diff options
Diffstat (limited to 'target_explorer/plugins/org.eclipse.tcf.te.runtime.stepper/src/org/eclipse/tcf/te/runtime/stepper/extensions/AbstractContextStepExecutor.java')
| -rw-r--r-- | target_explorer/plugins/org.eclipse.tcf.te.runtime.stepper/src/org/eclipse/tcf/te/runtime/stepper/extensions/AbstractContextStepExecutor.java | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/target_explorer/plugins/org.eclipse.tcf.te.runtime.stepper/src/org/eclipse/tcf/te/runtime/stepper/extensions/AbstractContextStepExecutor.java b/target_explorer/plugins/org.eclipse.tcf.te.runtime.stepper/src/org/eclipse/tcf/te/runtime/stepper/extensions/AbstractContextStepExecutor.java new file mode 100644 index 000000000..1c02471dd --- /dev/null +++ b/target_explorer/plugins/org.eclipse.tcf.te.runtime.stepper/src/org/eclipse/tcf/te/runtime/stepper/extensions/AbstractContextStepExecutor.java @@ -0,0 +1,190 @@ +/******************************************************************************* + * Copyright (c) 2011 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.util.Date; + +import org.eclipse.core.runtime.Assert; +import org.eclipse.core.runtime.CoreException; +import org.eclipse.core.runtime.IProgressMonitor; +import org.eclipse.core.runtime.IStatus; +import org.eclipse.core.runtime.OperationCanceledException; +import org.eclipse.core.runtime.Status; +import org.eclipse.tcf.te.runtime.stepper.activator.CoreBundleActivator; +import org.eclipse.tcf.te.runtime.stepper.interfaces.IContext; +import org.eclipse.tcf.te.runtime.stepper.interfaces.IContextStep; +import org.eclipse.tcf.te.runtime.stepper.interfaces.IContextStepExecutor; +import org.eclipse.tcf.te.runtime.stepper.interfaces.IExtendedContextStep; +import org.eclipse.tcf.te.runtime.stepper.interfaces.IFullQualifiedId; +import org.eclipse.tcf.te.runtime.stepper.interfaces.tracing.ITraceIds; +import org.eclipse.tcf.te.runtime.callback.Callback; +import org.eclipse.tcf.te.runtime.concurrent.util.ExecutorsUtil; +import org.eclipse.tcf.te.runtime.interfaces.ISharedConstants; +import org.eclipse.tcf.te.runtime.interfaces.properties.IPropertiesContainer; +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 IExtendedContextStep}, the step executor is calling + * {@link IExtendedContextStep#initializeFrom(org.eclipse.tcf.te.runtime.stepper.interfaces.IContext, Object, org.eclipse.tcf.te.runtime.stepper.interfaces.IFullQualifiedId, IProgressMonitor)} and + * {@link IExtendedContextStep#validateExecute(org.eclipse.tcf.te.runtime.stepper.interfaces.IContext, Object, org.eclipse.tcf.te.runtime.stepper.interfaces.IFullQualifiedId, IProgressMonitor)} before calling + * {@link IContextStep#execute(org.eclipse.tcf.te.runtime.stepper.interfaces.IContext, Object, org.eclipse.tcf.te.runtime.stepper.interfaces.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 abstract class AbstractContextStepExecutor implements IContextStepExecutor { + + /* (non-Javadoc) + * @see org.eclipse.tcf.te.runtime.stepper.interfaces.IContextStepExecutor#execute(org.eclipse.tcf.te.runtime.stepper.interfaces.IContextStep, org.eclipse.tcf.te.runtime.stepper.interfaces.IFullQualifiedId, org.eclipse.tcf.te.runtime.stepper.interfaces.IContext, org.eclipse.tcf.te.runtime.interfaces.properties.IPropertiesContainer, org.eclipse.core.runtime.IProgressMonitor) + */ + @Override + public final void execute(IContextStep step, IFullQualifiedId id, final IContext 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("AbstractContextStepExecutor#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 instanceof IExtendedContextStep) ? ((IExtendedContextStep)step).getTotalWork(context, data) : IProgressMonitor.UNKNOWN; + progress = ProgressHelper.getProgressMonitor(progress, ticksToUse); + 