Wildfly 8 doesn't work with elastic-apm-agent-0.5.1

Hi I am trying to connect the java-apm-agent to wildfly but notice that wildfly won’t run correctly. If i comment out the -javaagent part wildfly runs normaly.

Caused by: java.lang.NoClassDefFoundError: co/elastic/apm/jdbc/StatementInstrumentation
        at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:266)
        at org.postgresql.jdbc.PgConnection.execSQLQuery(PgConnection.java:455)
        at org.postgresql.jdbc.PgConnection.execSQLQuery(PgConnection.java:449)
        at org.postgresql.jdbc.PgConnection.getTransactionIsolation(PgConnection.java:833)
        at sun.reflect.GeneratedMethodAccessor55.invoke(Unknown Source) [:1.8.0_161]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_161]
        at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_161]
        at org.postgresql.ds.PGPooledConnection$ConnectionHandler.invoke(PGPooledConnection.java:333)
        at com.sun.proxy.$Proxy77.getTransactionIsolation(Unknown Source)
        at sun.reflect.GeneratedMethodAccessor55.invoke(Unknown Source) [:1.8.0_161]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_161]
        at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_161]
        at org.postgresql.xa.PGXAConnection$ConnectionHandler.invoke(PGXAConnection.java:166)
        at com.sun.proxy.$Proxy77.getTransactionIsolation(Unknown Source)
        at org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnection.<init>(BaseWrapperManagedConnection.java:197)
        at org.jboss.jca.adapters.jdbc.xa.XAManagedConnection.<init>(XAManagedConnection.java:68)
        at org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.newXAManagedConnection(XAManagedConnectionFactory.java:523)
        at org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.getXAManagedConnection(XAManagedConnectionFactory.java:496)

standalone.conf

JBOSS_LOG_MANAGER_LIB="$(echo $JBOSS_HOME/modules/system/layers/base/org/jboss/logmanager/main/jboss-logmanager-*.jar)" # resolve logmanager jar
JAVA_OPTS="$JAVA_OPTS -Xbootclasspath/p:$JBOSS_LOG_MANAGER_LIB"
JAVA_OPTS="$JAVA_OPTS -Djboss.modules.system.pkgs=org.jboss.byteman,org.jboss.logmanager"
JAVA_OPTS="$JAVA_OPTS -Djava.util.logging.manager=org.jboss.logmanager.LogManager"


JAVA_OPTS="$JAVA_OPTS -Delastic.apm.service_name=lnk-timetable-wf-b-f11"
JAVA_OPTS="$JAVA_OPTS -Delastic.apm.application_packages=se.linkon"
JAVA_OPTS="$JAVA_OPTS -Delastic.apm.server_url=http://192.168.72.1:8300"

JAVA_OPTS="$JAVA_OPTS -Xdebug -Xrunjdwp:transport=dt_socket,address=10.0.2.15:9090,server=y,suspend=n"
JAVA_OPTS="$JAVA_OPTS -javaagent:/opt/monitoring/elastic-apm-agent-0.5.1.jar"

Wildfly 8 elastic-apm-agent-0.5.1.jar jre-1.8.0-openjdk

/Regards Fredrik

[felixbarny]

WildFly now works out-of-the-box without any configuration changes apart from adding the -javaagent flag 🙂

[KyongSik-Yoon]

@lk95jofr This problem related with OSGI class loading. You should configure specific setting to standalone.conf or domain.conf for install java agent. Maybe you can find parts below.

if [ "x$JBOSS_MODULES_SYSTEM_PKGS" = "x" ]; then
   JBOSS_MODULES_SYSTEM_PKGS="org.jboss.byteman"
fi

Try attach elastic package to there as like JBOSS_MODULES_SYSTEM_PKGS="org.jboss.byteman,co.elastic"

So WildFly will load all class of co.elastic package ignoring normal OSGI delegation.