Hi Romain,
If it is OK for me to add the CXF SSE transport and Tomcat WebSocket maven 
dependencies to the meecrowave-core POM in the test scope I can write a unit 
test to boot up Meecrowave with SSE enable and execute a couple of SSE and 
normal JAX-RS requests.
Regards,
Aaron
 

    On Saturday, February 3, 2018 3:48 PM, Romain Manni-Bucau 
<rmannibu...@gmail.com> wrote:
 

 

Le 3 févr. 2018 21:42, "Aaron Anderson" <aaronander...@acm.org> a écrit :

Thanks Romain. After further investigation I needed to specify servlet init 
parameter for Atmosphere so that it would not attempt to auto-detect the 
servlet mapping:
cxf.servlet.params.org. atmosphere.container. JSR356AsyncSupport. mappingPath=/*

I also needed to apply a trivial fix to Meecrowave so that the destinations 
registered on the alternative transport were registered with Meecrowave:
https://github.com/apache/ meecrowave/pull/5

Oh, this is a good one! Do you see how to add a test for it? If not i can help 
next week.



After applying all of these changes I got JAX-RS SSE working!!!
Thanks for your assistance!
Aaron


 

    On Saturday, February 3, 2018 12:05 PM, Romain Manni-Bucau 
<rmannibu...@gmail.com> wrote:
 

 Hi
did you add tomcat-websocket too?
the reason behind it is to let /index.html works even if you didn't set any 
application for your jaxrs endpoint and therefore we bound /* by default.
normally you don't need atmosphere setup if you have websocket and the filter 
is before ours so it should work.

Romain Manni-Bucau
@rmannibucau |  Blog | Old Blog | Github | LinkedIn | Book
2018-02-03 19:01 GMT+01:00 Aaron Anderson <aaronander...@acm.org>:

Hi All,
I made some progress on getting JAX-RS 2.1 SSE working on Meecrowave but I 
encountered an issue I can't get past. To get CXF SSE working on Meecrowave I 
had to do the following:
1) Add in the CXF SSE maven dependency to my runner:         <dependency>       
     <groupId>org.apache.cxf</ groupId>            <artifactId>cxf-rt-rs-sse</ 
artifactId>            <version>3.2.1</version>        </dependency> 
2) Update my runner meecrowave.properties to exclude atomosphere (many 
unresolved classes and an ambiguous CDI dependency) and also set the CXF 
transport to the SSE extension transport. 

