/*
* 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.logging.log4j.flume.appender;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.lang.management.ManagementFactory;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import java.util.zip.GZIPInputStream;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import org.apache.avro.AvroRemoteException;
import org.apache.avro.ipc.NettyServer;
import org.apache.avro.ipc.Responder;
import org.apache.avro.ipc.specific.SpecificResponder;
import org.apache.flume.Event;
import org.apache.flume.event.EventBuilder;
import org.apache.flume.source.avro.AvroFlumeEvent;
import org.apache.flume.source.avro.AvroSourceProtocol;
import org.apache.flume.source.avro.Status;
import org.apache.logging.log4j.EventLogger;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.config.ConfigurationFactory;
import org.apache.logging.log4j.message.StructuredDataMessage;
import org.apache.logging.log4j.status.StatusLogger;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import com.google.common.base.Preconditions;
/**
*
*/
public class FlumeEmbeddedAgentTest {
private static final String CONFIG = "default_embedded.xml";
private static final String HOSTNAME = "localhost";
private static LoggerContext ctx;
private EventCollector primary;
private EventCollector alternate;
@BeforeClass
public static void setupClass() {
// System.setProperty(DefaultConfiguration.DEFAULT_LEVEL, Level.DEBUG.toString());
final File file = new File("target/file-channel");
if (!deleteFiles(file)) {
System.err.println("Warning - unable to delete target/file-channel. Test errors may occur");
}
}
@AfterClass
public static void cleanupClass() {
StatusLogger.getLogger().reset();
}
@Before
public void setUp() throws Exception {
final File file = new File("target/file-channel");
final boolean result = deleteFiles(file);
/*
* Clear out all other appenders associated with this logger to ensure we're
* only hitting the Avro appender.
*/
final int[] ports = findFreePorts(2);
System.setProperty("primaryPort", Integer.toString(ports[0]));
System.setProperty("alternatePort", Integer.toString(ports[1]));
primary = new EventCollector(ports[0]);
alternate = new EventCollector(ports[1]);
System.setProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY, CONFIG);
ctx = (LoggerContext) LogManager.getContext(false);
ctx.reconfigure();
}
@After
public void teardown() throws Exception {
System.clearProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY);
ctx.reconfigure();
primary.stop();
alternate.stop();
final File file = new File("target/file-channel");
final boolean result = deleteFiles(file);
final MBeanServer server = ManagementFactory.getPlatformMBeanServer();
final Set<ObjectName> names = server.queryNames(new ObjectName("org.apache.flume.*:*"), null);
for (final ObjectName name : names) {
try {
server.unregisterMBean(name);
} catch (final Exception ex) {
System.out.println("Unable to unregister " + name.toString());
}
}
}
@Test
public void testLog4Event() throws InterruptedException, IOException {
final StructuredDataMessage msg = new StructuredDataMessage("Test", "Test Log4j", "Test");
EventLogger.logEvent(msg);
final Event event = primary.poll();
Assert.assertNotNull(event);
final String body = getBody(event);
Assert.assertTrue("Channel contained event, but not expected message. Received: " + body,
body.endsWith("Test Log4j"));
}
@Test
public void testMultiple() throws InterruptedException, IOException {
for (int i = 0; i < 10; ++i) {
final StructuredDataMessage msg = new StructuredDataMessage("Test", "Test Multiple " + i, "Test");
EventLogger.logEvent(msg);
}
for (int i = 0; i < 10; ++i) {
final Event event = primary.poll();
Assert.assertNotNull(event);
final String body = getBody(event);
final String expected = "Test Multiple " + i;
Assert.assertTrue("Channel contained event, but not expected message. Received: " + body,
body.endsWith(expected));
}
}
@Test
public void testFailover() throws InterruptedException, IOException {
final Logger logger = LogManager.getLogger("testFailover");
logger.debug("Starting testFailover");
for (int i = 0; i < 10; ++i) {
final StructuredDataMessage msg = new StructuredDataMessage("Test", "Test Primary " + i, "Test");
EventLogger.logEvent(msg);
}
for (int i = 0; i < 10; ++i) {
final Event event = primary.poll();
Assert.assertNotNull(event);
final String body = getBody(event);
final String expected = "Test Primary " + i;
Assert.assertTrue("Channel contained event, but not expected message. Received: " + body,
body.endsWith(expected));
}
// Give the AvroSink time to receive notification and notify the channel.
