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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.tuscany.sca.core.scope;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.tuscany.sca.core.context.InstanceWrapper;
import org.apache.tuscany.sca.core.event.RequestEnd;
import org.apache.tuscany.sca.event.Event;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
/**
* A scope context which manages atomic component instances keyed on the current
* request context
*
* @version $Rev$ $Date$
*/
public class RequestScopeContainer extends AbstractScopeContainer<Thread> {
private final Map<Thread, InstanceWrapper> contexts;
public RequestScopeContainer(RuntimeComponent component) {
super(Scope.REQUEST, component);
contexts = new ConcurrentHashMap<Thread, InstanceWrapper>();
}
@Override
public void onEvent(Event event) {
checkInit();
if (event instanceof RequestEnd) {
// shutdownInstances(Thread.currentThread());
}
}
@Override
public synchronized void start() {
if (lifecycleState != UNINITIALIZED && lifecycleState != STOPPED) {
throw new IllegalStateException("Scope must be in UNINITIALIZED or STOPPED state [" + lifecycleState + "]");
}
lifecycleState = RUNNING;
}
@Override
public synchronized void stop() {
contexts.clear();
// synchronized (destroyQueues) {
// destroyQueues.clear();
// }
for (InstanceWrapper ctx : wrappers.values()) {
try {
ctx.stop();
} catch (ThreadDeath td) {
throw td;
} catch (Throwable e2) {
}
}
lifecycleState = STOPPED;
}
protected InstanceWrapper getInstanceWrapper(boolean create) throws TargetResolutionException {
InstanceWrapper ctx = wrappers.get(Thread.currentThread());
if (ctx == null && !create) {
return null;
}
if (ctx == null) {
ctx = super.createInstanceWrapper();
try {
ctx.start();
wrappers.put(Thread.currentThread(), ctx);
} catch (ThreadDeath td) {
throw td;
} catch (Throwable e) {
try {
ctx.stop();
} catch (ThreadDeath td) {
throw td;
} catch (Throwable e2) {
}
throw new TargetInitializationException(e);
}
}
return ctx;
}
@Override
public InstanceWrapper getWrapper(Thread contextId) throws TargetResolutionException {
return getInstanceWrapper(true);
}
}
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