| /* |
| * 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 loadbalance |
| |
| import ( |
| "fmt" |
| "strconv" |
| "testing" |
| ) |
| |
| import ( |
| "github.com/stretchr/testify/assert" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go/common" |
| "github.com/apache/dubbo-go/common/constant" |
| "github.com/apache/dubbo-go/protocol" |
| "github.com/apache/dubbo-go/protocol/invocation" |
| ) |
| |
| func TestRoundRobinSelect(t *testing.T) { |
| loadBalance := NewRoundRobinLoadBalance() |
| |
| var invokers []protocol.Invoker |
| |
| url, _ := common.NewURL(fmt.Sprintf("dubbo://%s:%d/org.apache.demo.HelloService", |
| constant.LOCAL_HOST_VALUE, constant.DEFAULT_PORT)) |
| invokers = append(invokers, protocol.NewBaseInvoker(url)) |
| i := loadBalance.Select(invokers, &invocation.RPCInvocation{}) |
| assert.True(t, i.GetUrl().URLEqual(url)) |
| |
| for i := 1; i < 10; i++ { |
| url, _ := common.NewURL(fmt.Sprintf("dubbo://192.168.1.%v:20000/org.apache.demo.HelloService", i)) |
| invokers = append(invokers, protocol.NewBaseInvoker(url)) |
| } |
| loadBalance.Select(invokers, &invocation.RPCInvocation{}) |
| } |
| |
| func TestRoundRobinByWeight(t *testing.T) { |
| loadBalance := NewRoundRobinLoadBalance() |
| |
| var invokers []protocol.Invoker |
| loop := 10 |
| for i := 1; i <= loop; i++ { |
| url, _ := common.NewURL(fmt.Sprintf("dubbo://192.168.1.%v:20000/org.apache.demo.HelloService?weight=%v", i, i)) |
| invokers = append(invokers, protocol.NewBaseInvoker(url)) |
| } |
| |
| loop = (1 + loop) * loop / 2 |
| selected := make(map[protocol.Invoker]int) |
| |
| for i := 1; i <= loop; i++ { |
| invoker := loadBalance.Select(invokers, &invocation.RPCInvocation{}) |
| selected[invoker]++ |
| } |
| |
| for _, i := range invokers { |
| w, _ := strconv.Atoi(i.GetUrl().GetParam("weight", "-1")) |
| assert.True(t, selected[i] == w) |
| } |
| } |