Migrate jacoco.gradle to plugin (#3330)

buildSrc/src/main/kotlin/otel.jacoco-conventions.gradle.kts

@@ -0,0 +1,19 @@
+plugins {
+  jacoco
+}
+
+jacoco {
+  toolVersion = "0.8.6"
+}
+
+tasks {
+  named<JacocoReport>("jacocoTestReport") {
+    dependsOn("test")
+
+    reports {
+      xml.isEnabled = true
+      csv.isEnabled = false
+      html.destination = file("${buildDir}/reports/jacoco/")
+    }
+  }
+}

buildSrc/src/main/kotlin/otel.java-conventions.gradle.kts

@@ -27,17 +27,6 @@ afterEvaluate {
 // Version to use to compile code and run tests.
 val DEFAULT_JAVA_VERSION = JavaVersion.VERSION_11
 
-val applyCodeCoverage = !project.path.run {
-  startsWith(":smoke-tests") ||
-    startsWith(":benchmark") ||
-    startsWith(":instrumentation") ||
-    startsWith(":testing-common")
-}
-
-if (applyCodeCoverage) {
-  apply(from = "${rootDir}/gradle/jacoco.gradle")
-}
-
 java {
   toolchain {
     languageVersion.set(otelJava.minJavaVersionSupported.map { JavaLanguageVersion.of(Math.max(it.majorVersion.toInt(), DEFAULT_JAVA_VERSION.majorVersion.toInt())) })

buildSrc/src/main/kotlin/otel.library-instrumentation.gradle.kts

@@ -1,5 +1,6 @@
 plugins {
   id("otel.java-conventions")
+  id("otel.jacoco-conventions")
   id("otel.publish-conventions")
   id("otel.instrumentation-conventions")
 }

gradle/jacoco.gradle

@@ -1,14 +0,0 @@
-apply plugin: "jacoco"
-
-jacoco {
-  toolVersion = "0.8.6"
-}
-
-tasks.named('jacocoTestReport').configure {
-  dependsOn('test')
-  reports {
-    xml.enabled true
-    csv.enabled false
-    html.destination file("${buildDir}/reports/jacoco/")
-  }
-}

instrumentation-api/instrumentation-api.gradle

@@ -5,6 +5,7 @@ plugins {
 group = 'io.opentelemetry.instrumentation'
 
 apply plugin: "otel.java-conventions"
+apply plugin: "otel.jacoco-conventions"
 apply plugin: "otel.publish-conventions"
 
 def jflexTargetDir = file"${project.buildDir}/generated/jflex/sql"

javaagent-api/javaagent-api.gradle

@@ -1,6 +1,7 @@
 group = 'io.opentelemetry.javaagent'
 
 apply plugin: "otel.java-conventions"
+apply plugin: "otel.jacoco-conventions"
 apply plugin: "otel.publish-conventions"
 
 dependencies {