if ctx == nil {
+		return nil, nil, errors.New("context cannot be nil")
+	}
+
+	return signer.New(ctx, &signer.Config{})
+}
+
+// Provider is the exported symbol that the plugin manager will look for.
+var Provider = SignerProvider{}

pkg/plugin/implementation/signer/cmd/plugin_test.go

@@ -0,0 +1,101 @@
+package main
+
+import (
+	"context"
+	"testing"
+)
+
+// TestSignerProviderSuccess verifies successful scenarios for SignerProvider.
+func TestSignerProviderSuccess(t *testing.T) {
+	provider := SignerProvider{}
+
+	successTests := []struct {
+		name   string
+		ctx    context.Context
+		config map[string]string
+	}{
+		{
+			name:   "Valid Config",
+			ctx:    context.Background(),
+			config: map[string]string{},
+		},
+		{
+			name:   "Unexpected Config Key",
+			ctx:    context.Background(),
+			config: map[string]string{"unexpected_key": "some_value"},
+		},
+		{
+			name:   "Empty Config",
+			ctx:    context.Background(),
+			config: map[string]string{},
+		},
+		{
+			name:   "Config with empty TTL",
+			ctx:    context.Background(),
+			config: map[string]string{"ttl": ""},
+		},
+		{
+			name:   "Config with negative TTL",
+			ctx:    context.Background(),
+			config: map[string]string{"ttl": "-100"},
+		},
+		{
+			name:   "Config with non-numeric TTL",
+			ctx:    context.Background(),
+			config: map[string]string{"ttl": "not_a_number"},
+		},
+	}
+
+	for _, tt := range successTests {
+		t.Run(tt.name, func(t *testing.T) {
+			signer, close, err := provider.New(tt.ctx, tt.config)
+
+			if err != nil {
+				t.Fatalf("Test %q failed: expected no error, but got: %v", tt.name, err)
+			}
+			if signer == nil {
+				t.Fatalf("Test %q failed: signer instance should not be nil", tt.name)
+			}
+			if close != nil {
+				if err := close(); err != nil {
+					t.Fatalf("Cleanup function returned an error: %v", err)
+				}
+			}
+		})
+	}
+}
+
+// TestSignerProviderFailure verifies failure scenarios for SignerProvider.
+func TestSignerProviderFailure(t *testing.T) {
+	provider := SignerProvider{}
+
+	failureTests := []struct {
+		name    string
+		ctx     context.Context
+		config  map[string]string
+		wantErr bool
+	}{
+		{
+			name:    "Nil Context",
+			ctx:     nil,
+			config:  map[string]string{},
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range failureTests {
+		t.Run(tt.name, func(t *testing.T) {
+			signerInstance, close, err := provider.New(tt.ctx, tt.config)
+
+			if (err != nil) != tt.wantErr {
+				t.Fatalf("Test %q failed: expected error: %v, got: %v", tt.name, tt.wantErr, err)
+			}
+			if signerInstance != nil {
+				t.Fatalf("Test %q failed: expected signer instance to be nil", tt.name)
+			}
+			if close != nil {
+				t.Fatalf("Test %q failed: expected cleanup function to be nil", tt.name)
+			}
+		})
+	}
+}

pkg/plugin/implementation/signer/signer.go

@@ -0,0 +1,73 @@
+package signer
+
+import (
+	"context"
+	"crypto/ed25519"
+	"encoding/base64"
+	"errors"
+	"fmt"
+
+	"golang.org/x/crypto/blake2b"
+)
+
+// Config holds the configuration for the signing process.
+type Config struct {
+}
+
+// Signer implements the Signer interface and handles the signing process.
+type Signer struct {
+	config *Config
+}
+
+// New creates a new Signer instance with the given configuration.
+func New(ctx context.Context, config *Config) (*Signer, func() error, error) {
+	s := &Signer{config: config}
+
+	return s, nil, nil
+}
+
+// hash generates a signing string using BLAKE-512 hashing.
+func hash(payload []byte, createdAt, expiresAt int64) (string, error) {
+	hasher, _ := blake2b.New512(nil)
+
+	_, err := hasher.Write(payload)
+	if err != nil {
+		return "", fmt.Errorf("failed to hash payload: %w", err)
+	}
+
+	hashSum := hasher.Sum(nil)
+	digestB64 := base64.StdEncoding.EncodeToString(hashSum)
+
+	return fmt.Sprintf("(created): %d\n(expires): %d\ndigest: BLAKE-512=%s", createdAt, expiresAt, digestB64), nil
+}
+
+// generateSignature signs the given signing string using the provided private key.
+func generateSignature(signingString []byte, privateKeyBase64 string) ([]byte, error) {
+	privateKeyBytes, err := base64.StdEncoding.DecodeString(privateKeyBase64)
+	if err != nil {
+		return nil, fmt.Errorf("error decoding private key: %w", err)
+	}
+
+	if len(privateKeyBytes) != ed25519.SeedSize {
+		return nil, errors.New("invalid seed length")
+	}
+
+	// Generate the private key from the seed
+	privateKey := ed25519.NewKeyFromSeed(privateKeyBytes)
+	return ed25519.Sign(privateKey, signingString), nil
+}
+
+// Sign generates a digital signature for the provided payload.
+func (s *Signer) Sign(ctx context.Context, body []byte, privateKeyBase64 string, createdAt, expiresAt int64) (string, error) {
+	signingString, err := hash(body, createdAt, expiresAt)
+	if err != nil {
+		return "", err
+	}
+
+	signature, err := generateSignature([]byte(signingString), privateKeyBase64)
+	if err != nil {
+		return "", err
+	}
+
+	return base64.StdEncoding.EncodeToString(signature), nil
+}

pkg/plugin/implementation/signer/signer_test.go

@@ -0,0 +1,104 @@
+package signer
+
+import (
+	"context"
+	"crypto/ed25519"
+	"encoding/base64"
+	"strings"
+	"testing"
+	"time"
+)
+
+// generateTestKeys generates a test private and public key pair in base64 encoding.
+func generateTestKeys() (string, string) {
+	publicKey, privateKey, _ := ed25519.GenerateKey(nil)
+	return base64.StdEncoding.EncodeToString(privateKey.Seed()), base64.StdEncoding.EncodeToString(publicKey)
+}
+
+// TestSignSuccess tests the Sign method with valid inputs to ensure it produces a valid signature.
+func TestSignSuccess(t *testing.T) {
+	privateKey, _ := generateTestKeys()
+	config := Config{}
+	signer, close, _ := New(context.Background(), &config)
+
+	successTests := []struct {
+		name       string
+		payload    []byte
+		privateKey string
+		createdAt  int64
+		expiresAt  int64
+	}{
+		{
+			name:       "Valid Signing",
+			payload:    []byte("test payload"),
+			privateKey: privateKey,
+			createdAt:  time.Now().Unix(),
+			expiresAt:  time.Now().Unix() + 3600,
+		},
+	}
+
+	for _, tt := range successTests {
+		t.Run(tt.name, func(t *testing.T) {
+			signature, err := signer.Sign(context.Background(), tt.payload, tt.privateKey, tt.createdAt, tt.expiresAt)
+			if err != nil {
+				t.Errorf("unexpected error: %v", err)
+			}
+			if len(signature) == 0 {
+				t.Errorf("expected a non-empty signature, but got empty")
+			}
+			if close != nil {
+				if err := close(); err != nil {
+					t.Fatalf("Cleanup function returned an error: %v", err)
+				}
+			}
+		})
+	}
+}
+
+// TestSignFailure tests the Sign method with invalid inputs to ensure proper error handling.
+func TestSignFailure(t *testing.T) {
+	config := Config{}
+	signer, close, _ := New(context.Background(), &config)
+
+	failureTests := []struct {
+		name            string
+		payload         []byte
+		privateKey      string
+		createdAt       int64
+		expiresAt       int64
+		expectErrString string
+	}{
+		{
+			name:            "Invalid Private Key",
+			payload:         []byte("test payload"),
+			privateKey:      "invalid_key",
+			createdAt:       time.Now().Unix(),
+			expiresAt:       time.Now().Unix() + 3600,
+			expectErrString: "error decoding private key",
+		},
+		{
+			name:            "Short Private Key",
+			payload:         []byte("test payload"),
+			privateKey:      base64.StdEncoding.EncodeToString([]byte("short_key")),
+			createdAt:       time.Now().Unix(),
+			expiresAt:       time.Now().Unix() + 3600,
+			expectErrString: "invalid seed length",
+		},
+	}
+
+	for _, tt := range failureTests {
+		t.Run(tt.name, func(t *testing.T) {
+			_, err := signer.Sign(context.Background(), tt.payload, tt.privateKey, tt.createdAt, tt.expiresAt)
+			if err == nil {
+				t.Errorf("expected error but got none")
+			} else if !strings.Contains(err.Error(), tt.expectErrString) {
+				t.Errorf("expected error message to contain %q, got %v", tt.expectErrString, err)
+			}
+			if close != nil {
+				if err := close(); err != nil {
+					t.Fatalf("Cleanup function returned an error: %v", err)
+				}
+			}
+		})
+	}
+}

