Split out log4j appender (#4907)

instrumentation/log4j/log4j-2.13.2/library-autoconfigure/build.gradle.kts

@@ -3,8 +3,6 @@ plugins {
 }
 
 dependencies {
-  compileOnly("io.opentelemetry:opentelemetry-sdk-logs")
-
   library("org.apache.logging.log4j:log4j-core:2.13.2")
 
   // Library instrumentation cannot be applied to 2.13.2 due to a bug in Log4J. The agent works
@@ -12,7 +10,4 @@ dependencies {
   testLibrary("org.apache.logging.log4j:log4j-core:2.13.3")
 
   testImplementation(project(":instrumentation:log4j:log4j-2-common:testing"))
-  testImplementation("io.opentelemetry:opentelemetry-sdk-logs")
-
-  testImplementation("org.mockito:mockito-core")
 }

instrumentation/log4j/log4j-2.13.2/library/build.gradle.kts

@@ -0,0 +1,13 @@
+plugins {
+  id("otel.library-instrumentation")
+}
+
+dependencies {
+  compileOnly("io.opentelemetry:opentelemetry-sdk-logs")
+
+  library("org.apache.logging.log4j:log4j-core:2.13.2")
+
+  testImplementation("io.opentelemetry:opentelemetry-sdk-logs")
+
+  testImplementation("org.mockito:mockito-core")
+}

settings.gradle.kts

@@ -266,6 +266,7 @@ include(":instrumentation:liberty:liberty-dispatcher:javaagent")
 include(":instrumentation:log4j:log4j-1.2:javaagent")
 include(":instrumentation:log4j:log4j-2.7:javaagent")
 include(":instrumentation:log4j:log4j-2.13.2:javaagent")
+include(":instrumentation:log4j:log4j-2.13.2:library")
 include(":instrumentation:log4j:log4j-2.13.2:library-autoconfigure")
 include(":instrumentation:log4j:log4j-2-common:testing")
 include(":instrumentation:logback-1.0:javaagent")