io.opentelemetry.javaagent.instrumentation.logback.mdc.v1_0.LoggerInstrumentation Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of opentelemetry-javaagent-logback-mdc-1.0 Show documentation
Show all versions of opentelemetry-javaagent-logback-mdc-1.0 Show documentation
Instrumentation of Java libraries using OpenTelemetry.
/*
* Copyright The OpenTelemetry Authors
* SPDX-License-Identifier: Apache-2.0
*/
package io.opentelemetry.javaagent.instrumentation.logback.mdc.v1_0;
import static net.bytebuddy.matcher.ElementMatchers.isMethod;
import static net.bytebuddy.matcher.ElementMatchers.isPublic;
import static net.bytebuddy.matcher.ElementMatchers.named;
import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
import ch.qos.logback.classic.spi.ILoggingEvent;
import io.opentelemetry.context.Context;
import io.opentelemetry.instrumentation.api.util.VirtualField;
import io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge;
import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
import net.bytebuddy.asm.Advice;
import net.bytebuddy.description.type.TypeDescription;
import net.bytebuddy.matcher.ElementMatcher;
public class LoggerInstrumentation implements TypeInstrumentation {
@Override
public ElementMatcher typeMatcher() {
return named("ch.qos.logback.classic.Logger");
}
@Override
public void transform(TypeTransformer transformer) {
transformer.applyAdviceToMethod(
isMethod()
.and(isPublic())
.and(named("callAppenders"))
.and(takesArguments(1))
.and(takesArgument(0, named("ch.qos.logback.classic.spi.ILoggingEvent"))),
LoggerInstrumentation.class.getName() + "$CallAppendersAdvice");
}
@SuppressWarnings("unused")
public static class CallAppendersAdvice {
@Advice.OnMethodEnter
public static void onEnter(@Advice.Argument(value = 0, readOnly = false) ILoggingEvent event) {
VirtualField.find(ILoggingEvent.class, Context.class)
.set(event, Java8BytecodeBridge.currentContext());
}
}
}