jstorm-core/src/main/java/com/alibaba/jstorm/batch/BatchTopologyBuilder.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 com.alibaba.jstorm.batch;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import backtype.storm.topology.BoltDeclarer;
import backtype.storm.topology.IBasicBolt;
import backtype.storm.topology.SpoutDeclarer;
import backtype.storm.topology.TopologyBuilder;

import com.alibaba.jstorm.batch.impl.BatchSpoutTrigger;
import com.alibaba.jstorm.batch.impl.CoordinatedBolt;
import com.alibaba.jstorm.batch.util.BatchDef;

public class BatchTopologyBuilder {
    private static final Logger LOG = LoggerFactory.getLogger(BatchTopologyBuilder.class);

    private TopologyBuilder topologyBuilder;

    private SpoutDeclarer spoutDeclarer;

    public BatchTopologyBuilder(String topologyName) {
        topologyBuilder = new TopologyBuilder();

        spoutDeclarer = topologyBuilder.setSpout(BatchDef.SPOUT_TRIGGER, new BatchSpoutTrigger(), 1);
    }

    public BoltDeclarer setSpout(String id, IBatchSpout spout, int paralel) {

        BoltDeclarer boltDeclarer = this.setBolt(id, (IBatchSpout) spout, paralel);
        boltDeclarer.allGrouping(BatchDef.SPOUT_TRIGGER, BatchDef.COMPUTING_STREAM_ID);

        return boltDeclarer;
    }

    public BoltDeclarer setBolt(String id, IBasicBolt bolt, int paralel) {
        CoordinatedBolt coordinatedBolt = new CoordinatedBolt(bolt);

        BoltDeclarer boltDeclarer = topologyBuilder.setBolt(id, coordinatedBolt, paralel);

        if (bolt instanceof IPrepareCommit) {
            boltDeclarer.allGrouping(BatchDef.SPOUT_TRIGGER, BatchDef.PREPARE_STREAM_ID);
        }

        if (bolt instanceof ICommitter) {
            boltDeclarer.allGrouping(BatchDef.SPOUT_TRIGGER, BatchDef.COMMIT_STREAM_ID);
            boltDeclarer.allGrouping(BatchDef.SPOUT_TRIGGER, BatchDef.REVERT_STREAM_ID);
        }

        if (bolt instanceof IPostCommit) {
            boltDeclarer.allGrouping(BatchDef.SPOUT_TRIGGER, BatchDef.POST_STREAM_ID);
        }

        return boltDeclarer;
    }

    public TopologyBuilder getTopologyBuilder() {
        return topologyBuilder;
    }

}