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From "Hiranya Jayathilaka (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AXIS2-5049) Axis2 Services / ServiceGroups Not Updating Properly When doing Hot-Update with Transport Session
Date Sat, 28 May 2011 07:13:47 GMT

    [ https://issues.apache.org/jira/browse/AXIS2-5049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13040555#comment-13040555
] 

Hiranya Jayathilaka commented on AXIS2-5049:
--------------------------------------------

This patch breaks some of the existing stuff. Most significantly the following change is very
dangerous:

public ArrayList<AxisObserver> getObserversList() {
-        return observersList;
+        return new ArrayList<AxisObserver>(observers);
}

There are many classes that use the getObserversList method to remove an already existing
observer. With the above change it cannot be used to unregister observers anymore. There is
a definite regression in base transport and there could be others elsewhere.

> Axis2 Services / ServiceGroups Not Updating Properly When doing Hot-Update with Transport
Session
> -------------------------------------------------------------------------------------------------
>
>                 Key: AXIS2-5049
>                 URL: https://issues.apache.org/jira/browse/AXIS2-5049
>             Project: Axis2
>          Issue Type: Bug
>          Components: kernel
>    Affects Versions: 1.5.4
>            Reporter: Anjana Fernando
>             Fix For: nightly
>
>         Attachments: AXIS2-5049-Patch-2.txt, AXIS2-5049-Patch.txt
>
>
> The scenario is explained in the following points,
> * AxisService in Transport Session Scope.
> * Incoming request.
> * Create ServiceContext, ServiceGroupContext from AxisService and AxisServiceGroup and
store it in SessionContext.
> * SessionContext contains fixed ServiceContext and ServiceGroupContext throughout Transport
Session lifetime.
> * Changes to AxisConfiguratio wont be known by SessionContext, removing of services to
service group, removing service group.
> * Removing Service Group, removing Service from service group must be communicated to
SessionContext, so it can remove the necessory items from itself, and refresh the services
/ service groups in the next request.
> Because of the above problem, when doing hotupdate, a service which is in transport session
will not be updated to the newly deployed service. Also, same for service groups, if a service
group was removed and added again, the service group that is in the ServiceGroupContext will
be the old service group. 
> Cheers,
> Anjana.

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