fix double init error

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

go.sum

@@ -37,6 +37,7 @@ github.com/google/uuid v1.1.5 h1:kxhtnfFVi+rYdOALN0B3k9UT86zVJKfBimRaciULW4I=
 github.com/google/uuid v1.1.5/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
+github.com/imdario/mergo v0.3.11 h1:3tnifQM4i+fbajXKBHXWEH+KvNHqojZ778UH75j3bGA=
 github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/json-iterator/go v1.1.10 h1:Kz6Cvnvv2wGdaG/V8yMvfkmNiXq9Ya2KUv4rouJJr68=
 github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
@@ -167,6 +168,7 @@ gopkg.in/ini.v1 v1.57.0 h1:9unxIsFcTt4I55uWluz+UmL95q4kdJ0buvQ1ZIqVQww=
 gopkg.in/ini.v1 v1.57.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

s3.go

@@ -25,6 +25,7 @@ type s3Store struct {
 	opts      store.Options
 	endpoint  string
 	mopts     *minio.Options
+	connected bool
 }
 
 func getBucket(ctx context.Context) string {
@@ -43,14 +44,17 @@ func NewStore(opts ...store.Option) store.Store {
 }
 
 func (s *s3Store) Connect(ctx context.Context) error {
-	if s.client == nil {
+	if s.connected {
+		return nil
+	}
+
 	client, err := minio.New(s.endpoint, s.mopts)
 	if err != nil {
 		return fmt.Errorf("Error connecting to store: %w", err)
 	}
 
 	s.client = client
-	}
+	s.connected = true
 
 	return nil
 }
@@ -65,7 +69,7 @@ func (s *s3Store) Init(opts ...store.Option) error {
 	}
 
 	var akey, skey string
-	var endpoint string
+	endpoint := s.endpoint
 
 	if s.opts.Context != nil {
 		if v, ok := s.opts.Context.Value(accessKey{}).(string); ok && v != "" {

s3_test.go

@@ -5,6 +5,8 @@ import (
 	"context"
 	"os"
 	"testing"
+
+	"github.com/unistack-org/micro/v3"
 )
 
 func TestStore(t *testing.T) {
@@ -24,16 +26,29 @@ func TestStore(t *testing.T) {
 		t.Fatal(err)
 	}
 
+	if err := s.Init(); err != nil {
+		t.Fatalf("double init test failed: %v", err)
+	}
+
 	if err := s.Connect(ctx); err != nil {
 		t.Fatal(err)
 	}
 
+	if err := s.Connect(ctx); err != nil {
+		t.Fatalf("double connect test failed: %v", err)
+	}
+
 	defer func() {
 		if err := s.Disconnect(ctx); err != nil {
 			t.Fatal(err)
 		}
 	}()
 
+	svc := micro.NewService(micro.Store(s))
+	if err := svc.Init(); err != nil {
+		t.Fatalf("service init failed: %v", err)
+	}
+
 	val := []byte("test")
 	key := "key"