Some Proximity usage questions

[Adrian Shum <tc...@taifook.com>]

Dear all,

I am a newbie and just tried to use Proximity 1.0 RC3
on Windows + Tomcat 5.0.30.
There are some issues that I cannot figure out
and wish someone can give me a helping hand:

1) I have setted up several remote repositories in Proximity, 
including central, ibiblio and codehaus ones.  I found that 
sometimes I receive a CHECKSUM FAILED error in mvn, and 
it will cause the artifacts failed to be downlaoded from 
Proximity and mvn will eventually goes to central to download.

After some trial-and-errors, I found that whenever there
is such CHECKSUM FAILED error on client side,
I can see in stdout of TOMCAT displaying:
INFO: Item found in total of 2 repositories, will merge them.

Did I make something wrong which cause such problem?
The scenerio seems suggesting me to avoid having 
repositories containing same artifacts but I think such
siutation should be very normal.

2) For snapshot and normal release repository, I think
maven handle differently, for which release artifiacts is
downloaded once and will not be downloaded again,
and artifats downloaded from snapshot repositories will 
make maven check for updates.  So I have setted up
two Proximity, one for non-snapshot and one for snapshot.
In my settings.xml I put two corresponding repositories, 
and I enabled snapshots in the latter one. Is it the right way 
to do?

3) I found in tomcat's log a lot of exception caused by
Proximity, for as an example:

2006-08-07 16:03:57 StandardContext[/proximity]Servlet /proximity threw load() exception
javax.servlet.ServletException: Servlet.init() for servlet dwr-invoker threw exception
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1085)
... [deleted]
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
----- Root Cause -----
javax.xml.transform.TransformerFactoryConfigurationError: Provider org.apache.xalan.processor.TransformerFactoryImpl not found
	at javax.xml.transform.TransformerFactory.newInstance(Unknown Source)
... [deleted]
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)


Proximity seems still working fine.  Is these exception 'normal'? 
I found Tomcat's log growing very fast because them.


Thanks a lot.


This email is confidential. If you are not the intended recipient, please delete it from your system and notify the sender immediately. Any unauthorized use, disclosure, dissemination or copying of this email is prohibited. Tai Fook Securities Group, its group companies and their content providers ("Parties") shall not be responsible for the accuracy or completeness of this email or its attachment, if any, which could contain virus, be corrupted, destroyed, incomplete, intercepted, lost or arrive late.   The Parites do not accept liability for any damage caused by this email.

Re: Some Proximity usage questions

[Tamás Cservenák <t....@gmail.com>]

Hi Adrian,

thanx for helping improve Proximity! Here are the answers:

1) "the checksum failed" problem is because the aggregation that Proximity
performs. It only happens if you have two or more reposes with same (or
similar) contents (like having central and apache.snapshots) in the same
repo group. IF Proximity finds two "maven-metadata.xml" on the SAME PATH, it
will MERGE THEM if the repositories are in the same group. This merging is
still "unfinished', since new checksum for the merged metadata is NOT
calculated :(

2) this is perfectly sane thing to do. A new "RC4" targeted feature will
enable Proximity to "emerge" the repo groups one level up, thus making
multiple Proximity instances unneeded. The new repo URL will be "
http://localhost:8080/px-webapp/repository/repogroup" instead of current "
http://localhost:8080/px-webapp/repository".

3) Yes, DWR (direct web remoting) is included in RCx releases, but it is
unused and unconfigured. Since I don't speak JavaScript, it will be removed
eventually or some volunteer could set it up (and make the UI ajax capable)
:)


Please use forum on http://forum.abstracthorizon.org/ for support questions,
thanx.

Have fun,
~t~

On 8/7/06, Adrian Shum <tc...@taifook.com> wrote:
>
> Dear all,
>
> I am a newbie and just tried to use Proximity 1.0 RC3
> on Windows + Tomcat 5.0.30.
> There are some issues that I cannot figure out
> and wish someone can give me a helping hand:
>
> 1) I have setted up several remote repositories in Proximity,
> including central, ibiblio and codehaus ones.  I found that
> sometimes I receive a CHECKSUM FAILED error in mvn, and
> it will cause the artifacts failed to be downlaoded from
> Proximity and mvn will eventually goes to central to download.
>
> After some trial-and-errors, I found that whenever there
> is such CHECKSUM FAILED error on client side,
> I can see in stdout of TOMCAT displaying:
> INFO: Item found in total of 2 repositories, will merge them.
>
> Did I make something wrong which cause such problem?
> The scenerio seems suggesting me to avoid having
> repositories containing same artifacts but I think such
> siutation should be very normal.
>
> 2) For snapshot and normal release repository, I think
> maven handle differently, for which release artifiacts is
> downloaded once and will not be downloaded again,
> and artifats downloaded from snapshot repositories will
> make maven check for updates.  So I have setted up
> two Proximity, one for non-snapshot and one for snapshot.
> In my settings.xml I put two corresponding repositories,
> and I enabled snapshots in the latter one. Is it the right way
> to do?
>
> 3) I found in tomcat's log a lot of exception caused by
> Proximity, for as an example:
>
> 2006-08-07 16:03:57 StandardContext[/proximity]Servlet /proximity threw
> load() exception
> javax.servlet.ServletException: Servlet.init() for servlet dwr-invoker
> threw exception
>         at org.apache.catalina.core.StandardWrapper.loadServlet(
> StandardWrapper.java:1085)
> ... [deleted]
>         at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
>         at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
> ----- Root Cause -----
> javax.xml.transform.TransformerFactoryConfigurationError: Provider
> org.apache.xalan.processor.TransformerFactoryImpl not found
>         at javax.xml.transform.TransformerFactory.newInstance(Unknown
> Source)
> ... [deleted]
>         at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
>
>
> Proximity seems still working fine.  Is these exception 'normal'?
> I found Tomcat's log growing very fast because them.
>
>
> Thanks a lot.
>
>
> This email is confidential. If you are not the intended recipient, please
> delete it from your system and notify the sender immediately. Any
> unauthorized use, disclosure, dissemination or copying of this email is
> prohibited. Tai Fook Securities Group, its group companies and their content
> providers ("Parties") shall not be responsible for the accuracy or
> completeness of this email or its attachment, if any, which could contain
> virus, be corrupted, destroyed, incomplete, intercepted, lost or arrive
> late.   The Parites do not accept liability for any damage caused by this
> email.
>
>
>