| /** |
| * 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.elasticsearch.bolt; |
| |
| import java.util.Map; |
| import java.util.UUID; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.storm.Config; |
| import org.apache.storm.StormSubmitter; |
| import org.apache.storm.elasticsearch.common.EsConfig; |
| import org.apache.storm.elasticsearch.common.EsConstants; |
| import org.apache.storm.elasticsearch.common.EsTestUtil; |
| import org.apache.storm.elasticsearch.common.EsTupleMapper; |
| import org.apache.storm.generated.AlreadyAliveException; |
| import org.apache.storm.generated.AuthorizationException; |
| import org.apache.storm.generated.InvalidTopologyException; |
| import org.apache.storm.spout.SpoutOutputCollector; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.topology.OutputFieldsDeclarer; |
| import org.apache.storm.topology.TopologyBuilder; |
| import org.apache.storm.topology.base.BaseRichSpout; |
| import org.apache.storm.tuple.Fields; |
| import org.apache.storm.tuple.Values; |
| |
| /** |
| * Demonstrates an ElasticSearch Storm topology. |
| */ |
| public final class EsIndexTopology { |
| |
| /** |
| * The id of the used spout. |
| */ |
| private static final String SPOUT_ID = "spout"; |
| /** |
| * The id of the used bolt. |
| */ |
| private static final String BOLT_ID = "bolt"; |
| /** |
| * The name of the used topology. |
| */ |
| private static final String TOPOLOGY_NAME = "elasticsearch-test-topology1"; |
| /** |
| * The number of pending tuples triggering logging. |
| */ |
| private static final int PENDING_COUNT_MAX = 1000; |
| |
| /** |
| * The example's main method. |
| * @param args the command line arguments |
| * @throws AlreadyAliveException if the topology is already started |
| * @throws InvalidTopologyException if the topology is invalid |
| * @throws AuthorizationException if the topology authorization fails |
| */ |
| public static void main(final String[] args) throws AlreadyAliveException, |
| InvalidTopologyException, |
| AuthorizationException { |
| Config config = new Config(); |
| config.setNumWorkers(1); |
| TopologyBuilder builder = new TopologyBuilder(); |
| UserDataSpout spout = new UserDataSpout(); |
| builder.setSpout(SPOUT_ID, spout, 1); |
| EsTupleMapper tupleMapper = EsTestUtil.generateDefaultTupleMapper(); |
| EsConfig esConfig = new EsConfig("http://localhost:9300"); |
| builder.setBolt(BOLT_ID, new EsIndexBolt(esConfig, tupleMapper), 1) |
| .shuffleGrouping(SPOUT_ID); |
| |
| EsTestUtil.startEsNode(); |
| EsTestUtil.waitForSeconds(EsConstants.WAIT_DEFAULT_SECS); |
| StormSubmitter.submitTopology(TOPOLOGY_NAME, |
| config, |
| builder.createTopology()); |
| } |
| |
| /** |
| * The user data spout. |
| */ |
| public static class UserDataSpout extends BaseRichSpout { |
| private static final long serialVersionUID = 1L; |
| /** |
| * The pending values. |
| */ |
| private ConcurrentHashMap<UUID, Values> pending; |
| /** |
| * The collector passed in |
| * {@link #open(java.util.Map, org.apache.storm.task.TopologyContext, |
| * org.apache.storm.spout.SpoutOutputCollector) }. |
| */ |
| private SpoutOutputCollector collector; |
| private String[] sources = { |
| "{\"user\":\"user1\"}", |
| "{\"user\":\"user2\"}", |
| "{\"user\":\"user3\"}", |
| "{\"user\":\"user4\"}" |
| }; |
| private int index = 0; |
| private int count = 0; |
| private long total = 0L; |
| private String indexName = "index1"; |
| private String typeName = "type1"; |
| |
| /** |
| * Declares {@code source}, {@code index}, {@code type} and {@code id}. |
| * @param declarer the declarer to pass to |
| */ |
| @Override |
| public void declareOutputFields(final OutputFieldsDeclarer declarer) { |
| declarer.declare(new Fields("source", "index", "type", "id")); |
| } |
| |
| /** |
| * Acquires {@code collector} and initializes {@code pending}. |
| * @param config unused |
| * @param context unused |
| * @param collectorArg the collector to acquire |
| */ |
| @Override |
| public void open(final Map<String, Object> config, |
| final TopologyContext context, |
| final SpoutOutputCollector collectorArg) { |
| this.collector = collectorArg; |
| this.pending = new ConcurrentHashMap<>(); |
| } |
| |
| /** |
| * Makes the spout emit the next tuple, if any. |
| */ |
| @Override |
| public void nextTuple() { |
| String source = sources[index]; |
| UUID msgId = UUID.randomUUID(); |
| Values values = new Values(source, indexName, typeName, msgId); |
| this.pending.put(msgId, values); |
| this.collector.emit(values, msgId); |
| index++; |
| if (index >= sources.length) { |
| index = 0; |
| } |
| count++; |
| total++; |
| if (count > PENDING_COUNT_MAX) { |
| count = 0; |
| System.out.println("Pending count: " + this.pending.size() |
| + ", total: " + this.total); |
| } |
| Thread.yield(); |
| } |
| |
| /** |
| * Acknowledges the message with id {@code msgId}. |
| * @param msgId the message id |
| */ |
| @Override |
| public void ack(final Object msgId) { |
| this.pending.remove(msgId); |
| } |
| |
| /** |
| * Marks the message with id {@code msgId} as failed. |
| * @param msgId the message id |
| */ |
| @Override |
| public void fail(final Object msgId) { |
| System.out.println("**** RESENDING FAILED TUPLE"); |
| this.collector.emit(this.pending.get(msgId), msgId); |
| } |
| } |
| |
| /** |
| * Utility constructor to prevent initialization. |
| */ |
| private EsIndexTopology() { |
| } |
| } |