/**
* 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.hdfs.server.namenode;
import static org.junit.Assert.*;
import java.io.File;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.util.StringUtils;
import org.junit.Test;
import org.mockito.Mockito;
public class TestTransferFsImage {
private static final File TEST_DIR = new File(
System.getProperty("test.build.data","build/test/data"));
/**
* Regression test for HDFS-1997. Test that, if an exception
* occurs on the client side, it is properly reported as such,
* and reported to the associated NNStorage object.
*/
@Test
public void testClientSideException() throws IOException {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 0, true, null);
NNStorage mockStorage = Mockito.mock(NNStorage.class);
File[] localPath = new File[] {
new File("/xxxxx-does-not-exist/blah"),
};
try {
String fsName = NetUtils.toIpPort(cluster.getNameNode().getHttpAddress());
String id = "getimage=1&txid=-1";
TransferFsImage.getFileClient(fsName, id,
ImageSet.convertFilesToStreams(localPath, mockStorage, ""),
mockStorage, false);
fail("Didn't get an exception!");
} catch (IOException ioe) {
Mockito.verify(mockStorage).reportErrorOnFile(localPath[0]);
assertTrue(
"Unexpected exception: " + StringUtils.stringifyException(ioe),
ioe.getMessage().contains("Unable to download to any storage"));
} finally {
cluster.shutdown();
}
}
/**
* Similar to the above test, except that there are multiple local files
* and one of them can be saved.
*/
@Test
public void testClientSideExceptionOnJustOneDir() throws IOException {
Configuration conf = new Configuration();
MiniDFSCluster cluster = new MiniDFSCluster(conf, 0, true, null);
NNStorage mockStorage = Mockito.mock(NNStorage.class);
File[] localPaths = new File[] {
new File("/xxxxx-does-not-exist/blah"),
new File(TEST_DIR, "testfile")
};
try {
String fsName = NetUtils.toIpPort(cluster.getNameNode().getHttpAddress());
String id = "getimage=1&txid=-1";
TransferFsImage.getFileClient(fsName, id,
ImageSet.convertFilesToStreams(localPaths, mockStorage, ""),
mockStorage, false);
Mockito.verify(mockStorage).reportErrorOnFile(localPaths[0]);
assertTrue("The valid local file should get saved properly",
localPaths[1].length() > 0);
} finally {
cluster.shutdown();
}
}
}