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Message-ID: <672a01200709152003u3e86cb27laed10f566b291587@mail.gmail.com>
Date: Sun, 16 Sep 2007 09:03:54 +0600
From: "Ruwan Linton" <ruwan.linton@gmail.com>
To: synapse-dev@ws.apache.org
Subject: Re: Hot deployment and hot update support of mediators
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Asankha,

We can do this by removing the deployer entry from the axis2 xml (may be we
can keep it commented so that users has to just uncomment the config line in
the axis2 xml to enable it). Or do we have to provide a configuration to
start or stop the deployer in the Synapse configuration???

BTW: I saw the POJO deployer configuration was there already in the
axis2.xml. Are we using that???? Any how that POJO deployer will start a new
thread. If this is not necessary we can remove that too.

Thanks,
Ruwan.

On 9/16/07, Asankha C. Perera <asankha@wso2.com> wrote:
>
> Ruwan
>
> Though this is something really good.. I am a bit concerned as it seems
> to be a JDK provider independent implementation of the Service Provider
> model. The problem I see is in polling a directory for files to appear
> (I am ok doing this one time during startup).. thus I think it should be
> turned off by default at Synapse and we should provide the instructions
> to turn it on. While off it should not poll the directory or have any
> new thread started.
>
> thanks
> asankha
>
> Ruwan Linton wrote:
> > Hi all,
> >
> > I have done a MediatorDeployer to support hot deployment of mediators
> > (r575533) which basically is an Axis2 Deployer which is keeping an eye
> > on a specified folder and gives the control to the deploy method on
> > any file change of specified extensions.
> >
> > I have put the folder as repository/mediators for mediator lookup and
> > the extension as .jar, which is configurable through the axis2.xml in
> > the repository/conf.
> >
> > This implementation does not use the service providers concept because
> > it is only supported by the sun jdk. Instead I read the same file
> > (META-INF/services/org.apache.synapse.config.xml.MediatorFactory) in
> > the deployer to find the factory implementation and Class.forName that
> > factory, so that all the required classes will be loaded. Then the
> > deployer will register the factory implementation with the
> > MediatorFactoryFinder. Did the same for serializer as well.
> >
> > If a particular jar contains several mediators then you have to
> > specify the factory implementations separated by line breaks in the
> > org.apache.synapse.config.xml.MediatorFactory file. As usual it is
> > required to present this file and at least one entry should be there
> > and Serializer is optional.
> >
> > Any comments .....
> >
> > Thanks,
> > Ruwan
> >
> > --
> > Ruwan Linton
> > http://www.wso2.org - "Oxygenating the Web Services Platform"
>
> ---------------------------------------------------------------------
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>
>


-- 
Ruwan Linton
http://www.wso2.org - "Oxygenating the Web Services Platform"

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Asankha,<br><br>We can do this by removing the deployer entry from the axis2 xml (may be we can keep it commented so that users has to just uncomment the config line in the axis2 xml to enable it). Or do we have to provide a configuration to start or stop the deployer in the Synapse configuration???
<br><br>BTW: I saw the POJO deployer configuration was there already in the axis2.xml. Are we using that???? Any how that POJO deployer will start a new thread. If this is not necessary we can remove that too.<br><br>Thanks,
<br>Ruwan.<br><br><div><span class="gmail_quote">On 9/16/07, <b class="gmail_sendername">Asankha C. Perera</b> &lt;<a href="mailto:asankha@wso2.com">asankha@wso2.com</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Ruwan<br><br>Though this is something really good.. I am a bit concerned as it seems<br>to be a JDK provider independent implementation of the Service Provider<br>model. The problem I see is in polling a directory for files to appear
<br>(I am ok doing this one time during startup).. thus I think it should be<br>turned off by default at Synapse and we should provide the instructions<br>to turn it on. While off it should not poll the directory or have any
<br>new thread started.<br><br>thanks<br>asankha<br><br>Ruwan Linton wrote:<br>&gt; Hi all,<br>&gt;<br>&gt; I have done a MediatorDeployer to support hot deployment of mediators<br>&gt; (r575533) which basically is an Axis2 Deployer which is keeping an eye
<br>&gt; on a specified folder and gives the control to the deploy method on<br>&gt; any file change of specified extensions.<br>&gt;<br>&gt; I have put the folder as repository/mediators for mediator lookup and<br>&gt; the extension as .jar, which is configurable through the 
axis2.xml in<br>&gt; the repository/conf.<br>&gt;<br>&gt; This implementation does not use the service providers concept because<br>&gt; it is only supported by the sun jdk. Instead I read the same file<br>&gt; (META-INF/services/org.apache.synapse.config.xml.MediatorFactory) in
<br>&gt; the deployer to find the factory implementation and Class.forName that<br>&gt; factory, so that all the required classes will be loaded. Then the<br>&gt; deployer will register the factory implementation with the
<br>&gt; MediatorFactoryFinder. Did the same for serializer as well.<br>&gt;<br>&gt; If a particular jar contains several mediators then you have to<br>&gt; specify the factory implementations separated by line breaks in the
<br>&gt; org.apache.synapse.config.xml.MediatorFactory file. As usual it is<br>&gt; required to present this file and at least one entry should be there<br>&gt; and Serializer is optional.<br>&gt;<br>&gt; Any comments .....
<br>&gt;<br>&gt; Thanks,<br>&gt; Ruwan<br>&gt;<br>&gt; --<br>&gt; Ruwan Linton<br>&gt; <a href="http://www.wso2.org">http://www.wso2.org</a> - &quot;Oxygenating the Web Services Platform&quot;<br><br>---------------------------------------------------------------------
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</a><br><br></blockquote></div><br><br clear="all"><br>-- <br>Ruwan Linton<br><a href="http://www.wso2.org">http://www.wso2.org</a> - &quot;Oxygenating the Web Services Platform&quot;

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