/**
* 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.core;
import java.io.IOException;
import java.util.Map;
import com.cloudera.flume.conf.Context;
import com.cloudera.flume.conf.FlumeBuilder;
import com.cloudera.flume.conf.FlumeSpecException;
import com.cloudera.flume.reporter.ReportEvent;
import com.cloudera.flume.reporter.Reportable;
/**
* This sink takes a data flow spec string as a constructor argument. It parses
* the construction and instantiates the sink. During execution, all the sink
* API calls are forwarded to the instantiated sink.
*
* Currently, there no builder method because this should only be used by
* sinks/decorators that need to embed sinks specs as arguments. In the future
* there may be due to different spec syntax.
*/
public class CompositeSink extends EventSink.Base {
final EventSink snk;
public CompositeSink(Context context, String spec) throws FlumeSpecException {
snk = FlumeBuilder.buildSink(context, spec);
if (snk == null) {
throw new FlumeSpecException(
"Illegal flume spec expression (sink/source/deco not found)");
}
}
@Override
public void open() throws IOException, InterruptedException {
snk.open();
}
@Override
public void close() throws IOException, InterruptedException {
snk.close();
}
@Override
public void append(Event e) throws IOException, InterruptedException {
snk.append(e);
super.append(e);
}
@Override
public String getName() {
return snk.getName();
}
@Override
public ReportEvent getMetrics() {
return snk.getMetrics();
}
@Override
public Map<String, Reportable> getSubMetrics() {
return snk.getSubMetrics();
}
@Deprecated
@Override
public void getReports(String namePrefix, Map<String, ReportEvent> reports) {
super.getReports(namePrefix, reports);
snk.getReports(namePrefix + getName() + ".", reports);
}
public EventSink getSink() {
return snk;
}
}