Don't update jmxfetch integrations submodule during build (#9150)

* Remove submodule update as part of build

* add GH action to update submodule

* fetch submodules

* updates with better understanding of submodule issues

Author: randomanderson

.github/workflows/README.md

@@ -130,6 +130,14 @@ _Action:_ Build the Java Client Library and runs [the system tests](https://gith
 
 _Recovery:_ Manually trigger the action on the desired branch.
 
+### update-jmxfetch-submodule [🔗](update-jmxfetch-submodule.yaml)
+
+_Trigger:_ Monthly or manually
+
+_Action:_ Creates a PR updating the git submodule at dd-java-agent/agent-jmxfetch/integrations-core
+
+_Recovery:_ Manually trigger the action again.
+
 ## Maintenance
 
 GitHub actions should be part of the [repository allowed actions to run](https://github.com/DataDog/dd-trace-java/settings/actions).

.github/workflows/update-jmxfetch-submodule.yaml

@@ -0,0 +1,44 @@
+name: Update jmxfetch integrations submodule
+
+on:
+  schedule:
+    - cron: '0 0 1 * *'
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # 4.2.2
+
+      - name: Update Submodule
+        run: |
+          git submodule update --remote -- dd-java-agent/agent-jmxfetch/integrations-core
+      - name: Download ghcommit CLI
+        run: |
+          curl https://github.com/planetscale/ghcommit/releases/download/v0.1.48/ghcommit_linux_amd64 -o /usr/local/bin/ghcommit -L
+          chmod +x /usr/local/bin/ghcommit
+      - name: Pick a branch name
+        id: define-branch
+        run: echo "branch=ci/update-jmxfetch-submodule-$(date +'%Y%m%d')" >> $GITHUB_OUTPUT
+      - name: Create branch
+        run: |
+          git checkout -b ${{ steps.define-branch.outputs.branch }}
+          git push -u origin ${{ steps.define-branch.outputs.branch }} --force
+      - name: Commit and push changes
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+        run: |
+          ghcommit --repository ${{ github.repository }} --branch ${{ steps.define-branch.outputs.branch }} --add dd-java-agent/agent-jmxfetch/integrations-core --message "Update agent-jmxfetch submodule"
+      - name: Create pull request
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          gh pr create --title "Update agent-jmxfetch submodule" \
+            --base master \
+            --head ${{ steps.define-branch.outputs.branch }} \
+            --label "comp: tooling" \
+            --label "type: enhancement" \
+            --label "tag: no release notes" \
+            --body "This PR updates the agent-jmxfetch submodule."

.gitlab-ci.yml

@@ -141,6 +141,8 @@ default:
     CACHE_COMPRESSION_LEVEL: "slowest"
 
     RUNTIME_AVAILABLE_PROCESSORS_OVERRIDE: 4 # Runtime.getRuntime().availableProcessors() returns incorrect or very high values in Kubernetes
+    GIT_SUBMODULE_STRATEGY: normal
+    GIT_SUBMODULE_DEPTH: 1
   cache:
     - key: dependency-$CACHE_TYPE # Dependencies cache
       paths:

dd-java-agent/agent-jmxfetch/build.gradle

@@ -97,7 +97,6 @@ tasks.register('copyMetricConfigs', CopyMetricConfigsTask) {
   description 'Copy metrics.yaml files from integrations-core into resources'
   inputDirectory = file("$projectDir/integrations-core")
   outputDirectory = file("$buildDir/integrations-core-resources")
-  dependsOn 'submodulesUpdate'
 }
 
 processResources {