| /** |
| * 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.redis.trident; |
| |
| import org.apache.storm.Config; |
| import org.apache.storm.StormSubmitter; |
| import org.apache.storm.generated.StormTopology; |
| import org.apache.storm.redis.common.config.JedisPoolConfig; |
| import org.apache.storm.redis.common.mapper.RedisDataTypeDescription; |
| import org.apache.storm.redis.trident.state.RedisMapState; |
| import org.apache.storm.trident.Stream; |
| import org.apache.storm.trident.TridentState; |
| import org.apache.storm.trident.TridentTopology; |
| import org.apache.storm.trident.operation.builtin.MapGet; |
| import org.apache.storm.trident.operation.builtin.Sum; |
| import org.apache.storm.trident.state.StateFactory; |
| import org.apache.storm.trident.testing.FixedBatchSpout; |
| import org.apache.storm.tuple.Fields; |
| import org.apache.storm.tuple.Values; |
| |
| public class WordCountTridentRedisMap { |
| |
| public static StormTopology buildTopology(String redisHost, Integer redisPort) { |
| Fields fields = new Fields("word", "count"); |
| FixedBatchSpout spout = new FixedBatchSpout(fields, 4, |
| new Values("storm", 1), |
| new Values("trident", 1), |
| new Values("needs", 1), |
| new Values("javadoc", 1) |
| ); |
| spout.setCycle(true); |
| |
| JedisPoolConfig poolConfig = new JedisPoolConfig.Builder() |
| .setHost(redisHost).setPort(redisPort) |
| .build(); |
| |
| RedisDataTypeDescription dataTypeDescription = new RedisDataTypeDescription( |
| RedisDataTypeDescription.RedisDataType.HASH, "test"); |
| StateFactory factory = RedisMapState.transactional(poolConfig, dataTypeDescription); |
| |
| TridentTopology topology = new TridentTopology(); |
| Stream stream = topology.newStream("spout1", spout); |
| |
| TridentState state = stream.groupBy(new Fields("word")) |
| .persistentAggregate(factory, new Fields("count"), new Sum(), new Fields("sum")); |
| |
| stream.stateQuery(state, new Fields("word"), new MapGet(), new Fields("sum")) |
| .each(new Fields("word", "sum"), new PrintFunction(), new Fields()); |
| return topology.build(); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| if (args.length != 2) { |
| System.out.println("Usage: WordCountTrident redis-host redis-port"); |
| System.exit(1); |
| } |
| |
| String redisHost = args[0]; |
| Integer redisPort = Integer.valueOf(args[1]); |
| |
| Config conf = new Config(); |
| conf.setMaxSpoutPending(5); |
| conf.setNumWorkers(3); |
| StormSubmitter.submitTopology("test_wordCounter_for_redis", conf, buildTopology(redisHost, redisPort)); |
| } |
| |
| } |