Setup integration with unmanaged community build

Author: WojciechMazur

.github/workflows/ci.yaml

@@ -551,6 +551,10 @@ jobs:
         run: |
           ./project/scripts/sbtPublish ";project scala3-bootstrapped ;publishSigned ;sonatypeBundleRelease"
 
+      - name: Trigger unmanaged community build
+        continue-on-error: true
+        run: .github/workflows/scripts/triggerUnmanagedCommunityBuild.sh "${{ secrets.BUILD_TOKEN }}" "$THISBUILD_VERSION"
+
   nightly_documentation:
     runs-on: [self-hosted, Linux]
     container:

.github/workflows/scripts/triggerUnmanagedCommunityBuild.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+# This is script for triggering unamanged community build upon releasing nightly version.
+# Script sends request to CB Jenkins instance to start the build for given released Scala version
+# Prints url of created job to stdout
+#
+# Requirement:
+#   - the latest (nightly) version of scala should be published
+
+set -u
+
+if [ $# -ne 2 ]; then
+  echo "Wrong number of script arguments, expected <token> <scala-version>, got $#: $@"
+  exit 1
+fi
+
+CB_ENDPOINT=https://scala3.westeurope.cloudapp.azure.com
+CB_BUILD_TOKEN="$1"
+SCALA_VERSION="$2"
+
+startRunResponse=$(curl "${CB_ENDPOINT}/job/runBuild/buildWithParameters?token=${CB_BUILD_TOKEN}&publishedScalaVersion=${SCALA_VERSION}" -v 2>&1)
+echo "${startRunResponse}"
+queueItem=$(echo "${startRunResponse}" | grep -oP "< Location: \K[\w\d:/.//]+")
+# Wait until Jenkins does acknowledge the build (max 1 min )
+for i in {1..12}; do
+  buildUrl=$(curl -s "${queueItem}/api/json?tree=executable[url]" | jq .executable.url)
+  if [[ "null" == "${buildUrl}" ]]; then
+    echo "Waiting for build start..."
+    sleep 5
+  else
+    echo "Created build url: ${buildUrl}"
+    exit 0
+  fi
+done
+
+# Set error if failed to resolve build url
+exit 1