/*
* Copyright 1999-2011 Alibaba Group.
*
* Licensed 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 com.alibaba.dubbo.rpc.cluster.support;
import com.alibaba.dubbo.common.Constants;
import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.rpc.Invocation;
import com.alibaba.dubbo.rpc.Invoker;
import com.alibaba.dubbo.rpc.Result;
import com.alibaba.dubbo.rpc.RpcResult;
import com.alibaba.dubbo.rpc.cluster.Directory;
import junit.framework.TestCase;
import org.easymock.EasyMock;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @author <a href="mailto:gang.lvg@alibaba-inc.com">kimi</a>
*/
public class MergeableClusterInvokerTest {
private Directory directory = EasyMock.createMock( Directory.class );
private Invoker firstInvoker = EasyMock.createMock( Invoker.class );
private Invoker secondInvoker = EasyMock.createMock( Invoker.class );
private Invocation invocation = EasyMock.createMock( Invocation.class );
private MergeableClusterInvoker<MenuService> mergeableClusterInvoker;
private String[] list1 = {"10", "11", "12"};
private String[] list2 = {"20", "21", "22"};
private String[] list3 = {"23", "24", "25"};
private String[] list4 = {"30", "31", "32"};
private Map<String, List<String>> firstMenuMap = new HashMap<String, List<String>>() {
{
put( "1", Arrays.asList(list1));
put( "2", Arrays.asList(list2));
}
};
private Map<String, List<String>> secondMenuMap = new HashMap<String, List<String>>() {
{
put( "2", Arrays.asList(list3));
put( "3", Arrays.asList(list4));
}
};
private Menu firstMenu = new Menu( firstMenuMap );
private Menu secondMenu = new Menu( secondMenuMap );
private URL url = URL.valueOf( new StringBuilder( 32 )
.append( "test://test/" )
.append( MenuService.class.getName() ).toString() );
@Before
public void setUp() throws Exception {
directory = EasyMock.createMock( Directory.class );
firstInvoker = EasyMock.createMock( Invoker.class );
secondInvoker = EasyMock.createMock( Invoker.class );
invocation = EasyMock.createMock( Invocation.class );
}
@Test
public void testGetMenuSuccessfully() throws Exception {
// setup
url = url.addParameter( Constants.MERGER_KEY, ".merge" );
EasyMock.expect( invocation.getMethodName() ).andReturn( "getMenu" ).anyTimes();
EasyMock.expect( invocation.getParameterTypes() ).andReturn( new Class<?>[]{ } ).anyTimes();
EasyMock.expect( invocation.getArguments() ).andReturn( new Object[]{ } ).anyTimes();
EasyMock.expect( invocation.getAttachments() ).andReturn( new HashMap<String, String>() )
.anyTimes();
EasyMock.expect( invocation.getInvoker() ).andReturn( firstInvoker ).anyTimes();
EasyMock.replay( invocation );
firstInvoker = (Invoker)Proxy.newProxyInstance(getClass().getClassLoader(), new Class<?>[]{Invoker.class}, new InvocationHandler() {
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if ("getUrl".equals(method.getName())) {
return url.addParameter(Constants.GROUP_KEY, "first");
}
if ("getInterface".equals(method.getName())) {
return MenuService.class;
}
if ("invoke".equals(method.getName())) {
return new RpcResult(firstMenu);
}
return null;
}
});
secondInvoker = (Invoker) Proxy.newProxyInstance(getClass().getClassLoader(), new Class<?>[]{Invoker.class}, new InvocationHandler() {
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if ("getUrl".equals(method.getName())) {
return url.addParameter(Constants.GROUP_KEY, "second");
}
if ("getInterface".equals(method.getName())) {
return MenuService.class;
}
if ("invoke".equals(method.getName())) {
return new RpcResult(secondMenu);
}
return null;
}
});
