2:14 p.m.
Stian Thorgersen created RF-12072:
-------------------------------------
Summary: Lost event in push
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public (Everyone can see)
Reporter: Stian Thorgersen
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but without it the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"
/>
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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6:50 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Stian Thorgersen updated RF-12072:
----------------------------------
Description:
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"
/>
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
was:
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place it the event is
lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"
/>
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Reporter: Stian Thorgersen
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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6:50 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Stian Thorgersen updated RF-12072:
----------------------------------
Description:
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place it the event is
lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"
/>
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
was:
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but without it the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"
/>
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Reporter: Stian Thorgersen
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place it the event is
lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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9:48 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Brian Leathem updated RF-12072:
-------------------------------
Fix Version/s: 4.2.1.CR1
Assignee: Lukáš Fryč
Component/s: component-push/poll
Lukas, does this problem go away with the recent asynchronous improvements you committed?
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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11:48 a.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč commented on RF-12072:
---------------------------------
Hey Stian, I have imported your sample, just little modified the bean to get some
debugging output:
{code:Java}
@SessionScoped
@ManagedBean
public class RichBean {
private AtomicInteger count = new AtomicInteger(0);
public int getCount() {
int c = count.get();
System.out.println("getCount - start " + c);
new Thread() {
public void run() {
try {
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
System.out.println("push " + count.get());
topicsContext.publish(topicKey, "");
} catch (Exception e) {
e.printStackTrace();
}
};
}.start();
if (c > 0) {
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
}
}
System.out.println("getCount - end " + c);
return c;
}
}
{code}
Now, the output from server is:
{code}
11:39:33,582 INFO [stdout] (Thread-28) push 1
11:39:33,634 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 1
11:39:38,635 INFO [stdout] (Thread-29) push 2
11:39:43,635 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 1
11:39:43,660 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 2
11:39:48,661 INFO [stdout] (Thread-30) push 3
11:39:53,661 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 2
11:39:53,681 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 3
11:39:58,686 INFO [stdout] (Thread-31) push 4
11:40:03,686 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 3
11:40:03,717 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 4
11:40:08,720 INFO [stdout] (Thread-32) push 5
11:40:13,720 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 4
11:40:13,744 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 5
11:40:18,745 INFO [stdout] (Thread-33) push 6
11:40:23,744 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 5
11:40:23,768 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 6
11:40:28,769 INFO [stdout] (Thread-34) push 7
11:40:33,769 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 6
11:40:33,796 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 7
11:40:38,797 INFO [stdout] (Thread-35) push 8
11:40:43,797 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 7
11:40:43,820 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 8
11:40:48,821 INFO [stdout] (Thread-36) push 9
11:40:53,821 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 8
11:40:53,841 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 9
11:40:58,842 INFO [stdout] (Thread-37) push 10
11:41:03,842 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 9
11:41:03,862 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 10
11:41:08,863 INFO [stdout] (Thread-38) push 11
11:41:13,863 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 10
11:41:13,889 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 11
11:41:18,890 INFO [stdout] (Thread-39) push 12
11:41:23,889 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 11
11:41:23,911 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 12
11:41:28,912 INFO [stdout] (Thread-40) push 13
11:41:33,912 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 12
11:41:33,937 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 13
11:41:38,938 INFO [stdout] (Thread-41) push 14
11:41:43,938 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 13
11:41:43,961 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 14
11:41:48,961 INFO [stdout] (Thread-42) push 15
11:41:53,961 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 14
11:41:53,982 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 15
11:41:58,982 INFO [stdout] (Thread-43) push 16
11:42:03,982 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 15
11:42:03,993 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 16
11:42:08,994 INFO [stdout] (Thread-44) push 17
11:42:13,993 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 16
11:42:14,026 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 17
11:42:19,027 INFO [stdout] (Thread-45) push 18
11:42:24,027 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 17
11:42:24,050 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 18
{code}
The AJAX re-render is actually done each 10 seconds, thus it returns stale value, but
that's completely expected behavior since the {{getCount}} needs to wait for returning
previous value (it's JSF requirement- only one AJAX request at time).
