Initial commit for Cache Plugin

go.mod

@@ -1,6 +1,8 @@
 module github.com/beckn/beckn-onix
 
-go 1.24
+go 1.23.0
+
+toolchain go1.23.4
 
 require (
 	github.com/kr/pretty v0.3.1 // indirect
@@ -25,6 +27,8 @@ require github.com/zenazn/pkcs7pad v0.0.0-20170308005700-253a5b1f0e03
 require golang.org/x/text v0.23.0 // indirect
 
 require (
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	golang.org/x/sys v0.31.0 // indirect
@@ -32,6 +36,7 @@ require (
 
 require (
 	github.com/hashicorp/go-retryablehttp v0.7.7
+	github.com/redis/go-redis/v9 v9.8.0
 	github.com/rs/zerolog v1.34.0
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1
 	gopkg.in/yaml.v2 v2.4.0

go.sum

@@ -1,7 +1,15 @@
+github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
+github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
+github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
+github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/dlclark/regexp2 v1.11.0 h1:G/nrcoOa7ZXlpoa/91N3X7mM3r8eIlMBBJZvsz/mxKI=
 github.com/dlclark/regexp2 v1.11.0/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
 github.com/fatih/color v1.16.0 h1:zmkK9Ngbjj+K0yRhTVONQh1p/HknKYSlNT+vZCzyokM=
@@ -30,6 +38,8 @@ github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsK
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/redis/go-redis/v9 v9.8.0 h1:q3nRvjrlge/6UD7eTu/DSg2uYiU2mCL0G/uzBWqhicI=
+github.com/redis/go-redis/v9 v9.8.0/go.mod h1:huWgSWd8mW6+m0VPhJjSSQ+d6Nh1VICQ6Q5lHuCH/Iw=
 github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
 github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=

pkg/plugin/implementation/cache/cache.go

@@ -0,0 +1,77 @@
+package cache
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+)
+
+type Config struct {
+	Addr string
+}
+
+type Cache struct {
+	client *redis.Client
+}
+
+var (
+	ErrEmptyConfig       = errors.New("empty config")
+	ErrAddrMissing       = errors.New("missing required field 'Addr'")
+	ErrCredentialMissing = errors.New("missing Redis credentials in environment")
+	ErrConnectionFail    = errors.New("failed to connect to Redis")
+)
+
+func validate(cfg *Config) error {
+	if cfg == nil {
+		return ErrEmptyConfig
+	}
+	if cfg.Addr == "" {
+		return ErrAddrMissing
+	}
+	return nil
+}
+
+func New(ctx context.Context, cfg *Config) (*Cache, func() error, error) {
+	if err := validate(cfg); err != nil {
+		return nil, nil, err
+	}
+
+	// Get password from environment variable
+	password := os.Getenv("REDIS_PASSWORD")
+	// Allow empty password for local testing
+	// if password == "" {
+	// 	return nil, nil, ErrCredentialMissing
+	// }
+
+	client := redis.NewClient(&redis.Options{
+		Addr:     cfg.Addr,
+		Password: password,
+		DB:       0, // Always use default DB 0
+	})
+
+	if _, err := client.Ping(ctx).Result(); err != nil {
+		return nil, nil, fmt.Errorf("%w: %v", ErrConnectionFail, err)
+	}
+
+	return &Cache{client: client}, client.Close, nil
+}
+
+func (c *Cache) Get(ctx context.Context, key string) (string, error) {
+	return c.client.Get(ctx, key).Result()
+}
+
+func (c *Cache) Set(ctx context.Context, key, value string, ttl time.Duration) error {
+	return c.client.Set(ctx, key, value, ttl).Err()
+}
+
+func (c *Cache) Delete(ctx context.Context, key string) error {
+	return c.client.Del(ctx, key).Err()
+}
+
+func (c *Cache) Clear(ctx context.Context) error {
+	return c.client.FlushDB(ctx).Err()
+}

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{}