From dc01b874db2f2909dd90f62847d995e7c94a17eb Mon Sep 17 00:00:00 2001
From: Chris Lovering <chris.lovering.95@gmail.com>
Date: Mon, 30 Aug 2021 19:47:36 +0100
Subject: Add concurrency rules to all GitHub workflows

This concurrency rule means that workflow actions will be cancelled if a new set of actions are triggered on the same ref. A ref is either a PR or a branch itself.

Doing this means that if someone pushes to a PR multiple times in quick succession, workflows won't get queued up. Instead, only the workflows from the most recent changes will run, as this is all we really care about anyway.

I see the benefits of this as twofold.
1. The author gets faster feedback about the most recent change pushed, rather than have to wait for all previous runs to completed
2. Other contributors don't need to wait for a queue of redundant workflows to finish.
---
 .github/workflows/build.yml          | 4 ++++
 .github/workflows/deploy.yml         | 4 ++++
 .github/workflows/lint-test.yml      | 3 +++
 .github/workflows/sentry_release.yml | 4 ++++
 .github/workflows/status_embed.yaml  | 4 ++++
 5 files changed, 19 insertions(+)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 84a671917..f8f2c8888 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,6 +8,10 @@ on:
     types:
       - completed
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     if: github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event == 'push'
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 8b809b777..0f030ebd7 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -8,6 +8,10 @@ on:
     types:
       - completed
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     environment: production
diff --git a/.github/workflows/lint-test.yml b/.github/workflows/lint-test.yml
index e99e6d181..c4f87d522 100644
--- a/.github/workflows/lint-test.yml
+++ b/.github/workflows/lint-test.yml
@@ -6,6 +6,9 @@ on:
       - main
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 jobs:
   lint-test:
diff --git a/.github/workflows/sentry_release.yml b/.github/workflows/sentry_release.yml
index f6a1e1f0e..48f5e50f4 100644
--- a/.github/workflows/sentry_release.yml
+++ b/.github/workflows/sentry_release.yml
@@ -5,6 +5,10 @@ on:
     branches:
       - main
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   create_sentry_release:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/status_embed.yaml b/.github/workflows/status_embed.yaml
index b6a71b887..4178c366d 100644
--- a/.github/workflows/status_embed.yaml
+++ b/.github/workflows/status_embed.yaml
@@ -9,6 +9,10 @@ on:
     types:
       - completed
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   status_embed:
     # We need to send a status embed whenever the workflow
-- 
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