| /* |
| * 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.beam.runners.apex.translation; |
| |
| import java.io.IOException; |
| import java.io.Serializable; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.NoSuchElementException; |
| import java.util.Set; |
| import javax.annotation.Nullable; |
| import org.apache.beam.runners.apex.ApexPipelineOptions; |
| import org.apache.beam.runners.apex.ApexRunner; |
| import org.apache.beam.runners.apex.ApexRunnerResult; |
| import org.apache.beam.sdk.Pipeline; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.coders.StringUtf8Coder; |
| import org.apache.beam.sdk.io.Read; |
| import org.apache.beam.sdk.io.UnboundedSource; |
| import org.apache.beam.sdk.options.PipelineOptions; |
| import org.apache.beam.sdk.options.PipelineOptionsFactory; |
| import org.apache.beam.sdk.transforms.Count; |
| import org.apache.beam.sdk.transforms.DoFn; |
| import org.apache.beam.sdk.transforms.ParDo; |
| import org.apache.beam.sdk.transforms.windowing.FixedWindows; |
| import org.apache.beam.sdk.transforms.windowing.TimestampCombiner; |
| import org.apache.beam.sdk.transforms.windowing.Window; |
| import org.apache.beam.sdk.values.KV; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Lists; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Sets; |
| import org.joda.time.Duration; |
| import org.joda.time.Instant; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** Integration test for {@link GroupByKeyTranslator}. */ |
| public class GroupByKeyTranslatorTest { |
| |
| @SuppressWarnings({"unchecked"}) |
| @Test |
| public void test() throws Exception { |
| ApexPipelineOptions options = PipelineOptionsFactory.as(ApexPipelineOptions.class); |
| options.setApplicationName("GroupByKey"); |
| options.setRunner(ApexRunner.class); |
| Pipeline p = Pipeline.create(options); |
| |
| List<KV<String, Instant>> data = |
| Lists.newArrayList( |
| KV.of("foo", new Instant(1000)), |
| KV.of("foo", new Instant(1000)), |
| KV.of("foo", new Instant(2000)), |
| KV.of("bar", new Instant(1000)), |
| KV.of("bar", new Instant(2000)), |
| KV.of("bar", new Instant(2000))); |
| |
| // expected results assume outputAtLatestInputTimestamp |
| List<KV<Instant, KV<String, Long>>> expected = |
| Lists.newArrayList( |
| KV.of(new Instant(1000), KV.of("foo", 2L)), |
| KV.of(new Instant(1000), KV.of("bar", 1L)), |
| KV.of(new Instant(2000), KV.of("foo", 1L)), |
| KV.of(new Instant(2000), KV.of("bar", 2L))); |
| |
| p.apply(Read.from(new TestSource(data, new Instant(5000)))) |
| .apply( |
| Window.<String>into(FixedWindows.of(Duration.standardSeconds(1))) |
| .withTimestampCombiner(TimestampCombiner.LATEST)) |
| .apply(Count.perElement()) |
| .apply(ParDo.of(new KeyedByTimestamp<>())) |
| .apply(ParDo.of(new EmbeddedCollector())); |
| |
| ApexRunnerResult result = (ApexRunnerResult) p.run(); |
| result.getApexDAG(); |
| |
| long timeout = System.currentTimeMillis() + 30000; |
| while (System.currentTimeMillis() < timeout) { |
| if (EmbeddedCollector.RESULTS.containsAll(expected)) { |
| break; |
| } |
| Thread.sleep(1000); |
| } |
| Assert.assertEquals(Sets.newHashSet(expected), EmbeddedCollector.RESULTS); |
| } |
| |
| private static class EmbeddedCollector extends DoFn<Object, Void> { |
| private static final Set<Object> RESULTS = Collections.synchronizedSet(new HashSet<>()); |
| |
| @ProcessElement |
| public void processElement(ProcessContext c) throws Exception { |
| RESULTS.add(c.element()); |
| } |
| } |
| |
| private static class KeyedByTimestamp<T> extends DoFn<T, KV<Instant, T>> { |
| @ProcessElement |
| public void processElement(ProcessContext c) throws Exception { |
| c.output(KV.of(c.timestamp(), c.element())); |
| } |
| } |
| |
| private static class TestSource extends UnboundedSource<String, UnboundedSource.CheckpointMark> { |
| |
| private final List<KV<String, Instant>> data; |
| private final Instant watermark; |
| |
| public TestSource(List<KV<String, Instant>> data, Instant watermark) { |
| this.data = data; |
| this.watermark = watermark; |
| } |
| |
| @Override |
| public List<? extends UnboundedSource<String, CheckpointMark>> split( |
| int desiredNumSplits, PipelineOptions options) throws Exception { |
| return Collections.<UnboundedSource<String, CheckpointMark>>singletonList(this); |
| } |
| |
| @Override |
| public UnboundedReader<String> createReader( |
| PipelineOptions options, @Nullable CheckpointMark checkpointMark) { |
| return new TestReader(data, watermark, this); |
| } |
| |
| @Nullable |
| @Override |
| public Coder<CheckpointMark> getCheckpointMarkCoder() { |
| return null; |
| } |
| |
| @Override |
| public Coder<String> getOutputCoder() { |
| return StringUtf8Coder.of(); |
| } |
| |
| private static class TestReader extends UnboundedReader<String> implements Serializable { |
| |
| private static final long serialVersionUID = 7526472295622776147L; |
| |
| private final List<KV<String, Instant>> data; |
| private final TestSource source; |
| |
| private Iterator<KV<String, Instant>> iterator; |
| private String currentRecord; |
| private Instant currentTimestamp; |
| private Instant watermark; |
| private boolean collected; |
| |
| public TestReader(List<KV<String, Instant>> data, Instant watermark, TestSource source) { |
| this.data = data; |
| this.source = source; |
| this.watermark = watermark; |
| } |
| |
| @Override |
| public boolean start() throws IOException { |
| iterator = data.iterator(); |
| return advance(); |
| } |
| |
| @Override |
| public boolean advance() throws IOException { |
| if (iterator.hasNext()) { |
| KV<String, Instant> kv = iterator.next(); |
| collected = false; |
| currentRecord = kv.getKey(); |
| currentTimestamp = kv.getValue(); |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public byte[] getCurrentRecordId() throws NoSuchElementException { |
| return new byte[0]; |
| } |
| |
| @Override |
| public String getCurrent() throws NoSuchElementException { |
| collected = true; |
| return this.currentRecord; |
| } |
| |
| @Override |
| public Instant getCurrentTimestamp() throws NoSuchElementException { |
| return currentTimestamp; |
| } |
| |
| @Override |
| public void close() throws IOException {} |
| |
| @Override |
| public Instant getWatermark() { |
| if (!iterator.hasNext() && collected) { |
| return watermark; |
| } else { |
| return new Instant(0); |
| } |
| } |
| |
| @Override |
| public CheckpointMark getCheckpointMark() { |
| return null; |
| } |
| |
| @Override |
| public UnboundedSource<String, ?> getCurrentSource() { |
| return this.source; |
| } |
| } |
| } |
| } |