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. + try { + // Execute the step. Spawn to the dispatch thread if necessary. + if (step instanceof IExtendedContextStep) { + IExtendedContextStep extendedStep = (IExtendedContextStep)step; + + // IExtendedContextStep provides protocol for initialization and validation. + extendedStep.initializeFrom(context, data, id, progress); + + // step is initialized -> now validate for execution. + // If the step if not valid for execution, validateExecute is throwing an exception. + extendedStep.validateExecute(context, data, id, progress); + } + + step.execute(context, data, id, progress, callback); + + // Wait till the step finished, an execution occurred or the + // user hit cancel on the progress monitor. + ExecutorsUtil.waitAndExecute(0, callback.getDoneConditionTester(null)); + + // Check the status of the step + normalizeStatus(step, id, context, data, callback.getStatus()); + } + catch (Exception e) { + CoreBundleActivator.getTraceHandler().trace("AbstractContextStepExecutor#execute: Exception catched: class ='" + e.getClass().getName() + "'" //$NON-NLS-1$ //$NON-NLS-2$ + + ", message = '" + e.getLocalizedMessage() + "'" //$NON-NLS-1$ //$NON-NLS-2$ + + ", cause = " //$NON-NLS-1$ + + (e instanceof CoreException ? ((CoreException)e).getStatus().getException() : e.getCause()), + 0, ITraceIds.TRACE_STEPPING, IStatus.WARNING, this); + + // If the exception is a CoreException by itself, just re-throw + if (e instanceof CoreException) { + // Check if the message does need normalization + if (isExceptionMessageFormatted(e.getLocalizedMessage())) { + throw (CoreException)e; + } + // We have to normalize the status message first + normalizeStatus(step, id, context, data, ((CoreException)e).getStatus()); + } else { + // all other exceptions are repackaged within a CoreException + normalizeStatus(step, id, context, data, StatusHelper.getStatus(e)); + } + } + finally { + if (!progress.isCanceled()) { + progress.done(); + } + + // Give the step a chance for cleanup + if (step instanceof IExtendedContextStep) { + ((IExtendedContextStep)step).cleanup(context, data, id, progress); + } + + long endTime = System.currentTimeMillis(); + CoreBundleActivator.getTraceHandler().trace("AbstractContextStepExecutor#execute: *** DONE (" + step.getLabel() + ")", //$NON-NLS-1$ //$NON-NLS-2$ + 0, ITraceIds.TRACE_STEPPING, IStatus.WARNING, this); + 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); + } + } + + private void normalizeStatus(IContextStep step, IFullQualifiedId id, IContext context , IPropertiesContainer data, IStatus status) throws CoreException { + Assert.isNotNull(context); + Assert.isNotNull(data); + Assert.isNotNull(id); + Assert.isNotNull(step); + + if (status == null || status.isOK()) { + return; + } + + switch (status.getSeverity()) { + case IStatus.CANCEL: + throw new OperationCanceledException(status.getMessage()); + default: + String message = formatMessage(status.getMessage(), status.getSeverity(), step, id, context, data); + status = new Status(status.getSeverity(), status.getPlugin(), status.getCode(), message != null ? message : status.getMessage(), status.getException()); + throw new CoreException(status); + } + } + + /** + * Checks if the given message is already formatted to get displayed to the user. + * + * @param message The message. Must not be <code>null</code>. + * @return <code>True</code> if the message is already formatted to get displayed to the user, <code>false</code> otherwise. + */ + protected abstract boolean isExceptionMessageFormatted(String message); + + /** + * 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 abstract String formatMessage(String message, int severity, IContextStep step, IFullQualifiedId id, IContext context, IPropertiesContainer data); + +} |