| /* |
| * 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.flink; |
| |
| import static org.hamcrest.CoreMatchers.allOf; |
| |
| import org.apache.beam.sdk.Pipeline; |
| import org.apache.beam.sdk.PipelineResult; |
| import org.apache.beam.sdk.io.GenerateSequence; |
| import org.apache.beam.sdk.options.PipelineOptions; |
| import org.apache.beam.sdk.options.PipelineOptionsFactory; |
| import org.apache.flink.client.program.OptimizerPlanEnvironment; |
| import org.apache.flink.client.program.PackagedProgram; |
| import org.apache.flink.client.program.ProgramInvocationException; |
| import org.apache.flink.configuration.Configuration; |
| import org.hamcrest.MatcherAssert; |
| import org.hamcrest.core.StringContains; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * Test for {@link FlinkRunner}. |
| * |
| * <p>This test is copied to 1.10 is becauses the signature of the method getPipeline in |
| * OptimizerPlanEnvironment has been changed in Flink 1.10, please refer to |
| * https://github.com/apache/flink/commit/0ea4dd7e9d56a017743ca6794d28537800faab6f for more details. |
| */ |
| public class FlinkRunnerTest { |
| |
| @Test |
| public void testEnsureStdoutStdErrIsRestored() throws Exception { |
| PackagedProgram packagedProgram = |
| PackagedProgram.newBuilder().setEntryPointClassName(getClass().getName()).build(); |
| // constructor changed between Flink 1.10.0 and 1.10.1 and will again change in 1.11 |
| OptimizerPlanEnvironment env = new OptimizerPlanEnvironment(new Configuration()); |
| try { |
| // Flink will throw an error because no job graph will be generated by the main method |
| env.getPipeline(packagedProgram, false); |
| Assert.fail("This should have failed to create the Flink Plan."); |
| } catch (ProgramInvocationException e) { |
| // Test that Flink wasn't able to intercept the stdout/stderr and we printed to the regular |
| // output instead |
| MatcherAssert.assertThat( |
| e.getMessage(), |
| allOf( |
| StringContains.containsString("System.out: (none)"), |
| StringContains.containsString("System.err: (none)"))); |
| } |
| } |
| |
| /** Main method for {@code testEnsureStdoutStdErrIsRestored()}. */ |
| public static void main(String[] args) { |
| FlinkPipelineOptions options = PipelineOptionsFactory.as(FlinkPipelineOptions.class); |
| options.setRunner(NotExecutingFlinkRunner.class); |
| Pipeline p = Pipeline.create(options); |
| p.apply(GenerateSequence.from(0)); |
| |
| // This will call Workarounds.restoreOriginalStdOutAndStdErr() through the constructor of |
| // FlinkRunner |
| p.run(); |
| } |
| |
| private static class NotExecutingFlinkRunner extends FlinkRunner { |
| |
| protected NotExecutingFlinkRunner(FlinkPipelineOptions options) { |
| // Stdout/Stderr is restored here |
| super(options); |
| } |
| |
| @SuppressWarnings("unused") |
| public static NotExecutingFlinkRunner fromOptions(PipelineOptions options) { |
| return new NotExecutingFlinkRunner(options.as(FlinkPipelineOptions.class)); |
| } |
| |
| @Override |
| public PipelineResult run(Pipeline pipeline) { |
| // Do not execute to test the stdout printing |
| return null; |
| } |
| } |
| } |