summaryrefslogtreecommitdiffstats
path: root/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/ThreadPoolWorkManager.java
diff options
context:
space:
mode:
Diffstat (limited to 'java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/ThreadPoolWorkManager.java')
-rw-r--r--java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/ThreadPoolWorkManager.java228
1 files changed, 0 insertions, 228 deletions
diff --git a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/ThreadPoolWorkManager.java b/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/ThreadPoolWorkManager.java
deleted file mode 100644
index e7728ca9a9..0000000000
--- a/java/sca/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/ThreadPoolWorkManager.java
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- * 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.tuscany.sca.core.work.impl;
-
-import java.util.Collection;
-import java.util.Map;
-import java.util.UUID;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.RejectedExecutionException;
-import java.util.concurrent.ThreadFactory;
-
-import org.apache.tuscany.sca.work.WorkSchedulerException;
-
-/**
- * A thread-pool based implementation for the JSR-237 work manager.
- * <p/>
- * <p/>
- * This implementation supports only local work.
- * <p/>
- * TODO Elaborate the implementation. </p>
- *
- * @version $Rev$ $Date$
- */
-public class ThreadPoolWorkManager {
-
- // Map of work items currently handled by the work manager
- private Map<WorkItem, WorkListener> workItems = new ConcurrentHashMap<WorkItem, WorkListener>();
-
- // Thread-pool
- private ExecutorService executor;
-
- /**
- * Initializes the thread-pool.
- *
- * @param threadPoolSize Thread-pool size. If the size <1, then a cached pool is created
- */
- public ThreadPoolWorkManager(int threadPoolSize) {
- ThreadFactory factory = new ThreadFactory() {
- public Thread newThread(Runnable r) {
- Thread thread = new Thread(r);
- thread.setDaemon(true);
- return thread;
- }
- };
- if (threadPoolSize <= 0) {
-
- // Creates a new Executor, use a custom ThreadFactory that
- // creates daemon threads.
- executor = Executors.newCachedThreadPool(factory);
- } else {
- executor = Executors.newFixedThreadPool(threadPoolSize);
- }
- }
-
- /**
- * Schedules a unit of work asynchronously.
- *
- * @param work Work that needs to be scheduled.
- * @return Work Work item representing the asynchronous work
- */
- public WorkItem schedule(Work work) throws IllegalArgumentException {
- return schedule(work, null);
- }
-
- /**
- * Schedules a unit of work asynchronously.
- *
- * @param work Work that needs to be scheduled.
- * @param workListener Work listener for callbacks.
- * @return Work Work item representing the asynchronous work
- */
- public WorkItem schedule(Work work, WorkListener workListener) throws IllegalArgumentException {
-
- WorkItem workItem = new WorkItem(UUID.randomUUID().toString(), work);
- if (workListener != null) {
- workItems.put(workItem, workListener);
- }
- workAccepted(workItem, work);
- if (scheduleWork(work, workItem)) {
- return workItem;
- } else {
- workItem.setStatus(WorkEvent.WORK_REJECTED);
- if (workListener != null) {
- workListener.workRejected(new WorkEvent(workItem));
- }
- throw new IllegalArgumentException("Unable to schedule work");
- }
- }
-
- /**
- * Wait for all the specified units of work to finish.
- *
- * @param works Units of the work that need to finish.
- * @param timeout Timeout for waiting for the units of work to finish.
- */
- public boolean waitForAll(Collection works, long timeout) {
- throw new UnsupportedOperationException("waitForAll not supported");
- }
-
- /**
- * Wait for any of the specified units of work to finish.
- *
- * @param works Units of the work that need to finish.
- * @param timeout Timeout for waiting for the units of work to finish.
- */
- public Collection waitForAny(Collection works, long timeout) {
- throw new UnsupportedOperationException("waitForAny not supported");
- }
-
- /**
- * Method provided for subclasses to indicate a work acceptance.
- *
- * @param workItem Work item representing the work that was accepted.
- * @param work Work that was accepted.
- */
- private void workAccepted(final WorkItem workItem, final Work work) {
- WorkListener listener = workItems.get(workItem);
- if (listener != null) {
- workItem.setStatus(WorkEvent.WORK_ACCEPTED);
- WorkEvent event = new WorkEvent(workItem);
- listener.workAccepted(event);
- }
- }
-
- /*
- * Method to indicate a work start.
- */
- private void workStarted(final WorkItem workItem, final Work work) {
- WorkListener listener = workItems.get(workItem);
- if (listener != null) {
- workItem.setStatus(WorkEvent.WORK_STARTED);
- WorkEvent event = new WorkEvent(workItem);
- listener.workStarted(event);
- }
- }
-
- /*
- * Method to indicate a work completion.
- */
- private void workCompleted(final WorkItem workItem, final Work work) {
- workCompleted(workItem, work, null);
- }
-
- /*
- * Method to indicate a work completion.
- */
- private void workCompleted(final WorkItem workItem, final Work work, final WorkSchedulerException exception) {
- WorkListener listener = workItems.get(workItem);
- if (listener != null) {
- workItem.setStatus(WorkEvent.WORK_COMPLETED);
- workItem.setResult(work);
- workItem.setException(exception);
- WorkEvent event = new WorkEvent(workItem);
- listener.workCompleted(event);
- workItems.remove(workItem);
- }
- }
-
- /*
- * Schedules the work using the ThreadPool.
- */
- private boolean scheduleWork(final Work work, final WorkItem workItem) {
- try {
- executor.execute(new DecoratingWork(workItem, work));
- return true;
- } catch (RejectedExecutionException ex) {
- return false;
- }
- }
-
- /*
- * Class that decorates the original worker so that it can get callbacks when work is done.
- */
- private final class DecoratingWork implements Runnable {
-
- // Work item for this work.
- private WorkItem workItem;
-
- // The original work.
- private Work decoratedWork;
-
- /*
- * Initializes the work item and underlying work.
- */
- private DecoratingWork(final WorkItem workItem, final Work decoratedWork) {
- this.workItem = workItem;
- this.decoratedWork = decoratedWork;
- }
-
- /*
- * Overrides the run method.
- */
- public void run() {
- workStarted(workItem, decoratedWork);
- try {
- decoratedWork.run();
- workCompleted(workItem, decoratedWork);
- } catch (Throwable th) {
- workCompleted(workItem, decoratedWork, new WorkSchedulerException(th.getMessage(), th));
- }
- }
-
- }
-
- public void destroy() {
- executor.shutdown();
- }
-
-}
-