diff options
Diffstat (limited to 'tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl')
6 files changed, 0 insertions, 767 deletions
diff --git a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/DefaultWorkScheduler.java b/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/DefaultWorkScheduler.java deleted file mode 100644 index 9e6f3b3087..0000000000 --- a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/DefaultWorkScheduler.java +++ /dev/null @@ -1,195 +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.security.AccessController; -import java.security.PrivilegedAction; - -import org.apache.tuscany.sca.core.LifeCycleListener; -import org.apache.tuscany.sca.work.NotificationListener; -import org.apache.tuscany.sca.work.WorkScheduler; -import org.apache.tuscany.sca.work.WorkSchedulerException; - -/** - * A work scheduler implementation based on a JSR 237 work manager. - * <p/> - * <p/> - * This needs a JSR 237 work manager implementation available for scheduling work. Instances can be configured with a - * work manager implementation that is injected in. It is the responsibility of the runtime environment to make a work - * manager implementation available. For example, if the managed environment supports work manager the runtime can use - * the appropriate lookup mechanism to inject the work manager implementation. </p> - * - * @version $Rev$ $Date$ - */ -public class DefaultWorkScheduler implements WorkScheduler, LifeCycleListener { - - /** - * Underlying JSR-237 work manager - */ - private ThreadPoolWorkManager jsr237WorkManager; - - /** - * Initializes the JSR 237 work manager. - * - * @param jsr237WorkManager JSR 237 work manager. - */ - public DefaultWorkScheduler() { - } - - private synchronized ThreadPoolWorkManager getWorkManager() { - if (jsr237WorkManager != null) { - return jsr237WorkManager; - } -// try { -// InitialContext ctx = new InitialContext(); -// jsr237WorkManager = (ThreadPoolWorkManager)ctx.lookup("java:comp/env/wm/TuscanyWorkManager"); -// } catch (Throwable e) { -// // ignore -// } - if (jsr237WorkManager == null) { - jsr237WorkManager = new ThreadPoolWorkManager(0); - } - return jsr237WorkManager; - } - - /** - * Schedules a unit of work for future execution. The notification listener is used to register interest in - * callbacks regarding the status of the work. - * - * @param work The unit of work that needs to be asynchronously executed. - */ - public <T extends Runnable> void scheduleWork(T work) { - scheduleWork(work, null); - } - - /** - * Schedules a unit of work for future execution. The notification listener is used to register interest in - * callbacks regarding the status of the work. - * - * @param work The unit of work that needs to be asynchronously executed. - * @param listener Notification listener for callbacks. - */ - public <T extends Runnable> void scheduleWork(T work, NotificationListener<T> listener) { - - if (work == null) { - throw new IllegalArgumentException("Work cannot be null"); - } - - Work<T> jsr237Work = new Work<T>(work); - try { - if (listener == null) { - getWorkManager().schedule(jsr237Work); - } else { - Jsr237WorkListener<T> jsr237WorkListener = new Jsr237WorkListener<T>(listener, work); - getWorkManager().schedule(jsr237Work, jsr237WorkListener); - } - } catch (IllegalArgumentException ex) { - if (listener != null) { - listener.workRejected(work); - } else { - throw new WorkSchedulerException(ex); - } - } catch (Exception ex) { - throw new WorkSchedulerException(ex); - } - - } - - public void start() { - } - - public void stop() { - if (jsr237WorkManager instanceof ThreadPoolWorkManager) { - // Allow privileged access to modify threads. Requires RuntimePermission in security - // policy. - AccessController.doPrivileged(new PrivilegedAction<Object>() { - public Object run() { - ((ThreadPoolWorkManager)jsr237WorkManager).destroy(); - return null; - } - }); - } - } - - /* - * WorkListener for keeping track of work status callbacks. - * - */ - private class Jsr237WorkListener<T extends Runnable> implements WorkListener { - - // Notification listener - private NotificationListener<T> listener; - - // Work - private T work; - - /* - * Initializes the notification listener. - */ - public Jsr237WorkListener(NotificationListener<T> listener, T work) { - this.listener = listener; - this.work = work; - } - - /* - * Callback when the work is accepted. - */ - public void workAccepted(WorkEvent workEvent) { - T work = getWork(); - listener.workAccepted(work); - } - - /* - * Callback when the work is rejected. - */ - public void workRejected(WorkEvent workEvent) { - T work = getWork(); - listener.workRejected(work); - } - - /* - * Callback when the work is started. - */ - public void workStarted(WorkEvent workEvent) { - T work = getWork(); - listener.workStarted(work); - } - - /* - * Callback when the work is completed. - */ - public void workCompleted(WorkEvent workEvent) { - T work = getWork(); - Exception exception = workEvent.getException(); - if (exception != null) { - listener.workFailed(work, exception); - } else { - listener.workCompleted(work); - } - } - - /* - * Gets the underlying work from the work event. - */ - private T getWork() { - return work; - } - - } -} diff --git a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/ThreadPoolWorkManager.java b/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/ThreadPoolWorkManager.java deleted file mode 100644 index e7728ca9a9..0000000000 --- a/tags/java/sca/2.0-M4-RC1/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(); - } - -} - diff --git a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/Work.java b/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/Work.java deleted file mode 100644 index ca06d0e854..0000000000 --- a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/Work.java +++ /dev/null @@ -1,65 +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; - -/** - * JCA work wrapper. - * - * @version $Rev$ $Date$ - */ -public class Work<T extends Runnable> { - - // Work that is being executed. - private T work; - - /* - * Initializes the work instance. - */ - public Work(T work) { - this.work = work; - } - - /* - * Returns the completed work. - */ - public T getWork() { - return work; - } - - /* - * Release the work. - */ - public void release() { - } - - /* - * Work attributes are not daemon. - */ - public boolean isDaemon() { - return false; - } - - /* - * Runs the work. - */ - public void run() { - work.run(); - } -}
