Re: using of system properties in subject of SMTPAppender
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
Development image moved
to file:
pic20342.gif)
Delivery Centre 616 00, Brno
Central Europe Technicka 21
Brno SITE Czech Republic
(Embedded image moved to
file: pic17964.gif)Phone: 420-53341- x6283
Mobile:
E-mail: zbynek_vav...@cz.ibm.com
IBM Global Services
Delivery Center Czech
Republic, s.r.o.
Registered address:
Brno, Technicka 2995/21,
Zip code: 61600, Company
ID: 26244535
Entered in the
Commercial Register
maintained by the
Regional Court in Brno
(Part C, Entry 39922)
IBM Global Services
Delivery Center
RE: [SCL-3] using of system properties in subject of SMTPAppender
Hi Heri,
thanks a lot for this advice but if I am correct I can use %X{CUSTOMER}
only in PatternLayout.
Then I need to create my own implementation of SMTPAppender and this is
what i wanted to avoid.
Any chance it can be done without custome implementation?
Thx
Kind Regards / Mit
freundlichen Grüßen /
Üdvözlettel / S
pozdravem:
Zbynek VAVROS (Embedded
Development image moved
to file:
pic16556.gif)
Delivery Centre 616 00, Brno
Central Europe Technicka 21
Brno SITE Czech Republic
(Embedded image moved to
file: pic29569.gif)Phone: 420-53341- x6283
Mobile:
E-mail: zbynek_vav...@cz.ibm.com
IBM Global Services
Delivery Center Czech
Republic, s.r.o.
Registered address:
Brno, Technicka 2995/21,
Zip code: 61600, Company
ID: 26244535
Entered in the
Commercial Register
maintained by the
Regional Court in Brno
(Part C, Entry 39922)
IBM Global Services
Delivery Center Czech
Republic, s.r.o.
Sídlo: Brno, Technická
2995/21, PSČ 61600 IČ:
26244535
Zapsaná v obchodním
rejstříku, vedeném
Krajským soudem v Brně
oddíl C, vlozka 39922
|
| From: |
|
--|
|Bender Heri hben...@ergonomics.ch
|
--|
|
| To:|
|
--|
|'Log4J Users List' log4j-user@logging.apache.org
|
--|
|
| Date: |
|
--|
|05/24/2011 01:18 PM
RE: [SCL-3] using of system properties in subject of SMTPAppender
Hi, thx for advice but since default SMTPAppender does not allow usage of PatternLayout in subject I needed to implement this by extedning usual SMTPAppender. Now it works just fine :) Kind Regards / Mit freundlichen Grüßen / Üdvözlettel / S pozdravem: Zbynek VAVROS (Embedded Development image moved to file: pic1.gif) Delivery Centre 616 00, Brno Central Europe Technicka 21 Brno SITE Czech Republic (Embedded image moved to file: pic01271.gif)Phone: 420-53341- x6283 Mobile: E-mail: zbynek_vav...@cz.ibm.com IBM Global Services Delivery Center Czech Republic, s.r.o. Registered address: Brno, Technicka 2995/21, Zip code: 61600, Company ID: 26244535 Entered in the Commercial Register maintained by the Regional Court in Brno (Part C, Entry 39922) IBM Global Services Delivery Center Czech Republic, s.r.o. Sídlo: Brno, Technická 2995/21, PSČ 61600 IČ: 26244535 Zapsaná v obchodním rejstříku, vedeném Krajským soudem v Brně oddíl C, vlozka 39922 | | From: | | --| |Bender Heri hben...@ergonomics.ch | --| | | To:| | --| |'Log4J Users List' log4j-user@logging.apache.org | --| | | Date: | | --| |05/24/2011 01:18 PM |
RE: [SCL-3] using of system properties in subject of SMTPAppender
Usually a customer is served within one separate thread, isn't it? If yes, you
can use the MDC (mapped diagnostic context). You put a value into it:
MDC.put(CUSTOMER, SOME NAME) at the begin of the session (probably in a
servlet listener) and reference this value with the layout pattern
%X{CUSTOMER}.
Do not forget to remove the value when session terminates!
Heri
-Original Message-
From: Zbynek Vavros [mailto:zbynek_vav...@cz.ibm.com]
Sent: Monday, May 23, 2011 4:18 PM
To: log4j-user@logging.apache.org
Subject: [SCL-3] using of system properties in subject of SMTPAppender
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
Development
image moved
to file:
pic20342.gif)
Delivery Centre 616 00, Brno
Central Europe Technicka 21
Brno SITE Czech Republic
(Embedded image moved to
file: pic17964.gif)Phone: 420-53341- x6283
Mobile:
E-mail: zbynek_vav...@cz.ibm.com
IBM Global Services
Delivery Center Czech
Republic, s.r.o.
Registered address:
Brno, Technicka 2995/21,
Zip code: 61600, Company
ID: 26244535
Entered in the
Commercial Register
Re: using of system properties in subject of SMTPAppender
If it can be in the body of the email, then there are many ways that you could
customize the rendering of the message. Since it appears to be a very low
frequency occurrence, you could do something like:
if(logger.isErrorEnabled())
{
string msg = Client + clienName + encountered unexpected exception;.
logger.error(msg, e);
}
If you really want it in the subject, you will likely need to extend
SMTPAppender. You could create an object that represents the combination of
the server context and the message (or just the context if you don't need the
message parameter)
logger.error(context, e);
or
if(logger.isErrorEnabled())
{
logger.error(new MyCustomObject(context, msg), e);
}
The toString method of the first parameter will be used for the message. Your
customized SMTPAppender can recognize the message parameter object and extract
whatever information you need for the subject line.
On May 23, 2011, at 9:18 AM, Zbynek Vavros 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
Development image moved
to file:
pic20342.gif)
Delivery Centre 616 00, Brno
Central Europe Technicka 21
Brno SITE Czech Republic
(Embedded image moved to
file: pic17964.gif)Phone: 420-53341- x6283
Mobile:
E-mail: zbynek_vav...@cz.ibm.com
IBM Global Services
Delivery Center Czech
Republic, s.r.o.
Registered address:
Brno, Technicka 2995/21,
Zip code: 61600, Company
ID: 26244535
Entered in the
Commercial Register
maintained by the
Regional Court in Brno
(Part C, Entry 39922)
IBM Global Services
Delivery Center Czech
Republic, s.r.o.
using of system properties in subject of SMTPAppender
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
Development image moved
to file:
pic20342.gif)
Delivery Centre 616 00, Brno
Central Europe Technicka 21
Brno SITE Czech Republic
(Embedded image moved to
file: pic17964.gif)Phone: 420-53341- x6283
Mobile:
E-mail: zbynek_vav...@cz.ibm.com
IBM Global Services
Delivery Center Czech
Republic, s.r.o.
Registered address:
Brno, Technicka 2995/21,
Zip code: 61600, Company
ID: 26244535
Entered in the
Commercial Register
maintained by the
Regional Court in Brno
(Part C, Entry 39922)
IBM Global Services
Delivery Center Czech
Republic, s.r.o.
Sídlo: Brno, Technická
2995/21, PSČ 61600 IČ:
26244535
Zapsaná v obchodním
rejstříku, vedeném
