org.apache.flume.serialization.FlumeEventAvroEventSerializer Maven / Gradle / Ivy
/*
* 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.flume.serialization;
import org.apache.flume.serialization.AbstractAvroEventSerializer;
import java.io.OutputStream;
import org.apache.avro.Schema;
import org.apache.flume.Context;
import org.apache.flume.Event;
import org.apache.flume.serialization.EventSerializer;
public class FlumeEventAvroEventSerializer extends AbstractAvroEventSerializer {
private static final Schema SCHEMA = new Schema.Parser().parse(
"{ \"type\":\"record\", \"name\": \"Event\", \"fields\": [" +
" {\"name\": \"headers\", \"type\": { \"type\": \"map\", \"values\": \"string\" } }, " +
" {\"name\": \"body\", \"type\": \"bytes\" } ] }");
private final OutputStream out;
private FlumeEventAvroEventSerializer(OutputStream out) {
this.out = out;
}
@Override
protected Schema getSchema() {
return SCHEMA;
}
@Override
protected OutputStream getOutputStream() {
return out;
}
/**
* A no-op for this simple, special-case implementation
* @param event
* @return
*/
@Override
protected Event convert(Event event) {
return event;
}
public static class Builder implements EventSerializer.Builder {
@Override
public EventSerializer build(Context context, OutputStream out) {
FlumeEventAvroEventSerializer writer = new FlumeEventAvroEventSerializer(out);
writer.configure(context);
return writer;
}
}
}