It is not a mailet!
I join the expications that Steve give me(very good explication and I can't
do better).
(after read explications)
Now, I don't limit the log in one mailet(I use it in a lot of mailets use by
the spoolmanager to follow the evolution of mails that arrive on the
server).
To do this, I must call :
try {
// Instantiate the a tracking service
tracking = (Tracking)
compMgr.lookup("org.apache.james.services.Tracking");
} catch (ComponentException cnfe) {
log("Failed to retrieve Tracking component:" +
cnfe.getMessage());
} catch (Exception e) {
log("Failed to retrieve Tracking component:" + e.getMessage());
}}
in each init method of each mailet.
So I search to not do that at each time(do only one time when James start).
In this case, is it possible?
Are this explications more clearly?
Thanks,
-Pierre
-----Message d'origine-----
De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Envoy� : jeudi 27 f�vrier 2003 14:52
� : James Developers List
Objet : Re: User-Log
Pierre -
No problem with the 'English' - just nice to hear from you.
The work you and Steve have done, could you describe for me
what the mailet actually does and how you are tracking a
mail from begining to end ?
Also, can you also describe -
"I initialise this service into every maillet(into the
method initialise() of the maillet)"
- this process too ??
Thanks,
Alan
> Hi,
>
> I try to create a service of User Logging (Keep all the
> path following by mails incoming in James).
> For the moment, I have create (with the help of Steve
> Short) a service Tracking that can : - Follow the
> evolution of a mail in the spoolmanager.
> - Log into a Database (can see
> result with Log5Factor).
>
> My question is : I initialise this service into every
> maillet(into the method initialise() of the maillet).
> Can I initialise only one time this service at start of
> James and only call this service in maillets (only one
> call)? If yes, Where?
>
> Have a nice day,
>
> -Pierre
>
> ps: Sorry for my english , I'm Belgian.
>
>
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Create Tracking service
-----------------------
Some notes and issues:
- I just added a call to the tracking service from within the RemoteDelivery
mailet,
but I have not taken into account the possility of partial deliveries, i.e.
I have
not added appropriate handling for javax.mail.SendFailedException.
- Although the tracking service supports multiple detail levels, the log level
for
'tracking' must be set to INFO or greater for any logging to occur.
- the only difference between minimum and maximum tracking levels is that the
latter
includes the message subject.
- tracking messages and other log messages and errors from the tracking
service are
all contained in one file, tracking.log.
- having used the service interface approach - it would now be easy to create
a service implementation class that logged to a database with no code
changes
required anywhere else - just change the config files. In which case
the maximum
tracking level could store the actual message itself as a blob in the
database.
And now the steps (note lots of lines missed out for brevity).
1. Create a new service interface for tracking, Tracking.java
package org.apache.james.services;
...
public interface Tracking {
/**
* The component role used by components implementing this service
*/
String ROLE = "org.apache.james.services.Tracking";
public static final int TRACKING_OFF = 0;
public static final int TRACKING_MINIMUM = 1;
public static final int TRACKING_MAXIMUM = 2;
public void trackMessage(Collection recipients, Mail mail);
}
2. Create a tracking class that implements the tracking service interface,
LogTracker.java.
package org.apache.james.tracking;
...
public class LogTracker
extends AbstractLogEnabled
implements Configurable, Initializable,
org.apache.james.services.Tracking {
private int trackingLevel = TRACKING_OFF;
public void configure( final Configuration configuration ) { ... }
public void initialize() { ... }
public int getTrackingLevel() { ... }
public void trackMessage(Collection recipients, Mail mail) { ... }
}
3. Create a block info file for the tracking service, LogTracker.xinfo, in same
source directory
as LogTracker.java.
<?xml version="1.0"?>
<blockinfo>
<!-- section to describe block -->
<block>
<version>1.0</version>
</block>
<!-- services that are offered by this block -->
<services>
<service name="org.apache.james.services.Tracking" version="1.0"/>
</services>
</blockinfo>
4. Update James block info, james.xinfo, file to declare new dependency on Tracking
service:
...
<dependency>
<service name="org.apache.james.services.Tracking" version="1.0"/>
</dependency>
...
5. Update James assembly config file to define a LogTracker instance to
satisfy James dependency on a Tracking service:
<assembly>
...
<!-- The James block -->
<block name="James" class="org.apache.james.James" >
...
<provide name="tracking" role="org.apache.james.services.Tracking"/>
</block>
...
</assembly>
6. Update James config file to configure tracking service:
...
<!-- Tracking Service Block -->
<tracking>
<trackingLevel>1</trackingLevel>
</tracking>
...
7. Update James server config file to configure a logger:
...
<categories>
...
<category name="tracking" log-level="INFO">
<log-target id-ref="tracking-target"/>
</category>
</categories>
...
<targets>
...
<file id="tracking-target">
<filename>${app.home}/logs/tracking.log</filename>
<format>%{time:dd/MM/yy HH:mm:ss} %5.5{priority} %{category}:
%{message}\n%{throwable}</format>
<append>true</append>
</file>
</targets>
...
8. Write your mailet to invoke the tracking service. For testing purposes I just
threw it into RemoteDelivery:
Look up the service in the init() method:
try {
// Instantiate the a tracking service
tracking = (Tracking)
compMgr.lookup("org.apache.james.services.Tracking");
} catch (ComponentException cnfe) {
log("Failed to retrieve Tracking component:" + cnfe.getMessage());
} catch (Exception e) {
log("Failed to retrieve Tracking component:" + e.getMessage());
}
And call the tracking service at the appropriate point (right after
transport.sendMessage()
in my case:
// Update tracking service
tracking.trackMessage(recipients, mail);
9. Build James and test.
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