/**
* 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.debug;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.cloudera.flume.conf.Context;
import com.cloudera.flume.conf.SinkFactory.SinkDecoBuilder;
import com.cloudera.flume.core.Event;
import com.cloudera.flume.core.EventSink;
import com.cloudera.flume.core.EventSinkDecorator;
import com.google.common.base.Preconditions;
/**
* This is for throughput tests. Here we put a series of events into memory then
* them flush them when close is called.
*
* This is similar to MemorySinkSource in functionality but is easier to
* integrate with the initial single connector per process implementation.
*/
public class InMemoryDecorator<S extends EventSink> extends
EventSinkDecorator<S> {
List<Event> evts = new ArrayList<Event>();
public InMemoryDecorator(S s) {
super(s);
}
@Override
public void append(Event e) throws IOException {
evts.add(e);
}
public List<Event> getEvents() {
return Collections.unmodifiableList(evts);
}
@Override
public void close() throws IOException {
for (Event e : evts) {
getSink().append(e);
}
evts = null;
super.close();
}
public static SinkDecoBuilder builder() {
return new SinkDecoBuilder() {
@Override
public EventSinkDecorator<EventSink> build(Context context,
String... argv) {
Preconditions.checkArgument(argv.length == 0, "usage: inmem");
return new InMemoryDecorator<EventSink>(null);
}
};
}
}