Programming Grails by Burt Beckwith

Author:Burt Beckwith
Language: eng
Format: epub, pdf
Tags: COMPUTERS / Programming Languages / Java
ISBN: 9781449323929
Publisher: O'Reilly Media
Published: 2013-04-23T00:00:00+00:00

log4j = { System.setProperty 'mail.smtp.starttls.enable', 'true' appenders { ... } ... }

You can enable SMTP debugging with SMTPDebug: true in the appender constructor call. You can also set the highest log level that is logged to email by adding:

appender new org.apache.log4j.net.SMTPAppender( ... threshold: org.apache.log4j.Level.ERROR ... )

Use whatever threshold level makes sense for you. It’s a good idea to do this for the SMTPAppender to limit the message volume. Note that the appender queues messages and only sends them when a “triggering event” occurs; this is defined by default as a message at the ERROR level or higher. So, if several messages are logged at lower levels (INFO, WARN, etc.) and one is logged at the ERROR level, one email is sent with all of the messages. You can configure the triggering behavior by implementing the org.apache.log4j.spi.TriggeringEventEvaluator interface (e.g., in src/groovy or src/java) and specifying the class name in the appender constructor call:

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