Logback encoders are not working with LoggingAppender #1131
Description
Logback encoders are not working with LoggingAppender. Can encoders be used with LoggingAppender for layout/pattern usage?
Environment details
Need to use https://logback.qos.ch/manual/encoders.html with google-cloud-logging-logback, but it doesn't work when I use encoder with google-cloud-logging-logback version 0.130.17-alpha.
Steps to reproduce
- Use LoggingAppender in logback.xml
- Add encoder element to logback.xml.
Code example
Contents of logback.xml: <configuration> <appender name="CLOUD" class="com.google.cloud.logging.logback.LoggingAppender"> <!-- Optional : filter logs at or above a level --> <filter class="ch.qos.logback.classic.filter.ThresholdFilter"> <level>DEBUG</level> </filter> <log>application.log</log> <!-- Optional : default java.log --> <resourceType>gae_app</resourceType> <!-- Optional : default: auto-detected, fallback: global --> <enhancer>com.server.utils.LoggingEnhancerSimple</enhancer> <!-- Optional --> <flushLevel>WARN</flushLevel> <!-- Optional : default ERROR --> <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"> <pattern>%d %-5level [%thread] %logger{0}: %msg%n</pattern> </encoder> </appender> <root level="debug"> <appender-ref ref="CLOUD" /> </root> </configuration> Stack trace
In App Engine Standard Java 17 log I see this error at startup: `ERROR in ch.qos.logback.core.joran.spi.Interpreter@12:16 - no applicable action for [pattern], current ElementPath is [[configuration][appender][encoder][pattern]]` External references such as API reference guides
https://github.com/googleapis/java-logging-logback
See "Usage" section which says encoders can be used with LoggingAppender.