storm-client/src/jvm/org/apache/storm/testing/PythonShellMetricsBolt.java

/*
 * 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.testing;

import java.util.Map;
import org.apache.storm.metric.api.rpc.CountShellMetric;
import org.apache.storm.task.OutputCollector;
import org.apache.storm.task.ShellBolt;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.topology.IRichBolt;
import org.apache.storm.topology.OutputFieldsDeclarer;

public class PythonShellMetricsBolt extends ShellBolt implements IRichBolt {
    private static final long serialVersionUID = 1999209252187463355L;

    public PythonShellMetricsBolt(String[] args) {
        super(args);
    }

    public PythonShellMetricsBolt(String command, String file) {
        super(command, file);
    }

    @Override
    public void prepare(Map<String, Object> topoConf, TopologyContext context, OutputCollector collector) {
        super.prepare(topoConf, context, collector);

        CountShellMetric countShellMetric = new CountShellMetric();
        context.registerMetric("my-custom-shell-metric", countShellMetric, 5);
    }

    @Override
    public void declareOutputFields(OutputFieldsDeclarer declarer) {
    }

    @Override
    public Map<String, Object> getComponentConfiguration() {
        return null;
    }
}