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From Mark Thomas <ma...@apache.org>
Subject Re: What is the correct way to use scanManifest
Date Fri, 10 Mar 2017 09:40:45 GMT
On 10/03/17 00:14, Hoa Phan wrote:
> looks like I can't overwrite the webapp context.xml with tomcat
> context.xml. I have no control over the WAR file until tomcat deployed it :(

I have confirmed (via remote debugging) that using

<Context ...>
   ...
   <JarScanner scanManifest="false" />
</Context>

in $CATALINA_BASE/conf/context.xml disables manifest processing.


> If I try to use tomcat server.xml and add
> <Context>
> 
>   <JarScanner scanManifest="false"/>
> 
> </Context>
> 
> inside <Host> it somehow breaks the webapp.

That is expected. The above snippet is invalid in server.xml.

> Is there any other way for me to set this scanmanifest to false.

You need to figure out what you are doing wrong with conf/context.xml

Mark


> 
> Says if I took all the jars that I saw reported as
> WARNING: Failed to scan...
> java.io.FileNotFoundException: .../common/lib/jonas_timer.jar (No such file
> or directory)
> 
> And append them to:
> tomcat.util.scan.StandardJarScanFilter.jarsToSkip
> 
> in catalina.properties, would that help ?
> 
> On Fri, Mar 10, 2017 at 10:33 AM, Mark Thomas <markt@apache.org> wrote:
> 
>> On 09/03/17 21:38, Hoa Phan wrote:
>>> I'll try that and see how it goes, thanks Mark. Btw, when I was
>> debugging I
>>> couldn't find where this method get called at all:
>>>     public void setScanManifest(boolean scanManifest) {
>>>         this.scanManifest = scanManifest;
>>>     }
>>>
>>> This props default to true:
>>>     private boolean scanManifest = true;
>>>
>>> And the StandardJarScanner always been constructed like:
>>>             jarScanner = new StandardJarScanner();
>>>
>>> How would scanManifest ever be set to false...
>>
>> Via the digester when processing server.xml or context.xml. Take a look
>> at org.apache.catalina.startup.ContextRuleSet
>>
>> Mark
>>
>>
>>>
>>> Regards,
>>>
>>> Hoa Phan.
>>>
>>>
>>>
>>>
>>> On Fri, Mar 10, 2017 at 6:44 AM, Mark Thomas <markt@apache.org> wrote:
>>>
>>>> On 09/03/17 13:15, Hoa Phan wrote:
>>>>> Hi,
>>>>>
>>>>> I see that since 8.0.38 we added a scanManifest props to JarScanner.
>>>>> But when I added the props
>>>>> into: container/tomcat8x/apache-tomcat-8.0.38/conf/context.xml
>>>>> <?xml version="1.0" encoding="UTF-8"?>
>>>>> <Context>
>>>>>     <WatchedResource>WEB-INF/web.xml</WatchedResource>
>>>>>     <WatchedResource>${catalina.base}/conf/web.xml</WatchedResource>
>>>>>
>>>>>     <!-- Uncomment this to disable session persistence across Tomcat
>>>>> restarts -->
>>>>>     <!--
>>>>>     <Manager pathname="" />
>>>>>     -->
>>>>>
>>>>>     <!-- Uncomment this to enable Comet connection tacking (provides
>>>> events
>>>>>          on session expiration as well as webapp lifecycle) -->
>>>>>     <!--
>>>>>     <Valve
>>>>> className="org.apache.catalina.valves.CometConnectionManagerValve" />
>>>>>     -->
>>>>> <JarScanner scanManifest="false" /></Context>
>>>>>
>>>>> It doesn't work and the prop is still true on startup:
>>>>
>>>> Hmm. That should work. Are you sure that file is being read at startup?
>>>> One way to check is to deliberately break it and see what happens.
>>>>
>>>> Mark
>>>>
>>>>
>>>>>
>>>>> ‚Äč
>>>>> Must I put this in the context.xml of the webapp itself. I deploy the
>>>>> webapp via a war file and have no control over the war content until
>>>>> tomcat deploys it which is too late...
>>>>>
>>>>> Is there any other way for me to turn this off using global config of
>>>>> tomcat.
>>>>>
>>>>> Thanks much.
>>>>>
>>>>> Regards,
>>>>>
>>>>> Hoa Phan
>>>>>
>>>>>
>>>>
>>>>
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>>>>
>>>>
>>>
>>
>>
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>>
>>
> 


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