hadoop CosNCopyFileTask 源码
haddop CosNCopyFileTask 代码
文件路径：/hadoop-cloud-storage-project/hadoop-cos/src/main/java/org/apache/hadoop/fs/cosn/CosNCopyFileTask.java
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.fs.cosn;
import java.io.IOException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Used by {@link CosNFileSystem} as an task that submitted
* to the thread pool to accelerate the copy progress.
* Each task is responsible for copying the source key to the destination.
*/
public class CosNCopyFileTask implements Runnable {
private static final Logger LOG =
LoggerFactory.getLogger(CosNCopyFileTask.class);
private NativeFileSystemStore store;
private String srcKey;
private String dstKey;
private CosNCopyFileContext cosCopyFileContext;
public CosNCopyFileTask(NativeFileSystemStore store, String srcKey,
String dstKey, CosNCopyFileContext cosCopyFileContext) {
this.store = store;
this.srcKey = srcKey;
this.dstKey = dstKey;
this.cosCopyFileContext = cosCopyFileContext;
}
@Override
public void run() {
boolean fail = false;
LOG.info(Thread.currentThread().getName() + "copying...");
try {
this.store.copy(srcKey, dstKey);
} catch (IOException e) {
LOG.warn("Exception thrown when copy from {} to {}, exception:{}",
this.srcKey, this.dstKey, e);
fail = true;
} finally {
this.cosCopyFileContext.lock();
if (fail) {
cosCopyFileContext.setCopySuccess(false);
}
cosCopyFileContext.incCopiesFinish();
cosCopyFileContext.signalAll();
this.cosCopyFileContext.unlock();
}
}
}
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