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DualAsyncFSWALForTest.java
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DualAsyncFSWALForTest.java
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/**
* 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.hadoop.hbase.replication;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CountDownLatch;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.regionserver.wal.DualAsyncFSWAL;
import org.apache.hadoop.hbase.regionserver.wal.FailedLogCloseException;
import org.apache.hadoop.hbase.regionserver.wal.WALActionsListener;
import org.apache.hadoop.hbase.wal.WALProvider.AsyncWriter;
import org.apache.hbase.thirdparty.com.google.common.io.Closeables;
import org.apache.hbase.thirdparty.io.netty.channel.Channel;
import org.apache.hbase.thirdparty.io.netty.channel.EventLoopGroup;
class DualAsyncFSWALForTest extends DualAsyncFSWAL {
private boolean localBroken;
private boolean remoteBroken;
private CountDownLatch arrive;
private CountDownLatch resume;
private final class MyCombinedAsyncWriter implements AsyncWriter {
private final AsyncWriter localWriter;
private final AsyncWriter remoteWriter;
public MyCombinedAsyncWriter(AsyncWriter localWriter, AsyncWriter remoteWriter) {
this.localWriter = localWriter;
this.remoteWriter = remoteWriter;
}
@Override
public long getLength() {
return localWriter.getLength();
}
@Override
public long getSyncedLength() {
return this.localWriter.getSyncedLength();
}
@Override
public void close() throws IOException {
Closeables.close(localWriter, true);
Closeables.close(remoteWriter, true);
}
@Override
public CompletableFuture<Long> sync(boolean forceSync) {
CompletableFuture<Long> localFuture;
CompletableFuture<Long> remoteFuture;
if (!localBroken) {
localFuture = localWriter.sync(forceSync);
} else {
localFuture = new CompletableFuture<>();
localFuture.completeExceptionally(new IOException("Inject error"));
}
if (!remoteBroken) {
remoteFuture = remoteWriter.sync(forceSync);
} else {
remoteFuture = new CompletableFuture<>();
remoteFuture.completeExceptionally(new IOException("Inject error"));
}
return CompletableFuture.allOf(localFuture, remoteFuture).thenApply(v -> {
return localFuture.getNow(0L);
});
}
@Override
public void append(Entry entry) {
if (!localBroken) {
localWriter.append(entry);
}
if (!remoteBroken) {
remoteWriter.append(entry);
}
}
}
public DualAsyncFSWALForTest(FileSystem fs, FileSystem remoteFs, Path rootDir, Path remoteWALDir,
String logDir, String archiveDir, Configuration conf, List<WALActionsListener> listeners,
boolean failIfWALExists, String prefix, String suffix, EventLoopGroup eventLoopGroup,
Class<? extends Channel> channelClass) throws FailedLogCloseException, IOException {
super(fs, remoteFs, rootDir, remoteWALDir, logDir, archiveDir, conf, listeners, failIfWALExists,
prefix, suffix, eventLoopGroup, channelClass);
}
@Override
protected AsyncWriter createCombinedAsyncWriter(AsyncWriter localWriter,
AsyncWriter remoteWriter) {
return new MyCombinedAsyncWriter(localWriter, remoteWriter);
}
@Override
protected AsyncWriter createWriterInstance(Path path) throws IOException {
if (arrive != null) {
arrive.countDown();
try {
resume.await();
} catch (InterruptedException e) {
}
}
if (localBroken || remoteBroken) {
throw new IOException("WAL broken");
}
return super.createWriterInstance(path);
}
public void setLocalBroken() {
this.localBroken = true;
}
public void setRemoteBroken() {
this.remoteBroken = true;
}
public void suspendLogRoll() {
arrive = new CountDownLatch(1);
resume = new CountDownLatch(1);
}
public void waitUntilArrive() throws InterruptedException {
arrive.await();
}
public void resumeLogRoll() {
resume.countDown();
}
}