EasyMock.expect( directory.list( invocation ) ).andReturn( new ArrayList() {
{
add( firstInvoker );
add( secondInvoker );
}
} ).anyTimes();
EasyMock.expect( directory.getUrl() ).andReturn( url ).anyTimes();
EasyMock.expect( directory.getInterface() ).andReturn( MenuService.class ).anyTimes();
EasyMock.replay( directory );
mergeableClusterInvoker = new MergeableClusterInvoker<MenuService>( directory );
// invoke
Result result = mergeableClusterInvoker.invoke( invocation );
Assert.assertTrue( result.getValue() instanceof Menu );
Menu menu = ( Menu ) result.getValue();
Map<String, List<String>> expected = new HashMap<String, List<String>>();
merge( expected, firstMenuMap );
merge( expected, secondMenuMap );
TestCase.assertEquals(expected.keySet(), menu.getMenus().keySet());
for (String key : expected.keySet()) {
// FIXME: cannot guarantee the sequence of the merge result, check implementation in
// MergeableClusterInvoker#invoke
List<String> values1 = new ArrayList<String>(expected.get(key));
List<String> values2 = new ArrayList<String>(menu.getMenus().get(key));
Collections.sort(values1);
Collections.sort(values2);
TestCase.assertEquals(values1, values2);
}
}
@Test
public void testAddMenu() throws Exception {
String menu = "first";
List<String> menuItems = new ArrayList<String>(){
{
add( "1" );
add( "2" );
}
};
EasyMock.expect( invocation.getMethodName() ).andReturn( "addMenu" ).anyTimes();
EasyMock.expect( invocation.getParameterTypes() ).andReturn(
new Class<?>[]{ String.class, List.class } ).anyTimes();
EasyMock.expect( invocation.getArguments() ).andReturn( new Object[]{ menu, menuItems } )
.anyTimes();
EasyMock.expect( invocation.getAttachments() ).andReturn( new HashMap<String, String>() )
.anyTimes();
EasyMock.expect( invocation.getInvoker() ).andReturn( firstInvoker ).anyTimes();
EasyMock.replay( invocation );
EasyMock.expect( firstInvoker.getUrl() ).andReturn(
url.addParameter( Constants.GROUP_KEY, "first" ) ).anyTimes();
EasyMock.expect( firstInvoker.getInterface() ).andReturn( MenuService.class ).anyTimes();
EasyMock.expect( firstInvoker.invoke(invocation) ).andReturn( new RpcResult() )
.anyTimes();
EasyMock.expect(firstInvoker.isAvailable()).andReturn(true).anyTimes();
EasyMock.replay( firstInvoker );
EasyMock.expect( secondInvoker.getUrl() ).andReturn(
url.addParameter( Constants.GROUP_KEY, "second" ) ).anyTimes();
EasyMock.expect( secondInvoker.getInterface() ).andReturn( MenuService.class ).anyTimes();
EasyMock.expect( secondInvoker.invoke(invocation) ).andReturn(new RpcResult() )
.anyTimes();
EasyMock.expect(secondInvoker.isAvailable()).andReturn(true).anyTimes();
EasyMock.replay( secondInvoker );
EasyMock.expect( directory.list( invocation ) ).andReturn( new ArrayList() {
{
add( firstInvoker );
add( secondInvoker );
}
} ).anyTimes();
EasyMock.expect( directory.getUrl() ).andReturn( url ).anyTimes();
EasyMock.expect( directory.getInterface() ).andReturn( MenuService.class ).anyTimes();
EasyMock.replay( directory );
mergeableClusterInvoker = new MergeableClusterInvoker<MenuService>( directory );
Result result = mergeableClusterInvoker.invoke( invocation );
Assert.assertNull( result.getValue() );
}
static void merge( Map<String, List<String>> first, Map<String, List<String>> second ) {
for( Map.Entry<String, List<String>> entry : second.entrySet() ) {
List<String> value = first.get( entry.getKey() );
if ( value != null ) {
value.addAll( entry.getValue() );
} else {
first.put( entry.getKey(), new ArrayList<String>(entry.getValue()) );
}
}
}
}