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Posted to dev@tomcat.apache.org by bu...@apache.org on 2015/06/20 17:52:45 UTC

[Bug 58063] New: Some async responses are empty when using Javamelody and Spring-webmvc

https://bz.apache.org/bugzilla/show_bug.cgi?id=58063

            Bug ID: 58063
           Summary: Some async responses are empty when using Javamelody
                    and Spring-webmvc
           Product: Tomcat 7
           Version: 7.0.47
          Hardware: PC
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Catalina
          Assignee: dev@tomcat.apache.org
          Reporter: evernat@free.fr

Created attachment 32840
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=32840&action=edit
Source to reproduce the issue

I have a test webapp using async with Javamelody 1.56 and Spring-webmvc, in
Tomcat 7.0.47 with JDK 1.7.0_80.

When running in Tomcat 7.0.47, some async cases do not work and http responses
are empty (buttons Async, Callable, Forward Async and Forward Callable),
while others are OK (buttons Ajax, Redirect Ajax, Redirect Async, Redirect
Callable, Forward Ajax, ResponseBody Async, ResponseBody Callable).
When running in Jetty 9.1.0_RC2, all cases are OK.

I created this issue as suggested by Mark [1].

To reproduce the issue:
- unzip attached test-V3.zip
- mvn tomcat7:run
- open http://localhost:8080/ -> 4 buttons do not work and have empty
responses, with javamelody
- mvn jetty:run
- open http://localhost:8080/ -> all buttons work, with javamelody
- comment javamelody in pom.xml
- mvn tomcat7:run
- open http://localhost:8080/ -> all buttons work, without javamelody

Note: the last change [2], added before flushing the response, does not fix the
issue.

If the httpResponse is not wrapped in a CounterServletResponseWrapper by the
MonitoringFilter [3] or if Jetty is used instead of Tomcat,
there is no more issue but I do not know why.

This issue is also 338 in Javamelody:
https://code.google.com/p/javamelody/issues/detail?id=338#c6

[1]
http://mail-archives.apache.org/mod_mbox/tomcat-users/201506.mbox/%3C557DA84B.9010100@apache.org%3E
[2] https://code.google.com/p/javamelody/source/detail?r=4090
[3]
https://code.google.com/p/javamelody/source/browse/trunk/javamelody-core/src/main/java/net/bull/javamelody/MonitoringFilter.java#181

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[Bug 58063] Some async responses are empty when using Javamelody and Spring-webmvc

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58063

Violeta Georgieva <vi...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #1 from Violeta Georgieva <vi...@apache.org> ---
Hello,

In Javamelody web fragment, the filter MonitoringFilter must specify dispatcher
type ASYNC.

Regards,
Violeta


E.g.
    <filter-mapping>
        <filter-name>javamelody</filter-name>
        <url-pattern>/*</url-pattern>
                <dispatcher>REQUEST</dispatcher>
                <dispatcher>ASYNC</dispatcher>
    </filter-mapping>

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[Bug 58063] Some async responses are empty when using Javamelody and Spring-webmvc

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58063

--- Comment #2 from evernat <ev...@free.fr> ---
I did not know the async dispatcher type in filter mapping.
So, many thanks Violeta. You have removed a thorn from my side.
And this is merged in javamelody.

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[Bug 58063] Some async responses are empty when using Javamelody and Spring-webmvc

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58063

evernat <ev...@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 OS|                            |All
                 CC|                            |evernat@free.fr

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