using LazyConnect

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

event.go

@@ -0,0 +1,55 @@
+package redis
+
+import (
+	"context"
+	"errors"
+	"net"
+	"sync/atomic"
+
+	goredis "github.com/redis/go-redis/v9"
+)
+
+type eventHook struct {
+	connected *atomic.Bool
+}
+
+var _ goredis.Hook = (*eventHook)(nil)
+
+func newEventHook(connected *atomic.Bool) *eventHook {
+	return &eventHook{connected: connected}
+}
+
+func (h *eventHook) DialHook(hook goredis.DialHook) goredis.DialHook {
+	return func(ctx context.Context, network, addr string) (net.Conn, error) {
+		conn, err := hook(ctx, network, addr)
+		if err != nil && !isRedisError(err) {
+			h.connected.Store(false)
+		}
+		return conn, err
+	}
+}
+
+func (h *eventHook) ProcessHook(hook goredis.ProcessHook) goredis.ProcessHook {
+	return func(ctx context.Context, cmd goredis.Cmder) error {
+		err := hook(ctx, cmd)
+		if err != nil && !isRedisError(err) {
+			h.connected.Store(false)
+		}
+		return err
+	}
+}
+
+func (h *eventHook) ProcessPipelineHook(hook goredis.ProcessPipelineHook) goredis.ProcessPipelineHook {
+	return func(ctx context.Context, cmds []goredis.Cmder) error {
+		err := hook(ctx, cmds)
+		if err != nil && !isRedisError(err) {
+			h.connected.Store(false)
+		}
+		return err
+	}
+}
+
+func isRedisError(err error) bool {
+	var rerr goredis.Error
+	return errors.As(err, &rerr)
+}

go.mod

@@ -7,7 +7,7 @@ toolchain go1.22.4
 require (
 	github.com/redis/go-redis/extra/rediscmd/v9 v9.7.0
 	github.com/redis/go-redis/v9 v9.7.0
-	go.unistack.org/micro/v3 v3.10.105
+	go.unistack.org/micro/v3 v3.10.106
 )
 
 require (

go.sum

@@ -14,7 +14,7 @@ github.com/redis/go-redis/v9 v9.7.0 h1:HhLSs+B6O021gwzl+locl0zEDnyNkxMtf/Z3NNBMa
 github.com/redis/go-redis/v9 v9.7.0/go.mod h1:f6zhXITC7JUJIlPEiBOTXxJgPLdZcA93GewI7inzyWw=
 go.unistack.org/micro-proto/v3 v3.4.1 h1:UTjLSRz2YZuaHk9iSlVqqsA50JQNAEK2ZFboGqtEa9Q=
 go.unistack.org/micro-proto/v3 v3.4.1/go.mod h1:okx/cnOhzuCX0ggl/vToatbCupi0O44diiiLLsZ93Zo=
-go.unistack.org/micro/v3 v3.10.105 h1:JYNV0d+fnR7Hy8d4/sjr+25DbSNqq1Z7IPeDDdB+f1I=
-go.unistack.org/micro/v3 v3.10.105/go.mod h1:YzMldzHN9Ei+zy5t/Psu7RUWDZwUfrNYiStSQtTz90g=
+go.unistack.org/micro/v3 v3.10.106 h1:ya4+n58l4PImtrIKrJi1GgkUuJ1gmzLYa9WKYI1JFLs=
+go.unistack.org/micro/v3 v3.10.106/go.mod h1:YzMldzHN9Ei+zy5t/Psu7RUWDZwUfrNYiStSQtTz90g=
 google.golang.org/protobuf v1.35.2 h1:8Ar7bF+apOIoThw1EdZl0p1oWvMqTHmpA2fRTyZO8io=
 google.golang.org/protobuf v1.35.2/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=

redis.go

@@ -55,11 +55,10 @@ var (
 )
 
 type Store struct {
-	opts        store.Options
-	cli         goredis.UniversalClient
-	done        chan struct{}
-	pool        *pool.StringsPool
-	isConnected atomic.Int32
+	opts      store.Options
+	cli       goredis.UniversalClient
+	pool      *pool.StringsPool
+	connected *atomic.Bool
 }
 
