From 6ddd978e44134febffc857e9cd871982b4c6d36b Mon Sep 17 00:00:00 2001
From: aSemy <897017+aSemy@users.noreply.github.com>
Date: Mon, 30 Jan 2023 22:18:43 +0100
Subject: [PATCH] Add concurrency cancellation for test/build GitHub Actions
 (#2710)

The GitHub Actions build queue can get 'stacked up' if there are a few smaller commits in quick succession. Since the actions take some time, some small commits can cause the GHA build queue to get congested.

This adds a 'concurrency' check for GitHub actions. It means that if a newer trigger comes in (for example, if you make two commits in a row on a PR), then the first job will be cancelled, allowing for the new job to run.

This helps save energy, and for faster feedback in PRs.

Reference docs: https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-concurrency-to-cancel-any-in-progress-job-or-run
---
 .github/workflows/check.yml          | 4 ++++
 .github/workflows/dokka-examples.yml | 4 ++++
 .github/workflows/gradle-test.pr.yml | 4 ++++
 .github/workflows/qodana.yml         | 4 ++++
 4 files changed, 16 insertions(+)

diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index c6f169dcca..a6475749f9 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -2,6 +2,10 @@ name: Check
 
 on: pull_request
 
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   validate-wrapper:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/dokka-examples.yml b/.github/workflows/dokka-examples.yml
index f116777125..e8782c1c7b 100644
--- a/.github/workflows/dokka-examples.yml
+++ b/.github/workflows/dokka-examples.yml
@@ -2,6 +2,10 @@ name: Build examples
 
 on: pull_request
 
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   build:
     strategy:
diff --git a/.github/workflows/gradle-test.pr.yml b/.github/workflows/gradle-test.pr.yml
index 1a40239cf5..6a732dfcc9 100644
--- a/.github/workflows/gradle-test.pr.yml
+++ b/.github/workflows/gradle-test.pr.yml
@@ -2,6 +2,10 @@ name: Test
 
 on: pull_request
 
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   test-ubuntu:
     strategy:
diff --git a/.github/workflows/qodana.yml b/.github/workflows/qodana.yml
index b77719eaa9..2975c50496 100644
--- a/.github/workflows/qodana.yml
+++ b/.github/workflows/qodana.yml
@@ -7,6 +7,10 @@ on:
     branches:
       - master
 
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
 jobs:
   inspection:
     runs-on: ubuntu-latest