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/*******************************************************************************
* Copyright (c) 2011, 2013 Wind River Systems, Inc. and others. All rights reserved.
* This program and the accompanying materials are made available under the terms
* of the Eclipse Public License v1.0 which accompanies this distribution, and is
* available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.runtime.stepper.extensions;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.osgi.util.NLS;
import org.eclipse.tcf.te.runtime.callback.Callback;
import org.eclipse.tcf.te.runtime.concurrent.util.ExecutorsUtil;
import org.eclipse.tcf.te.runtime.interfaces.IConditionTester;
import org.eclipse.tcf.te.runtime.interfaces.ISharedConstants;
import org.eclipse.tcf.te.runtime.interfaces.properties.IPropertiesContainer;
import org.eclipse.tcf.te.runtime.stepper.activator.CoreBundleActivator;
import org.eclipse.tcf.te.runtime.stepper.interfaces.IFullQualifiedId;
import org.eclipse.tcf.te.runtime.stepper.interfaces.IStep;
import org.eclipse.tcf.te.runtime.stepper.interfaces.IStepContext;
import org.eclipse.tcf.te.runtime.stepper.interfaces.IStepExecutor;
import org.eclipse.tcf.te.runtime.stepper.interfaces.IStepper;
import org.eclipse.tcf.te.runtime.stepper.interfaces.tracing.ITraceIds;
import org.eclipse.tcf.te.runtime.stepper.nls.Messages;
import org.eclipse.tcf.te.runtime.utils.ProgressHelper;
import org.eclipse.tcf.te.runtime.utils.StatusHelper;
/**
* Step executor implementation.
* <p>
* The step executor is responsible for initiating the execution of a single step. The executor
* creates and associated the step callback and blocks the execution till the executed step invoked
* the callback.
* <p>
* The step executor is passing any status thrown by the executed step to the parent stepper
* instance for handling.
* <p>
* If the step to execute is of type {@link IExtendedStep}, the step executor is calling
* {@link IExtendedStep#initializeFrom(IAdaptable, IPropertiesContainer, IFullQualifiedId, IProgressMonitor)} and
* {@link IExtendedStep#validateExecute(IAdaptable, IPropertiesContainer, IFullQualifiedId, IProgressMonitor)} before calling
* {@link IStep#execute(IAdaptable, IPropertiesContainer, IFullQualifiedId, IProgressMonitor, org.eclipse.tcf.te.runtime.interfaces.callback.ICallback)}.
* <p>
* The methods will be called within the current step executor thread.
* <p>
* The stepper implementation can be traced and profiled by setting the debug options:
* <ul>
* <li><i>org.eclipse.tcf.te.runtime.stepper/trace/stepping</i></li>
* <li><i>org.eclipse.tcf.te.runtime.stepper/profile/stepping</i></li>
* </ul>
*/
public class StepExecutor implements IStepExecutor {
private final IStepper stepper;
public final DateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); //$NON-NLS-1$
/**
* Constructor.
*/
public StepExecutor(IStepper stepper) {
this.stepper = stepper;
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.stepper.interfaces.IStepExecutor#execute(org.eclipse.tcf.te.runtime.stepper.interfaces.IStep, org.eclipse.tcf.te.runtime.stepper.interfaces.IFullQualifiedId, org.eclipse.tcf.te.runtime.stepper.interfaces.IStepContext, org.eclipse.tcf.te.runtime.interfaces.properties.IPropertiesContainer, org.eclipse.core.runtime.IProgressMonitor)
*/
@Override
public final void execute(final IStep step, final IFullQualifiedId id, final IStepContext context, final IPropertiesContainer data, IProgressMonitor progress) throws CoreException {
Assert.isNotNull(step);
Assert.isNotNull(id);
Assert.isNotNull(context);
Assert.isNotNull(data);
Assert.isNotNull(progress);
long startTime = System.currentTimeMillis();
CoreBundleActivator.getTraceHandler().trace("StepExecutor#execute: *** START (" + step.getLabel() + ")", //$NON-NLS-1$ //$NON-NLS-2$
0, ITraceIds.TRACE_STEPPING, IStatus.WARNING, this);
CoreBundleActivator.getTraceHandler().trace(" [" + ISharedConstants.TIME_FORMAT.format(new Date(startTime)) + "]" //$NON-NLS-1$ //$NON-NLS-2$
+ " ***", //$NON-NLS-1$
0, ITraceIds.PROFILE_STEPPING, IStatus.WARNING, this);
int ticksToUse = step.getTotalWork(context, data);
progress = ProgressHelper.getProgressMonitor(progress, ticksToUse);
Assert.isNotNull(progress);
ProgressHelper.beginTask(progress, step.getLabel(), ticksToUse);
// Create the handler (and the callback) for the current step
final Callback callback = new Callback();
// Catch any exception that might occur during execution.
// Errors are passed through by definition.