When we comment the {{Thread.sleep(10000);}} we get:
{code}
11:43:13,067 INFO [stdout] (Thread-50) push 1
11:43:13,123 INFO [stdout] (http--0.0.0.0-8080-3) getCount - start 1
11:43:13,124 INFO [stdout] (http--0.0.0.0-8080-3) getCount - end 1
11:43:18,136 INFO [stdout] (Thread-51) push 2
11:43:18,167 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 2
11:43:18,174 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 2
11:43:23,180 INFO [stdout] (Thread-52) push 3
11:43:23,203 INFO [stdout] (http--0.0.0.0-8080-4) getCount - start 3
11:43:23,203 INFO [stdout] (http--0.0.0.0-8080-4) getCount - end 3
11:43:28,205 INFO [stdout] (Thread-53) push 4
11:43:28,225 INFO [stdout] (http--0.0.0.0-8080-3) getCount - start 4
11:43:28,247 INFO [stdout] (http--0.0.0.0-8080-3) getCount - end 4
11:43:33,254 INFO [stdout] (Thread-54) push 5
11:43:33,277 INFO [stdout] (http--0.0.0.0-8080-3) getCount - start 5
11:43:33,278 INFO [stdout] (http--0.0.0.0-8080-3) getCount - end 5
{code}
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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11:48 a.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč commented on RF-12072:
---------------------------------
With regards to previous records I'm rejecting this issue.
Feel free to reopen it when necessary.
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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11:48 a.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč resolved RF-12072.
-----------------------------
Fix Version/s: (was: 4.2.1.CR1)
Resolution: Rejected
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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12:49 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Stian Thorgersen commented on RF-12072:
---------------------------------------
By wrapping "Thread.sleep(10000);" with "if (c > 0)" the example
doesn't work, as you allow the page to be rendered fully before the first event is
sent, hence bypassing the problem.
In my application I use the push component to refresh the views when new data is
available. The application allows users to "add/change" data asynchronously, so
the data may be already changed when the model values are updated, or it may be changed
later. In certain situations, especially when the server is running on a slow machine, the
client can miss the update events altogether:
* Client presses commandButton
* Asynchronous change to data started
* JSF model values updated
* Data updated + update event is fired
* Page is viewed in browser, but update event is lost
It works fine in either of the following scenarios:
* Client presses commandButton
* Asynchronous change to data started
* Data updated + update event is fired
* JSF model values updated (missed event isn't a problem as data is changed before
model values are updated)
* Page is viewed in browser
and:
* Client presses commandButton
* Asynchronous change to data started
* JSF model values updated
* Page is viewed in browser
* Data updated + update event is fired (page is refreshed by push component and new values
are retrieved from server)
The example tries to force the first scenario where the data is lost by making sure the
page is viewed after the event is fired.
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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5:14 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč reopened RF-12072:
-----------------------------
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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5:14 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč commented on RF-12072:
---------------------------------
Hi Stian,
you are right, it's the problem of timing, I forgot I have added the condition.
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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5:20 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč updated RF-12072:
----------------------------
Fix Version/s: 4.2.1.CR1
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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9:37 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč commented on RF-12072:
---------------------------------
Hey Stian, I have added simple naive workaround for this issue.
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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9:37 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč updated RF-12072:
----------------------------
Workaround Description:
Use {{a4j:jsFunction}} and {{<h:body onload=... />}}
{code:XML}
<h:body onload="forceReloadChat()">
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<a4j:jsFunction name="forceReloadChat" render="count"
/>
<h:outputText value="#{richBean.count}" id="count" />
</h:form>
</h:body>
{code}
Workaround: Workaround Exists
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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9:42 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč commented on RF-12072:
---------------------------------
Currently {{a4j:push}} subscribes once page is fully loaded [1].
What we can do is subscribe immediately, but queue all requests which will come before
document is ready.
Then on document ready event, we will fire all events queued before.
[1]
https://github.com/richfaces/components/blob/develop/core/ui/src/main/res...
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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9:44 p.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč commented on RF-12072:
---------------------------------
Hey Stian, any chance you could look into fixing the issue the proposed way ^ ?
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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9:42 a.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč commented on RF-12072:
---------------------------------
The proposed solution of queuing requests solves the issue only partially - it
significantly decreases probability of losing event, but it still doesn't eliminate it
completely.
To ensure completeness, you would need to block until a client is subscribed to a topic
before you could continue with rendering of the page.
----
Another suggestion is to create new event {{subscribed}}, allowing you to react on
successful subscription with specific action - in this case partial page reload.
----
Still we need to make sure this behavior is documented properly.
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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11:28 a.m.
