Partition muzzle tasks with the same method as build and tests (#9077)

Author: smola

.gitlab-ci.yml

@@ -392,15 +392,14 @@ muzzle:
   extends: .gradle_build
   needs: [ build_tests ]
   stage: tests
-  parallel: 8
+  parallel:
+    matrix:
+      - CI_SPLIT: ["1/8", "2/8", "3/8", "4/8", "5/8", "6/8", "7/8", "8/8"]
   variables:
     CACHE_TYPE: inst
   script:
     - export SKIP_BUILDSCAN="true"
-    - ./gradlew writeMuzzleTasksToFile $GRADLE_ARGS
-    - sort workspace/build/muzzleTasks > sortedMuzzleTasks
-    - split --number=l/$NORMALIZED_NODE_TOTAL --suffix-length=1 --numeric-suffixes sortedMuzzleTasks muzzleSplit
-    - ./gradlew $(cat muzzleSplit${NORMALIZED_NODE_INDEX} | xargs) $GRADLE_ARGS
+    - ./gradlew :runMuzzle -PtaskPartitionCount=$NORMALIZED_NODE_TOTAL -PtaskPartition=$NORMALIZED_NODE_INDEX $GRADLE_ARGS
   after_script:
     - *cgroup_info
     - source .gitlab/gitlab-utils.sh

build.gradle

@@ -121,17 +121,6 @@ wrapper {
   distributionType = Wrapper.DistributionType.ALL
 }
 
-tasks.register('writeMuzzleTasksToFile') {
-  doLast {
-    def muzzleFile = file("${buildDir}/muzzleTasks")
-    assert muzzleFile.parentFile.mkdirs() || muzzleFile.parentFile.directory
-
-    muzzleFile.text = subprojects.findAll { subproject -> subproject.plugins.hasPlugin('muzzle') }
-    .collect { it.path + ":muzzle" }
-    .join('\n')
-  }
-}
-
 def writeMainVersionFileTask = tasks.register('writeMainVersionFile') {
   def versionFile = file("${rootProject.buildDir}/main.version")
   inputs.property "version", scmVersion.version

gradle/ci_jobs.gradle

@@ -188,3 +188,8 @@ testAggregate("base", [":"], [
   ":dd-java-agent:agent-profiling",
   ":dd-java-agent:agent-debugger"
 ])
+
+
+tasks.register('runMuzzle') {
+  dependsOn subprojects.findAll { p -> p.activePartition && p.plugins.hasPlugin('muzzle') }.collect { p -> p.path + ":muzzle" }
+}