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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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package org.apache.flume.serialization;
import com.google.common.base.Charsets;
import org.apache.avro.file.DataFileReader;
import org.apache.avro.generic.GenericData;
import org.apache.avro.generic.GenericDatumReader;
import org.apache.avro.generic.GenericRecord;
import org.apache.avro.io.DatumReader;
import org.apache.commons.io.FileUtils;
import org.apache.flume.Context;
import org.apache.flume.event.EventBuilder;
import org.junit.Assert;
import org.junit.Assume;
import org.junit.Test;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.charset.CharsetDecoder;
public class TestFlumeEventAvroEventSerializer {
private static final File TESTFILE =
new File("src/test/resources/FlumeEventAvroEvent.avro");
@Test
public void testAvroSerializer()
throws FileNotFoundException, IOException {
createAvroFile(TESTFILE, null);
validateAvroFile(TESTFILE);
FileUtils.forceDelete(TESTFILE);
}
@Test
public void testAvroSerializerNullCompression()
throws FileNotFoundException, IOException {
createAvroFile(TESTFILE, "null");
validateAvroFile(TESTFILE);
FileUtils.forceDelete(TESTFILE);
}
@Test
public void testAvroSerializerDeflateCompression()
throws FileNotFoundException, IOException {
createAvroFile(TESTFILE, "deflate");
validateAvroFile(TESTFILE);
FileUtils.forceDelete(TESTFILE);
}
@Test
public void testAvroSerializerSnappyCompression()
throws FileNotFoundException, IOException {
// Snappy currently broken on Mac in OpenJDK 7 per FLUME-2012
Assume.assumeTrue(!"Mac OS X".equals(System.getProperty("os.name")) ||
!System.getProperty("java.version").startsWith("1.7."));
createAvroFile(TESTFILE, "snappy");
validateAvroFile(TESTFILE);
FileUtils.forceDelete(TESTFILE);
}
public void createAvroFile(File file, String codec) throws FileNotFoundException, IOException {
if (file.exists()) {
FileUtils.forceDelete(file);
}
// serialize a few events using the reflection-based avro serializer
OutputStream out = new FileOutputStream(file);
Context ctx = new Context();
if (codec != null) {
ctx.put("compressionCodec", codec);
}
EventSerializer.Builder builder =
new FlumeEventAvroEventSerializer.Builder();
EventSerializer serializer = builder.build(ctx, out);
serializer.afterCreate();
serializer.write(EventBuilder.withBody("yo man!", Charsets.UTF_8));
serializer.write(EventBuilder.withBody("2nd event!", Charsets.UTF_8));
serializer.write(EventBuilder.withBody("last one!", Charsets.UTF_8));
serializer.flush();
serializer.beforeClose();
out.flush();
out.close();
}
public void validateAvroFile(File file) throws IOException {
// read the events back using GenericRecord
DatumReader<GenericRecord> reader = new GenericDatumReader<GenericRecord>();
DataFileReader<GenericRecord> fileReader =
new DataFileReader<GenericRecord>(file, reader);
GenericRecord record = new GenericData.Record(fileReader.getSchema());
int numEvents = 0;
while (fileReader.hasNext()) {
fileReader.next(record);
ByteBuffer body = (ByteBuffer) record.get("body");
CharsetDecoder decoder = Charsets.UTF_8.newDecoder();
String bodyStr = decoder.decode(body).toString();
System.out.println(bodyStr);
numEvents++;
}
fileReader.close();
Assert.assertEquals("Should have found a total of 3 events", 3, numEvents);
}
}