Log4J appender which can email out logs (usually errors) to a specified email address. Configurable to filter out some *known* errors so that they are not emailed, or send them to different users.
The SMTPAppender contained within this library is a copy of the original log4j SMTPAppender, with additional enhancements, including the following. Note that the src/test/resources/log4j.xml file provides an example with documentation to get you started.
- flood protection
- there are two configuration parameters to determine the maximum number of messages that can occur within a specific time frame.
- a configurable message is sent out when flood protection is activated, and all mail logging stops until the frequency of messages drops below the configured values.
- the ability to filter log messages based on regular expressions. Filtering can be done in 2 ways
- filter to exclude log messages which match
- filter to send log messages to a particular user, or group of users.
- filter to change the prefixed messages at the top of the email. For example, if it's a known bug, putting a bug URL in the email message may be useful. With just a glance, the recipient will know it's an existing problem.
- hooking the JVM exit, so that any unsent messages are actually sent. There's a bug in the existing log4j library, which will not actually send emails if the JVM is shutdown; it only sends them when log4j is shutdown.
- Replaceable variables for subject, to, and message elements of the filter-config.xml
<dependency>
<groupId>com.github.trentonadams</groupid>
<artifactId>au-log4j</artifactid>
<version>1.0.2</version>
<scope>compile</scope>
</dependency>