From 2316c2a189ada6957a500cc7b103bc5b836f5094 Mon Sep 17 00:00:00 2001
From: sideshowbarker <mike@w3.org>
Date: Sun, 18 Feb 2024 14:26:40 +0900
Subject: [PATCH] Re-use the same runner among all jobs in ci-spec.yml workflow

---
 .github/workflows/ci-spec.yml | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/ci-spec.yml b/.github/workflows/ci-spec.yml
index a806b24394..791b165beb 100644
--- a/.github/workflows/ci-spec.yml
+++ b/.github/workflows/ci-spec.yml
@@ -13,15 +13,24 @@ on:
   workflow_dispatch:
 
 jobs:
+  establish-job-runner:
+    name: Get a containerized runner name to use for this workflow
+    runs-on: [self-hosted, ubuntu-latest]
+    outputs:
+      established-runner: ${{ runner.name }}
+    steps:
+      - run: echo "selected runner = ${{ runner.name }}"
+
   set-up-bikeshed:
-    runs-on: ubuntu-latest
+    needs: [establish-job-runner]
+    runs-on: ${{ needs.establish-job-runner.outputs.established-runner }}
     steps:
       - name: Setup Bikeshed
         run: pip install bikeshed && bikeshed update
 
   set-up-environment:
-    runs-on: ubuntu-latest
-    needs: [set-up-bikeshed]
+    needs: [establish-job-runner, set-up-bikeshed]
+    runs-on: ${{ needs.establish-job-runner.outputs.established-runner }}
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
@@ -38,7 +47,7 @@ jobs:
 
   build-core-spec:
     runs-on: ubuntu-latest
-    needs: [set-up-environment]
+    needs: [establish-job-runner, set-up-environment]
     steps:
       - name: Build main spec
         run: cd document/core && make main
@@ -52,7 +61,7 @@ jobs:
 
   build-js-api-spec:
     runs-on: ubuntu-latest
-    needs: [set-up-bikeshed]
+    needs: [establish-job-runner, set-up-bikeshed]
     steps:
       - name: Run Bikeshed
         run: bikeshed spec "document/js-api/index.bs" "document/js-api/index.html"
@@ -64,7 +73,7 @@ jobs:
 
   build-web-api-spec:
     runs-on: ubuntu-latest
-    needs: [set-up-bikeshed]
+    needs: [establish-job-runner, set-up-bikeshed]
     steps:
       - name: Run Bikeshed
         run: bikeshed spec "document/web-api/index.bs" "document/web-api/index.html"
@@ -76,7 +85,7 @@ jobs:
 
   publish-spec:
     runs-on: ubuntu-latest
-    needs: [build-core-spec, build-js-api-spec, build-web-api-spec]
+    needs: [establish-job-runner, build-core-spec, build-js-api-spec, build-web-api-spec]
     steps:
       - name: Create output directory
         run: mkdir _output && cp document/index.html _output/index.html
@@ -104,7 +113,7 @@ jobs:
 
   publish-to-w3c-TR:
     runs-on: ubuntu-latest
-    needs: [set-up-environment]
+    needs: [establish-job-runner, set-up-environment]
     steps:
       - name: Publish all specs to their https://www.w3.org/TR/ URLs
         run: cd document && make -e WD-echidna-CI