CoreException result = null;
boolean canceled = false;
try {
step.initializeFrom(context, data, id, progress);
step.validateExecute(context, data, id, progress);
step.execute(context, data, id, progress, callback);
IConditionTester conditionTester = new Callback.CallbackDoneConditionTester(callback, progress, step.getCancelTimeout()) {
boolean cancelCalled = false;
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.callback.Callback.CallbackDoneConditionTester#isConditionFulfilled()
*/
@Override
public boolean isConditionFulfilled() {
if (!cancelCalled && monitor != null && monitor.isCanceled()) {
cancelCalled = true;
step.cancel(context, data, id, monitor);
}
return super.isConditionFulfilled();
}
};
// Wait till the step finished, an execution occurred or the
// user hit cancel on the progress monitor.
ExecutorsUtil.waitAndExecute(0, conditionTester);
if (callback.getStatus() == null || callback.getStatus().isOK()) {
return;
}
if (callback.getStatus().matches(IStatus.CANCEL) || progress.isCanceled()) {
throw new OperationCanceledException(callback.getStatus().getMessage());
}
// Check the info/warning/error status of the step
result = normalizeStatus(step, id, context, data, callback.getStatus(), progress);
}
catch (OperationCanceledException e) {
CoreBundleActivator.getTraceHandler().trace("StepExecutor#execute: *** CANCEL (" + step.getLabel() + ")" //$NON-NLS-1$ //$NON-NLS-2$
+ ", message = '" + e.getMessage() + "'", //$NON-NLS-1$ //$NON-NLS-2$
0, ITraceIds.TRACE_STEPPING, IStatus.WARNING, this);
canceled = true;
throw e;
}
catch (Exception e) {
result = normalizeStatus(step, id, context, data, StatusHelper.getStatus(e), progress);
}
finally {
if (!progress.isCanceled()) {
progress.done();
}
// Give the step a chance for cleanup
step.cleanup(context, data, id, progress);
long endTime = System.currentTimeMillis();
CoreBundleActivator.getTraceHandler().trace(" [" + ISharedConstants.TIME_FORMAT.format(new Date(endTime)) //$NON-NLS-1$
+ " , delay = " + (endTime - startTime) + " ms]" //$NON-NLS-1$ //$NON-NLS-2$
+ " ***", //$NON-NLS-1$
0, ITraceIds.PROFILE_STEPPING, IStatus.WARNING, this);
if (!canceled) {
if (result == null) {
CoreBundleActivator.getTraceHandler().trace("StepExecutor#execute: *** DONE (" + step.getLabel() + ")", //$NON-NLS-1$ //$NON-NLS-2$
0, ITraceIds.TRACE_STEPPING, IStatus.WARNING, this);
}
else {
CoreBundleActivator.getTraceHandler().trace("StepExecutor#execute: *** ERROR (" + step.getLabel() + ")" //$NON-NLS-1$ //$NON-NLS-2$
+ ", message = '" + result.getLocalizedMessage() + "'" //$NON-NLS-1$ //$NON-NLS-2$
+ ", cause = " + result.getStatus().getException(), //$NON-NLS-1$
0, ITraceIds.TRACE_STEPPING, IStatus.WARNING, this);
throw result;
}
}
}
}
/**
* Normalize the given status.
*
* @param step The step.
* @param id The fully qualified id.
* @param context The context.
* @param data The step data.
* @param status The status.
*
* @return CoreException if the operation failed
*/
private CoreException normalizeStatus(IStep step, IFullQualifiedId id, IStepContext context , IPropertiesContainer data, IStatus status, IProgressMonitor progress) {
Assert.isNotNull(context);
Assert.isNotNull(data);
Assert.isNotNull(id);
Assert.isNotNull(step);
String message = formatMessage(status, step, id, context, data);
status = new Status(status.getSeverity(), status.getPlugin(), status.getCode(), message != null ? message : status.getMessage(), status.getException());
return new CoreException(status);
}
/**
* Format the message depending on the severity.
*
* @param message The message to format.
* @param severity The message severity.
* @param step The step.
* @param id The full qualified step id.
* @param context The target context.
* @param data The step data.
*
* @return Formatted message.
*/
protected String formatMessage(IStatus status, IStep step, IFullQualifiedId id, IStepContext context, IPropertiesContainer data) {
String template = null;
switch (status.getSeverity()) {
case IStatus.INFO:
template = Messages.StepExecutor_info_stepFailed;
break;
case IStatus.WARNING:
template = Messages.StepExecutor_warning_stepFailed;
break;
case IStatus.ERROR:
template = Messages.StepExecutor_error_stepFailed;
break;
}
// If we cannot determine the formatted message template, just return the message as is
if (template == null) {
return status.getMessage();
}
// Format the core message
String formattedMessage = NLS.bind(template, new String[] { stepper.getLabel(), status.getMessage(), step.getLabel() != null && step.getLabel().trim().length() > 0 ? step.getLabel() : step.getId() });
// In debug mode, there is even more information to add
if (Platform.inDebugMode()) {
String date = DATE_FORMAT.format(new Date(System.currentTimeMillis()));
formattedMessage += NLS.bind(Messages.StepExecutor_stepFailed_debugInfo, new String[] { context.getName(), id.toString().replaceAll("/>", "/>\n"), date }); //$NON-NLS-1$ //$NON-NLS-2$
}
return formattedMessage;
}
}
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