/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed 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 eu.stratosphere.test.util;
import org.junit.Assert;
import org.junit.Test;
import eu.stratosphere.api.common.JobExecutionResult;
import eu.stratosphere.api.common.Plan;
import eu.stratosphere.api.java.ExecutionEnvironment;
import eu.stratosphere.client.minicluster.NepheleMiniCluster;
import eu.stratosphere.compiler.DataStatistics;
import eu.stratosphere.compiler.PactCompiler;
import eu.stratosphere.compiler.plan.OptimizedPlan;
import eu.stratosphere.compiler.plandump.PlanJSONDumpGenerator;
import eu.stratosphere.compiler.plantranslate.NepheleJobGraphGenerator;
import eu.stratosphere.configuration.Configuration;
import eu.stratosphere.nephele.client.JobClient;
import eu.stratosphere.nephele.jobgraph.JobGraph;
public abstract class JavaProgramTestBase extends AbstractTestBase {
private static final int DEFAULT_DEGREE_OF_PARALLELISM = 4;
private JobExecutionResult latestExecutionResult;
private int degreeOfParallelism = DEFAULT_DEGREE_OF_PARALLELISM;
public JavaProgramTestBase() {
this(new Configuration());
}
public JavaProgramTestBase(Configuration config) {
super(config);
}
public void setDegreeOfParallelism(int degreeOfParallelism) {
this.degreeOfParallelism = degreeOfParallelism;
}
public JobExecutionResult getLatestExecutionResult() {
return this.latestExecutionResult;
}
// --------------------------------------------------------------------------------------------
// Methods to create the test program and for pre- and post- test work
// --------------------------------------------------------------------------------------------
protected abstract void testProgram() throws Exception;
protected void preSubmit() throws Exception {}
protected void postSubmit() throws Exception {}
// --------------------------------------------------------------------------------------------
// Test entry point
// --------------------------------------------------------------------------------------------
@Test
public void testJob() throws Exception {
// pre-submit
try {
preSubmit();
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
Assert.fail("Pre-submit work caused an error: " + e.getMessage());
}
// prepare the test environment
TestEnvironment env = new TestEnvironment(this.executor, this.degreeOfParallelism);
env.setAsContext();
// call the test program
try {
testProgram();
this.latestExecutionResult = env.latestResult;
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
Assert.fail("Error while calling the test program: " + e.getMessage());
}
Assert.assertNotNull("The test program never triggered an execution.", this.latestExecutionResult);
// post-submit
try {
postSubmit();
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
Assert.fail("Post-submit work caused an error: " + e.getMessage());
}
}
protected ExecutionEnvironment getExecutionEnvironment() {
return new TestEnvironment(this.executor, this.degreeOfParallelism);
}
private static final class TestEnvironment extends ExecutionEnvironment {
private final NepheleMiniCluster executor;
private JobExecutionResult latestResult;
private TestEnvironment(NepheleMiniCluster executor, int degreeOfParallelism) {
this.executor = executor;
setDegreeOfParallelism(degreeOfParallelism);
}
@Override
public JobExecutionResult execute(String jobName) throws Exception {
try {
OptimizedPlan op = compileProgram(jobName);
NepheleJobGraphGenerator jgg = new NepheleJobGraphGenerator();
JobGraph jobGraph = jgg.compileJobGraph(op);
JobClient client = this.executor.getJobClient(jobGraph);
client.setConsoleStreamForReporting(AbstractTestBase.getNullPrintStream());
JobExecutionResult result = client.submitJobAndWait();
this.latestResult = result;
return result;
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
Assert.fail("Job execution failed!");
return null;
}
}
@Override
public String getExecutionPlan() throws Exception {
OptimizedPlan op = compileProgram("unused");
PlanJSONDumpGenerator jsonGen = new PlanJSONDumpGenerator();
return jsonGen.getOptimizerPlanAsJSON(op);
}
private OptimizedPlan compileProgram(String jobName) {
Plan p = createProgramPlan(jobName);
PactCompiler pc = new PactCompiler(new DataStatistics());
return pc.compile(p);
}
private void setAsContext() {
initializeContextEnvironment(this);
}
}
}