Added sample plugin implementation for SCORE

pom.xml

@@ -494,6 +494,7 @@
  <module>nephele</module>
  <module>pact</module>
  <module>build-tools</module>
+ <module>score</module>
  <module>stratosphere-dist</module>
  </modules>
 </project>

score/pom.xml

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http:https://maven.apache.org/POM/4.0.0" xmlns:xsi="http:https://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http:https://maven.apache.org/POM/4.0.0 http:https://maven.apache.org/maven-v4_0_0.xsd">
+
+ <modelVersion>4.0.0</modelVersion>
+
+ <parent>
+ <artifactId>stratosphere</artifactId>
+ <groupId>eu.stratosphere</groupId>
+ <version>0.2</version>
+ </parent>
+
+ <groupId>eu.stratosphere</groupId>
+ <artifactId>score</artifactId>
+ <version>0.2</version>
+ <name>score</name>
+
+ <packaging>jar</packaging>
+
+ <dependencies>
+
+ <dependency>
+ <groupId>eu.stratosphere</groupId>
+ <artifactId>nephele-server</artifactId>
+ <version>${version}</version>
+ </dependency>
+
+ </dependencies>
+
+ <reporting>
+ <plugins>
+ </plugins>
+ </reporting>
+
+ <build>
+ <plugins>
+
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-surefire-plugin</artifactId>
+ <version>2.7</version>
+ <configuration>
+ <systemPropertyVariables>
+ <java.net.preferIPv4Stack>true</java.net.preferIPv4Stack>
+ <log.level>WARN</log.level>
+ </systemPropertyVariables>
+ <excludes>
+ <exclude>**/*TestBase*.class</exclude>
+ </excludes>
+ <forkMode>once</forkMode>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <artifactId>maven-failsafe-plugin</artifactId>
+ <version>2.7</version>
+ <configuration>
+ <systemPropertyVariables>
+ <log.level>WARN</log.level>
+ </systemPropertyVariables>
+ <forkMode>always</forkMode>
+ <threadCount>1</threadCount>
+ <perCoreThreadCount>false</perCoreThreadCount>
+ </configuration>
+ </plugin>
+
+ </plugins>
+ </build>
+</project>

score/src/main/java/eu/stratosphere/score/ScoreExecutionListener.java

@@ -0,0 +1,72 @@
+/***********************************************************************************************************************
+ *
+ * Copyright (C) 2010 by the Stratosphere project (http:https://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:https://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.score;
+
+import eu.stratosphere.nephele.execution.ExecutionListener;
+import eu.stratosphere.nephele.execution.ExecutionState;
+import eu.stratosphere.nephele.execution.ResourceUtilizationSnapshot;
+import eu.stratosphere.nephele.executiongraph.ExecutionVertex;
+import eu.stratosphere.nephele.executiongraph.ExecutionVertexID;
+import eu.stratosphere.nephele.jobgraph.JobID;
+
+public class ScoreExecutionListener implements ExecutionListener {
+
+ private final ExecutionVertex executionVertex;
+
+ ScoreExecutionListener(final ExecutionVertex executionVertex) {
+ this.executionVertex = executionVertex;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void executionStateChanged(final JobID jobID, final ExecutionVertexID vertexID,
+ final ExecutionState newExecutionState, final String optionalMessage) {
+
+ System.out.println("SCORE received execution state update for vertex " + this.executionVertex + ": "
+ + newExecutionState);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void userThreadStarted(final JobID jobID, final ExecutionVertexID vertexID, final Thread userThread) {
+ // TODO Auto-generated method stub
+
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void userThreadFinished(final JobID jobID, final ExecutionVertexID vertexID, final Thread userThread) {
+ // TODO Auto-generated method stub
+
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void initialExecutionResourcesExhausted(final JobID jobID, final ExecutionVertexID vertexID,
+ final ResourceUtilizationSnapshot resourceUtilizationSnapshot) {
+ // TODO Auto-generated method stub
+
+ }
+
+}

