You might be interested in the "it.openutils.log4j.AlternateSMTPAppender"
[1]. It allows for dynamic subjects and more. Note that I am not affiliated
with this project. I just found it to be useful.
[1] http://www.openmindlab.com/lab/tools/openutilslog4j/smtp.html
Jake
On Mon, 23 May 2011 16:18:20 +0200
Zbynek Vavros <zbynek_vav...@cz.ibm.com> wrote:
Hi,
I have a 1 server app and many clients app on different servers.
Obviously I wanted to know from which server the email comes, so I used
this:
log4j.xml
<appender name="email" class="org.apache.log4j.net.SMTPAppender">
<param name="BufferSize" value="512" />
<param name="SMTPHost" value="my_smtp_host" />
<param name="From" value="AutoBot" />
<param name="To" value="my_em...@someserver.com" />
<param name="Subject" value="Agent on [${HOSTNAME}] has encountered
error" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{HH:mm:ss} [%t] %p %C
(%L) %x - %m%n" />
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="error" />
<param name="LevelMax" value="fatal" />
</filter>
</appender>
and since system property has to be setup before configuring log4j, I use
this in my code.
Main class
//create system property to hold server name
System.setProperty("HOSTNAME", InetAddress.getLocalHost
().getCanonicalHostName());
//reconfigure log4j so it picks up HOSTNAME property
DOMConfigurator.configure(getClass().getClassLoader().getResource(
"log4j.xml"));
Then Im receiving emails with subject like this: "Agent on [127.0.0.1] has
encountered error".
So far so good.
And now I have request to include customer name in subject.
I have no problem to include it in stack trace, but since I cannot set
customer name the same way
as I did with IP (there are multiple customers handled by my app so I
cannot just use System.setProperty("CUSTOMER", "SOME NAME")).
I though of solution to set this property when exception is catched and
reconfigure log4j after setting proper customer name into system property.
But I think it is politelly said "ugly".
Can some1 suggest a better way maybe?
Thanks, Zbynek
Kind Regards / Mit
freundlichen Grüßen /
Üdvözlettel / S
pozdravem:
Zbynek VAVROS (Embedded
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