Zaccheo Bagnati created SOLR-16342:
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Summary: <JsonLayout /> not working
Key: SOLR-16342
URL: https://issues.apache.org/jira/browse/SOLR-16342
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: Docker
Affects Versions: 8.11.2
Reporter: Zaccheo Bagnati
We customized a solr 8.1.2 docker image by adding a custom log4j2 configuration
in order to log in json format.
The custom configuration is simply replacing the <PatternLayout> with
<JsonLayout> in the main log file:
{code:java}
<RollingRandomAccessFile
name="MainLogFile"
fileName="${sys:solr.log.dir}/solr.log"
filePattern="${sys:solr.log.dir}/solr.log.%i" >
<JsonLayout />
<Policies>
<OnStartupTriggeringPolicy />
<SizeBasedTriggeringPolicy size="32 MB"/>
</Policies>
<DefaultRolloverStrategy max="10"/>
</RollingRandomAccessFile> {code}
We then set the LOG4J_PROPS variable point to the custom log4j configuration.
It is not working due to this error:
{code:java}
ERROR Could not create plugin of type class
org.apache.logging.log4j.core.layout.JsonLayout for element JsonLayout:
java.lang.NoClassDefFoundError:
com/fasterxml/jackson/databind/ser/FilterProvider
java.lang.NoClassDefFoundError:
com/fasterxml/jackson/databind/ser/FilterProvider
at
org.apache.logging.log4j.core.layout.JsonLayout.<init>(JsonLayout.java:159)
at
org.apache.logging.log4j.core.layout.JsonLayout.<init>(JsonLayout.java:71)
at
org.apache.logging.log4j.core.layout.JsonLayout$Builder.build(JsonLayout.java:103)
at
org.apache.logging.log4j.core.layout.JsonLayout$Builder.build(JsonLayout.java:79)
at
org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:122)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1120)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1045)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1037)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1037)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:651)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:247)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:293)
at
org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:626)
at
org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:699)
at
org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:716)
at
org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:270)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:155)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:47)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:196)
at
org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:137)
at
org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:55)
at
org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:47)
at
org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:33)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:358)
at org.eclipse.jetty.util.log.Slf4jLog.<init>(Slf4jLog.java:36)
at org.eclipse.jetty.util.log.Slf4jLog.<init>(Slf4jLog.java:30)
at
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at
java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at
java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at org.eclipse.jetty.util.log.Log.initialized(Log.java:158)
at org.eclipse.jetty.util.log.Log.getLogger(Log.java:278)
at org.eclipse.jetty.util.log.Log.getLogger(Log.java:267)
at
org.eclipse.jetty.xml.XmlConfiguration.<clinit>(XmlConfiguration.java:88)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.eclipse.jetty.start.Main.invokeMain(Main.java:218)
at org.eclipse.jetty.start.Main.start(Main.java:491)
at org.eclipse.jetty.start.Main.main(Main.java:77)
Caused by: java.lang.ClassNotFoundException:
com.fasterxml.jackson.databind.ser.FilterProvider
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:476)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 41 more
{code}
It seems that the jackson library is not in the classpath.
As a workaround we symlinked the jackson libraries that exists in the
/opt/solr/server/solr-webapp/webapp/WEB-INF/lib/ directory to
/opt/solr/server/lib/ext/ while building the docker image:
{code:java}
...
RUN ln -s
/opt/solr/server/solr-webapp/webapp/WEB-INF/lib/jackson-core-2.13.3.jar
/opt/solr/server/lib/ext/jackson-core-2.13.3.jar && \
ln -s
/opt/solr/server/solr-webapp/webapp/WEB-INF/lib/jackson-databind-2.13.3.jar
/opt/solr/server/lib/ext/jackson-databind-2.13.3.jar && \
ln -s
/opt/solr/server/solr-webapp/webapp/WEB-INF/lib/jackson-annotations-2.13.3.jar
/opt/solr/server/lib/ext/jackson-annotations-2.13.3.jar
...
{code}
The expected behavior is that it should work "out of the box" since the json
log is also mentioned in the documentation in
https://solr.apache.org/guide/8_11/configuring-logging.html
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