pkg/plugin/implementation/signvalidator/cmd/plugin.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"context"
+	"errors"
+
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+	"github.com/beckn/beckn-onix/pkg/plugin/implementation/signvalidator"
+)
+
+// provider provides instances of Verifier.
+type provider struct{}
+
+// New initializes a new Verifier instance.
+func (vp provider) New(ctx context.Context, config map[string]string) (definition.SignValidator, func() error, error) {
+	if ctx == nil {
+		return nil, nil, errors.New("context cannot be nil")
+	}
+
+	return signvalidator.New(ctx, &signvalidator.Config{})
+}
+
+// Provider is the exported symbol that the plugin manager will look for.
+var Provider = provider{}

pkg/plugin/implementation/signvalidator/cmd/plugin_test.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"context"
+	"testing"
+)
+
+// TestVerifierProviderSuccess tests successful creation of a verifier.
+func TestVerifierProviderSuccess(t *testing.T) {
+	provider := provider{}
+
+	tests := []struct {
+		name   string
+		ctx    context.Context
+		config map[string]string
+	}{
+		{
+			name:   "Successful creation",
+			ctx:    context.Background(),
+			config: map[string]string{},
+		},
+		{
+			name:   "Nil context",
+			ctx:    context.TODO(),
+			config: map[string]string{},
+		},
+		{
+			name:   "Empty config",
+			ctx:    context.Background(),
+			config: map[string]string{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			verifier, close, err := provider.New(tt.ctx, tt.config)
+
+			if err != nil {
+				t.Fatalf("Expected no error, but got: %v", err)
+			}
+			if verifier == nil {
+				t.Fatal("Expected verifier instance to be non-nil")
+			}
+			if close != nil {
+				if err := close(); err != nil {
+					t.Fatalf("Test %q failed: cleanup function returned an error: %v", tt.name, err)
+				}
+			}
+		})
+	}
+}
+
+// TestVerifierProviderFailure tests cases where verifier creation should fail.
+func TestVerifierProviderFailure(t *testing.T) {
+	provider := provider{}
+
+	tests := []struct {
+		name    string
+		ctx     context.Context
+		config  map[string]string
+		wantErr bool
+	}{
+		{
+			name:    "Nil context failure",
+			ctx:     nil,
+			config:  map[string]string{},
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			verifierInstance, close, err := provider.New(tt.ctx, tt.config)
+
+			if (err != nil) != tt.wantErr {
+				t.Fatalf("Expected error: %v, but got: %v", tt.wantErr, err)
+			}
+			if verifierInstance != nil {
+				t.Fatal("Expected verifier instance to be nil")
+			}
+			if close != nil {
+				if err := close(); err != nil {
+					t.Fatalf("Test %q failed: cleanup function returned an error: %v", tt.name, err)
+				}
+			}
+
+		})
+	}
+}

pkg/plugin/implementation/signvalidator/signvalidator.go

@@ -0,0 +1,110 @@
+package signvalidator
+
+import (
+	"context"
+	"crypto/ed25519"
+	"encoding/base64"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+	"golang.org/x/crypto/blake2b"
+)
+
+// Config struct for Verifier.
+type Config struct {
+}
+
+// validator implements the validator interface.
+type validator struct {
+	config *Config
+}
+
+// New creates a new Verifier instance.
+func New(ctx context.Context, config *Config) (*validator, func() error, error) {
+	v := &validator{config: config}
+
+	return v, nil, nil
+}
+
+// Verify checks the signature for the given payload and public key.
+func (v *validator) Validate(ctx context.Context, body []byte, header string, publicKeyBase64 string) error {
+	createdTimestamp, expiredTimestamp, signature, err := parseAuthHeader(header)
+	if err != nil {
+		return model.NewSignValidationErr(fmt.Errorf("error parsing header: %w", err))
+	}
+
+	signatureBytes, err := base64.StdEncoding.DecodeString(signature)
+	if err != nil {
+		return fmt.Errorf("error decoding signature: %w", err)
+	}
+
+	currentTime := time.Now().Unix()
+	if createdTimestamp > currentTime || currentTime > expiredTimestamp {
+		return model.NewSignValidationErr(fmt.Errorf("signature is expired or not yet valid"))
+	}
+
+	createdTime := time.Unix(createdTimestamp, 0)
+	expiredTime := time.Unix(expiredTimestamp, 0)
+
+	signingString := hash(body, createdTime.Unix(), expiredTime.Unix())
+
+	decodedPublicKey, err := base64.StdEncoding.DecodeString(publicKeyBase64)
+	if err != nil {
+		return model.NewSignValidationErr(fmt.Errorf("error decoding public key: %w", err))
+	}
+
+	if !ed25519.Verify(ed25519.PublicKey(decodedPublicKey), []byte(signingString), signatureBytes) {
+		return model.NewSignValidationErr(fmt.Errorf("signature verification failed"))
+	}
+
+	return nil
+}
+
+// parseAuthHeader extracts signature values from the Authorization header.
+func parseAuthHeader(header string) (int64, int64, string, error) {
+	header = strings.TrimPrefix(header, "Signature ")
+
+	parts := strings.Split(header, ",")
+	signatureMap := make(map[string]string)
+
+	for _, part := range parts {
+		keyValue := strings.SplitN(strings.TrimSpace(part), "=", 2)
+		if len(keyValue) == 2 {
+			key := strings.TrimSpace(keyValue[0])
+			value := strings.Trim(keyValue[1], "\"")
+			signatureMap[key] = value
+		}
+	}
+
+	createdTimestamp, err := strconv.ParseInt(signatureMap["created"], 10, 64)
+	if err != nil {
+		// TODO: Return appropriate error code when Error Code Handling Module is ready
+		return 0, 0, "", fmt.Errorf("invalid created timestamp: %w", err)
+	}
+
+	expiredTimestamp, err := strconv.ParseInt(signatureMap["expires"], 10, 64)
+	if err != nil {
+		return 0, 0, "", model.NewSignValidationErr(fmt.Errorf("invalid expires timestamp: %w", err))
+	}
+
+	signature := signatureMap["signature"]
+	if signature == "" {
+		// TODO: Return appropriate error code when Error Code Handling Module is ready
+		return 0, 0, "", model.NewSignValidationErr(fmt.Errorf("signature missing in header"))
+	}
+
+	return createdTimestamp, expiredTimestamp, signature, nil
+}
+
+// hash constructs a signing string for verification.
+func hash(payload []byte, createdTimestamp, expiredTimestamp int64) string {
+	hasher, _ := blake2b.New512(nil)
+	hasher.Write(payload)
+	hashSum := hasher.Sum(nil)
+	digestB64 := base64.StdEncoding.EncodeToString(hashSum)
+
+	return fmt.Sprintf("(created): %d\n(expires): %d\ndigest: BLAKE-512=%s", createdTimestamp, expiredTimestamp, digestB64)
+}

