storm-client/src/jvm/org/apache/storm/testing/TestConfBolt.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.task.TopologyContext;
import org.apache.storm.topology.BasicOutputCollector;
import org.apache.storm.topology.OutputFieldsDeclarer;
import org.apache.storm.topology.base.BaseBasicBolt;
import org.apache.storm.tuple.Fields;
import org.apache.storm.tuple.Tuple;
import org.apache.storm.tuple.Values;


public class TestConfBolt extends BaseBasicBolt {
    Map<String, Object> componentConf;
    Map<String, Object> conf;

    public TestConfBolt() {
        this(null);
    }

    public TestConfBolt(Map<String, Object> componentConf) {
        this.componentConf = componentConf;
    }

    @Override
    public void prepare(Map<String, Object> conf, TopologyContext context) {
        this.conf = conf;
    }

    @Override
    public void declareOutputFields(OutputFieldsDeclarer declarer) {
        declarer.declare(new Fields("conf", "value"));
    }

    @Override
    public void execute(Tuple input, BasicOutputCollector collector) {
        String name = input.getString(0);
        collector.emit(new Values(name, conf.get(name)));
    }

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