scanning-package-exclude=org. atmospherecxf.servlet.params. 
transportId=http://cxf.apache. org/transports/http/ssecxf.servlet.params.jaxrs. 
scope=singleton
3) In addition to setting the transport on the front for CXF request handling 
the transport also needs to be set on the backend CXF JAXRSCdiResourceExtension 
that discovers resources by annotation. The SSE extension's  
SseTransportCustomizationExten sion class performs this operation but currently 
it is not annotated with any CDI annotations so OpenWebBeans classpath scanning 
is ignoring it. I plan to open a CXF issue on this but for now I added a CDI 
extension to my runner to make OpenWebBeans aware of the class:
 import org.apache.cxf.jaxrs.sse.cdi. SseTransportCustomizationExten sion;
public class SSECDIExtension implements Extension {
 void addBeansFromJava(@Observes final BeforeBeanDiscovery bbd, final 
BeanManager bm) { bbd.addAnnotatedType(bm. createAnnotatedType( 
SseTransportCustomizationExten sion.class)); }}
After these changes the CXF SSE atmosphere runtime starts up but the following 
exception is generated:
[11:18:49.098][ERROR][           main][   
org.atmosphere.util.IOUtils]java.lang. IllegalStateException: Unable to 
configure jsr356 at that stage. No Servlet associated with cxf-cdi        at 
org.atmosphere.util.IOUtils. guestRawServletPath(IOUtils. java:275) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.atmosphere.util.IOUtils. guestServletPath(IOUtils.java: 248) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.atmosphere.container. JSR356AsyncSupport.<init>( 
JSR356AsyncSupport.java:63) [intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]      
  at org.atmosphere.container. JSR356AsyncSupport.<init>( 
JSR356AsyncSupport.java:40) [intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]      
  at sun.reflect. NativeConstructorAccessorImpl. newInstance0(Native Method) 
[?:1.8.0_92]        at sun.reflect. NativeConstructorAccessorImpl. 
newInstance(Unknown Source) [?:1.8.0_92]        at sun.reflect. 
DelegatingConstructorAccessorI mpl.newInstance(Unknown Source) [?:1.8.0_92]     
   at java.lang.reflect.Constructor. newInstance(Unknown Source) [?:1.8.0_92]   
     at org.atmosphere.cpr. DefaultAsyncSupportResolver. newCometSupport( 
DefaultAsyncSupportResolver. java:237) [intworkspace-runner-2018.2.0- 
SNAPSHOT.jar:?]        at org.atmosphere.cpr. DefaultAsyncSupportResolver. 
resolveWebSocket( DefaultAsyncSupportResolver. java:308) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at org.atmosphere.cpr. 
DefaultAsyncSupportResolver. resolve( DefaultAsyncSupportResolver. java:294) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at org.atmosphere.cpr. 
AtmosphereFramework. autoDetectContainer( AtmosphereFramework.java:2083) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at org.atmosphere.cpr. 
AtmosphereFramework.init( AtmosphereFramework.java:914) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at org.atmosphere.cpr. 
AtmosphereFramework.init( AtmosphereFramework.java:838) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.apache.cxf.transport.sse. atmosphere. AtmosphereSseServletDestinatio 
n.onServletConfigAvailable( AtmosphereSseServletDestinatio n.java:107) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.apache.cxf.transport.http. DestinationRegistryImpl. 
onServletConfigAvailable( DestinationRegistryImpl.java: 182) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.apache.cxf.transport. servlet.CXFNonSpringServlet. finalizeServletInit( 
CXFNonSpringServlet.java:99) [intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]     
   at org.apache.cxf.transport. servlet.CXFNonSpringServlet. 
init(CXFNonSpringServlet.java: 91) [intworkspace-runner-2018.2.0- 
SNAPSHOT.jar:?]        at org.apache.meecrowave.cxf. CxfCdiAutoSetup$ 
MeecrowaveCXFCdiServlet.init( CxfCdiAutoSetup.java:317) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.apache.meecrowave.cxf. CxfCdiAutoSetup$1.init( CxfCdiAutoSetup.java:88) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.apache.catalina.core. ApplicationFilterConfig. initFilter( 
ApplicationFilterConfig.java: 277) [intworkspace-runner-2018.2.0- 
SNAPSHOT.jar:?]        at org.apache.catalina.core. 
ApplicationFilterConfig.<init> (ApplicationFilterConfig.java: 108) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.apache.catalina.core. StandardContext.filterStart( 
StandardContext.java:4491) [intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]       
 at org.apache.catalina.core. StandardContext.startInternal( 
StandardContext.java:5131) [intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]       
 at org.apache.catalina.util. LifecycleBase.start( LifecycleBase.java:183) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.apache.catalina.core. ContainerBase. addChildInternal( 
ContainerBase.java:740) [intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        
at org.apache.catalina.core. ContainerBase.addChild( ContainerBase.java:716) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
org.apache.catalina.core. StandardHost.addChild( StandardHost.java:703) 
[intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at org.apache.meecrowave. 
Meecrowave.deployWebapp( Meecrowave.java:350) [intworkspace-runner-2018.2.0- 
SNAPSHOT.jar:?]        at org.apache.meecrowave. Meecrowave.deployWebapp( 
Meecrowave.java:203) [intworkspace-runner-2018.2.0- SNAPSHOT.jar:?]        at 
myapp.CliExt.run(CliExt.java: 237) [myapp-runner-2018.2.0- SNAPSHOT.jar:?]      
  at myapp.CliExt.main(CliExt.java: 101) [myapp-runner-2018.2.0- 
SNAPSHOT.jar:?][11:18:49.098][WARN ][           main][pr. 
DefaultAsyncSupportResolver] Failed to create AsyncSupport class: class 
org.atmosphere.container. JSR356AsyncSupport, error: java.lang.reflect. 
InvocationTargetException[11:18:49.098][ERROR][           main][pr. 
DefaultAsyncSupportResolver] Real error: Unable to configure jsr356 at that 
stagejava.lang. IllegalStateException: Unable to configure jsr356 at that stage
This error is due to CxfCdiAutoSetup  registering a ServletFilter that 
delegates to an instance of MeecrowaveCXFCdiServlet instead of actually 
registering the MeecrowaveCXFCdiServlet servlet with Tomcat.
I haven't looked into it in much detail but is there a reason why the overrides 
provided my the filter could not be moved to the MeecrowaveCXFCdiServlet and 
have it directly registered with Tomcat where Atomosphere can access it?

Thanks!
Aaron 

    On Friday, February 2, 2018 2:22 AM, Mark Struberg <strub...@yahoo.de> 
wrote:
 

 Hi folks!

Just one minor point:
if you add anything from cxf then you might likely add it to the Meecrowave 
libs directly.
The reason is that CXF does not use the ThreadContextClassLoader when looking 
for it's own SPI implementations.
So if you have cxf-core in meecrowave-lib and the cxf jax-ws jar just in your 
WAR, then CXF will not be able to find it.

That's in most cases not a blocker.
Btw, I also started with WAR packaging but nowadays almost always do web-jars.

That means I package my UI module as jar and if I need anything then I use the 
Servlet-3.0 webresources feature.
E.g. instead of 
src/main/webapp/WEB-INF/web. xml 
I now have
src/main/resources/META-INF/ resources/WEB-INF/web.xml

Because since servlet-3.0 any content under META-INF/resources will be treated 
by the servlet container the same as if it's available under / in the WAR.

LieGrue,
strub


> Am 01.02.2018 um 07:03 schrieb Romain Manni-Bucau <rmannibu...@gmail.com>:
> 
> Hello Aaron,
> 
> AFAIK it works yes and since we are tomcat it is just a matter of adding the 
> right jars and dependencies - same than websockets setup which requires 
> tomcat-websocket.
> 
> Atmosphere has a tomcat integration too - another jar to add.
> 
> 
> Le 1 févr. 2018 06:33, "Aaron Anderson" <nickmalt...@yahoo.com> a écrit :
> Hi All,
> 
> I was wondering if Meecrowave supports JAX-RS 2.1 SSE? After adding 
> cxf-rt-rs-sse to my Maven runner POM I am able to add all the annotation to 
> my endpoint and invoke it via a JavaScript EventSource but the injected 
> SseEventSink and Sse values are null.
> 
> The CXF example manually registers a CXF servlet so I wonder if that is the 
> issue. Also the CXF project depends on Atmosphere (which I had to add to the 
> scanning-package-exclude list) which I think only works with Jetty and not 
> Tomcat. 
> 
> Any insight is appreciated. I do have Tomcat Web Sockets working but it would 
> be nice to have SSE working in JAX-RS so I can easily have a reference in the 
> endpoint to send interactive updates.
> 
> Thanks,
> 
> Aaron
> 


   



   



   

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