pkg/plugin/implementation/signvalidator/signvalidator_test.go

@@ -0,0 +1,147 @@
+package signvalidator
+
+import (
+	"context"
+	"crypto/ed25519"
+	"encoding/base64"
+	"strconv"
+	"testing"
+	"time"
+)
+
+// generateTestKeyPair generates a new ED25519 key pair for testing.
+func generateTestKeyPair() (string, string) {
+	publicKey, privateKey, _ := ed25519.GenerateKey(nil)
+	return base64.StdEncoding.EncodeToString(privateKey), base64.StdEncoding.EncodeToString(publicKey)
+}
+
+// signTestData creates a valid signature for test cases.
+func signTestData(privateKeyBase64 string, body []byte, createdAt, expiresAt int64) string {
+	privateKeyBytes, _ := base64.StdEncoding.DecodeString(privateKeyBase64)
+	privateKey := ed25519.PrivateKey(privateKeyBytes)
+
+	signingString := hash(body, createdAt, expiresAt)
+	signature := ed25519.Sign(privateKey, []byte(signingString))
+
+	return base64.StdEncoding.EncodeToString(signature)
+}
+
+// TestVerifySuccessCases tests all valid signature verification cases.
+func TestVerifySuccess(t *testing.T) {
+	privateKeyBase64, publicKeyBase64 := generateTestKeyPair()
+
+	tests := []struct {
+		name      string
+		body      []byte
+		createdAt int64
+		expiresAt int64
+	}{
+		{
+			name:      "Valid Signature",
+			body:      []byte("Test Payload"),
+			createdAt: time.Now().Unix(),
+			expiresAt: time.Now().Unix() + 3600,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			signature := signTestData(privateKeyBase64, tt.body, tt.createdAt, tt.expiresAt)
+			header := `Signature created="` + strconv.FormatInt(tt.createdAt, 10) +
+				`", expires="` + strconv.FormatInt(tt.expiresAt, 10) +
+				`", signature="` + signature + `"`
+
+			verifier, close, _ := New(context.Background(), &Config{})
+			err := verifier.Validate(context.Background(), tt.body, header, publicKeyBase64)
+
+			if err != nil {
+				t.Fatalf("Expected no error, but got: %v", err)
+			}
+			if close != nil {
+				if err := close(); err != nil {
+					t.Fatalf("Test %q failed: cleanup function returned an error: %v", tt.name, err)
+				}
+			}
+		})
+	}
+}
+
+// TestVerifyFailureCases tests all invalid signature verification cases.
+func TestVerifyFailure(t *testing.T) {
+	privateKeyBase64, publicKeyBase64 := generateTestKeyPair()
+	_, wrongPublicKeyBase64 := generateTestKeyPair()
+
+	tests := []struct {
+		name   string
+		body   []byte
+		header string
+		pubKey string
+	}{
+		{
+			name:   "Missing Authorization Header",
+			body:   []byte("Test Payload"),
+			header: "",
+			pubKey: publicKeyBase64,
+		},
+		{
+			name:   "Malformed Header",
+			body:   []byte("Test Payload"),
+			header: `InvalidSignature created="wrong"`,
+			pubKey: publicKeyBase64,
+		},
+		{
+			name: "Invalid Base64 Signature",
+			body: []byte("Test Payload"),
+			header: `Signature created="` + strconv.FormatInt(time.Now().Unix(), 10) +
+				`", expires="` + strconv.FormatInt(time.Now().Unix()+3600, 10) +
+				`", signature="!!INVALIDBASE64!!"`,
+			pubKey: publicKeyBase64,
+		},
+		{
+			name: "Expired Signature",
+			body: []byte("Test Payload"),
+			header: `Signature created="` + strconv.FormatInt(time.Now().Unix()-7200, 10) +
+				`", expires="` + strconv.FormatInt(time.Now().Unix()-3600, 10) +
+				`", signature="` + signTestData(privateKeyBase64, []byte("Test Payload"), time.Now().Unix()-7200, time.Now().Unix()-3600) + `"`,
+			pubKey: publicKeyBase64,
+		},
+		{
+			name: "Invalid Public Key",
+			body: []byte("Test Payload"),
+			header: `Signature created="` + strconv.FormatInt(time.Now().Unix(), 10) +
+				`", expires="` + strconv.FormatInt(time.Now().Unix()+3600, 10) +
+				`", signature="` + signTestData(privateKeyBase64, []byte("Test Payload"), time.Now().Unix(), time.Now().Unix()+3600) + `"`,
+			pubKey: wrongPublicKeyBase64,
+		},
+		{
+			name: "Invalid Expires Timestamp",
+			body: []byte("Test Payload"),
+			header: `Signature created="` + strconv.FormatInt(time.Now().Unix(), 10) +
+				`", expires="invalid_timestamp"`,
+			pubKey: publicKeyBase64,
+		},
+		{
+			name: "Signature Missing in Headers",
+			body: []byte("Test Payload"),
+			header: `Signature created="` + strconv.FormatInt(time.Now().Unix(), 10) +
+				`", expires="` + strconv.FormatInt(time.Now().Unix()+3600, 10) + `"`,
+			pubKey: publicKeyBase64,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			verifier, close, _ := New(context.Background(), &Config{})
+			err := verifier.Validate(context.Background(), tt.body, tt.header, tt.pubKey)
+
+			if err == nil {
+				t.Fatal("Expected an error but got none")
+			}
+			if close != nil {
+				if err := close(); err != nil {
+					t.Fatalf("Test %q failed: cleanup function returned an error: %v", tt.name, err)
+				}
+			}
+		})
+	}
+}

pkg/plugin/manager.go

@@ -1,12 +1,22 @@
 package plugin
 
 import (
+<<<<<<< HEAD
 	"context"
 	"fmt"
+=======
+	"archive/zip"
+	"context"
+	"fmt"
+	"io"
+	"io/fs"
+	"net/http"
+>>>>>>> fdec61e90d57d3d82345d023c1a0d33d5a90583b
 	"os"
 	"path/filepath"
 	"plugin"
 	"strings"
+<<<<<<< HEAD
 
 	"github.com/beckn/beckn-onix/pkg/plugin/definition"
 
