add redis init status log (#1867)

Co-authored-by: Kent Dong <ch3cho@qq.com>

plugins/wasm-go/extensions/ai-cache/cache/provider.go

@@ -15,7 +15,7 @@ const (
 
 type providerInitializer interface {
 	ValidateConfig(ProviderConfig) error
-	CreateProvider(ProviderConfig) (Provider, error)
+	CreateProvider(ProviderConfig, wrapper.Log) (Provider, error)
 }
 
 var (
@@ -128,12 +128,12 @@ func (c *ProviderConfig) Validate() error {
 	return nil
 }
 
-func CreateProvider(pc ProviderConfig) (Provider, error) {
+func CreateProvider(pc ProviderConfig, log wrapper.Log) (Provider, error) {
 	initializer, has := providerInitializers[pc.typ]
 	if !has {
 		return nil, errors.New("unknown provider type: " + pc.typ)
 	}
-	return initializer.CreateProvider(pc)
+	return initializer.CreateProvider(pc, log)
 }
 
 type Provider interface {

plugins/wasm-go/extensions/ai-cache/cache/redis.go

@@ -16,13 +16,14 @@ func (r *redisProviderInitializer) ValidateConfig(cf ProviderConfig) error {
 	return nil
 }
 
-func (r *redisProviderInitializer) CreateProvider(cf ProviderConfig) (Provider, error) {
+func (r *redisProviderInitializer) CreateProvider(cf ProviderConfig, log wrapper.Log) (Provider, error) {
 	rp := redisProvider{
 		config: cf,
 		client: wrapper.NewRedisClusterClient(wrapper.FQDNCluster{
 			FQDN: cf.serviceName,
 			Host: cf.serviceHost,
 			Port: int64(cf.servicePort)}),
+		log: log,
 	}
 	err := rp.Init(cf.username, cf.password, cf.timeout)
 	return &rp, err
@@ -31,6 +32,7 @@ func (r *redisProviderInitializer) CreateProvider(cf ProviderConfig) (Provider,
 type redisProvider struct {
 	config ProviderConfig
 	client wrapper.RedisClient
+	log    wrapper.Log
 }
 
 func (rp *redisProvider) GetProviderType() string {
@@ -38,7 +40,13 @@ func (rp *redisProvider) GetProviderType() string {
 }
 
 func (rp *redisProvider) Init(username string, password string, timeout uint32) error {
-	return rp.client.Init(rp.config.username, rp.config.password, int64(rp.config.timeout), wrapper.WithDataBase(rp.config.database))
+	err := rp.client.Init(rp.config.username, rp.config.password, int64(rp.config.timeout), wrapper.WithDataBase(rp.config.database))
+	if rp.client.Ready() {
+		rp.log.Info("redis init successfully")
+	} else {
+		rp.log.Error("redis init failed, will try later")
+	}
+	return err
 }
 
 func (rp *redisProvider) Get(key string, cb wrapper.RedisResponseCallback) error {

plugins/wasm-go/extensions/ai-cache/config/config.go

@@ -154,7 +154,7 @@ func (c *PluginConfig) Complete(log wrapper.Log) error {
 	}
 	if c.cacheProviderConfig.GetProviderType() != "" {
 		log.Debugf("cache provider is set to %s", c.cacheProviderConfig.GetProviderType())
-		c.cacheProvider, err = cache.CreateProvider(*c.cacheProviderConfig)
+		c.cacheProvider, err = cache.CreateProvider(*c.cacheProviderConfig, log)
 		if err != nil {
 			return err
 		}

plugins/wasm-go/extensions/ai-token-ratelimit/config.go

@@ -82,7 +82,7 @@ type LimitConfigItem struct {
 	timeWindow int64               // 时间窗口大小
 }
 
-func initRedisClusterClient(json gjson.Result, config *ClusterKeyRateLimitConfig) error {
+func initRedisClusterClient(json gjson.Result, config *ClusterKeyRateLimitConfig, log wrapper.Log) error {
 	redisConfig := json.Get("redis")
 	if !redisConfig.Exists() {
 		return errors.New("missing redis in config")
@@ -111,7 +111,13 @@ func initRedisClusterClient(json gjson.Result, config *ClusterKeyRateLimitConfig
 		Port: int64(servicePort),
 	})
 	database := int(redisConfig.Get("database").Int())
-	return config.redisClient.Init(username, password, int64(timeout), wrapper.WithDataBase(database))
+	err := config.redisClient.Init(username, password, int64(timeout), wrapper.WithDataBase(database))
+	if config.redisClient.Ready() {
+		log.Info("redis init successfully")
+	} else {
+		log.Error("redis init failed, will try later")
+	}
+	return err
 }
 
 func parseClusterKeyRateLimitConfig(json gjson.Result, config *ClusterKeyRateLimitConfig) error {

plugins/wasm-go/extensions/ai-token-ratelimit/main.go

@@ -80,7 +80,7 @@ type LimitRedisContext struct {
 }
 
 func parseConfig(json gjson.Result, config *ClusterKeyRateLimitConfig, log wrapper.Log) error {
-	err := initRedisClusterClient(json, config)
+	err := initRedisClusterClient(json, config, log)
 	if err != nil {
 		return err
 	}

plugins/wasm-go/pkg/wrapper/redis_wrapper.go

@@ -30,6 +30,8 @@ type RedisResponseCallback func(response resp.Value)
 
 type RedisClient interface {
 	Init(username, password string, timeout int64, opts ...optionFunc) error
+	// return whether redis client is ready
+	Ready() bool
 	// with this function, you can call redis as if you are using redis-cli
 	Command(cmds []interface{}, callback RedisResponseCallback) error
 	Eval(script string, numkeys int, keys, args []interface{}, callback RedisResponseCallback) error
@@ -183,6 +185,10 @@ func respString(args []interface{}) []byte {
 	return buf.Bytes()
 }
 
+func (c *RedisClusterClient[C]) Ready() bool {
+	return c.ready
+}
+
 func (c *RedisClusterClient[C]) Init(username, password string, timeout int64, opts ...optionFunc) error {
 	for _, opt := range opts {
 		opt(&c.option)