score/src/main/java/eu/stratosphere/score/ScoreJobManagerPlugin.java

@@ -0,0 +1,67 @@
+/***********************************************************************************************************************
+ *
+ * Copyright (C) 2010 by the Stratosphere project (http:https://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:https://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.score;
+
+import java.util.Iterator;
+
+import eu.stratosphere.nephele.executiongraph.ExecutionGraph;
+import eu.stratosphere.nephele.executiongraph.ExecutionGraphIterator;
+import eu.stratosphere.nephele.executiongraph.ExecutionVertex;
+import eu.stratosphere.nephele.jobgraph.JobGraph;
+import eu.stratosphere.nephele.plugins.JobManagerPlugin;
+
+public final class ScoreJobManagerPlugin implements JobManagerPlugin {
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public JobGraph rewriteJobGraph(final JobGraph jobGraph) {
+
+ // Nothing to do here
+
+ return jobGraph;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public ExecutionGraph rewriteExecutionGraph(final ExecutionGraph executionGraph) {
+
+ synchronized (executionGraph) {
+
+ // Register for events
+ final Iterator<ExecutionVertex> it = new ExecutionGraphIterator(executionGraph, true);
+
+ while (it.hasNext()) {
+ final ExecutionVertex vertex = it.next();
+ vertex.registerExecutionListener(new ScoreExecutionListener(vertex));
+ }
+ }
+
+ return executionGraph;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void shutdown() {
+ // TODO Auto-generated method stub
+
+ }
+}

score/src/main/java/eu/stratosphere/score/ScorePluginLoader.java

@@ -0,0 +1,65 @@
+/***********************************************************************************************************************
+ *
+ * Copyright (C) 2010 by the Stratosphere project (http:https://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:https://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.score;
+
+import eu.stratosphere.nephele.configuration.Configuration;
+import eu.stratosphere.nephele.plugins.AbstractPluginLoader;
+import eu.stratosphere.nephele.plugins.JobManagerPlugin;
+import eu.stratosphere.nephele.plugins.TaskManagerPlugin;
+
+/**
+ * A plugin loader for the SCORE (Stratosphere Continuous Re-optimization) module.
+ * <p>
+ * This class is thread-safe.
+ * 
+ * @author warneke
+ */
+public final class ScorePluginLoader extends AbstractPluginLoader {
+
+ private ScoreJobManagerPlugin jobManagerPlugin = null;
+
+ private ScoreTaskManagerPlugin taskManagerPlugin = null;
+
+ public ScorePluginLoader(final Configuration pluginConfiguration) {
+ super(pluginConfiguration);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public synchronized JobManagerPlugin getJobManagerPlugin() {
+
+ if (this.jobManagerPlugin == null) {
+ this.jobManagerPlugin = new ScoreJobManagerPlugin();
+ }
+
+ return this.jobManagerPlugin;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public synchronized TaskManagerPlugin getTaskManagerPlugin() {
+
+ if (this.taskManagerPlugin == null) {
+ this.taskManagerPlugin = new ScoreTaskManagerPlugin(getPluginConfiguration());
+ }
+
+ return this.taskManagerPlugin;
+ }
+}

score/src/main/java/eu/stratosphere/score/ScoreTaskManagerPlugin.java

@@ -0,0 +1,33 @@
+/***********************************************************************************************************************
+ *
+ * Copyright (C) 2010 by the Stratosphere project (http:https://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:https://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.score;
+
+import eu.stratosphere.nephele.configuration.Configuration;
+import eu.stratosphere.nephele.plugins.TaskManagerPlugin;
+
+public final class ScoreTaskManagerPlugin implements TaskManagerPlugin {
+
+ ScoreTaskManagerPlugin(final Configuration pluginConfiguration) {
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void shutdown() {
+ // TODO Auto-generated method stub
+ }
+}

stratosphere-dist/src/main/stratosphere-bin/conf/nephele-plugins.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- 
+#######################################################################################################################
+## 
+## Copyright (C) 2010 by the Stratosphere project (http:https://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:https://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.
+## 
+#######################################################################################################################
+-->
+<plugins>
+ <plugin>
+ <name>SCORE</name>
+ <class>eu.stratosphere.score.ScorePluginLoader</class>
+ <configuration>
+ <property>
+ <key>testkey</key>
+ <value>testvalue</value>
+ </property>
+ </configuration>
+ </plugin>
+</plugins>
+