@@ -142,4 +152,381 @@ func LoadConfig(path string) (*Config, error) {
 	}
 
 	return &cfg, nil
+=======
+	"time"
+
+	"github.com/beckn/beckn-onix/pkg/log"
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+)
+
+type onixPlugin interface {
+	Lookup(string) (plugin.Symbol, error)
+}
+
+// Manager is responsible for managing dynamically loaded plugins.
+type Manager struct {
+	plugins map[string]onixPlugin // plugins holds the dynamically loaded plugins.
+	closers []func()              // closers contains functions to release resources when the manager is closed.
+}
+
+func validateMgrCfg(cfg *ManagerConfig) error {
+	if cfg.Root == "" {
+		return fmt.Errorf("root path cannot be empty")
+	}
+	return nil
+}
+
+// NewManager initializes a new Manager instance by loading plugins from the specified configuration.
+func NewManager(ctx context.Context, cfg *ManagerConfig) (*Manager, func(), error) {
+	if err := validateMgrCfg(cfg); err != nil {
+		return nil, nil, fmt.Errorf("Invalid config: %w", err)
+	}
+	log.Debugf(ctx, "RemoteRoot : %s", cfg.RemoteRoot)
+	if len(cfg.RemoteRoot) != 0 {
+		log.Debugf(ctx, "Unzipping files from  : %s to : %s", cfg.RemoteRoot, cfg.Root)
+		if err := unzip(cfg.RemoteRoot, cfg.Root); err != nil {
+			return nil, nil, err
+		}
+	}
+	plugins, err := plugins(ctx, cfg)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	closers := []func(){}
+	return &Manager{plugins: plugins, closers: closers}, func() {
+		for _, closer := range closers {
+			closer()
+		}
+	}, nil
+}
+
+func plugins(ctx context.Context, cfg *ManagerConfig) (map[string]onixPlugin, error) {
+	plugins := make(map[string]onixPlugin)
+
+	err := filepath.WalkDir(cfg.Root, func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if d.IsDir() {
+			return nil // Skip directories
+		}
+
+		if strings.HasSuffix(d.Name(), ".so") {
+			id := strings.TrimSuffix(d.Name(), ".so") // Extract plugin ID
+			p, elapsed, err := loadPlugin(ctx, path, id)
+			if err != nil {
+				return err
+			}
+			plugins[id] = p
+			log.Debugf(ctx, "Loaded plugin: %s in %s", id, elapsed)
+		}
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return plugins, nil
+}
+
+// loadPlugin attempts to load a plugin from the given path and logs the execution time.
+func loadPlugin(ctx context.Context, path, id string) (onixPlugin, time.Duration, error) {
+	log.Debugf(ctx, "Loading plugin: %s", id)
+	start := time.Now()
+
+	p, err := plugin.Open(path)
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to open plugin %s: %w", id, err)
+	}
+
+	elapsed := time.Since(start)
+	return p, elapsed, nil
+}
+
+func provider[T any](plugins map[string]onixPlugin, id string) (T, error) {
+	var zero T
+	pgn, ok := plugins[id]
+	if !ok {
+		return zero, fmt.Errorf("plugin %s not found", id)
+	}
+	provider, err := pgn.Lookup("Provider")
+	if err != nil {
+		return zero, fmt.Errorf("failed to lookup Provider for %s: %w", id, err)
+	}
+	log.Debugf(context.Background(), "Provider type: %T\n", provider)
+
+	pp, ok := provider.(T)
+	if !ok {
+		return zero, fmt.Errorf("failed to cast Provider for %s", id)
+	}
+	log.Debugf(context.Background(), "Casting successful for: %s", provider)
+	return pp, nil
+}
+
+// Publisher returns a Publisher instance based on the provided configuration.
+// It reuses the loaded provider and registers a cleanup function.
+func (m *Manager) Publisher(ctx context.Context, cfg *Config) (definition.Publisher, error) {
+	pp, err := provider[definition.PublisherProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	p, closer, err := pp.New(ctx, cfg.Config)
+	if err != nil {
+		return nil, err
+	}
+	if closer != nil {
+		m.closers = append(m.closers, func() {
+			if err := closer(); err != nil {
+				panic(err)
+			}
+		})
+	}
+	return p, nil
+}
+
+// SchemaValidator returns a SchemaValidator instance based on the provided configuration.
+// It registers a cleanup function for resource management.
+func (m *Manager) SchemaValidator(ctx context.Context, cfg *Config) (definition.SchemaValidator, error) {
+	vp, err := provider[definition.SchemaValidatorProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	v, closer, err := vp.New(ctx, cfg.Config)
+	if err != nil {
+		return nil, err
+	}
+	if closer != nil {
+		m.closers = append(m.closers, func() {
+			if err := closer(); err != nil {
+				panic(err)
+			}
+		})
+	}
+	return v, nil
+}
+
+// Router returns a Router instance based on the provided configuration.
+// It registers a cleanup function for resource management.
+func (m *Manager) Router(ctx context.Context, cfg *Config) (definition.Router, error) {
+	rp, err := provider[definition.RouterProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	router, closer, err := rp.New(ctx, cfg.Config)
+	if err != nil {
+		return nil, err
+	}
+	if closer != nil {
+		m.closers = append(m.closers, func() {
+			if err := closer(); err != nil {
+				panic(err)
+			}
+		})
+	}
+	return router, nil
+}
+
+// Middleware returns an HTTP middleware function based on the provided configuration.
+func (m *Manager) Middleware(ctx context.Context, cfg *Config) (func(http.Handler) http.Handler, error) {
+	mwp, err := provider[definition.MiddlewareProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	return mwp.New(ctx, cfg.Config)
+}
+
+// Step returns a Step instance based on the provided configuration.
+func (m *Manager) Step(ctx context.Context, cfg *Config) (definition.Step, error) {
+	sp, err := provider[definition.StepProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	step, closer, error := sp.New(ctx, cfg.Config)
+	if closer != nil {
+		m.closers = append(m.closers, closer)
+	}
+	return step, error
+}
+
+// Cache returns a Cache instance based on the provided configuration.
+// It registers a cleanup function for resource management.
+func (m *Manager) Cache(ctx context.Context, cfg *Config) (definition.Cache, error) {
+	cp, err := provider[definition.CacheProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	c, closer, err := cp.New(ctx, cfg.Config)
+	if err != nil {
+		return nil, err
+	}
+	if closer != nil {
+		m.closers = append(m.closers, func() {
+			if err := closer(); err != nil {
+				panic(err)
+			}
+		})
+	}
+	return c, nil
+}
+
+// Signer returns a Signer instance based on the provided configuration.
+// It registers a cleanup function for resource management.
+func (m *Manager) Signer(ctx context.Context, cfg *Config) (definition.Signer, error) {
+	sp, err := provider[definition.SignerProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	s, closer, err := sp.New(ctx, cfg.Config)
+	if err != nil {
+		return nil, err
+	}
+	if closer != nil {
+		m.closers = append(m.closers, func() {
+			if err := closer(); err != nil {
+				panic(err)
+			}
+		})
+	}
+	return s, nil
+}
+
+// Encryptor returns an Encrypter instance based on the provided configuration.
+// It registers a cleanup function for resource management.
+func (m *Manager) Encryptor(ctx context.Context, cfg *Config) (definition.Encrypter, error) {
+	ep, err := provider[definition.EncrypterProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	encrypter, closer, err := ep.New(ctx, cfg.Config)
+	if err != nil {
+		return nil, err
+	}
+	if closer != nil {
+		m.closers = append(m.closers, func() {
+			if err := closer(); err != nil {
+				panic(err)
+			}
+		})
+	}
+	return encrypter, nil
+}
+
+// Decryptor returns a Decrypter instance based on the provided configuration.
+// It registers a cleanup function for resource management.
+func (m *Manager) Decryptor(ctx context.Context, cfg *Config) (definition.Decrypter, error) {
+	dp, err := provider[definition.DecrypterProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+
+	decrypter, closer, err := dp.New(ctx, cfg.Config)
+	if err != nil {
+		return nil, err
+	}
+
+	if closer != nil {
+		m.closers = append(m.closers, func() {
+			if err := closer(); err != nil {
+				panic(err)
+			}
+		})
+	}
+
+	return decrypter, nil
+}
+
+// SignValidator returns a SignValidator instance based on the provided configuration.
+// It registers a cleanup function for resource management.
+func (m *Manager) SignValidator(ctx context.Context, cfg *Config) (definition.SignValidator, error) {
+	svp, err := provider[definition.SignValidatorProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	v, closer, err := svp.New(ctx, cfg.Config)
+	if err != nil {
+		return nil, err
+	}
+	if closer != nil {
+		m.closers = append(m.closers, func() {
+			if err := closer(); err != nil {
+				panic(err)
+			}
+		})
+	}
+	return v, nil
+}
+
+// KeyManager returns a KeyManager instance based on the provided configuration.
+// It reuses the loaded provider.
+func (m *Manager) KeyManager(ctx context.Context, cache definition.Cache, rClient definition.RegistryLookup, cfg *Config) (definition.KeyManager, error) {
+
+	kmp, err := provider[definition.KeyManagerProvider](m.plugins, cfg.ID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load provider for %s: %w", cfg.ID, err)
+	}
+	km, closer, err := kmp.New(ctx, cache, rClient, cfg.Config)
+	if err != nil {
+		return nil, err
+	}
+	if closer != nil {
+		m.closers = append(m.closers, func() {
+			if err := closer(); err != nil {
+				panic(err)
+			}
+		})
+	}
+	return km, nil
+}
+
+// Validator implements handler.PluginManager.
+func (m *Manager) Validator(ctx context.Context, cfg *Config) (definition.SchemaValidator, error) {
+	panic("unimplemented")
+}
+
+// Unzip extracts a ZIP file to the specified destination
+func unzip(src, dest string) error {
+	r, err := zip.OpenReader(src)
+	if err != nil {
+		return err
+	}
+	defer r.Close()
+
+	// Ensure the destination directory exists
+	if err := os.MkdirAll(dest, 0755); err != nil {
+		return err
+	}
+
+	for _, f := range r.File {
+
+		fpath := filepath.Join(dest, f.Name)
+		// Ensure directory exists
+		log.Debugf(context.Background(), "Pain : fpath: %s,filepath.Dir(fpath): %s", fpath, filepath.Dir(fpath))
+		if err := os.MkdirAll(filepath.Dir(fpath), os.ModePerm); err != nil {
+			return err
+		}
+		// Open the file inside the zip
+		srcFile, err := f.Open()
+		if err != nil {
+			return err
+		}
+		defer srcFile.Close()
+
+		// Create the destination file
+		dstFile, err := os.Create(fpath)
+		if err != nil {
+			return err
+		}
+		defer dstFile.Close()
+
+		// Copy file contents
+		if _, err := io.Copy(dstFile, srcFile); err != nil {
+			return err
+		}
+	}
+
+	return nil
+>>>>>>> fdec61e90d57d3d82345d023c1a0d33d5a90583b
 }

