added the labeler github action

.github/labeler.yml

@@ -0,0 +1,23 @@
+"component/server":
+  - "fdbserver/**/*"
+
+"component/client":
+  - "fdbclient/**/*"
+
+"component/flow":
+  - "flow/**/*"
+
+"component/rpc":
+  - "fdbrpc/**/*"
+
+"component/test":
+  - "tests/**/*"
+  - "fdbserver/workloads/**/*"
+  - "bindings/c/test/**/*"
+
+"component/bindings":
+  - "bindings/**/*"
+
+"component/documentation":
+  - "documentation/**/*"
+  - "**/*.md"

.github/labels.yml

@@ -0,0 +1,47 @@
+- name: "size/XS"
+  color: "3cbf46"
+  description: "XS Pull Request (<10 lines change)"
+
+- name: "size/S"
+  color: "5cd667"
+  description: "S Pull Request (10-49 lines change)"
+
+- name: "size/M"
+  color: "ffc107"
+  description: "M Pull Request (50-199 lines change)"
+
+- name: "size/L"
+  color: "fd7e14"
+  description: "L Pull Request (200-499 lines change)"
+
+- name: "size/XL"
+  color: "dc3545"
+  description: "XL Pull Request (>=500 lines change)"
+
+- name: "component/server"
+  color: "007bff"
+  description: "Server-side modifications (fdbserver)"
+
+- name: "component/client"
+  color: "17a2b8"
+  description: "Client-side modifications (fdbclient)"
+
+- name: "component/flow"
+  color: "6f42c1"
+  description: "Flow asynchronous framework changes"
+
+- name: "component/rpc"
+  color: "e83e8c"
+  description: "RPC / network protocol changes"
+
+- name: "component/test"
+  color: "20c997"
+  description: "Tests and simulation workload changes"
+
+- name: "component/bindings"
+  color: "6610f2"
+  description: "Language binding changes"
+
+- name: "component/documentation"
+  color: "6c757d"
+  description: "Documentation changes"

.github/workflows/label-sync.yml

@@ -0,0 +1,26 @@
+name: "Label Sync"
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - '.github/labels.yml'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Sync GitHub Labels
+        uses: crazy-max/ghaction-github-labeler@v5
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          yaml-file: .github/labels.yml
+          skip-delete: false # Set to true if you don't want to delete manually created labels that are missing from labels.yml

.github/workflows/labeler.yml

@@ -0,0 +1,112 @@
+name: PR Label Analysis
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze PR for labeling
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Save PR metadata
+        env:
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+        run: |
+          mkdir -p ./pr-metadata
+          echo "${PR_NUMBER}" > ./pr-metadata/pr-number.txt
+
+      - name: Upload PR metadata as artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: pr-metadata-${{ github.event.pull_request.number }}
+          path: pr-metadata/
+          retention-days: 1
+
+---
+
+name: PR Label Apply
+
+on:
+  workflow_run:
+    workflows: ["PR Label Analysis"]
+    types:
+      - completed
+
+permissions:
+  contents: read
+
+jobs:
+  apply-labels:
+    name: Apply labels to PR
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Download PR metadata artifact
+        uses: actions/download-artifact@v4
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          run-id: ${{ github.event.workflow_run.id }}
+          pattern: pr-metadata-*
+          merge-multiple: true
+
+      - name: Read PR number
+        id: pr-number
+        run: |
+          PR_NUMBER=$(cat "pr-number.txt")
+          echo "number=${PR_NUMBER}" >> $GITHUB_OUTPUT
+          echo "PR Number: ${PR_NUMBER}"
+
+      - name: Apply Path-Based Labels
+        uses: actions/labeler@v5
+        with:
+          pr-number: ${{ steps.pr-number.outputs.number }}
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          configuration-path: .github/labeler.yml
+          sync-labels: true
+
+      - name: Calculate and Apply Size Label
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR_NUMBER: ${{ steps.pr-number.outputs.number }}
+        run: |
+          PR_DATA=$(curl -s -H "Authorization: token $GH_TOKEN" \
+            https://api.github.com/repos/${{ github.repository }}/pulls/$PR_NUMBER)
+
+          ADDITIONS=$(echo "$PR_DATA" | jq '.additions')
+          DELETIONS=$(echo "$PR_DATA" | jq '.deletions')
+          TOTAL=$((ADDITIONS + DELETIONS))
+
+          if [ $TOTAL -lt 10 ]; then
+            SIZE_LABEL="size/XS"
+          elif [ $TOTAL -lt 50 ]; then
+            SIZE_LABEL="size/S"
+          elif [ $TOTAL -lt 200 ]; then
+            SIZE_LABEL="size/M"
+          elif [ $TOTAL -lt 500 ]; then
+            SIZE_LABEL="size/L"
+          else
+            SIZE_LABEL="size/XL"
+          fi
+
+          CURRENT_LABELS=$(echo "$PR_DATA" | jq -r '.labels[].name')
+
+          for label in $CURRENT_LABELS; do
+            if [[ "$label" =~ ^size/ ]] && [ "$label" != "$SIZE_LABEL" ]; then
+              gh pr edit $PR_NUMBER --remove-label "$label" || true
+            fi
+          done
+
+          if ! echo "$CURRENT_LABELS" | grep -q "^$SIZE_LABEL$"; then
+            gh pr edit $PR_NUMBER --add-label "$SIZE_LABEL"
+          fi