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Diffstat (limited to '')
-rw-r--r-- | sandbox/mcombellack/ohloh/tags/test/src/main/java/org/apache/tuscany/sca/core/conversation/ConversationManagerImpl.java | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/sandbox/mcombellack/ohloh/tags/test/src/main/java/org/apache/tuscany/sca/core/conversation/ConversationManagerImpl.java b/sandbox/mcombellack/ohloh/tags/test/src/main/java/org/apache/tuscany/sca/core/conversation/ConversationManagerImpl.java new file mode 100644 index 0000000000..0aa9430666 --- /dev/null +++ b/sandbox/mcombellack/ohloh/tags/test/src/main/java/org/apache/tuscany/sca/core/conversation/ConversationManagerImpl.java @@ -0,0 +1,215 @@ +/* + * 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.conversation; + +import java.security.AccessController; +import java.security.PrivilegedAction; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.UUID; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.Executors; +import java.util.concurrent.ScheduledExecutorService; +import java.util.concurrent.TimeUnit; + +/** + * @version $Rev$ $Date$ + */ +public class ConversationManagerImpl implements ConversationManager { + + private List<ConversationListener> listeners = Collections.synchronizedList(new ArrayList<ConversationListener>()); + private Map<Object, ExtendedConversation> conversations = new ConcurrentHashMap<Object, ExtendedConversation>(); + + /** + * the default max age. this is set to 1 hour + */ + private static final long DEFAULT_MAX_AGE = 60 * 60 * 1000; ; + + /** + * the default max idle time. this is set to 1 hour + */ + private static final long DEFAULT_MAX_IDLE_TIME = 60 * 60 * 1000; + + /** + * the globally used max age + */ + private final long maxAge; + + /** + * the globally used max idle time + */ + private final long maxIdleTime; + + /** + * the reaper thread + */ + private final ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(); + + /** + * constructor + */ + public ConversationManagerImpl() { + long mit = DEFAULT_MAX_IDLE_TIME; + long ma = DEFAULT_MAX_AGE; + + // Allow privileged access to read system property. Requires PropertyPermission in security + // policy. + String aProperty = AccessController.doPrivileged(new PrivilegedAction<String>() { + public String run() { + return System.getProperty("org.apache.tuscany.sca.core.scope.ConversationalScopeContainer.MaxIdleTime"); + } + }); + if (aProperty != null) { + try { + mit = (new Long(aProperty) * 1000); + } catch (NumberFormatException nfe) { + // Ignore + } + } + + // Allow privileged access to read system property. Requires PropertyPermission in security + // policy. + aProperty = AccessController.doPrivileged(new PrivilegedAction<String>() { + public String run() { + return System.getProperty("org.apache.tuscany.sca.core.scope.ConversationalScopeContainer.MaxAge"); + } + }); + if (aProperty != null) { + try { + ma = (new Long(aProperty) * 1000); + } catch (NumberFormatException nfe) { + // Ignore + } + } + + maxAge = ma; + maxIdleTime = mit; + } + + /** + * @see org.apache.tuscany.sca.core.conversation.ConversationManager#addListener(org.apache.tuscany.sca.core.conversation.ConversationListener) + */ + public void addListener(ConversationListener listener) { + listeners.add(listener); + } + + /** + * @see org.apache.tuscany.sca.core.conversation.ConversationManager#endConversation(org.apache.tuscany.sca.core.conversation.ExtendedConversation) + */ + public void endConversation(Object conversationID) { + ExtendedConversation conv = getConversation(conversationID); + if (conv != null) { + conv.setState(ConversationState.ENDED); + for (ConversationListener listener : listeners) { + listener.conversationEnded(conv); + } + conv.setConversationID(null); + conversations.remove(conversationID); + } else { + throw new IllegalStateException("Conversation " + conversationID + " doesn't exist."); + } + } + + public void expireConversation(Object conversationID) { + ExtendedConversation conv = getConversation(conversationID); + if (conv != null) { + for (ConversationListener listener : listeners) { + listener.conversationExpired(conv); + } + conversations.remove(conversationID); + } else { + throw new IllegalStateException("Conversation " + conversationID + " doesn't exist."); + } + + } + + /** + * @see org.apache.tuscany.sca.core.conversation.ConversationManager#getConversation(java.lang.Object) + */ + public ExtendedConversation getConversation(Object conversationID) { + return conversations.get(conversationID); + } + + /** + * @see org.apache.tuscany.sca.core.conversation.ConversationManager#removeListener(org.apache.tuscany.sca.core.conversation.ConversationListener) + */ + public void removeListener(ConversationListener listener) { + listeners.remove(listener); + } + + /** + * starts the reaper thread + */ + public void scheduleConversation(ExtendedConversationImpl aConversation, long time) + { + this.scheduler.schedule(aConversation, time, TimeUnit.MILLISECONDS); + } + + /** + * stops the reaper thread + */ + public synchronized void stopReaper() { + + // Prevent the scheduler from submitting any additional reapers, + // initiate an orderly shutdown if a reaper task is in progress. + this.scheduler.shutdown(); + } + + + /** + * @see org.apache.tuscany.sca.core.conversation.ConversationManager#startConversation(java.lang.Object) + */ + public ExtendedConversation startConversation(Object conversationID) { + + if (conversationID == null) { + conversationID = UUID.randomUUID().toString(); + } + ExtendedConversation conversation = getConversation(conversationID); + if (conversation != null && conversation.getState() != ConversationState.ENDED) { + throw new IllegalStateException(conversation + " already exists."); + } + + conversation = new ExtendedConversationImpl( + this, conversationID, ConversationState.STARTED); + conversations.put(conversationID, conversation); + for (ConversationListener listener : listeners) { + listener.conversationStarted(conversation); + } + return conversation; + } + + /** + * return the default max idle time + * @param impProvider the implementation Provider to extract any ConversationAttribute details + */ + public long getMaxIdleTime() { + return maxIdleTime; + } + + /** + * returns the default max age + * @param impProvider the implementation Provider to extract any ConversationAttribute details + */ + public long getMaxAge(){ + return maxAge; + } +} |