Hi,
I`m writing an appender that sends log messages to RabbitMQ.
The appender extends ch.qos.logback.core.AppenderBase<ILoggingEvent>,
obtains connection to RabbitMQ in start() method, sends a message to RabbitMQ
in append(ILoggingEvent event) and releases that connection in the stop()
method.
The sending part works well but I`ve a problem with logback not calling
appenders` stop() method when all desktop application` threads end or when the
web app is undeployed.
I don`t know if it`s a bug or (more probably) I`m missing something but the end
result is that the stop() method is not being called, so the connection to
RabbitMQ is not released and the desktop application never terminates and web
applications cause memory leaks because of that hanging connection.
For example tomcat reports the following:
org.apache.catalina.loader.WebappClassLoader clearReferencesThreads SEVERE: The
web application [/context_name] appears to have started a thread named [AMQP
Connection 127.0.0.1:5672] but has failed to stop it. This is very likely to
create a memory leak.
I'll be grateful for any suggestions and tips on how to release appender
resources on application end / undeployment.
If it`s not my wrong assumption that logback should call stop() method to
stop/deregister the appender I`ll fill in a JIRA issue.
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