CLOUDP-79100: Autoclose stale issues and PRs (#318)

.github/workflows/stale.yml

@@ -0,0 +1,22 @@
+---
+name: 'Stale issues and PRs handler'
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v6
+        id: stale
+        with:
+          stale-issue-message: 'This issue has gone 30 days without any activity and meets the project’s definition of "stale". This will be auto-closed if there is no new activity over the next 30 days. If the issue is still relevant and active, you can simply comment with a "bump" to keep it open, or add the label "not_stale". Thanks for keeping our repository healthy!'
+          stale-pr-message: 'This PR has gone 30 days without any activity and meets the project’s definition of "stale". This will be auto-closed if there is no new activity over the next 30 days. If the issue is still relevant and active, you can simply comment with a "bump" to keep it open, or add the label "not_stale". Thanks for keeping our repository healthy!'
+          stale-issue-label: 'stale'
+          stale-pr-label: 'stale'
+          days-before-stale: 30
+          days-before-close: 30
+          exempt-pr-labels: 'not_stale'
+          exempt-issue-labels: 'not_stale'

CONTRIBUTING.md

@@ -44,6 +44,11 @@ Some additional advice:
 Before creating a pull request consider opening a new issue first,
 please check [this section](#reporting-bugs-or-suggesting-enhancements) on how we track issues for this project.
 
+### Autoclose stale issues and PRs
+
+- After 30 days of no activity (no comments or commits on an issue/PR) we automatically tag it as "stale" and add a message: ```This issue/PR has gone 30 days without any activity and meets the project's definition of "stale". This will be auto-closed if there is no new activity over the next 60 days. If the issue is still relevant and active, you can simply comment with a "bump" to keep it open, or add the label "not_stale". Thanks for keeping our repository healthy!```
+- After 60 more days of no activity we automatically close the issue/PR.
+
 ### Development setup
 
 #### Prerequisite Tools