| /* |
| * 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.fnexecution.environment; |
| |
| import static org.hamcrest.Matchers.containsString; |
| import static org.hamcrest.Matchers.is; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertThat; |
| import static org.junit.Assert.fail; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.nio.charset.Charset; |
| import java.nio.file.Files; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link ProcessManager}. */ |
| @RunWith(JUnit4.class) |
| public class ProcessManagerTest { |
| |
| @Test |
| public void testRunSimpleCommand() throws IOException { |
| ProcessManager processManager = ProcessManager.create(); |
| processManager.startProcess("1", "bash", Collections.emptyList()); |
| processManager.stopProcess("1"); |
| processManager.startProcess("2", "bash", Arrays.asList("-c", "ls")); |
| processManager.stopProcess("2"); |
| processManager.startProcess("1", "bash", Arrays.asList("-c", "ls", "-l", "-a")); |
| processManager.stopProcess("1"); |
| } |
| |
| @Test |
| public void testRunInvalidExecutable() throws IOException { |
| ProcessManager processManager = ProcessManager.create(); |
| try { |
| processManager.startProcess("1", "asfasfls", Collections.emptyList()); |
| fail(); |
| } catch (IOException e) { |
| assertThat(e.getMessage(), containsString("Cannot run program \"asfasfls\"")); |
| } |
| } |
| |
| @Test |
| public void testDuplicateId() throws IOException { |
| ProcessManager processManager = ProcessManager.create(); |
| processManager.startProcess("1", "bash", Arrays.asList("-c", "ls")); |
| try { |
| processManager.startProcess("1", "bash", Arrays.asList("-c", "ls")); |
| fail(); |
| } catch (IllegalStateException e) { |
| // this is what we want |
| } finally { |
| processManager.stopProcess("1"); |
| } |
| } |
| |
| @Test |
| public void testLivenessCheck() throws IOException { |
| ProcessManager processManager = ProcessManager.create(); |
| ProcessManager.RunningProcess process = |
| processManager.startProcess("1", "bash", Arrays.asList("-c", "sleep", "1000")); |
| process.isAliveOrThrow(); |
| processManager.stopProcess("1"); |
| try { |
| process.isAliveOrThrow(); |
| fail(); |
| } catch (IllegalStateException e) { |
| // this is what we want |
| } |
| } |
| |
| @Test |
| public void testEnvironmentVariables() throws IOException, InterruptedException { |
| ProcessManager processManager = ProcessManager.create(); |
| ProcessManager.RunningProcess process = |
| processManager.startProcess( |
| "1", |
| "bash", |
| Arrays.asList("-c", "sleep $PARAM"), |
| Collections.singletonMap("PARAM", "-h")); |
| for (int i = 0; i < 10 && process.getUnderlyingProcess().isAlive(); i++) { |
| Thread.sleep(100); |
| } |
| assertThat(process.getUnderlyingProcess().exitValue(), is(1)); |
| processManager.stopProcess("1"); |
| } |
| |
| @Test |
| public void testRedirectOutput() throws IOException, InterruptedException { |
| File outputFile = File.createTempFile("beam-redirect-output-", ""); |
| outputFile.deleteOnExit(); |
| ProcessManager processManager = ProcessManager.create(); |
| ProcessManager.RunningProcess process = |
| processManager.startProcess( |
| "1", |
| "bash", |
| Arrays.asList("-c", "echo 'testing123'"), |
| Collections.emptyMap(), |
| outputFile); |
| for (int i = 0; i < 10 && process.getUnderlyingProcess().isAlive(); i++) { |
| Thread.sleep(100); |
| } |
| processManager.stopProcess("1"); |
| byte[] output = Files.readAllBytes(outputFile.toPath()); |
| assertNotNull(output); |
| String outputStr = new String(output, Charset.defaultCharset()); |
| assertThat(outputStr, containsString("testing123")); |
| } |
| |
| @Test |
| public void testInheritIO() throws IOException, InterruptedException { |
| final PrintStream oldOut = System.out; |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| PrintStream newOut = new PrintStream(baos); |
| try { |
| System.setOut(newOut); |
| ProcessManager processManager = ProcessManager.create(); |
| ProcessManager.RunningProcess process = |
| processManager.startProcess( |
| "1", |
| "bash", |
| Arrays.asList("-c", "echo 'testing123' 1>&2;"), |
| Collections.emptyMap(), |
| ProcessManager.INHERIT_IO_FILE); |
| for (int i = 0; i < 10 && process.getUnderlyingProcess().isAlive(); i++) { |
| Thread.sleep(100); |
| } |
| processManager.stopProcess("1"); |
| } finally { |
| System.setOut(oldOut); |
| } |
| // TODO: this doesn't work as inherit IO bypasses System.out/err |
| // the output instead appears in the console |
| // String outputStr = new String(baos.toByteArray(), Charset.defaultCharset()); |
| // assertThat(outputStr, containsString("testing123")); |
| assertFalse(ProcessManager.INHERIT_IO_FILE.exists()); |
| } |
| } |