[infra] Use GHA workflow triggers to run pull request labeler workflow

.github/workflows/labeler.yml → .github/workflows/pr_edit_trigger.yml

@@ -15,19 +15,17 @@
 # specific language governing permissions and limitations
 # under the License.
 
-name: "Pull Request Labeler"
-
+name: PR-Edit-Trigger
 on:
-  pull_request_target:
-    types:
-      - opened
+  pull_request:
+    types: [edited]
+    branches:
+      - main
+      - release-*
+
 jobs:
-  triage:
-    if: (github.repository == 'apache/flink-agents')
-    permissions:
-      contents: read
-      pull-requests: write
-      issues: write
+  label:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/labeler@v5
+      - name: "Do nothing. Just triggers corresponding workflow."
+        run: echo

.github/workflows/pr_labeler.js

@@ -0,0 +1,100 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+module.exports = async ({ github, context, core, prNumber, triggerWorkflow }) => {
+  if (!prNumber) {
+    core.warning('No PR number found, skipping labeling.');
+    return;
+  }
+
+  const { data: pr } = await github.rest.pulls.get({
+    owner: context.repo.owner,
+    repo: context.repo.repo,
+    pull_number: prNumber,
+  });
+
+  const isOpenTrigger = triggerWorkflow === 'PR-Open-Trigger';
+  const labels = [];
+
+  // --- Labels only added on PR open (priority/major, fixVersion) ---
+
+  if (isOpenTrigger) {
+    labels.push('priority/major');
+
+    const baseBranch = pr.base.ref;
+    const fixVersionLabelMap = {
+      'main': 'fixVersion/0.3.0',
+      'release-0.2': 'fixVersion/0.2.1',
+      'release-0.1': 'fixVersion/0.1.2',
+    };
+    const fixVersionLabel = fixVersionLabelMap[baseBranch];
+    if (fixVersionLabel) {
+      labels.push(fixVersionLabel);
+    }
+  }
+
+  // --- Documentation labels (evaluated on both open and edit) ---
+
+  const docLabels = ['doc-needed', 'doc-not-needed', 'doc-included'];
+  const docMissingLabel = 'doc-label-missing';
+  const prBody = pr.body || '';
+  const checkedDocLabel = docLabels.find(label => {
+    const pattern = new RegExp(`-\\s*\\[x\\]\\s*\`${label}\``, 'i');
+    return pattern.test(prBody);
+  });
+
+  // Remove all existing doc labels first
+  const { data: existingLabels } = await github.rest.issues.listLabelsOnIssue({
+    owner: context.repo.owner,
+    repo: context.repo.repo,
+    issue_number: prNumber,
+  });
+  const allDocLabels = [...docLabels, docMissingLabel];
+  for (const existingLabel of existingLabels) {
+    if (allDocLabels.includes(existingLabel.name)) {
+      await github.rest.issues.removeLabel({
+        owner: context.repo.owner,
+        repo: context.repo.repo,
+        issue_number: prNumber,
+        name: existingLabel.name,
+      });
+      core.info(`Removed existing doc label '${existingLabel.name}'.`);
+    }
+  }
+
+  if (checkedDocLabel) {
+    labels.push(checkedDocLabel);
+    core.info(`Documentation checkbox checked: '${checkedDocLabel}'.`);
+  } else {
+    labels.push(docMissingLabel);
+    core.info('No documentation checkbox checked, adding doc-label-missing.');
+  }
+
+  // --- Apply all labels ---
+
+  if (labels.length > 0) {
+    await github.rest.issues.addLabels({
+      owner: context.repo.owner,
+      repo: context.repo.repo,
+      issue_number: prNumber,
+      labels: labels,
+    });
+    core.info(`Added labels: ${labels.join(', ')}`);
+  } else {
+    core.info('No labels to add.');
+  }
+};

.github/workflows/pr_labeler.yml

@@ -0,0 +1,58 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+name: "Pull Request Labeler"
+
+on:
+  workflow_run:
+    workflows: [PR-Open-Trigger, PR-Edit-Trigger]
+    types: [requested]
+
+concurrency:
+  group: ${{ github.event.workflow_run.name }}-${{ github.event.workflow_run.head_repository.full_name }}-${{ github.event.workflow_run.head_branch }}
+  cancel-in-progress: true
+
+permissions:
+  checks: write
+  contents: read
+  pull-requests: write
+
+jobs:
+  label:
+    if: github.repository == 'apache/flink-agents'
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Checkout ${{ github.ref }} ( ${{ github.sha }} )"
+        uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+          submodules: recursive
+      - name: "Get information about the original trigger of the run"
+        uses: ./.github/actions/get-workflow-origin
+        id: source-run-info
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          sourceRunId: ${{ github.event.workflow_run.id }}
+      - name: "Add labels to pull request"
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const script = require('./.github/workflows/pr_labeler.js');
+            const prNumber = parseInt('${{ steps.source-run-info.outputs.pullRequestNumber }}');
+            const triggerWorkflow = '${{ github.event.workflow_run.name }}';
+            await script({ github, context, core, prNumber, triggerWorkflow });

.github/labeler.yml → .github/workflows/pr_open_trigger.yml

@@ -15,19 +15,17 @@
 # specific language governing permissions and limitations
 # under the License.
 
-# Add 'priority/major' label to any changes within the entire repository
-priority/major:
-  - changed-files:
-      - any-glob-to-any-file: '**'
+name: PR-Open-Trigger
+on:
+  pull_request:
+    types: [opened]
+    branches:
+      - main
+      - release-*
 
-# Add 'fixVersion/0.3.0' label to any PR that is opened against the `main` branch
-fixVersion/0.3.0:
-  - base-branch: 'main'
-
-# Add 'fixVersion/0.2.1' label to any PR that is opened against the `release-0.2` branch
-fixVersion/0.2.1:
-  - base-branch: 'release-0.2'
-
-# Add 'fixVersion/0.1.1' label to any PR that is opened against the `release-0.1` branch
-fixVersion/0.1.1:
-  - base-branch: 'release-0.1'
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Do nothing. Just triggers corresponding workflow."
+        run: echo

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "docs/themes/book"]
 	path = docs/themes/book
 	url = https://github.com/alex-shpak/hugo-book
+[submodule ".github/actions/get-workflow-origin"]
+	path = .github/actions/get-workflow-origin
+	url = https://github.com/potiuk/get-workflow-origin