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/**
* 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.storm.topology;
import java.util.Map;
import java.util.logging.Logger;
import org.apache.heron.api.topology.IUpdatable;
import org.apache.storm.task.OutputCollector;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.tuple.Tuple;
public class BasicBoltExecutor implements IRichBolt, IUpdatable {
private static final Logger LOG = Logger.getLogger(BasicBoltExecutor.class.getName());
private static final long serialVersionUID = 235217339000923019L;
private IBasicBolt delegate;
private transient BasicOutputCollector collector;
public BasicBoltExecutor(IBasicBolt bolt) {
this.delegate = bolt;
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
delegate.declareOutputFields(declarer);
}
@Override
@SuppressWarnings("rawtypes")
public void prepare(Map stormConf,
TopologyContext context,
OutputCollector newCollector) {
delegate.prepare(stormConf, context);
this.collector = new BasicOutputCollector(newCollector);
}
@Override
public void execute(Tuple input) {
this.collector.setContext(input);
try {
delegate.execute(input, collector);
this.collector.getOutputter().ack(input);
} catch (FailedException e) {
if (e instanceof ReportedFailedException) {
this.collector.reportError(e);
}
this.collector.getOutputter().fail(input);
}
}
@Override
public void cleanup() {
delegate.cleanup();
}
@Override
public Map<String, Object> getComponentConfiguration() {
return delegate.getComponentConfiguration();
}
@Override
public void update(org.apache.heron.api.topology.TopologyContext topologyContext) {
if (delegate instanceof IUpdatable) {
((IUpdatable) delegate).update(topologyContext);
} else {
LOG.warning(String.format("Update() event received but can not call update() on delegate "
+ "because it does not implement %s: %s", IUpdatable.class.getName(), delegate));
}
}
}