From 0580e5121e9b2650ab7821b690b9469864282bd2 Mon Sep 17 00:00:00 2001
From: Henrik Jess Nielsen <henrik@i80.dk>
Date: Sat, 4 Jan 2025 03:13:26 +0100
Subject: [PATCH] Lets make the frontpage in markdown too

---
 .gitea/workflows/main.yml | 64 ++++++++++++++++++++++-----------------
 1 file changed, 36 insertions(+), 28 deletions(-)

diff --git a/.gitea/workflows/main.yml b/.gitea/workflows/main.yml
index 42a8f9a..2d4bcc4 100644
--- a/.gitea/workflows/main.yml
+++ b/.gitea/workflows/main.yml
@@ -1,4 +1,4 @@
-name: Build, Push, and Deploy to Nomad
+name: Build, Push, and Deploy with Blue/Green or Canary
 
 on:
   push:
@@ -6,7 +6,7 @@ on:
       - main
 
 jobs:
-  docker-nomad:
+  build-push:
     runs-on: self-hosted
     steps:
       - name: Check out code
@@ -18,46 +18,54 @@ jobs:
       - name: Build Docker Image
         run: |
           COMMIT_HASH=$(git rev-parse --short HEAD)
-          docker build -t registry.i80.dk/gitea/lifefaq:latest -t registry.i80.dk/gitea/lifefaq:${COMMIT_HASH} .
-
+          docker build -t registry.i80.dk/gitea/lifefaq:green -t registry.i80.dk/gitea/lifefaq:${COMMIT_HASH} .
 
       - name: Push Docker Image
         run: |
           COMMIT_HASH=$(git rev-parse --short HEAD)
-          echo "registry.i80.dk/gitea/lifefaq:latest"
-          echo "registry.i80.dk/gitea/lifefaq:${COMMIT_HASH}"
           docker push registry.i80.dk/gitea/lifefaq:${COMMIT_HASH}
-          docker push registry.i80.dk/gitea/lifefaq:latest
+          docker push registry.i80.dk/gitea/lifefaq:green
 
-
-      - name: Validate Nomad Job
+  blue-green-deploy:
+    runs-on: self-hosted
+    needs: build-push
+    steps:
+      - name: Deploy Green Version
         env:
           NOMAD_ADDR: https://nomad.i80.dk
-        run: nomad job validate .gitea/workflows/nomad-job.hcl
+        run: nomad job run -var="image=registry.i80.dk/gitea/lifefaq:green" .gitea/workflows/nomad-job-green.hcl
 
-      - name: Stop old deployment
+      - name: Switch Traffic to Green
+        run: ssh runner@nomad sudo /opt/nginx_updater/venv/bin/python3 /opt/nginx_updater/nginx_updater.py lifefaq --target green
+
+      - name: Validate Deployment
+        run: curl -f https://lifefaq.i80.dk/health || exit 1
+
+      - name: Purge Old Blue Version
+        if: success()
         env:
           NOMAD_ADDR: https://nomad.i80.dk
-        run: nomad job stop -purge -no-shutdown-delay lifefaq
-        continue-on-error: true
+        run: nomad job stop -purge lifefaq-blue
 
-
-      - name: Apply Nomad Job
+  canary-deploy:
+    runs-on: self-hosted
+    needs: build-push
+    steps:
+      - name: Deploy Canary Version
         env:
           NOMAD_ADDR: https://nomad.i80.dk
-        run: nomad job run .gitea/workflows/nomad-job.hcl
+        run: nomad job run -var="image=registry.i80.dk/gitea/lifefaq:${COMMIT_HASH}" .gitea/workflows/nomad-job-canary.hcl
 
-      - name: Update Nginx Configuration
-        run:  ssh runner@nomad sudo /opt/nginx_updater/venv/bin/python3 /opt/nginx_updater/nginx_updater.py lifefaq
+      - name: Update Forwarder for Canary (10% traffic)
+        run: ssh runner@nomad sudo /opt/nginx_updater/venv/bin/python3 /opt/nginx_updater/update_forwarder.py --subdomain lifefaq --weight 10
 
-      - name: Update Forwarder Configuration
-        run:  ssh runner@nomad sudo /opt/nginx_updater/venv/bin/python3 /opt/nginx_updater/update_forwarder.py --subdomain lifefaq
+      - name: Monitor and Scale Canary
+        run: |
+          # Monitor performance for 10 minutes
+          sleep 600
+          curl -f https://lifefaq.i80.dk/health || exit 1
+          ssh runner@nomad sudo /opt/nginx_updater/venv/bin/python3 /opt/nginx_updater/update_forwarder.py --subdomain lifefaq --weight 50
 
-
-#      - name: Restart Nomad Job
-#        env:
-#          NOMAD_ADDR: https://nomad.i80.dk
-#        run: |
-#          nomad job stop lifefaq
-#          sleep 5  # Optional: Wait to ensure the old allocation is stopped
-#          nomad job run .gitea/workflows/nomad-job.hcl
+      - name: Complete Canary Rollout
+        if: success()
+        run: ssh runner@nomad sudo /opt/nginx_updater/venv/bin/python3 /opt/nginx_updater/update_forwarder.py --subdomain lifefaq --weight 100