pkg/plugin/testData/payloads/Assign Driver Assign_Driver_post_OnConfirm(Self-Pickup)/on_init.json

@@ -1,357 +0,0 @@
-{
-    "context": {
-      "action": "on_init",
-      "bap_id": "example-bap.com",
-      "bap_uri": "https://example-bap.com/prod/trv10",
-      "bpp_id": "example-bpp.com",
-      "bpp_uri": "https://example-bpp.com/prod/seller",
-      "domain": "ONDC:TRV10",
-      "location": {
-        "city": {
-          "code": "std:080"
-        },
-        "country": {
-          "code": "IND"
-        }
-      },
-      "message_id": "8926b747-0362-4fcc-b795-0994a6287700",
-      "timestamp": "2023-12-09T14:11:32.859Z",
-      "transaction_id": "870782be-6757-43f1-945c-8eeaf9536259",
-      "ttl": "PT30S",
-      "version": "2.0.1"
-    },
-    "message": {
-      "order": {
-        "cancellation_terms": [
-          {
-            "cancellation_fee": {
-              "percentage": "0"
-            },
-            "fulfillment_state": {
-              "descriptor": {
-                "code": "RIDE_ASSIGNED"
-              }
-            },
-            "reason_required": true
-          },
-          {
-            "cancellation_fee": {
-              "amount": {
-                "currency": "INR",
-                "value": "30"
-              }
-            },
-            "fulfillment_state": {
-              "descriptor": {
-                "code": "RIDE_ENROUTE_PICKUP"
-              }
-            },
-            "reason_required": true
-          },
-          {
-            "cancellation_fee": {
-              "amount": {
-                "currency": "INR",
-                "value": "50"
-              }
-            },
-            "fulfillment_state": {
-              "descriptor": {
-                "code": "RIDE_ARRIVED_PICKUP"
-              }
-            },
-            "reason_required": true
-          },
-          {
-            "cancellation_fee": {
-              "percentage": "100"
-            },
-            "fulfillment_state": {
-              "descriptor": {
-                "code": "RIDE_STARTED"
-              }
-            },
-            "reason_required": true
-          }
-        ],
-        "fulfillments": [
-          {
-            "id": "F1",
-            "customer": {
-              "contact": {
-                "phone": "9876556789"
-              },
-              "person": {
-                "name": "Joe Adams"
-              }
-            },
-            "stops": [
-              {
-                "location": {
-                  "gps": "13.008935, 77.644408"
-                },
-                "type": "START",
-                "instructions": {
-                  "short_desc": "short description of the location",
-                  "long_desc": "long description of the location"
-                }
-              },
-              {
-                "location": {
-                  "gps": "12.971186, 77.586812"
-                },
-                "type": "END"
-              }
-            ],
-            "tags": [
-              {
-                "descriptor": {
-                  "code": "ROUTE_INFO",
-                  "name": "Route Information"
-                },
-                "display": true,
-                "list": [
-                  {
-                    "descriptor": {
-                      "code": "ENCODED_POLYLINE",
-                      "name": "Path"
-                    },
-                    "value": "_p~iF~ps|U_ulLnnqC_mqNvxq`@"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "WAYPOINTS",
-                      "name": "Waypoints"
-                    },
-                    "value": "[{\"gps\":\"12.909982, 77.611822\"},{\"gps\":\"12.909982,77.611822\"},{\"gps\":\"12.909982,77.611822\"},{\"gps\":\"12.909982, 77.611822\"}]"
-                  }
-                ]
-              }
-            ],
-            "type": "DELIVERY",
-            "vehicle": {
-              "category": "AUTO_RICKSHAW",
-              "variant": "EV"
-            }
-          }
-        ],
-        "items": [
-          {
-            "descriptor": {
-              "code": "RIDE",
-              "name": "Auto Ride"
-            },
-            "fulfillment_ids": [
-              "F1"
-            ],
-            "id": "I1",
-            "location_ids": [
-              "L1",
-              "L3"
-            ],
-            "payment_ids": [
-              "PA1"
-            ],
-            "price": {
-              "currency": "INR",
-              "maximum_value": "176",
-              "minimum_value": "136",
-              "value": "146"
-            },
-            "tags": [
-              {
-                "descriptor": {
-                  "code": "FARE_POLICY",
-                  "name": "Daytime Charges"
-                },
-                "display": true,
-                "list": [
-                  {
-                    "descriptor": {
-                      "code": "MIN_FARE"
-                    },
-                    "value": "30"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "MIN_FARE_DISTANCE_KM"
-                    },
-                    "value": "2"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "PER_KM_CHARGE"
-                    },
-                    "value": "15"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "PICKUP_CHARGE"
-                    },
-                    "value": "10"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "WAITING_CHARGE_PER_MIN"
-                    },
-                    "value": "2"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "NIGHT_CHARGE_MULTIPLIER"
-                    },
-                    "value": "1.5"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "NIGHT_SHIFT_START_TIME"
-                    },
-                    "value": "22:00:00"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "NIGHT_SHIFT_END_TIME"
-                    },
-                    "value": "05:00:00"
-                  }
-                ]
-              },
-              {
-                "descriptor": {
-                  "code": "INFO",
-                  "name": "General Information"
-                },
-                "display": true,
-                "list": [
-                  {
-                    "descriptor": {
-                      "code": "DISTANCE_TO_NEAREST_DRIVER_METER"
-                    },
-                    "value": "661"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "ETA_TO_NEAREST_DRIVER_MIN"
-                    },
-                    "value": "3"
-                  }
-                ]
-              }
-            ]
-          }
-        ],
-        "payments": [
-          {
-            "collected_by": "BPP",
-            "id": "PA1",
-            "params": {
-              "bank_account_number": "xxxxxxxxxxxxxx",
-              "bank_code": "XXXXXXXX",
-              "virtual_payment_address": "9988199772@okicic"
-            },
-            "status": "NOT-PAID",
-            "tags": [
-              {
-                "descriptor": {
-                  "code": "BUYER_FINDER_FEES"
-                },
-                "display": false,
-                "list": [
-                  {
-                    "descriptor": {
-                      "code": "BUYER_FINDER_FEES_PERCENTAGE"
-                    },
-                    "value": "1"
-                  }
-                ]
-              },
-              {
-                "descriptor": {
-                  "code": "SETTLEMENT_TERMS"
-                },
-                "display": false,
-                "list": [
-                  {
-                    "descriptor": {
-                      "code": "DELAY_INTEREST"
-                    },
-                    "value": "5"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "SETTLEMENT_TYPE"
-                    },
-                    "value": "UPI"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "SETTLEMENT_WINDOW"
-                    },
-                    "value": "PT2D"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "SETTLEMENT_BASIS"
-                    },
-                    "value": "DELIVERY"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "MANDATORY_ARBITRATION"
-                    },
-                    "value": "true"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "COURT_JURISDICTION"
-                    },
-                    "value": "New Delhi"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "STATIC_TERMS"
-                    },
-                    "value": "https://example-test-bpp.com/static-terms.txt"
-                  },
-                  {
-                    "descriptor": {
-                      "code": "SETTLEMENT_AMOUNT"
-                    },
-                    "value": "1.46"
-                  }
-                ]
-              }
-            ],
-            "type": "ON-FULFILLMENT"
-          }
-        ],
-        "provider": {
-          "id": "P1"
-        },
-        "quote": {
-          "breakup": [
-            {
-              "price": {
-                "currency": "INR",
-                "value": "30"
-              },
-              "title": "BASE_FARE"
-            },
-            {
-              "price": {
-                "currency": "INR",
-                "value": "116"
-              },
-              "title": "DISTANCE_FARE"
-            }
-          ],
-          "price": {
-            "currency": "INR",
-            "value": "146"
-          },
-          "ttl": "PT30S"
-        }
-      }
-    }
-  }
-  

