| /******************************************************************************* |
| * Copyright (c) 2005, 2009 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.runtime; |
| |
| import org.eclipse.core.internal.runtime.*; |
| import org.eclipse.osgi.util.NLS; |
| |
| /** |
| * Runs the given ISafeRunnable in a protected mode: exceptions and certain |
| * errors thrown in the runnable are logged and passed to the runnable's |
| * exception handler. Such exceptions are not rethrown by this method. |
| * <p> |
| * This class can be used without OSGi running. |
| * </p> |
| * @since org.eclipse.equinox.common 3.2 |
| */ |
| public final class SafeRunner { |
| |
| /** |
| * Runs the given runnable in a protected mode. Exceptions |
| * thrown in the runnable are logged and passed to the runnable's |
| * exception handler. Such exceptions are not rethrown by this method. |
| * <p> |
| * In addition to catching all {@link Exception} types, this method also catches certain {@link Error} |
| * types that typically result from programming errors in the code being executed. |
| * Severe errors that are not generally safe to catch are not caught by this method. |
| * </p> |
| * |
| * @param code the runnable to run |
| */ |
| public static void run(ISafeRunnable code) { |
| Assert.isNotNull(code); |
| try { |
| code.run(); |
| } catch (Exception | LinkageError | AssertionError e) { |
| handleException(code, e); |
| } |
| } |
| |
| /** |
| * Runs the given runnable in a protected mode and returns the result given by the runnable. Exceptions |
| * thrown in the runnable are logged and passed to the runnable's |
| * exception handler. Such exceptions are not rethrown by this method, instead null is returned. |
| * <p> |
| * In addition to catching all {@link Exception} types, this method also catches certain {@link Error} |
| * types that typically result from programming errors in the code being executed. |
| * Severe errors that are not generally safe to catch are not caught by this method. |
| * </p> |
| * @param <T> the result type |
| * |
| * @param code the runnable to run |
| * @return the result |
| * |
| * @since 3.11 |
| */ |
| public static <T> T run(ISafeRunnableWithResult<T> code) { |
| Assert.isNotNull(code); |
| try { |
| return code.runWithResult(); |
| } catch (Exception | LinkageError | AssertionError e) { |
| handleException(code, e); |
| return null; |
| } |
| } |
| |
| private static void handleException(ISafeRunnable code, Throwable exception) { |
| if (!(exception instanceof OperationCanceledException)) { |
| String pluginId = getBundleIdOfSafeRunnable(code); |
| IStatus status = convertToStatus(exception, pluginId); |
| makeSureUserSeesException(exception, status); |
| } |
| code.handleException(exception); |
| } |
| |
| private static void makeSureUserSeesException(Throwable exception, IStatus status) { |
| if (RuntimeLog.isEmpty()) { |
| exception.printStackTrace(); |
| } else { |
| RuntimeLog.log(status); |
| } |
| } |
| |
| private static String getBundleIdOfSafeRunnable(ISafeRunnable code) { |
| Activator activator = Activator.getDefault(); |
| String pluginId = null; |
| if (activator != null) |
| pluginId = activator.getBundleId(code); |
| if (pluginId == null) |
| return IRuntimeConstants.PI_COMMON; |
| return pluginId; |
| } |
| |
| private static IStatus convertToStatus(Throwable exception, String pluginId) { |
| String message = NLS.bind(CommonMessages.meta_pluginProblems, pluginId); |
| if (exception instanceof CoreException) { |
| MultiStatus status = new MultiStatus(pluginId, IRuntimeConstants.PLUGIN_ERROR, message, exception); |
| status.merge(((CoreException) exception).getStatus()); |
| return status; |
| } |
| return new Status(IStatus.ERROR, pluginId, IRuntimeConstants.PLUGIN_ERROR, message, exception); |
| } |
| } |