在Heroku上播放2.2生产模式

Question

I've deployed a Play 2.2 application on Heroku. Currently, the messages written to my loggers in my app are not appearing in the Heroku log, as the Play app is (apparently) writing to something other than stdout.

In development mode, my loggers are working fine (they write to stdout). I would like my application to write its logging to stdout in production mode as well, so it ends up in Heroku's application log.

Is there a change I have to make in the configuration of Play to make this happen?

Answer 1

I created a file called conf/application-logger.xml in the application. No other changes the application.conf were needed, and now the logging is working correctly on Heroku.

http://www.playframework.com/documentation/2.2.x/SettingsLogger has these instructions. However, my configuration differs from the example on that page in that I removed the appender to FILE and kept only the appender to STDOUT appender.

<configuration>

  <conversionRule conversionWord="coloredLevel" converterClass="play.api.Logger$ColoredLevel" />

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
   <encoder>
      <pattern>%coloredLevel %logger{15} - %message%n%xException{5}</pattern>
    </encoder>
  </appender>

  <logger name="play" level="INFO" />
  <logger name="application" level="INFO" />
  <logger name="mycustomlogger" level="INFO" />

  <!-- Off these ones as they are annoying, and anyway we manage configuration ourself -->
  <logger name="com.avaje.ebean.config.PropertyMapLoader" level="OFF" />
  <logger name="com.avaje.ebeaninternal.server.core.XmlConfigLoader" level="OFF" />
  <logger name="com.avaje.ebeaninternal.server.lib.BackgroundThread" level="OFF" />
  <logger name="com.gargoylesoftware.htmlunit.javascript" level="OFF" />

  <root level="ERROR">
    <appender-ref ref="STDOUT" />
  </root>

</configuration>

Answer 2

我已经开始使用Papertrail Heroku附加组件https://addons.heroku.com/papertrail ，到目前为止对它非常满意。