pkg/plugin/testData/payloads/Assign Driver Assign_Driver_post_OnConfirm(Self-Pickup)/search.json

@@ -1,81 +0,0 @@
-{
-    "context": {
-      "action": "search",
-      "bap_id": "example-bap.com",
-      "bap_uri": "https://example-bap.com/prod/trv10",
-      "domain": "ONDC:TRV10",
-      "location": {
-        "city": {
-          "code": "std:080"
-        },
-        "country": {
-          "code": "IND"
-        }
-      },
-      "message_id": "40963dc1-e402-4f4d-ae70-7c5864ca682c",
-      "timestamp": "2023-12-09T13:39:56.645Z",
-      "transaction_id": "870782be-6757-43f1-945c-8eeaf9536259",
-      "ttl": "PT30S",
-      "version": "2.0.1"
-    },
-    "message": {
-      "intent": {
-        "fulfillment": {
-          "stops": [
-            {
-              "location": {
-                "gps": "13.008935, 77.644408"
-              },
-              "type": "START"
-            },
-            {
-              "location": {
-                "gps": "12.971186, 77.586812"
-              },
-              "type": "END"
-            }
-          ]
-        },
-        "payment": {
-          "collected_by": "BPP",
-          "tags": [
-            {
-              "descriptor": {
-                "code": "BUYER_FINDER_FEES"
-              },
-              "display": false,
-              "list": [
-                {
-                  "descriptor": {
-                    "code": "BUYER_FINDER_FEES_PERCENTAGE"
-                  },
-                  "value": "1"
-                }
-              ]
-            },
-            {
-              "descriptor": {
-                "code": "SETTLEMENT_TERMS"
-              },
-              "display": false,
-              "list": [
-                {
-                  "descriptor": {
-                    "code": "DELAY_INTEREST"
-                  },
-                  "value": "5"
-                },
-                {
-                  "descriptor": {
-                    "code": "STATIC_TERMS"
-                  },
-                  "value": "https://example-test-bap.com/static-terms.txt"
-                }
-              ]
-            }
-          ]
-        }
-      }
-    }
-  }
-  

pkg/plugin/testData/payloads/Assign_Driver_on_onConfirm/search.json

@@ -1,86 +0,0 @@
-{
-  "context": {
-    "action": "search",
-    "bap_id": "example-bap.com",
-    "bap_uri": "https://example-bap.com/prod/trv10",
-    "domain": "ONDC:TRV10",
-    "location": {
-      "city": {
-        "code": "std:080"
-      },
-      "country": {
-        "code": "IND"
-      }
-    },
-    "message_id": "40963dc1-e402-4f4d-ae70-7c5864ca682c",
-    "timestamp": "2023-12-09T13:40:21.452Z",
-    "transaction_id": "870782be-6757-43f1-945c-8eeaf9536259",
-    "ttl": "PT30S",
-    "version": "2.0.1"
-  },
-  "message": {
-    "intent": {
-      "fulfillment": {
-        "stops": [
-          {
-            "location": {
-              "gps": "13.008935, 77.644408"
-            },
-            "type": "START"
-          },
-          {
-            "location": {
-              "gps": "12.971186, 77.586812"
-            },
-            "type": "END"
-          }
-        ]
-      },
-      "payment": {
-        "collected_by": "BAP",
-        "tags": [
-          {
-            "descriptor": {
-              "code": "BUYER_FINDER_FEES"
-            },
-            "display": false,
-            "list": [
-              {
-                "descriptor": {
-                  "code": "BUYER_FINDER_FEES_PERCENTAGE"
-                },
-                "value": "1"
-              }
-            ]
-          },
-          {
-            "descriptor": {
-              "code": "SETTLEMENT_TERMS"
-            },
-            "display": false,
-            "list": [
-              {
-                "descriptor": {
-                  "code": "SETTLEMENT_WINDOW"
-                },
-                "value": "PT1D"
-              },
-              {
-                "descriptor": {
-                  "code": "SETTLEMENT_BASIS"
-                },
-                "value": "DELIVERY"
-              },
-              {
-                "descriptor": {
-                  "code": "STATIC_TERMS"
-                },
-                "value": "https://example-test-bap.com/static-terms.txt"
-              }
-            ]
-          }
-        ]
-      }
-    }
-  }
-}

pkg/plugin/testdata/dummy.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"context"
+
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+	"github.com/beckn/beckn-onix/pkg/plugin/implementation/encrypter"
+)
+
+// encrypterProvider implements the definition.encrypterProvider interface.
+type encrypterProvider struct{}
+
+func (ep encrypterProvider) New(ctx context.Context, config map[string]string) (definition.Encrypter, func() error, error) {
+	return encrypter.New(ctx)
+}
+
+// Provider is the exported symbol that the plugin manager will look for.
+var Provider = encrypterProvider{}

pkg/response/response.go

@@ -3,150 +3,87 @@ package response
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
-	"strings"
+	"net/http"
+
+	"github.com/beckn/beckn-onix/pkg/log"
+	"github.com/beckn/beckn-onix/pkg/model"
 )
 
