setup project

.github/scripts/update-sdk-version.sh

@@ -0,0 +1,7 @@
+#!/bin/bash -e
+# script to update the OpenTelemetry SDK version
+
+# version, which should be used for the SDK
+version=$1
+
+sed -Ei "s/(opentelemetrySdk *: )\"[^\"]*\"/\1\"$version\"/" build.gradle

.github/scripts/update-version.sh

@@ -0,0 +1,18 @@
+#!/bin/bash -e
+# script to update the OpenTelemetry Java agent version
+
+
+# version, which should be used for the java agent
+version=$1
+
+if [[ $version == *-SNAPSHOT ]]; then
+  alpha_version=${version//-SNAPSHOT/-alpha-SNAPSHOT}
+else
+  alpha_version=${version}-alpha
+fi
+
+sed -Ei "s/(opentelemetryJavaagent *: )\"[^\"]*\"/\1\"$version\"/" build.gradle
+sed -Ei "s/(opentelemetryJavaagentAlpha *: )\"[^\"]*\"/\1\"$alpha_version\"/" build.gradle
+
+sed -Ei "s/(io.opentelemetry.instrumentation.muzzle-generation\" version )\"[^\"]*\"/\1\"$alpha_version\"/" build.gradle
+sed -Ei "s/(io.opentelemetry.instrumentation.muzzle-check\" version )\"[^\"]*\"/\1\"$alpha_version\"/" build.gradle

.github/workflows/ci-feature.yml

@@ -2,10 +2,14 @@ name: Feature Branch Continous Integration
 
 on:
   push:
-    branches: [ "feature/**" ]
-
+    branches:
+      - "feature/**"
+      - master
+  pull_request:
+
 jobs:
   build-and-test:
+    name: "Build and test extension"
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -27,19 +31,17 @@ jobs:
 
     - name: Build
       run: ./gradlew extendAgent
-      
+
     - name: Upload build artifacts
       uses: actions/upload-artifact@v4
       with:
         name: Package
         path: build/libs
-
-  dependency-submission:
 
+  dependency-submission:
     runs-on: ubuntu-latest
     permissions:
       contents: write
-
     steps:
     - uses: actions/checkout@v4
     - name: Set up JDK 17

README.md

@@ -1,35 +1,8 @@
-# Extension
-This extension is used as a showcase for VHV in order to demonstrate that we can move inspectit's
-agent logic to opentelemetry agent enhanced via an extension.
-
-Use `./gradlew extendAgent` (no tests) or `./gradlew build` to build an agent jar with your current
+# inspectIT Gepard Extension
+Extension for the OpenTelemetry Java agent.
+Use `./gradlew extendedAgent` (no tests) or `./gradlew build` to build an agent jar with your current
 changes.
 
-## TODOs / next steps
-* otel agent wants to export spans.
-  * Find out where otel wants to report spans to. Jaeger? Something else?
-  * Do we want to use that? Do we want to disable it?
-  * Is it easy to change it to an url provided by the config server?
-* this extension sends an additional http header named `X-OCELOT-AGENT-TYPE` to the config server. Use it over there to display a different icon in the config server's UI
-* tests do not work
-  * Probably not that important
-
-# Documentation
-This extension calls the agent configuration endpoint of the configuration server. For your local
-installation this is typically available at http://localhost:8090/v1/api/agent/configuration. The
-endpoint of the server is defined in class `rocks.inspectit.ocelot.rest.agent.AgentController` of inspectit-ocelot.
-
-Calling that endpoint serves the following purposes:
-* First call registers Agent with configuration server
-  * uses query parameter `service` to display something meaningful in the UI. Currently, hardcoded to `otel-extension`
-* Regularly polls configuration server to fetch potentially updated configurations
-* Transmits by each call the health state of the agent
-* Send an `X-OCELOT-AGENT-TYPE` to distinguish inspectit-ocelot-agent and this agent
-
-Currently, you can influence the target url via SystemProperty named `inspectit.config.http.url`.
-
-Polling of configuration is handled in classes `ConfigurationPolling` and `HttpConfiguration`.
-
 # Original Readme
 The following is the original content from which this work is derived.
 Source: https://github.com/open-telemetry/opentelemetry-java-instrumentation/tree/main/examples/extension

build.gradle

@@ -11,35 +11,35 @@ plugins {
     See https://imperceptiblethoughts.com/shadow/ for more details about Shadow plugin.
      */
     id "com.github.johnrengelman.shadow" version "8.1.1"
-    id "com.diffplug.spotless" version "6.17.0"
+    id "com.diffplug.spotless" version "6.25.0"
 
