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[FLINK-2837][storm] various improvements for the compatibility layer
- refactor to use Storm's topology builder - remove FlinkTopologyBuilder - instantiate context-based StreamExecutionEnvironment (local or remote) - remove some of the Flink and Storm behavior replicating classes - modify FlinkTopology to parse Storm topology directly - replace StormTestBase with StreamingTestBase - add print example - FlinkTopologyBuilder changes (check if all inputs are available before processing) - correct package typo - two input support - add join example - update docs This closes #1398.
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88 changes: 88 additions & 0 deletions
88
...rib/flink-storm-examples/src/main/java/org/apache/flink/storm/join/SingleJoinExample.java
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|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| /** | ||
| * 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.flink.storm.join; | ||
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| import backtype.storm.Config; | ||
| import backtype.storm.testing.FeederSpout; | ||
| import backtype.storm.topology.TopologyBuilder; | ||
| import backtype.storm.tuple.Fields; | ||
| import backtype.storm.tuple.Values; | ||
| import backtype.storm.utils.Utils; | ||
| import org.apache.flink.storm.api.FlinkLocalCluster; | ||
| import org.apache.flink.storm.api.FlinkTopology; | ||
| import org.apache.flink.storm.util.BoltFileSink; | ||
| import org.apache.flink.storm.util.TupleOutputFormatter; | ||
| import storm.starter.bolt.PrinterBolt; | ||
| import storm.starter.bolt.SingleJoinBolt; | ||
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| public class SingleJoinExample { | ||
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| public static void main(String[] args) throws Exception { | ||
| final FeederSpout genderSpout = new FeederSpout(new Fields("id", "gender", "hobbies")); | ||
| final FeederSpout ageSpout = new FeederSpout(new Fields("id", "age")); | ||
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| TopologyBuilder builder = new TopologyBuilder(); | ||
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| builder.setSpout("gender", genderSpout); | ||
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| builder.setSpout("age", ageSpout); | ||
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| builder.setBolt("join", new SingleJoinBolt(new Fields("gender", "age"))) | ||
| .fieldsGrouping("gender", new Fields("id")) | ||
| .fieldsGrouping("age", new Fields("id")); | ||
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| // emit result | ||
| if (args.length > 0) { | ||
| // read the text file from given input path | ||
| builder.setBolt("fileOutput", new BoltFileSink(args[0], new TupleOutputFormatter())) | ||
| .shuffleGrouping("join"); | ||
| } else { | ||
| builder.setBolt("print", new PrinterBolt()).shuffleGrouping("join"); | ||
| } | ||
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| Config conf = new Config(); | ||
| conf.setDebug(true); | ||
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| String[] hobbies = new String[] {"reading", "biking", "travelling", "watching tv"}; | ||
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| for (int i = 0; i < 10; i++) { | ||
| String gender; | ||
| if (i % 2 == 0) { | ||
| gender = "male"; | ||
| } | ||
| else { | ||
| gender = "female"; | ||
| } | ||
| genderSpout.feed(new Values(i, gender, hobbies[i % hobbies.length])); | ||
| } | ||
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| for (int i = 9; i >= 0; i--) { | ||
| ageSpout.feed(new Values(i, i + 20)); | ||
| } | ||
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| final FlinkLocalCluster cluster = FlinkLocalCluster.getLocalCluster(); | ||
| cluster.submitTopology("joinTopology", conf, FlinkTopology.createTopology(builder)); | ||
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| Utils.sleep(10 * 1000); | ||
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| cluster.shutdown(); | ||
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| } | ||
| } |
61 changes: 61 additions & 0 deletions
61
...ib/flink-storm-examples/src/main/java/org/apache/flink/storm/print/PrintSampleStream.java
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|---|---|---|
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| /** | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.flink.storm.print; | ||
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| import backtype.storm.Config; | ||
| import backtype.storm.topology.TopologyBuilder; | ||
| import backtype.storm.utils.Utils; | ||
| import org.apache.flink.storm.api.FlinkLocalCluster; | ||
| import org.apache.flink.storm.api.FlinkTopology; | ||
| import storm.starter.bolt.PrinterBolt; | ||
| import storm.starter.spout.TwitterSampleSpout; | ||
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| import java.util.Arrays; | ||
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| /** | ||
| * Prints incoming tweets. Tweets can be filtered by keywords. | ||
| */ | ||
| public class PrintSampleStream { | ||
| public static void main(String[] args) throws Exception { | ||
| String consumerKey = args[0]; | ||
| String consumerSecret = args[1]; | ||
| String accessToken = args[2]; | ||
| String accessTokenSecret = args[3]; | ||
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| // keywords start with the 5th parameter | ||
| String[] keyWords = Arrays.copyOfRange(args, 4, args.length); | ||
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| TopologyBuilder builder = new TopologyBuilder(); | ||
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| builder.setSpout("twitter", new TwitterSampleSpout(consumerKey, consumerSecret, | ||
| accessToken, accessTokenSecret, keyWords)); | ||
| builder.setBolt("print", new PrinterBolt()) | ||
| .shuffleGrouping("twitter"); | ||
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| Config conf = new Config(); | ||
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| final FlinkLocalCluster cluster = FlinkLocalCluster.getLocalCluster(); | ||
| cluster.submitTopology("Print", conf, FlinkTopology.createTopology(builder)); | ||
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| Utils.sleep(10 * 1000); | ||
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| cluster.shutdown(); | ||
| } | ||
| } |
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