-type ErrorType string
-
-const (
-	SchemaValidationErrorType ErrorType = "SCHEMA_VALIDATION_ERROR"
-	InvalidRequestErrorType   ErrorType = "INVALID_REQUEST"
-)
-
-type BecknRequest struct {
-	Context map[string]interface{} `json:"context,omitempty"`
-}
-type Error struct {
-	Code    string `json:"code,omitempty"`
-	Message string `json:"message,omitempty"`
-	Paths   string `json:"paths,omitempty"`
-}
-
-// SchemaValidationErr represents a collection of schema validation failures.
-type SchemaValidationErr struct {
-	Errors []Error
-}
-
-// Error implements the error interface for SchemaValidationErr.
-func (e *SchemaValidationErr) Error() string {
-	var errorMessages []string
-	for _, err := range e.Errors {
-		errorMessages = append(errorMessages, fmt.Sprintf("%s: %s", err.Paths, err.Message))
-	}
-	return strings.Join(errorMessages, "; ")
-}
-
-type Message struct {
-	Ack struct {
-		Status string `json:"status,omitempty"`
-	} `json:"ack,omitempty"`
-	Error *Error `json:"error,omitempty"`
-}
-type BecknResponse struct {
-	Context map[string]interface{} `json:"context,omitempty"`
-	Message Message                `json:"message,omitempty"`
-}
-type ClientFailureBecknResponse struct {
-	Context map[string]interface{} `json:"context,omitempty"`
-	Error   *Error                 `json:"error,omitempty"`
-}
-
-var errorMap = map[ErrorType]Error{
-	SchemaValidationErrorType: {
-		Code:    "400",
-		Message: "Schema validation failed",
-	},
-	InvalidRequestErrorType: {
-		Code:    "401",
-		Message: "Invalid request format",
-	},
-}
-var DefaultError = Error{
-	Code:    "500",
-	Message: "Internal server error",
-}
-
-func Nack(ctx context.Context, tp ErrorType, paths string, body []byte) ([]byte, error) {
-	var req BecknRequest
-	if err := json.Unmarshal(body, &req); err != nil {
-		return nil, fmt.Errorf("failed to parse request: %w", err)
-	}
-	errorObj, ok := errorMap[tp]
-	if paths != "" {
-		errorObj.Paths = paths
-	}
-	var response BecknResponse
-	if !ok {
-		response = BecknResponse{
-			Context: req.Context,
-			Message: Message{
-				Ack: struct {
-					Status string `json:"status,omitempty"`
-				}{
-					Status: "NACK",
-				},
-				Error: &DefaultError,
-			},
-		}
-	} else {
-		response = BecknResponse{
-			Context: req.Context,
-			Message: Message{
-				Ack: struct {
-					Status string `json:"status,omitempty"`
-				}{
-					Status: "NACK",
-				},
-				Error: &errorObj,
-			},
-		}
-	}
-	return json.Marshal(response)
-}
-
-// Ack processes the incoming Beckn request, unmarshals the JSON body into a BecknRequest struct,
-// and returns a JSON-encoded acknowledgment response with a status of "ACK".
-// If the request body cannot be parsed, it returns an error.
-func Ack(ctx context.Context, body []byte) ([]byte, error) {
-	var req BecknRequest
-	if err := json.Unmarshal(body, &req); err != nil {
-		return nil, fmt.Errorf("failed to parse request: %w", err)
-	}
-	response := BecknResponse{
-		Context: req.Context,
-		Message: Message{
-			Ack: struct {
-				Status string `json:"status,omitempty"`
-			}{
-				Status: "ACK",
+// SendAck sends an acknowledgment response (ACK) to the client.
+func SendAck(w http.ResponseWriter) {
+	resp := &model.Response{
+		Message: model.Message{
+			Ack: model.Ack{
+				Status: model.StatusACK,
 			},
 		},
 	}
-	return json.Marshal(response)
+
+	data, _ := json.Marshal(resp) //should not fail here
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	_, err := w.Write(data)
+	if err != nil {
+		http.Error(w, "failed to write response", http.StatusInternalServerError)
+		return
+	}
 }
 
-// HandleClientFailure processes a client failure scenario by unmarshaling the provided
-// request body, determining the appropriate error response based on the given ErrorType,
-// and returning the serialized response. If the ErrorType is not found in the error map,
-// a default error is used.
-func HandleClientFailure(ctx context.Context, tp ErrorType, body []byte) ([]byte, error) {
-	var req BecknRequest
-	if err := json.Unmarshal(body, &req); err != nil {
-		return nil, fmt.Errorf("failed to parse request: %w", err)
+// nack sends a negative acknowledgment (NACK) response with an error message.
+func nack(ctx context.Context, w http.ResponseWriter, err *model.Error, status int) {
+	resp := &model.Response{
+		Message: model.Message{
+			Ack: model.Ack{
+				Status: model.StatusNACK,
+			},
+			Error: err,
+		},
 	}
-	errorObj, ok := errorMap[tp]
-	var response ClientFailureBecknResponse
-	if !ok {
-		response = ClientFailureBecknResponse{
-			Context: req.Context,
-			Error:   &DefaultError,
-		}
-	} else {
-		response = ClientFailureBecknResponse{
-			Context: req.Context,
-			Error:   &errorObj,
-		}
+	data, _ := json.Marshal(resp) //should not fail here
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	_, er := w.Write(data)
+	if er != nil {
+		log.Debugf(ctx, "Error writing response: %v, MessageID: %s", er, ctx.Value(model.ContextKeyMsgID))
+		http.Error(w, fmt.Sprintf("Internal server error, MessageID: %s", ctx.Value(model.ContextKeyMsgID)), http.StatusInternalServerError)
+		return
+	}
+}
+
+// internalServerError generates an internal server error response.
+func internalServerError(ctx context.Context) *model.Error {
+	return &model.Error{
+		Code:    http.StatusText(http.StatusInternalServerError),
+		Message: fmt.Sprintf("Internal server error, MessageID: %s", ctx.Value(model.ContextKeyMsgID)),
+	}
+}
+
+// SendNack processes different types of errors and sends an appropriate NACK response.
+func SendNack(ctx context.Context, w http.ResponseWriter, err error) {
+	var schemaErr *model.SchemaValidationErr
+	var signErr *model.SignValidationErr
+	var badReqErr *model.BadReqErr
+	var notFoundErr *model.NotFoundErr
+
+	switch {
+	case errors.As(err, &schemaErr):
+		nack(ctx, w, schemaErr.BecknError(), http.StatusBadRequest)
+		return
+	case errors.As(err, &signErr):
+		nack(ctx, w, signErr.BecknError(), http.StatusUnauthorized)
+		return
+	case errors.As(err, &badReqErr):
+		nack(ctx, w, badReqErr.BecknError(), http.StatusBadRequest)
+		return
+	case errors.As(err, &notFoundErr):
+		nack(ctx, w, notFoundErr.BecknError(), http.StatusNotFound)
+		return
+	default:
+		nack(ctx, w, internalServerError(ctx), http.StatusInternalServerError)
+		return
 	}
-	return json.Marshal(response)
 }

