Initial commit for Cache Plugin

pkg/plugin/implementation/cache/cmd/plugin.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"strconv"
+
+	"github.com/beckn/beckn-onix/pkg/plugin/definition"
+	"github.com/beckn/beckn-onix/pkg/plugin/implementation/cache"
+)
+
+// cacheProvider implements the definition.CacheProvider interface.
+type cacheProvider struct{}
+
+// Config holds the configuration settings for the Redis cache plugin.
+type Config struct {
+	Addr     string // Redis address (host:port)
+	DB       int    // Redis database number (optional, defaults to 0)
+	Password string // Redis password (optional, can be empty or from env)
+}
+
+// parseConfig converts the string map configuration to a Config struct.
+func parseConfig(config map[string]string) (*Config, error) {
+	addr, ok := config["addr"]
+	if !ok || addr == "" {
+		return nil, errors.New("config must contain 'addr'")
+	}
+
+	// Default values
+	db := 0
+	password := ""
+
+	// Parse DB if provided
+	if val, ok := config["db"]; ok && val != "" {
+		if parsedVal, err := strconv.Atoi(val); err == nil {
+			db = parsedVal
+		}
+	}
+
+	// Get password if provided
+	if val, ok := config["password"]; ok {
+		password = val
+	}
+
+	return &Config{
+		Addr:     addr,
+		DB:       db,
+		Password: password,
+	}, nil
+}
+
+// convertToRedisConfig converts the plugin Config to redis.Config.
+func convertToRedisConfig(cfg *Config) *cache.Config {
+	return &cache.Config{
+		Addr: cfg.Addr,
+	}
+}
+
+// New initializes a new Redis cache with the given configuration.
+func (p cacheProvider) New(ctx context.Context, config map[string]string) (definition.Cache, func() error, error) {
+	if ctx == nil {
+		return nil, nil, errors.New("context cannot be nil")
+	}
+
+	cfg, err := parseConfig(config)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// Convert to redis.Config
+	redisConfig := convertToRedisConfig(cfg)
+
+	return cache.New(ctx, redisConfig)
+}
+
+// Provider is the exported symbol that the plugin manager will look for.
+var Provider = cacheProvider{}