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ARTEMIS-2943 fix static selector example 

The static-selector example was using a multicast queue instead of an
anycast queue which meant that the consumer never actually received any
of the messages. Furthermore, it wasn't actually verifying that it
received the proper messages so there was no failure. This commit
resolves these issues.
This commit is contained in:
Justin Bertram 2021-02-08 20:20:05 -06:00 committed by Clebert Suconic
parent 4f6c39809a
commit 077087571f
2 changed files with 20 additions and 11 deletions
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27
examples/features/standard/static-selector/src/main/java/org/apache/activemq/artemis/jms/example/StaticSelectorExample.java
View File

@ -28,6 +28,7 @@ import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.InitialContext;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
/**
* A simple JMS example that shows how static message selectors work.
@ -35,7 +36,9 @@ import java.util.concurrent.atomic.AtomicBoolean;
public class StaticSelectorExample {
public static void main(final String[] args) throws Exception {
AtomicBoolean result = new AtomicBoolean(true);
AtomicInteger good = new AtomicInteger(0);
AtomicInteger bad = new AtomicInteger(0);
AtomicBoolean failed = new AtomicBoolean(false);
Connection connection = null;
InitialContext initialContext = null;
try {
@ -63,7 +66,7 @@ public class StaticSelectorExample {
// Step 8. Create a JMS Message Consumer that receives 'red' messages
MessageConsumer redConsumer = session.createConsumer(queue);
redConsumer.setMessageListener(new SimpleMessageListener("red", result));
redConsumer.setMessageListener(new SimpleMessageListener("red", failed, good, bad));
// Step 9. Create five messages with different 'color' properties
TextMessage redMessage1 = session.createTextMessage("Red-1");
@ -91,7 +94,7 @@ public class StaticSelectorExample {
// Step 11. Waiting for the message listener to check the received messages.
Thread.sleep(5000);
if (!result.get())
if (good.get() != 2 || bad.get() != 0 || failed.get())
throw new IllegalStateException();
} finally {
// Step 12. Be sure to close our JMS resources!
@ -108,11 +111,15 @@ public class StaticSelectorExample {
class SimpleMessageListener implements MessageListener {
private final String name;
private AtomicBoolean result;
private AtomicInteger good;
private AtomicInteger bad;
private AtomicBoolean failed;
SimpleMessageListener(final String listener, AtomicBoolean result) {
SimpleMessageListener(final String listener, AtomicBoolean failed, AtomicInteger good, AtomicInteger bad) {
name = listener;
this.result = result;
this.failed = failed;
this.good = good;
this.bad = bad;
}
@Override
@ -125,12 +132,14 @@ class SimpleMessageListener implements MessageListener {
textMessage.getText() +
"] with color property: " +
colorProp);
if (colorProp != null && !colorProp.equals(name)) {
result.set(false);
if (colorProp != null && colorProp.equals(name)) {
good.incrementAndGet();
} else {
bad.incrementAndGet();
}
} catch (JMSException e) {
e.printStackTrace();
result.set(false);
failed.set(true);
}
}
}

4
examples/features/standard/static-selector/src/main/resources/activemq/server0/broker.xml
View File

@ -50,11 +50,11 @@ under the License.
<addresses>
<address name="exampleQueue">
<multicast>
<anycast>
<queue name="exampleQueue">
<filter string="color='red'"/>
</queue>
</multicast>
</anycast>
</address>
</addresses>
</core>