From 4b2d54c884f5b1119d1995a4f553b29cf1b20475 Mon Sep 17 00:00:00 2001
From: Olivier Desenfans <desenfans.olivier@gmail.com>
Date: Sun, 19 Apr 2026 22:40:42 +0200
Subject: [PATCH] ci: parallelize CRN install with CCN stack + contract deploy
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Splits the sequential "Start stack → Deploy contracts → Install and
register CRN" block into a parallel phase (CCN up + deploy contracts ||
CRN --install) followed by a serial --register step. CRN state setup is
moved to its own fast prep step so both branches have what they need.
Both sides' logs are captured and printed after wait so failures remain
easy to diagnose.

Expected saving: 2-3 min off the ~15 min PR pipeline.
---
 .github/workflows/pr-tests.yml | 59 +++++++++++++++++++++++-----------
 1 file changed, 41 insertions(+), 18 deletions(-)

diff --git a/.github/workflows/pr-tests.yml b/.github/workflows/pr-tests.yml
index 67f60d6..6ed905d 100644
--- a/.github/workflows/pr-tests.yml
+++ b/.github/workflows/pr-tests.yml
@@ -148,17 +148,8 @@ jobs:
         run: |
           ssh root@${DROPLET_IPV4} "cd /opt/aleph-testnets && bash scripts/local-up.sh --env"
 
-      - name: Start stack
+      - name: Prepare CRN state on CCN
         run: |
-          ssh root@${DROPLET_IPV4} "cd /opt/aleph-testnets && bash scripts/local-up.sh --up"
-
-      - name: Deploy contracts and start indexer
-        run: |
-          ssh root@${DROPLET_IPV4} "cd /opt/aleph-testnets && bash scripts/local-up.sh --deploy-contracts"
-
-      - name: Install and register CRN
-        run: |
-          # Write CRN state so crn-up.sh can find the droplet
           ssh root@${DROPLET_IPV4} "mkdir -p /opt/aleph-testnets/.local/crn/0"
           ssh root@${DROPLET_IPV4} "echo '$CRN_NAME' > /opt/aleph-testnets/.local/crn/0/droplet-name"
           ssh root@${DROPLET_IPV4} "echo '$CRN_IPV4' > /opt/aleph-testnets/.local/crn/0/droplet-ip"
@@ -166,18 +157,50 @@ jobs:
             ssh root@${DROPLET_IPV4} "echo '$CRN_IPV6' > /opt/aleph-testnets/.local/crn/0/droplet-ipv6"
           fi
 
-          # Copy SSH key to CCN droplet so it can reach the CRN
           scp ~/.ssh/id_ed25519 root@${DROPLET_IPV4}:/root/.ssh/id_ed25519
           ssh root@${DROPLET_IPV4} "chmod 600 /root/.ssh/id_ed25519"
 
-          # Install CRN (system packages already done in parallel earlier,
-          # this handles vm-connector, .deb download, supervisor config)
-          ssh root@${DROPLET_IPV4} "cd /opt/aleph-testnets && \
-            CCN_URL=http://${DROPLET_IPV4}:4024 \
-            SSH_KEY_FILE=/root/.ssh/id_ed25519 \
-            bash scripts/crn-up.sh --install"
+      - name: Start stack + deploy contracts (CCN) and install CRN (parallel)
+        run: |
+          log_dir=$(mktemp -d)
+          echo "LOG_DIR=$log_dir" >> "$GITHUB_ENV"
 
-          # Register CRN in corechannel aggregate
+          # CCN path: bring up the stack, then deploy contracts + start indexer.
+          # CRN --register depends on both, so it still runs serially after this.
+          (
+            set -e
+            ssh root@${DROPLET_IPV4} "cd /opt/aleph-testnets && bash scripts/local-up.sh --up"
+            ssh root@${DROPLET_IPV4} "cd /opt/aleph-testnets && bash scripts/local-up.sh --deploy-contracts"
+          ) >"$log_dir/ccn.log" 2>&1 &
+          CCN_PID=$!
+
+          # CRN --install (download .deb, docker pull vm-connector, supervisor config).
+          # Independent of the CCN stack — safe to run concurrently.
+          (
+            set -e
+            ssh root@${DROPLET_IPV4} "cd /opt/aleph-testnets && \
+              CCN_URL=http://${DROPLET_IPV4}:4024 \
+              SSH_KEY_FILE=/root/.ssh/id_ed25519 \
+              bash scripts/crn-up.sh --install"
+          ) >"$log_dir/crn-install.log" 2>&1 &
+          CRN_PID=$!
+
+          # Wait on both; tag which side failed so the log is easy to read.
+          ccn_rc=0; crn_rc=0
+          wait $CCN_PID || ccn_rc=$?
+          wait $CRN_PID || crn_rc=$?
+
+          echo "===== CCN log (rc=$ccn_rc) ====="
+          cat "$log_dir/ccn.log"
+          echo "===== CRN install log (rc=$crn_rc) ====="
+          cat "$log_dir/crn-install.log"
+
+          if [ $ccn_rc -ne 0 ] || [ $crn_rc -ne 0 ]; then
+            exit 1
+          fi
+
+      - name: Register CRN
+        run: |
           ssh root@${DROPLET_IPV4} "cd /opt/aleph-testnets && \
             CCN_URL=http://${DROPLET_IPV4}:4024 \
             SSH_KEY_FILE=/root/.ssh/id_ed25519 \