 func (r *Store) Connect(ctx context.Context) error {
@@ -69,8 +68,12 @@ func (r *Store) Connect(ctx context.Context) error {
 	if r.opts.LazyConnect {
 		return nil
 	}
-	return r.connect(ctx)
-
+	if err := r.cli.Ping(ctx).Err(); err != nil {
+		setSpanError(ctx, err)
+		return err
+	}
+	r.connected.Store(true)
+	return nil
 }
 
 func (r *Store) Init(opts ...store.Option) error {
@@ -105,26 +108,21 @@ func (r *Store) ClusterClient() *goredis.ClusterClient {
 }
 
 func (r *Store) Disconnect(ctx context.Context) error {
-	var err error
-	select {
-	case <-r.done:
-		return err
-	default:
-		if r.cli != nil {
-			if err = r.cli.Close(); err != nil {
-				r.isConnected.Store(0)
-			}
-		}
-		close(r.done)
-		return err
+	if !r.connected.Load() {
+		return nil
 	}
+
+	if r.cli != nil {
+		if err := r.cli.Close(); err != nil {
+			return err
+		}
+	}
+
+	r.connected.Store(false)
+	return nil
 }
 
 func (r *Store) Exists(ctx context.Context, key string, opts ...store.ExistsOption) error {
-	if err := r.connect(ctx); err != nil {
-		return err
-	}
-
 	b := r.pool.Get()
 	defer r.pool.Put(b)
 	options := store.NewExistsOptions(opts...)
@@ -155,7 +153,7 @@ func (r *Store) Exists(ctx context.Context, key string, opts ...store.ExistsOpti
 		return store.ErrNotFound
 	} else if err == nil {
 		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
-	} else if err != nil {
+	} else {
 		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
 		return err
 	}
@@ -164,10 +162,6 @@ func (r *Store) Exists(ctx context.Context, key string, opts ...store.ExistsOpti
 }
 
 func (r *Store) Read(ctx context.Context, key string, val interface{}, opts ...store.ReadOption) error {
-	if err := r.connect(ctx); err != nil {
-		return err
-	}
-
 	b := r.pool.Get()
 	defer r.pool.Put(b)
 
@@ -219,10 +213,6 @@ func (r *Store) Read(ctx context.Context, key string, val interface{}, opts ...s
 }
 
 func (r *Store) MRead(ctx context.Context, keys []string, vals interface{}, opts ...store.ReadOption) error {
-	if err := r.connect(ctx); err != nil {
-		return err
-	}
-
 	options := store.NewReadOptions(opts...)
 
 	timeout := r.opts.Timeout
@@ -322,10 +312,6 @@ func (r *Store) MRead(ctx context.Context, keys []string, vals interface{}, opts
 }
 
 func (r *Store) MDelete(ctx context.Context, keys []string, opts ...store.DeleteOption) error {
-	if err := r.connect(ctx); err != nil {
-		return err
-	}
-
 	options := store.NewDeleteOptions(opts...)
 
 	timeout := r.opts.Timeout
@@ -381,10 +367,6 @@ func (r *Store) MDelete(ctx context.Context, keys []string, opts ...store.Delete
 }
 
 func (r *Store) Delete(ctx context.Context, key string, opts ...store.DeleteOption) error {
-	if err := r.connect(ctx); err != nil {
-		return err
-	}
-
 	b := r.pool.Get()
 	defer r.pool.Put(b)
 
@@ -423,10 +405,6 @@ func (r *Store) Delete(ctx context.Context, key string, opts ...store.DeleteOpti
 }
 
 func (r *Store) MWrite(ctx context.Context, keys []string, vals []interface{}, opts ...store.WriteOption) error {
-	if err := r.connect(ctx); err != nil {
-		return err
-	}
-
 	options := store.NewWriteOptions(opts...)
 