-    id "io.opentelemetry.instrumentation.muzzle-generation" version "1.31.0-alpha"
-    id "io.opentelemetry.instrumentation.muzzle-check" version "1.31.0-alpha"
+    id "io.opentelemetry.instrumentation.muzzle-generation" version "2.5.0-alpha"
+    id "io.opentelemetry.instrumentation.muzzle-check" version "2.5.0-alpha"
 
-    id "pl.allegro.tech.build.axion-release" version "1.11.0"
+    id "pl.allegro.tech.build.axion-release" version "1.17.2"
 
 }
 
 group 'rocks.inspectit.gepard.agent'
-version = scmVersion.version
+version = "0.0.1-SNAPSHOT"
 
 sourceCompatibility = "17"
 targetCompatibility = "17"
 
 ext {
     versions = [
             // this line is managed by .github/scripts/update-sdk-version.sh
-            opentelemetrySdk           : "1.38.0",
+            opentelemetrySdk           : "1.39.0",
 
             // these lines are managed by .github/scripts/update-version.sh
-            opentelemetryJavaagent     : "2.3.0",
-            opentelemetryJavaagentAlpha: "2.3.0-alpha",
+            opentelemetryJavaagent     : "2.5.0",
+            opentelemetryJavaagentAlpha: "2.5.0-alpha",
 
-            junit                      : "5.9.2"
+            junit                      : "5.10.2"
     ]
 
     deps = [
-            autoservice: dependencies.create(group: 'com.google.auto.service', name: 'auto-service', version: '1.0.1')
+            autoservice: dependencies.create(group: 'com.google.auto.service', name: 'auto-service', version: '1.1.1')
     ]
 }
 
@@ -73,13 +73,11 @@ dependencies {
     // these serve as a test of the instrumentation boms
     implementation(platform("io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom:${versions.opentelemetryJavaagent}"))
     implementation(platform("io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha:${versions.opentelemetryJavaagentAlpha}"))
-    implementation("org.apache.httpcomponents:httpclient:4.5.14")
-    implementation("commons-codec:commons-codec:1.15")
-    implementation("ch.qos.logback:logback-classic:1.3.6")
-    implementation("org.slf4j:jcl-over-slf4j:2.0.4")
 
-    // For instrumentation, same version as OpenTelemetry
-    implementation("net.bytebuddy:byte-buddy:1.14.12")
+    // inspectit-gepard dependencies
+    implementation("net.bytebuddy:byte-buddy:1.14.15")
+    implementation("ch.qos.logback:logback-classic:1.5.6")
+    implementation("org.slf4j:jcl-over-slf4j:2.0.13")
 
     /*
     Interfaces and SPIs that we implement. We use `compileOnly` dependency because during
@@ -90,35 +88,35 @@ dependencies {
     compileOnly("io.opentelemetry.javaagent:opentelemetry-javaagent-extension-api")
     compileOnly("io.opentelemetry.javaagent:opentelemetry-javaagent-tooling")
     compileOnly("io.opentelemetry.javaagent:opentelemetry-javaagent-bootstrap")
-    //Provides @AutoService annotation that makes registration of our SPI implementations much easier
+
+    // Provides @AutoService annotation that makes registration of our SPI implementations much easier
     compileOnly deps.autoservice
     annotationProcessor deps.autoservice
 
