/*
* 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 org.apache.flume.channel;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import junit.framework.Assert;
import org.apache.flume.Channel;
import org.apache.flume.ChannelSelector;
import org.apache.flume.Context;
import org.apache.flume.conf.Configurables;
import org.junit.Before;
import org.junit.Test;
public class TestReplicatingChannelSelector {
private List<Channel> channels = new ArrayList<Channel>();
private ChannelSelector selector;
@Before
public void setUp() throws Exception {
channels.clear();
channels.add(MockChannel.createMockChannel("ch1"));
channels.add(MockChannel.createMockChannel("ch2"));
channels.add(MockChannel.createMockChannel("ch3"));
channels.add(MockChannel.createMockChannel("ch4"));
selector = ChannelSelectorFactory.create(
channels, new HashMap<String, String>());
}
@Test
public void testReplicatingSelector() throws Exception {
selector.configure(new Context());
List<Channel> channels = selector.getRequiredChannels(new MockEvent());
Assert.assertNotNull(channels);
Assert.assertEquals(4, channels.size());
Assert.assertEquals("ch1", channels.get(0).getName());
Assert.assertEquals("ch2", channels.get(1).getName());
Assert.assertEquals("ch3", channels.get(2).getName());
Assert.assertEquals("ch4", channels.get(3).getName());
List<Channel> optCh = selector.getOptionalChannels(new MockEvent());
Assert.assertEquals(0, optCh.size());
}
@Test
public void testOptionalChannels() throws Exception {
Context context = new Context();
context.put(ReplicatingChannelSelector.CONFIG_OPTIONAL, "ch1");
Configurables.configure(selector, context);
List<Channel> channels = selector.getRequiredChannels(new MockEvent());
Assert.assertNotNull(channels);
Assert.assertEquals(3, channels.size());
Assert.assertEquals("ch2", channels.get(0).getName());
Assert.assertEquals("ch3", channels.get(1).getName());
Assert.assertEquals("ch4", channels.get(2).getName());
List<Channel> optCh = selector.getOptionalChannels(new MockEvent());
Assert.assertEquals(1, optCh.size());
Assert.assertEquals("ch1", optCh.get(0).getName());
}
@Test
public void testMultipleOptionalChannels() throws Exception {
Context context = new Context();
context.put(ReplicatingChannelSelector.CONFIG_OPTIONAL, "ch1 ch4");
Configurables.configure(selector, context);
List<Channel> channels = selector.getRequiredChannels(new MockEvent());
Assert.assertNotNull(channels);
Assert.assertEquals(2, channels.size());
Assert.assertEquals("ch2", channels.get(0).getName());
Assert.assertEquals("ch3", channels.get(1).getName());
List<Channel> optCh = selector.getOptionalChannels(new MockEvent());
Assert.assertEquals(2, optCh.size());
Assert.assertEquals("ch1", optCh.get(0).getName());
Assert.assertEquals("ch4", optCh.get(1).getName());
}
@Test
public void testMultipleOptionalChannelsSameChannelTwice() throws Exception {
Context context = new Context();
context.put(ReplicatingChannelSelector.CONFIG_OPTIONAL, "ch1 ch4 ch1");
Configurables.configure(selector, context);
List<Channel> channels = selector.getRequiredChannels(new MockEvent());
Assert.assertNotNull(channels);
Assert.assertEquals(2, channels.size());
Assert.assertEquals("ch2", channels.get(0).getName());
Assert.assertEquals("ch3", channels.get(1).getName());
List<Channel> optCh = selector.getOptionalChannels(new MockEvent());
Assert.assertEquals(2, optCh.size());
Assert.assertEquals("ch1", optCh.get(0).getName());
Assert.assertEquals("ch4", optCh.get(1).getName());
}
}