/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. 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 com.cloudera.flume.handlers.seqfile;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import com.cloudera.flume.conf.FlumeConfiguration;
import com.cloudera.flume.conf.FlumeSpecException;
import com.cloudera.flume.core.Event;
import com.cloudera.flume.handlers.debug.MemorySinkSource;
import com.cloudera.flume.handlers.hdfs.WriteableEvent;
import com.cloudera.flume.handlers.hdfs.WriteableEventKey;
import com.cloudera.flume.handlers.text.FormatFactory;
import com.cloudera.flume.handlers.text.output.OutputFormat;
import com.cloudera.util.FileUtil;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.SequenceFile;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This test takes a small canned batch of events, writes them to a sequence
* file, and then reads them back checking the values.
*/
public class TestSequenceFileOutputFormat {
private static final Logger LOG = LoggerFactory
.getLogger(TestSequenceFileOutputFormat.class);
/**
* This is a helper method that is a lot like the above, except that it
* directly creates the output format so that we can configure it, since
* this isn't possible via the configuration language currently.
*/
public void sequenceFileWriteReadHelper(String... args) throws IOException,
FlumeSpecException, InterruptedException {
MemorySinkSource mem = MemorySinkSource.cannedData("test ", 5);
// setup sink.
File f = FileUtil.createTempFile("sequencefile", ".seq");
f.deleteOnExit();
FileOutputStream fos = new FileOutputStream(f);
LOG.info("filename before escaping: " + f.getAbsolutePath());
OutputFormat out = FormatFactory.get().getOutputFormat("seqfile", args);
mem.open();
Event e = mem.next();
while (e != null) {
out.format(fos, e);
e = mem.next();
}
mem.open();
FlumeConfiguration conf = FlumeConfiguration.get();
FileSystem fs = FileSystem.getLocal(conf);
SequenceFile.Reader r = new SequenceFile.Reader(fs, new Path(f.toURI()), conf);
WriteableEventKey k = new WriteableEventKey();
WriteableEvent evt = new WriteableEvent();
while (r.next(k, evt)) {
Event expected = mem.next();
assertEquals(evt.getTimestamp(), expected.getTimestamp());
assertEquals(evt.getNanos(), expected.getNanos());
assertEquals(evt.getPriority(), expected.getPriority());
assertTrue(Arrays.equals(evt.getBody(), expected.getBody()));
}
}
@Test
public void testSequenceFileFormatDefault() throws IOException,
FlumeSpecException, InterruptedException {
sequenceFileWriteReadHelper();
}
@Test
public void testSequenceFileFormatDeflateCodec() throws IOException,
FlumeSpecException, InterruptedException {
sequenceFileWriteReadHelper("BZip2Codec");
}
@Test(expected=IllegalArgumentException.class)
public void testSequenceFileFormatInvalidCodec() throws IOException,
FlumeSpecException, InterruptedException {
sequenceFileWriteReadHelper("invalid");
}
}