 	timeout := r.opts.Timeout
@@ -510,10 +488,6 @@ func (r *Store) MWrite(ctx context.Context, keys []string, vals []interface{}, o
 }
 
 func (r *Store) Write(ctx context.Context, key string, val interface{}, opts ...store.WriteOption) error {
-	if err := r.connect(ctx); err != nil {
-		return err
-	}
-
 	b := r.pool.Get()
 	defer r.pool.Put(b)
 
@@ -560,7 +534,7 @@ func (r *Store) Write(ctx context.Context, key string, val interface{}, opts ...
 		return store.ErrNotFound
 	} else if err == nil {
 		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
-	} else if err != nil {
+	} else {
 		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
 		return err
 	}
@@ -569,10 +543,6 @@ func (r *Store) Write(ctx context.Context, key string, val interface{}, opts ...
 }
 
 func (r *Store) List(ctx context.Context, opts ...store.ListOption) ([]string, error) {
-	if err := r.connect(ctx); err != nil {
-		return nil, err
-	}
-
 	b := r.pool.Get()
 	defer r.pool.Put(b)
 
@@ -659,7 +629,11 @@ func (r *Store) String() string {
 }
 
 func NewStore(opts ...store.Option) *Store {
-	return &Store{done: make(chan struct{}), opts: store.NewOptions(opts...)}
+	b := atomic.Bool{}
+	return &Store{
+		opts:      store.NewOptions(opts...),
+		connected: &b,
+	}
 }
 
 func (r *Store) configure() error {
@@ -750,6 +724,7 @@ func (r *Store) configure() error {
 
 	r.cli = goredis.NewUniversalClient(universalOptions)
 	setTracing(r.cli, r.opts.Tracer)
+	r.cli.AddHook(newEventHook(r.connected))
 
 	r.pool = pool.NewStringsPool(50)
 
@@ -769,14 +744,3 @@ func (r *Store) getKey(b *strings.Builder, mainNamespace string, opNamespace str
 	b.WriteString(key)
 	return b.String()
 }
-
-func (r *Store) connect(ctx context.Context) error {
-	if r.isConnected.Load() == 0 {
-		if err := r.cli.Ping(ctx).Err(); err != nil {
-			setSpanError(ctx, err)
-			return err
-		}
-	}
-	r.isConnected.Store(1)
-	return nil
-}

redis_test.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"os"
+	"sync/atomic"
 	"testing"
 	"time"
 
@@ -20,7 +21,7 @@ func TestKeepTTL(t *testing.T) {
 	}
 	r := NewStore(store.Addrs(os.Getenv("STORE_NODES")))
 
-	if err := r.Init(); err != nil {
+	if err := r.Init(store.LazyConnect(true)); err != nil {
 		t.Fatal(err)
 	}
 	if err := r.Connect(ctx); err != nil {
@@ -99,9 +100,11 @@ func Test_rkv_configure(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			b := atomic.Bool{}
 			rc := &Store{
-				opts: tt.fields.options,
-				cli:  tt.fields.Client,
+				opts:      tt.fields.options,
+				cli:       tt.fields.Client,
+				connected: &b,
 			}
 			err := rc.configure()
 			if (err != nil) != tt.wantErr {

tracer.go

@@ -73,7 +73,7 @@ func (h *tracingHook) ProcessHook(hook goredis.ProcessHook) goredis.ProcessHook
 		case "cluster slots":
 			break
 		default:
-			_, span := h.tr.Start(ctx, "goredis.process", append(h.opts, tracer.WithSpanLabels("db.statement", cmdString))...)
+			_, span := h.tr.Start(ctx, "sdk.database", append(h.opts, tracer.WithSpanLabels("db.statement", cmdString))...)
 			defer func() {
 				recordError(span, err)
 				span.Finish()
@@ -95,7 +95,7 @@ func (h *tracingHook) ProcessPipelineHook(hook goredis.ProcessPipelineHook) gore
 			"db.statement", cmdsString,
 		))
 
-		_, span := h.tr.Start(ctx, "goredis.process_pipeline", opts...)
+		_, span := h.tr.Start(ctx, "sdk.database", opts...)
 		defer span.Finish()
 
 		err := hook(ctx, cmds)