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/*
* 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 com.google.common.annotations.Beta;
import com.google.common.annotations.GwtCompatible;
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.
*
* @author Kevin Bourrillion
* @since 10.0
*/
@Beta
@GwtCompatible
public class TearDownStack implements TearDownAccepter {
public static final Logger logger
= Logger.getLogger(TearDownStack.class.getName());
final LinkedList<TearDown> stack = new LinkedList<TearDown>();
private final boolean suppressThrows;
public TearDownStack() {
this.suppressThrows = false;
}
public TearDownStack(boolean suppressThrows) {
this.suppressThrows = suppressThrows;
}
@Override
public final void addTearDown(TearDown tearDown) {
stack.addFirst(tearDown);
}
/**
* Causes teardown to execute.
*/
public final void runTearDown() {
List<Throwable> exceptions = new ArrayList<Throwable>();
for (TearDown tearDown : stack) {
try {
tearDown.tearDown();
} catch (Throwable t) {
if (suppressThrows) {
TearDownStack.logger.log(Level.INFO,
"exception thrown during tearDown: " + t.getMessage(), t);
} else {
exceptions.add(t);
}
}
}
stack.clear();
if ((!suppressThrows) && (exceptions.size() > 0)) {
throw ClusterException.create(exceptions);
}
}
}
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