[#LOG4NET-13] Allow SMTPAppender to have replaceable parameters in Subject

Log4net

Allow SMTPAppender to have replaceable parameters in Subject

Created: 01/Mar/05 08:10 AM Updated: 15/Nov/09 04:49 PM

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Component/s:

Appenders

Affects Version/s:

1.2.9

Fix Version/s:

1.2.10

Time Tracking:

Not Specified

Environment:

From sourceforge - 749620 - Jeremy Wiebe - jeropa

Resolution Date:

30/Aug/05 07:44 AM

Description

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It would be helpful to be able to have parameters that
are replaced on a per-log event basis on the Subject
line for the SMTPAppender.

Example:
I have multiple web servers running a .NET web service
and all use log4net. When an error occurs, they use the
SMTPAppender to notify me. It would be very useful to
include the host name of the sender in the subject line
so that I could easily determine which web server had
an error instead of having to look into the email.

In thinking more about this it could either be the
Subject line or the From line that has replacable
parameters. Perhaps even make it so that these
properties can use the <layout> tag.

Jeremy Wiebe - jeropa

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Nicko Cadell added a comment - 01/Mar/05 08:13 AM

As the SmtpAppender sends a list of buffered events it would need to pick one event to use for pattern replacement. The From and Subject params could be changed to PatternLayout fields. Then any PatternLayout strings can be used to generate the From and Subject from the selected event.

This would be a breaking change for apps that programmatically configure.

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Nicko Cadell added a comment - 30/Aug/05 07:44 AM

There is an example appender in the SampleAppendersApp which sends a single event via SMTP email and allows replacable patterns in the email subject line.

See:

examples\net\1.0\Appenders\SampleAppendersApp\cs\src\Appender\SimpleSmtpAppender.cs

Nicko Cadell made changes - 30/Aug/05 07:44 AM

Field	Original Value	New Value
Status	Open [ 1 ]	Resolved [ 5 ]
Resolution		Fixed [ 1 ]
Fix Version/s		1.2.10 [ 11128 ]

Nicko Cadell made changes - 08/Mar/06 12:21 AM

Description	It would be helpful to be able to have parameters that are replaced on a per-log event basis on the Subject line for the SMTPAppender. Example: I have multiple web servers running a .NET web service and all use log4net. When an error occurs, they use the SMTPAppender to notify me. It would be very useful to include the host name of the sender in the subject line so that I could easily determine which web server had an error instead of having to look into the email. In thinking more about this it could either be the Subject line or the From line that has replacable parameters. Perhaps even make it so that these properties can use the <layout> tag. Jeremy Wiebe - jeropa	It would be helpful to be able to have parameters that are replaced on a per-log event basis on the Subject line for the SMTPAppender. Example: I have multiple web servers running a .NET web service and all use log4net. When an error occurs, they use the SMTPAppender to notify me. It would be very useful to include the host name of the sender in the subject line so that I could easily determine which web server had an error instead of having to look into the email. In thinking more about this it could either be the Subject line or the From line that has replacable parameters. Perhaps even make it so that these properties can use the <layout> tag. Jeremy Wiebe - jeropa
Summary	Allow SMTPAppender to have replacable parameters in Subject	Allow SMTPAppender to have replaceable parameters in Subject

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rams.rapo added a comment - 15/Nov/09 04:49 PM

Hi,

I have a similar need in Java application. Can the fix be propagated to log4j implementation for Java.
I'm using log4j 1.2.15 and had no luck passing run time parameters in subject line set by MDC.

<param name="Subject" value="Error from Application. Client IP - [%X{clientIP}], Server IP - [%X{serverIP}]" />