\ No newline at end of file diff --git a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkEvent.java b/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkEvent.java deleted file mode 100644 index 4580011806..0000000000 --- a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkEvent.java +++ /dev/null @@ -1,80 +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 org.apache.tuscany.sca.work.WorkSchedulerException; - - - -/** - * Default immutable implementation of the <code>WorkEvent</code> class. - * - * @version $Rev$ $Date$ - */ -class WorkEvent { - - public static final int WORK_ACCEPTED = 1; - public static final int WORK_REJECTED = 2; - public static final int WORK_STARTED = 3; - public static final int WORK_COMPLETED = 4; - - // Work item for this event - private WorkItem workItem; - - // Exception if something has gone wrong - private WorkSchedulerException exception; - - /** - * Instantiates the event. - * - * @param workItem Work item for this event. - */ - public WorkEvent(final WorkItem workItem) { - this.workItem = workItem; - this.exception = workItem.getException(); - } - - /** - * Returns the work type based on whether the work was accepted, started, - * rejected or completed. - * - * @return Work type. - */ - public int getType() { - return workItem.getStatus(); - } - - /** - * Returns the work item associated with this work type. - * - * @return Work item. - */ - public WorkItem getWorkItem() { - return workItem; - } - - /** - * Returns the exception if the work completed with an exception. - * - * @return Work exception. - */ - public WorkSchedulerException getException() { - return exception; - } -} diff --git a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkItem.java b/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkItem.java deleted file mode 100644 index 0fc104d0fc..0000000000 --- a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkItem.java +++ /dev/null @@ -1,167 +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 org.apache.tuscany.sca.work.WorkSchedulerException; - -/** - * An identity based immutable implementation of the <code>WorkItem</code> - * interface. - * - * @version $Rev$ $Date$ - */ -class WorkItem { - - // Id scoped for the VM - private String id; - - // Status - private int status = -1; - - // Result - private Work<?> result; - - // Original work - private Work<?> originalWork; - - // Exception - private WorkSchedulerException exception; - - /** - * Instantiates an id for this item. - * - * @param id of this work event. - */ - protected WorkItem(final String id, final Work<?> orginalWork) { - this.id = id; - this.originalWork = orginalWork; - } - - /** - * Returns the id. - * - * @return Id of this item. - */ - public String getId() { - return id; - } - - /** - * Returns the original work. - * - * @return Original work. - */ - public Work<?> getOriginalWork() { - return originalWork; - } - - /** - * Returns the work result if the work completed. - * - * @return Work. - * @throws WorkException If the work completed with an exception. - */ - public Work<?> getResult() { - return result; - } - - /** - * Sets the result. - * - * @param result Result. - */ - protected void setResult(final Work<?> result) { - this.result = result; - } - - /** - * Returns the exception if work completed with an exception. - * - * @return Work exception. - */ - protected WorkSchedulerException getException() { - return exception; - } - - /** - * Sets the exception. - * - * @param exception Exception. - */ - protected void setException(final WorkSchedulerException exception) { - this.exception = exception; - } - - /** - * Returns the work type based on whether the work was accepted, started, - * rejected or completed. - * - * @return Work status. - */ - public int getStatus() { - return status; - } - - /** - * Sets the status. - * - * @param status Status. - */ - protected void setStatus(final int status) { - this.status = status; - } - - /** - * @see Object#hashCode() - */ - @Override - public int hashCode() { - return id.hashCode(); - } - - /** - * Indicates whether some other object is "equal to" this one. - * - * @param obj Object to be compared. - * @return true if this object is the same as the obj argument; false - * otherwise.. - */ - @Override - public boolean equals(final Object obj) { - return (obj != null) && (obj.getClass() == WorkItem.class) && ((WorkItem) obj).id.equals(id); - } - - /** - * Compares this object with the specified object for order. Returns a - * negative integer, zero, or a positive integer as this object is less - * than, equal to, or greater than the specified object. - * - * @param o Object to be compared. - * @return A negative integer, zero, or a positive integer as this object - * is less than, equal to, or greater than the specified object. - * @throws ClassCastException needs better documentation. - */ - public int compareTo(final Object o) { - if (o.getClass() != WorkItem.class) { - throw new ClassCastException(o.getClass().getName()); - } else { - return ((WorkItem) o).getId().compareTo(getId()); - } - } -} diff --git a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkListener.java b/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkListener.java deleted file mode 100644 index 38bbaeebe0..0000000000 --- a/tags/java/sca/2.0-M4-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/work/impl/WorkListener.java +++ /dev/null @@ -1,32 +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; - -public interface WorkListener { - - long IMMEDIATE = 0; - long INDEFINITE = java.lang.Long.MAX_VALUE; - - void workAccepted(WorkEvent event); - void workCompleted(WorkEvent event); - void workRejected(WorkEvent event); - void workStarted(WorkEvent event); - -} |