Thread.sleep(500);
primary.stop();
for (int i = 0; i < 10; ++i) {
final StructuredDataMessage msg = new StructuredDataMessage("Test", "Test Alternate " + i, "Test");
EventLogger.logEvent(msg);
}
for (int i = 0; i < 10; ++i) {
final Event event = alternate.poll();
Assert.assertNotNull(event);
final String body = getBody(event);
final String expected = "Test Alternate " + i;
/* When running in Gump Flume consistently returns the last event from the primary channel after
the failover, which fails this test */
Assert.assertTrue("Channel contained event, but not expected message. Expected: " + expected +
" Received: " + body, body.endsWith(expected));
}
}
private String getBody(final Event event) throws IOException {
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final InputStream is = new GZIPInputStream(new ByteArrayInputStream(event.getBody()));
int n = 0;
while (-1 != (n = is.read())) {
baos.write(n);
}
return new String(baos.toByteArray());
}
private static boolean deleteFiles(final File file) {
boolean result = true;
if (file.isDirectory()) {
final File[] files = file.listFiles();
for (final File child : files) {
result &= deleteFiles(child);
}
} else if (!file.exists()) {
return true;
}
return result &= file.delete();
}
private static class EventCollector implements AvroSourceProtocol {
private final LinkedBlockingQueue<AvroFlumeEvent> eventQueue = new LinkedBlockingQueue<AvroFlumeEvent>();
private final NettyServer nettyServer;
public EventCollector(final int port) {
final Responder responder = new SpecificResponder(AvroSourceProtocol.class, this);
nettyServer = new NettyServer(responder, new InetSocketAddress(HOSTNAME, port));
nettyServer.start();
}
public void stop() {
nettyServer.close();
}
public Event poll() {
AvroFlumeEvent avroEvent = null;
try {
avroEvent = eventQueue.poll(30000, TimeUnit.MILLISECONDS);
} catch (final InterruptedException ie) {
// Ignore the exception.
}
if (avroEvent != null) {
return EventBuilder.withBody(avroEvent.getBody().array(),
toStringMap(avroEvent.getHeaders()));
} else {
System.out.println("No Event returned");
}
return null;
}
@Override
public Status append(final AvroFlumeEvent event) throws AvroRemoteException {
eventQueue.add(event);
return Status.OK;
}
@Override
public Status appendBatch(final List<AvroFlumeEvent> events)
throws AvroRemoteException {
Preconditions.checkState(eventQueue.addAll(events));
return Status.OK;
}
}
private static Map<String, String> toStringMap(final Map<CharSequence, CharSequence> charSeqMap) {
final Map<String, String> stringMap = new HashMap<String, String>();
for (final Map.Entry<CharSequence, CharSequence> entry : charSeqMap.entrySet()) {
stringMap.put(entry.getKey().toString(), entry.getValue().toString());
}
return stringMap;
}
private static int[] findFreePorts(final int count) throws IOException {
final int[] ports = new int[count];
final ServerSocket[] sockets = new ServerSocket[count];
try {
for (int i = 0; i < count; ++i) {
sockets[i] = new ServerSocket(0);
ports[i] = sockets[i].getLocalPort();
}
} finally {
for (int i = 0; i < count; ++i) {
if (sockets[i] != null) {
try {
sockets[i].close();
} catch (final Exception ex) {
// Ignore the error.
}
}
}
}
return ports;
}
}