package com.cloudera.flume.handlers.avro;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.avro.Schema;
import org.apache.avro.file.DataFileWriter;
import org.apache.avro.reflect.ReflectData;
import org.apache.avro.reflect.ReflectDatumWriter;
import com.cloudera.flume.core.Event;
import com.cloudera.flume.core.EventImpl;
import com.cloudera.flume.handlers.text.FormatFactory.OutputFormatBuilder;
import com.cloudera.flume.handlers.text.output.AbstractOutputFormat;
import com.cloudera.flume.handlers.text.output.OutputFormat;
import com.google.common.base.Preconditions;
private static final String formatName = "avro";
final static ReflectData reflectData = ReflectData.get();
final static Schema schema = reflectData.getSchema(EventImpl.class);
ReflectDatumWriter<EventImpl> dw = new ReflectDatumWriter<EventImpl>(schema);
OutputStream cachedOut = null;
DataFileWriter<EventImpl> enc = new DataFileWriter<EventImpl>(dw);
@Override
public void format(OutputStream o, Event e)
throws IOException {
if (cachedOut == null) {
enc.create(schema, o);
cachedOut = o;
}
if (cachedOut != o) {
enc.close();
enc.create(schema, o);
cachedOut = o;
}
EventImpl ei = null;
if (e instanceof EventImpl) {
ei = (EventImpl) e;
} else {
ei = new EventImpl(e);
}
enc.append(ei);
enc.flush();
}
public void close()
throws IOException {
enc.close();
}
public static OutputFormatBuilder
builder() {
return new OutputFormatBuilder() {
@Override
public OutputFormat
build(String... args) {
Preconditions.checkArgument(args.length == 0, "usage: avro");
OutputFormat format = new AvroNativeFileOutputFormat();
format.setBuilder(this);
return format;
}
@Override
return formatName;
}
};
}
}