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Stian Thorgersen commented on RF-12072:
---------------------------------------
{quote}
Hey Stian, any chance you could look into fixing the issue the proposed way ^ ?
{quote}
Are you talking about the workaround or queueing requests?
I think the best solution is the subscribed event, as the other solution of queueing
requests sounds fairly complex + as you say it doesn't eliminate the problem.
Lost event in push
------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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12:19 p.m.
New subject: [JBoss JIRA] (RF-12072) Add onsubscribed event (was: Lost event in push)
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč updated RF-12072:
----------------------------
Summary: Add onsubscribed event (was: Lost event in push) (was: Lost event in push)
Affects: Documentation (Ref Guide, User Guide, etc.)
Add onsubscribed event (was: Lost event in push)
------------------------------------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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12:23 p.m.
New subject: [JBoss JIRA] (RF-12072) Push: add onsubscribed event (was: Lost event in push)
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč updated RF-12072:
----------------------------
Summary: Push: add onsubscribed event (was: Lost event in push) (was: Add
onsubscribed event (was: Lost event in push))
Push: add onsubscribed event (was: Lost event in push)
------------------------------------------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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12:25 p.m.
New subject: [JBoss JIRA] (RF-12072) Push: add onsubscribed event (was: Lost event in push)
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč commented on RF-12072:
---------------------------------
Verified that addition of {{subscribed}} event fixes the issue:
{code:xml}
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
<a4j:ajax event="subscribed" render="count" />
</a4j:push>
{code}
Push: add onsubscribed event (was: Lost event in push)
------------------------------------------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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12:27 p.m.
New subject: [JBoss JIRA] (RF-12072) Push: add onsubscribed event (was: Lost event in push)
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč commented on RF-12072:
---------------------------------
Stian, I was talking about queuing mechanism, but we have decided to rather support
{{subscribed}} event.
Thanks for cooperating on this issue.
Push: add onsubscribed event (was: Lost event in push)
------------------------------------------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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12:27 p.m.
New subject: [JBoss JIRA] (RF-12072) Push: add onsubscribed event (was: Lost event in push)
[
https://issues.jboss.org/browse/RF-12072?page=com.atlassian.jira.plugin.s...
]
Lukáš Fryč resolved RF-12072.
-----------------------------
Resolution: Done
Push: add onsubscribed event (was: Lost event in push)
------------------------------------------------------
Key: RF-12072
URL: https://issues.jboss.org/browse/RF-12072
Project: RichFaces
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: component-push/poll
Reporter: Stian Thorgersen
Assignee: Lukáš Fryč
Fix For: 4.2.1.CR1
Event can be lost if produced while a response is being prepared. I've attached an
example where a push event is used to refresh a count whenever an event is fired. It's
using Thread.sleep to simulate an event being produced while the response is being
prepared. Note, if the sleep just before returning the count is removed it all works fine,
and the page is refreshed every 5 seconds, but with the sleep in place the event is lost.
View:
{code}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"
lang="en-GB"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8" />
</h:head>
<h:body>
<h:form id="myForm">
<a4j:push address="chat">
<a4j:ajax event="dataavailable" render="count" />
</a4j:push>
<h:outputText value="#{myBean.count}" id="count" />
</h:form>
</h:body>
</html>
{code}
Bean:
{code}
package com.example;
import java.io.Serializable;
import java.util.concurrent.atomic.AtomicInteger;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.richfaces.application.push.TopicKey;
import org.richfaces.application.push.TopicsContext;
@Named
@SessionScoped
public class MyBean implements Serializable
{
private AtomicInteger count = new AtomicInteger();
public int getCount()
{
int c = count.get();
new Thread()
{
public void run()
{
try
{
Thread.sleep(5000);
count.incrementAndGet();
TopicKey topicKey = new TopicKey("chat");
TopicsContext topicsContext = TopicsContext.lookup();
topicsContext.publish(topicKey, "");
}
catch (Exception e)
{
e.printStackTrace();
}
};
}.start();
try
{
Thread.sleep(10000);
}
catch (InterruptedException e)
{
}
return c;
}
}
{code}
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4406
days inactive
4412
days old
richfaces-issues@lists.jboss.org
21 comments
3 participants
participants (3)
-
Brian Leathem (JIRA) -
Lukáš Fryč (JIRA)
-
Stian Thorgersen (JIRA)