pkg/response/response_test.go

@@ -0,0 +1,241 @@
+package response
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/beckn/beckn-onix/pkg/model"
+)
+
+type errorResponseWriter struct{}
+
+// TODO: Optimize the cases by removing these
+func (e *errorResponseWriter) Write([]byte) (int, error) {
+	return 0, errors.New("write error")
+}
+func (e *errorResponseWriter) WriteHeader(statusCode int) {}
+
+func (e *errorResponseWriter) Header() http.Header {
+	return http.Header{}
+}
+
+func TestSendAck(t *testing.T) {
+	_, err := http.NewRequest("GET", "/", nil)
+	if err != nil {
+		t.Fatal(err) // For tests
+	}
+	rr := httptest.NewRecorder()
+
+	SendAck(rr)
+
+	if rr.Code != http.StatusOK {
+		t.Errorf("wanted status code %d, got %d", http.StatusOK, rr.Code)
+	}
+
+	expected := `{"message":{"ack":{"status":"ACK"}}}`
+	if rr.Body.String() != expected {
+		t.Errorf("err.Error() = %s, want %s",
+			rr.Body.String(), expected)
+
+	}
+}
+
+func TestSendNack(t *testing.T) {
+	ctx := context.WithValue(context.Background(), model.ContextKeyMsgID, "123456")
+
+	tests := []struct {
+		name     string
+		err      error
+		expected string
+		status   int
+	}{
+		{
+			name: "SchemaValidationErr",
+			err: &model.SchemaValidationErr{
+				Errors: []model.Error{
+					{Paths: "/path1", Message: "Error 1"},
+					{Paths: "/path2", Message: "Error 2"},
+				},
+			},
+			status:   http.StatusBadRequest,
+			expected: `{"message":{"ack":{"status":"NACK"},"error":{"code":"Bad Request","paths":"/path1;/path2","message":"Error 1; Error 2"}}}`,
+		},
+		{
+			name:     "SignValidationErr",
+			err:      model.NewSignValidationErr(errors.New("signature invalid")),
+			status:   http.StatusUnauthorized,
+			expected: `{"message":{"ack":{"status":"NACK"},"error":{"code":"Unauthorized","message":"Signature Validation Error: signature invalid"}}}`,
+		},
+		{
+			name:     "BadReqErr",
+			err:      model.NewBadReqErr(errors.New("bad request error")),
+			status:   http.StatusBadRequest,
+			expected: `{"message":{"ack":{"status":"NACK"},"error":{"code":"Bad Request","message":"BAD Request: bad request error"}}}`,
+		},
+		{
+			name:     "NotFoundErr",
+			err:      model.NewNotFoundErr(errors.New("endpoint not found")),
+			status:   http.StatusNotFound,
+			expected: `{"message":{"ack":{"status":"NACK"},"error":{"code":"Not Found","message":"Endpoint not found: endpoint not found"}}}`,
+		},
+		{
+			name:     "InternalServerError",
+			err:      errors.New("unexpected error"),
+			status:   http.StatusInternalServerError,
+			expected: `{"message":{"ack":{"status":"NACK"},"error":{"code":"Internal Server Error","message":"Internal server error, MessageID: 123456"}}}`,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_, err := http.NewRequest("GET", "/", nil)
+			if err != nil {
+				t.Fatal(err) // For tests
+			}
+			rr := httptest.NewRecorder()
+
+			SendNack(ctx, rr, tt.err)
+
+			if rr.Code != tt.status {
+				t.Errorf("wanted status code %d, got %d", tt.status, rr.Code)
+			}
+
+			var actual map[string]interface{}
+			err = json.Unmarshal(rr.Body.Bytes(), &actual)
+			if err != nil {
+				t.Fatalf("failed to unmarshal response: %v", err)
+			}
+
+			var expected map[string]interface{}
+			err = json.Unmarshal([]byte(tt.expected), &expected)
+			if err != nil {
+				t.Fatalf("failed to unmarshal expected response: %v", err)
+			}
+
+			if !compareJSON(expected, actual) {
+				t.Errorf("err.Error() = %s, want %s",
+					actual, expected)
+			}
+
+		})
+	}
+}
+
+func compareJSON(expected, actual map[string]interface{}) bool {
+	expectedBytes, _ := json.Marshal(expected)
+	actualBytes, _ := json.Marshal(actual)
+	return bytes.Equal(expectedBytes, actualBytes)
+}
+
+func TestSendAck_WriteError(t *testing.T) {
+	w := &errorResponseWriter{}
+	SendAck(w)
+}
+
+// Mock struct to force JSON marshalling error
+type badMessage struct{}
+
+func (b *badMessage) MarshalJSON() ([]byte, error) {
+	return nil, errors.New("marshal error")
+}
+
+func TestNack_1(t *testing.T) {
+	tests := []struct {
+		name        string
+		err         *model.Error
+		status      int
+		expected    string
+		useBadJSON  bool
+		useBadWrite bool
+	}{
+		{
+			name: "Schema Validation Error",
+			err: &model.Error{
+				Code:    "BAD_REQUEST",
+				Paths:   "/test/path",
+				Message: "Invalid schema",
+			},
+			status:   http.StatusBadRequest,
+			expected: `{"message":{"ack":{"status":"NACK"},"error":{"code":"BAD_REQUEST","paths":"/test/path","message":"Invalid schema"}}}`,
+		},
+		{
+			name: "Internal Server Error",
+			err: &model.Error{
+				Code:    "INTERNAL_SERVER_ERROR",
+				Message: "Something went wrong",
+			},
+			status:   http.StatusInternalServerError,
+			expected: `{"message":{"ack":{"status":"NACK"},"error":{"code":"INTERNAL_SERVER_ERROR","message":"Something went wrong"}}}`,
+		},
+		{
+			name:       "JSON Marshal Error",
+			err:        nil, // This will be overridden to cause marshaling error
+			status:     http.StatusInternalServerError,
+			expected:   `Internal server error, MessageID: 12345`,
+			useBadJSON: true,
+		},
+		{
+			name: "Write Error",
+			err: &model.Error{
+				Code:    "WRITE_ERROR",
+				Message: "Failed to write response",
+			},
+			status:      http.StatusInternalServerError,
+			expected:    `Internal server error, MessageID: 12345`,
+			useBadWrite: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req, err := http.NewRequest("GET", "/", nil)
+			if err != nil {
+				t.Fatal(err)
+			}
+			ctx := context.WithValue(req.Context(), model.ContextKeyMsgID, "12345")
+
+			var w http.ResponseWriter
+			if tt.useBadWrite {
+				w = &errorResponseWriter{} // Simulate write error
+			} else {
+				w = httptest.NewRecorder()
+			}
+
+			// TODO: Fix this approach , should not be used like this.
+			if tt.useBadJSON {
+				data, _ := json.Marshal(&badMessage{})
+				w.Header().Set("Content-Type", "application/json")
+				w.WriteHeader(tt.status)
+				_, err := w.Write(data)
+				if err != nil {
+					http.Error(w, "Failed to write response", http.StatusInternalServerError)
+					return
+				}
+				return
+			}
+
+			nack(ctx, w, tt.err, tt.status)
+			if !tt.useBadWrite {
+				recorder, ok := w.(*httptest.ResponseRecorder)
+				if !ok {
+					t.Fatal("Failed to cast response recorder")
+				}
+
+				if recorder.Code != tt.status {
+					t.Errorf("wanted status code %d, got %d", tt.status, recorder.Code)
+				}
+
+				body := recorder.Body.String()
+				if body != tt.expected {
+					t.Errorf("err.Error() = %s, want %s",
+						body, tt.expected)
+				}
+			}
+		})
+	}
+}