-
-    //All dependencies below are only for tests
-    testImplementation("org.testcontainers:testcontainers:1.17.6")
-    testImplementation("com.fasterxml.jackson.core:jackson-databind:2.14.2")
-    testImplementation("com.google.protobuf:protobuf-java-util:3.22.2")
-    testImplementation("com.squareup.okhttp3:okhttp:4.10.0")
+    // All dependencies below are only for tests
+    testImplementation("org.testcontainers:testcontainers:1.19.8")
+    testImplementation("com.fasterxml.jackson.core:jackson-databind:2.17.1")
+    testImplementation("com.google.protobuf:protobuf-java-util:3.25.3")
+    testImplementation("com.squareup.okhttp3:okhttp:4.12.0")
     testImplementation("io.opentelemetry:opentelemetry-api")
-    testImplementation("io.opentelemetry.proto:opentelemetry-proto:0.19.0-alpha")
+    testImplementation("io.opentelemetry.proto:opentelemetry-proto:1.3.1-alpha")
 
     testImplementation("org.junit.jupiter:junit-jupiter-api:${versions.junit}")
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:${versions.junit}")
-    testRuntimeOnly("ch.qos.logback:logback-classic:1.4.6")
+    testRuntimeOnly('ch.qos.logback:logback-classic:1.5.6')
 
-    //Otel Java instrumentation that we use and extend during integration tests
+    // Otel Java instrumentation that we use and extend during integration tests
     otel("io.opentelemetry.javaagent:opentelemetry-javaagent:${versions.opentelemetryJavaagent}")
 
-    //TODO remove when start using io.opentelemetry.instrumentation.javaagent-instrumentation plugin
+    // TODO remove when start using io.opentelemetry.instrumentation.javaagent-instrumentation plugin
     add("codegen", "io.opentelemetry.javaagent:opentelemetry-javaagent-tooling:${versions.opentelemetryJavaagentAlpha}")
     add("muzzleBootstrap", "io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations-support:${versions.opentelemetryJavaagentAlpha}")
     add("muzzleTooling", "io.opentelemetry.javaagent:opentelemetry-javaagent-extension-api:${versions.opentelemetryJavaagentAlpha}")
     add("muzzleTooling", "io.opentelemetry.javaagent:opentelemetry-javaagent-tooling:${versions.opentelemetryJavaagentAlpha}")
 }
 
-//Produces a copy of upstream javaagent with this extension jar included inside it
-//The location of extension directory inside agent jar is hard-coded in the agent source code
+// Produces a copy of upstream javaagent with this extension jar included inside it
+// The location of extension directory inside agent jar is hard-coded in the agent source code
 tasks.register('extendedAgent', Jar) {
     dependsOn(configurations.otel)
     archiveFileName = "opentelemetry-javaagent.jar"
@@ -127,12 +125,12 @@ tasks.register('extendedAgent', Jar) {
         into "extensions"
     }
 
-    //Preserve MANIFEST.MF file from the upstream javaagent
+    // Preserve MANIFEST.MF file from the upstream javaagent
     doFirst {
         manifest.from(
-                zipTree(configurations.otel.singleFile).matching {
-                    include 'META-INF/MANIFEST.MF'
-                }.singleFile
+            zipTree(configurations.otel.singleFile).matching {
+                include 'META-INF/MANIFEST.MF'
+            }.singleFile
         )
     }
 }
@@ -150,7 +148,7 @@ tasks {
     }
 
     compileJava {
-        options.release.set(8)
+        options.release.set(17)
     }
 
     assemble.dependsOn(shadowJar)

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip
 networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

src/main/java/rocks/inspectit/gepard/agent/InspectitAgentExtension.java

@@ -0,0 +1,27 @@
+package rocks.inspectit.gepard.agent;
+
+import com.google.auto.service.AutoService;
+import io.opentelemetry.javaagent.tooling.AgentExtension;
+import io.opentelemetry.sdk.autoconfigure.spi.ConfigProperties;
+import net.bytebuddy.agent.builder.AgentBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@SuppressWarnings("unused")
+@AutoService(AgentExtension.class)
+public class InspectitAgentExtension implements AgentExtension {
+
+  private static final Logger log = LoggerFactory.getLogger(InspectitAgentExtension.class);
+
+  @Override
+  public AgentBuilder extend(AgentBuilder agentBuilder, ConfigProperties config) {
+    log.info("Starting inspectIT Gepard agent extension ...");
+
+    return agentBuilder;
+  }
+
+  @Override
+  public String extensionName() {
+    return "inspectit-gepard";
+  }
+}