Adding initial GitHub Actions

scripts/decrease-runners.sh

@@ -0,0 +1,93 @@
+#!/usr/bin/env bash
+SCDIR=$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")
+SCDIR=$(realpath $SCDIR)
+PARENT=$(realpath $SCDIR/..)
+
+function max_replicas() {
+  kubectl get horizontalrunnerautoscalers --output=json | jq '.items | map(select(.spec.scaleTargetRef.name == "runners-ci")) | .[] | .spec.maxReplicas'
+}
+function min_replicas() {
+  kubectl get horizontalrunnerautoscalers --output=json | jq '.items | map(select(.spec.scaleTargetRef.name == "runners-ci")) | .[] | .spec.minReplicas'
+}
+function count_runners() {
+  kubectl get rdeploy runners-ci --output=json | jq '.spec.replicas'
+}
+function count_running() {
+  kubectl get rdeploy | grep -F "runners-ci" | awk '{print $4}'
+}
+
+if [ "$1" = "" ]; then
+  echo "Expected number to decrease"
+  exit 1
+fi
+echo "Checking stream-apps-gh-runners"
+DEC=$1
+MIN_RUNNERS=$2
+
+SCALING=$(jq '.scdf_pro_gh_runners.runner_scaling' $PARENT/config/defaults.json | sed 's/\"//g')
+cp $SCDIR/k8s/runners-ci-${SCALING}-template.yaml runners-ci-change.yaml
+if [ "$SCALING" == "auto" ]; then
+  MAX_RUNNERS=$(max_replicas)
+  MAX_RUNNERS=$((MAX_RUNNERS - DEC))
+  CURRENT=$(min_replicas)
+  if [ "$MIN_RUNNERS" == "" ]; then
+    MIN_RUNNERS=$((CURRENT - DEC))
+  fi
+  if ((MAX_RUNNERS < 1)); then
+    MAX_RUNNERS=1
+  fi
+  if ((MIN_RUNNERS < 1)); then
+    MIN_RUNNERS=1
+  fi
+else
+  CURRENT=$(count_runners)
+  echo "There are now $CURRENT runners"
+  TARGET=$((CURRENT - DEC))
+fi
+
+if [ "$MIN_RUNNERS" != "" ]; then
+  if ((TARGET < MIN_RUNNERS)); then
+    TARGET=$MIN_RUNNERS
+  fi
+fi
+if ((TARGET < 1)); then
+  TARGET=1
+fi
+OS=$(uname)
+OS="${OS//./L&}"
+ARCH=$(uname -i)
+case $ARCH in
+"x86_64")
+  ARCH=amd64
+  ;;
+*)
+  echo "Architecture:$ARCH may not be supported by summerwind/actions-runner"
+  ;;
+esac
+IMAGE_SHA=$(wget -q -O- https://hub.docker.com/v2/repositories/summerwind/actions-runner/tags | jq --arg os $OS --arg arch $ARCH '.results | map(select(.name="latest")) | .[0].images | map(select(.os==$os and .architecture==$arch)) | .[0].digest' | sed 's/\"//g')
+if [ "$IMAGE_SHA" == "" ]; then
+  IMAGE_SHA="latest"
+fi
+sed -i 's/tag-placeholder/'"$IMAGE_SHA"'/g' runners-ci-change.yaml
+if [ "$SCALING" == "auto" ]; then
+  MAX_RUNNERS=$((MAX_RUNNERS - DEC))
+  echo "Runners: changing scaling min: $MIN_RUNNERS, max: $MAX_RUNNERS"
+  sed -i 's/max-replicas-placeholder/'"$MAX_RUNNERS"'/g' runners-ci-change.yaml
+  sed -i 's/min-replicas-placeholder/'"$MIN_RUNNERS"'/g' runners-ci-change.yaml
+else
+  echo "Runners:$CURRENT decrease by $DEC to $TARGET"
+  sed -i 's/replicas-placeholder/'"$TARGET"'/g' runners-ci-change.yaml
+fi
+cmp --silent "$SCDIR/k8s/runners-ci-${SCALING}-template.yaml" runners-ci-change.yaml
+RC=$?
+if ((RC != 0)); then
+  kubectl apply -f runners-ci-change.yaml
+  echo "Runners: changed to $RUNNERS"
+  if [ "$SCALING" != "auto" ]; then
+    $SCDIR/wait-k8s.sh 1 --for=condition=ready --timeout=1m pod -l runner-deployment-name=runners-ci --all-namespaces=true
+  fi
+else
+  echo "Runners: unchanged"
+fi
+rm -f runners-ci-change.yaml
+$SCDIR/check-runners.sh