| /* |
| * Copyright (C) 2008 The Guava Authors |
| * |
| * Licensed 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 com.google.common.testing; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import com.google.common.annotations.Beta; |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.common.collect.Lists; |
| import com.google.errorprone.annotations.concurrent.GuardedBy; |
| import java.util.ArrayList; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * A {@code TearDownStack} contains a stack of {@link TearDown} instances. |
| * |
| * <p>This class is thread-safe. |
| * |
| * @author Kevin Bourrillion |
| * @since 10.0 |
| */ |
| @Beta |
| @GwtCompatible |
| public class TearDownStack implements TearDownAccepter { |
| private static final Logger logger = Logger.getLogger(TearDownStack.class.getName()); |
| |
| @GuardedBy("stack") |
| final LinkedList<TearDown> stack = new LinkedList<>(); |
| |
| private final boolean suppressThrows; |
| |
| public TearDownStack() { |
| this.suppressThrows = false; |
| } |
| |
| public TearDownStack(boolean suppressThrows) { |
| this.suppressThrows = suppressThrows; |
| } |
| |
| @Override |
| public final void addTearDown(TearDown tearDown) { |
| synchronized (stack) { |
| stack.addFirst(checkNotNull(tearDown)); |
| } |
| } |
| |
| /** Causes teardown to execute. */ |
| public final void runTearDown() { |
| List<Throwable> exceptions = new ArrayList<>(); |
| List<TearDown> stackCopy; |
| synchronized (stack) { |
| stackCopy = Lists.newArrayList(stack); |
| stack.clear(); |
| } |
| for (TearDown tearDown : stackCopy) { |
| try { |
| tearDown.tearDown(); |
| } catch (Throwable t) { |
| if (suppressThrows) { |
| logger.log(Level.INFO, "exception thrown during tearDown", t); |
| } else { |
| exceptions.add(t); |
| } |
| } |
| } |
| if (!suppressThrows && (exceptions.size() > 0)) { |
| throw ClusterException.create(exceptions); |
| } |
| } |
| } |