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fix some synchonization issues 

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@815788 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Davies 2009-09-16 14:04:20 +00:00
parent 5f2abc13c8
commit 7d4b446e67
1 changed files with 29 additions and 33 deletions
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48
activemq-core/src/test/java/org/apache/activemq/spring/ConsumerBean.java
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@ -28,32 +28,25 @@ import org.apache.commons.logging.LogFactory;
public class ConsumerBean extends Assert implements MessageListener {
private static final Log LOG = LogFactory.getLog(ConsumerBean.class);
private List<Message> messages = new ArrayList<Message>();
private Object semaphore;
private final List<Message> messages = new ArrayList<Message>();
private boolean verbose;
/**
* Constructor.
*/
public ConsumerBean() {
this(new Object());
}
/**
* Constructor, initialized semaphore object.
*
* @param semaphore
*/
public ConsumerBean(Object semaphore) {
this.semaphore = semaphore;
}
/**
* @return all the messages on the list so far, clearing the buffer
*/
public synchronized List<Message> flushMessages() {
List<Message> answer = new ArrayList<Message>(messages);
public List<Message> flushMessages() {
List<Message> answer = null;
synchronized(messages) {
answer = new ArrayList<Message>(messages);
messages.clear();
}
return answer;
}
@ -62,13 +55,13 @@ public class ConsumerBean extends Assert implements MessageListener {
*
* @param message
*/
public synchronized void onMessage(Message message) {
public void onMessage(Message message) {
synchronized (messages) {
messages.add(message);
if (verbose) {
LOG.info("Received: " + message);
}
synchronized (semaphore) {
semaphore.notifyAll();
messages.notifyAll();
}
}
@ -82,8 +75,8 @@ public class ConsumerBean extends Assert implements MessageListener {
try {
if (hasReceivedMessage()) {
synchronized (semaphore) {
semaphore.wait(4000);
synchronized (messages) {
messages.wait(4000);
}
}
} catch (InterruptedException e) {
@ -100,29 +93,30 @@ public class ConsumerBean extends Assert implements MessageListener {
* @param messageCount
*/
public void waitForMessagesToArrive(int messageCount) {
final long maxRemainingMessageCount = Math.max(0, messageCount - messages.size());
long maxRemainingMessageCount = Math.max(0, messageCount - messages.size());
LOG.info("Waiting for (" + maxRemainingMessageCount + ") message(s) to arrive");
long start = System.currentTimeMillis();
for (int i = 0; i < maxRemainingMessageCount; i++) {
long maxWaitTime = start + 120 * 1000;
while (maxRemainingMessageCount > 0) {
try {
synchronized (semaphore) {
semaphore.wait(1000);
synchronized (messages) {
messages.wait(1000);
}
if (hasReceivedMessages(messageCount)) {
if (hasReceivedMessages(messageCount) || System.currentTimeMillis() > maxWaitTime) {
break;
}
} catch (InterruptedException e) {
LOG.info("Caught: " + e);
}
maxRemainingMessageCount = Math.max(0, messageCount - messages.size());
}
long end = System.currentTimeMillis() - start;
LOG.info("End of wait for " + end + " millis");
}
public void assertMessagesArrived(int total) {
waitForMessagesToArrive(total);
synchronized (this) {
synchronized (messages) {
int count = messages.size();
assertEquals("Messages received", total, count);
@ -152,7 +146,9 @@ public class ConsumerBean extends Assert implements MessageListener {
* @param messageCount
* @return
*/
protected synchronized boolean hasReceivedMessages(int messageCount) {
protected boolean hasReceivedMessages(int messageCount) {
synchronized (messages) {
return messages.size() >= messageCount;
}
}
}