/**
* 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.node;
import java.io.File;
import java.util.List;
import junit.framework.Assert;
import org.apache.commons.io.FileUtils;
import org.apache.flume.lifecycle.LifecycleController;
import org.apache.flume.lifecycle.LifecycleState;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.google.common.collect.Lists;
import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;
import com.google.common.io.Files;
public class TestPollingPropertiesFileConfigurationProvider {
private static final File TESTFILE = new File(
TestPollingPropertiesFileConfigurationProvider.class.getClassLoader()
.getResource("flume-conf.properties").getFile());
private PollingPropertiesFileConfigurationProvider provider;
private File baseDir;
private File configFile;
private EventBus eventBus;
@Before
public void setUp() throws Exception {
baseDir = Files.createTempDir();
configFile = new File(baseDir, TESTFILE.getName());
Files.copy(TESTFILE, configFile);
eventBus = new EventBus("test");
provider =
new PollingPropertiesFileConfigurationProvider("host1",
configFile, eventBus, 1);
provider.start();
LifecycleController.waitForOneOf(provider, LifecycleState.START_OR_ERROR);
}
@After
public void tearDown() throws Exception {
FileUtils.deleteDirectory(baseDir);
provider.stop();
}
@Test
public void testPolling() throws Exception {
// let first event fire
Thread.sleep(2000L);
final List<MaterializedConfiguration> events = Lists.newArrayList();
Object eventHandler = new Object() {
@Subscribe
public synchronized void handleConfigurationEvent(MaterializedConfiguration event) {
events.add(event);
}
};
eventBus.register(eventHandler);
configFile.setLastModified(System.currentTimeMillis());
// now wait for second event to fire
Thread.sleep(2000L);
Assert.assertEquals(String.valueOf(events), 1, events.size());
MaterializedConfiguration materializedConfiguration = events.remove(0);
Assert.assertEquals(1, materializedConfiguration.getSourceRunners().size());
Assert.assertEquals(1, materializedConfiguration.getSinkRunners().size());
Assert.assertEquals(1, materializedConfiguration.getChannels().size());
}
}