| /* |
| * 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.dataflow.worker; |
| |
| import static org.hamcrest.Matchers.is; |
| import static org.hamcrest.Matchers.not; |
| import static org.hamcrest.Matchers.theInstance; |
| import static org.junit.Assert.assertThat; |
| import static org.junit.Assert.fail; |
| |
| import org.apache.beam.runners.dataflow.util.PropertyNames; |
| import org.apache.beam.sdk.transforms.DoFn; |
| import org.apache.beam.sdk.transforms.DoFnSchemaInformation; |
| import org.apache.beam.sdk.util.DoFnInfo; |
| import org.apache.beam.sdk.values.TupleTag; |
| import org.apache.beam.sdk.values.WindowingStrategy; |
| import org.hamcrest.Matchers; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.ExpectedException; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link DoFnInstanceManagers}. */ |
| @RunWith(JUnit4.class) |
| public class DoFnInstanceManagersTest { |
| @Rule public ExpectedException thrown = ExpectedException.none(); |
| |
| private static class TestFn extends DoFn<Object, Object> { |
| boolean tornDown = false; |
| |
| @ProcessElement |
| public void processElement(ProcessContext processContext) throws Exception {} |
| |
| @Teardown |
| public void teardown() throws Exception { |
| if (tornDown) { |
| fail("Should not be torn down twice"); |
| } |
| tornDown = true; |
| } |
| } |
| |
| private DoFn<?, ?> initialFn = new TestFn(); |
| |
| @Test |
| public void testInstanceReturnsInstance() throws Exception { |
| DoFnInfo<?, ?> info = |
| DoFnInfo.forFn( |
| initialFn, |
| WindowingStrategy.globalDefault(), |
| null /* side input views */, |
| null /* input coder */, |
| new TupleTag<>(PropertyNames.OUTPUT) /* main output id */, |
| DoFnSchemaInformation.create()); |
| |
| DoFnInstanceManager mgr = DoFnInstanceManagers.singleInstance(info); |
| assertThat(mgr.peek(), Matchers.<DoFnInfo<?, ?>>theInstance(info)); |
| assertThat(mgr.get(), Matchers.<DoFnInfo<?, ?>>theInstance(info)); |
| |
| // This call should be identical to the above, and return the same object |
| assertThat(mgr.get(), Matchers.<DoFnInfo<?, ?>>theInstance(info)); |
| // Peek should always return the same object |
| assertThat(mgr.peek(), Matchers.<DoFnInfo<?, ?>>theInstance(info)); |
| } |
| |
| @Test |
| public void testInstanceIgnoresAbort() throws Exception { |
| DoFnInfo<?, ?> info = |
| DoFnInfo.forFn( |
| initialFn, |
| WindowingStrategy.globalDefault(), |
| null /* side input views */, |
| null /* input coder */, |
| new TupleTag<>(PropertyNames.OUTPUT) /* main output id */, |
| DoFnSchemaInformation.create()); |
| |
| DoFnInstanceManager mgr = DoFnInstanceManagers.singleInstance(info); |
| mgr.abort(mgr.get()); |
| // TestFn#teardown would fail the test after multiple calls |
| mgr.abort(mgr.get()); |
| // The returned info is still the initial info |
| assertThat(mgr.get(), Matchers.<DoFnInfo<?, ?>>theInstance(info)); |
| assertThat(mgr.get().getDoFn(), theInstance(initialFn)); |
| } |
| |
| @Test |
| public void testCloningPoolReusesAfterComplete() throws Exception { |
| DoFnInfo<?, ?> info = |
| DoFnInfo.forFn( |
| initialFn, |
| WindowingStrategy.globalDefault(), |
| null /* side input views */, |
| null /* input coder */, |
| new TupleTag<>(PropertyNames.OUTPUT) /* main output id */, |
| DoFnSchemaInformation.create()); |
| |
| DoFnInstanceManager mgr = DoFnInstanceManagers.cloningPool(info); |
| DoFnInfo<?, ?> retrievedInfo = mgr.get(); |
| assertThat(retrievedInfo, not(Matchers.<DoFnInfo<?, ?>>theInstance(info))); |
| assertThat(retrievedInfo.getDoFn(), not(theInstance(info.getDoFn()))); |
| |
| mgr.complete(retrievedInfo); |
| DoFnInfo<?, ?> afterCompleteInfo = mgr.get(); |
| assertThat(afterCompleteInfo, Matchers.<DoFnInfo<?, ?>>theInstance(retrievedInfo)); |
| assertThat(afterCompleteInfo.getDoFn(), theInstance(retrievedInfo.getDoFn())); |
| } |
| |
| @Test |
| public void testCloningPoolTearsDownAfterAbort() throws Exception { |
| DoFnInfo<?, ?> info = |
| DoFnInfo.forFn( |
| initialFn, |
| WindowingStrategy.globalDefault(), |
| null /* side input views */, |
| null /* input coder */, |
| new TupleTag<>(PropertyNames.OUTPUT) /* main output id */, |
| DoFnSchemaInformation.create()); |
| |
| DoFnInstanceManager mgr = DoFnInstanceManagers.cloningPool(info); |
| DoFnInfo<?, ?> retrievedInfo = mgr.get(); |
| |
| mgr.abort(retrievedInfo); |
| TestFn fn = (TestFn) retrievedInfo.getDoFn(); |
| assertThat(fn.tornDown, is(true)); |
| |
| DoFnInfo<?, ?> afterAbortInfo = mgr.get(); |
| assertThat(afterAbortInfo, not(Matchers.<DoFnInfo<?, ?>>theInstance(retrievedInfo))); |
| assertThat(afterAbortInfo.getDoFn(), not(theInstance(retrievedInfo.getDoFn()))); |
| assertThat(((TestFn) afterAbortInfo.getDoFn()).tornDown, is(false)); |
| } |
| |
| @Test |
| public void testCloningPoolMultipleOutstanding() throws Exception { |
| DoFnInfo<?, ?> info = |
| DoFnInfo.forFn( |
| initialFn, |
| WindowingStrategy.globalDefault(), |
| null /* side input views */, |
| null /* input coder */, |
| new TupleTag<>(PropertyNames.OUTPUT) /* main output id */, |
| DoFnSchemaInformation.create()); |
| |
| DoFnInstanceManager mgr = DoFnInstanceManagers.cloningPool(info); |
| |
| DoFnInfo<?, ?> firstInfo = mgr.get(); |
| DoFnInfo<?, ?> secondInfo = mgr.get(); |
| |
| assertThat(firstInfo, not(Matchers.<DoFnInfo<?, ?>>theInstance(secondInfo))); |
| assertThat(firstInfo.getDoFn(), not(theInstance(secondInfo.getDoFn()))); |
| } |
| } |