From e2634281192af2a3757948b7b6e4ab8597f12db9 Mon Sep 17 00:00:00 2001
From: xujianhai666 <zero.xu@bytedance.com>
Date: Tue, 6 Aug 2019 23:06:42 +0800
Subject: [PATCH] add broadcast cluster
---
cluster/cluster_impl/broadcast_cluster.go | 40 +++++++
.../cluster_impl/broadcast_cluster_invoker.go | 59 ++++++++++
.../broadcast_cluster_invoker_test.go | 109 ++++++++++++++++++
3 files changed, 208 insertions(+)
create mode 100644 cluster/cluster_impl/broadcast_cluster.go
create mode 100644 cluster/cluster_impl/broadcast_cluster_invoker.go
create mode 100644 cluster/cluster_impl/broadcast_cluster_invoker_test.go
diff --git a/cluster/cluster_impl/broadcast_cluster.go b/cluster/cluster_impl/broadcast_cluster.go
new file mode 100644
index 000000000..50aae3cfa
--- /dev/null
+++ b/cluster/cluster_impl/broadcast_cluster.go
@@ -0,0 +1,40 @@
+/*
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements. See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package cluster_impl
+
+import (
+ "github.com/apache/dubbo-go/cluster"
+ "github.com/apache/dubbo-go/common/extension"
+ "github.com/apache/dubbo-go/protocol"
+)
+
+type broadcastCluster struct{}
+
+const broadcast = "broadcast"
+
+func init() {
+ extension.SetCluster(broadcast, NewBroadcastCluster)
+}
+
+func NewBroadcastCluster() cluster.Cluster {
+ return &broadcastCluster{}
+}
+
+func (cluster *broadcastCluster) Join(directory cluster.Directory) protocol.Invoker {
+ return newBroadcastClusterInvoker(directory)
+}
diff --git a/cluster/cluster_impl/broadcast_cluster_invoker.go b/cluster/cluster_impl/broadcast_cluster_invoker.go
new file mode 100644
index 000000000..238df0acf
--- /dev/null
+++ b/cluster/cluster_impl/broadcast_cluster_invoker.go
@@ -0,0 +1,59 @@
+/*
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements. See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package cluster_impl
+
+import (
+ "github.com/apache/dubbo-go/cluster"
+ "github.com/apache/dubbo-go/common/logger"
+ "github.com/apache/dubbo-go/protocol"
+)
+
+type broadcastClusterInvoker struct {
+ baseClusterInvoker
+}
+
+func newBroadcastClusterInvoker(directory cluster.Directory) protocol.Invoker {
+ return &broadcastClusterInvoker{
+ baseClusterInvoker: newBaseClusterInvoker(directory),
+ }
+}
+
+func (invoker *broadcastClusterInvoker) Invoke(invocation protocol.Invocation) protocol.Result {
+ invokers := invoker.directory.List(invocation)
+ err := invoker.checkInvokers(invokers, invocation)
+ if err != nil {
+ return &protocol.RPCResult{Err: err}
+ }
+ err = invoker.checkWhetherDestroyed()
+ if err != nil {
+ return &protocol.RPCResult{Err: err}
+ }
+
+ var result protocol.Result
+ for _, ivk := range invokers {
+ result = ivk.Invoke(invocation)
+ if result.Error() != nil {
+ logger.Warnf("broadcast invoker invoke err: %v when use invoker: %v\n", result.Error(), ivk)
+ err = result.Error()
+ }
+ }
+ if err != nil {
+ return &protocol.RPCResult{Err: err}
+ }
+ return result
+}
diff --git a/cluster/cluster_impl/broadcast_cluster_invoker_test.go b/cluster/cluster_impl/broadcast_cluster_invoker_test.go
new file mode 100644
index 000000000..565684a8a
--- /dev/null
+++ b/cluster/cluster_impl/broadcast_cluster_invoker_test.go
@@ -0,0 +1,109 @@
+/*
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements. See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package cluster_impl
+
+import (
+ "context"
+ "errors"
+ "testing"
+)
+
+import (
+ "github.com/golang/mock/gomock"
+ "github.com/stretchr/testify/assert"
+)
+
+import (
+ "github.com/apache/dubbo-go/cluster/directory"
+ "github.com/apache/dubbo-go/cluster/loadbalance"
+ "github.com/apache/dubbo-go/common"
+ "github.com/apache/dubbo-go/common/extension"
+ "github.com/apache/dubbo-go/protocol"
+ "github.com/apache/dubbo-go/protocol/invocation"
+ "github.com/apache/dubbo-go/protocol/mock"
+)
+
+var (
+ broadcastUrl, _ = common.NewURL(context.TODO(), "dubbo://192.168.1.1:20000/com.ikurento.user.UserProvider")
+)
+
+func registerBroadcast(t *testing.T, mockInvokers ...*mock.MockInvoker) protocol.Invoker {
+ extension.SetLoadbalance("random", loadbalance.NewRandomLoadBalance)
+
+ invokers := []protocol.Invoker{}
+ for i, ivk := range mockInvokers {
+ invokers = append(invokers, ivk)
+ if i == 0 {
+ ivk.EXPECT().GetUrl().Return(broadcastUrl)
+ }
+ }
+ staticDir := directory.NewStaticDirectory(invokers)
+
+ broadcastCluster := NewBroadcastCluster()
+ clusterInvoker := broadcastCluster.Join(staticDir)
+ return clusterInvoker
+}
+
+func Test_BroadcastInvokeSuccess(t *testing.T) {
+ ctrl := gomock.NewController(t)
+ defer ctrl.Finish()
+
+ invokers := make([]*mock.MockInvoker, 0)
+
+ mockResult := &protocol.RPCResult{Rest: rest{tried: 0, success: true}}
+ for i := 0; i < 3; i++ {
+ invoker := mock.NewMockInvoker(ctrl)
+ invokers = append(invokers, invoker)
+ invoker.EXPECT().Invoke(gomock.Any()).Return(mockResult)
+ }
+
+ clusterInvoker := registerBroadcast(t, invokers...)
+
+ result := clusterInvoker.Invoke(&invocation.RPCInvocation{})
+ assert.Equal(t, mockResult, result)
+}
+
+func Test_BroadcastInvokeFailed(t *testing.T) {
+ ctrl := gomock.NewController(t)
+ defer ctrl.Finish()
+
+ invokers := make([]*mock.MockInvoker, 0)
+
+ mockResult := &protocol.RPCResult{Rest: rest{tried: 0, success: true}}
+ mockFailedResult := &protocol.RPCResult{Err: errors.New("just failed")}
+ for i := 0; i < 10; i++ {
+ invoker := mock.NewMockInvoker(ctrl)
+ invokers = append(invokers, invoker)
+ invoker.EXPECT().Invoke(gomock.Any()).Return(mockResult)
+ }
+ {
+ invoker := mock.NewMockInvoker(ctrl)
+ invokers = append(invokers, invoker)
+ invoker.EXPECT().Invoke(gomock.Any()).Return(mockFailedResult)
+ }
+ for i := 0; i < 10; i++ {
+ invoker := mock.NewMockInvoker(ctrl)
+ invokers = append(invokers, invoker)
+ invoker.EXPECT().Invoke(gomock.Any()).Return(mockResult)
+ }
+
+ clusterInvoker := registerBroadcast(t, invokers...)
+
+ result := clusterInvoker.Invoke(&invocation.RPCInvocation{})
+ assert.Equal(t, mockFailedResult.Err, result.Error())
+}
--
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