CI: Generate release and index only on real changes detected in charts.

Ignore CT "invalid directory" output. Revert to origin/master changes
detection.

Signed-off-by: Dinko Korunic <[email protected]>

Author: dkorunic

.circleci/config.yml

@@ -16,10 +16,7 @@ jobs:
     steps:
       - checkout
       - run:
-          command: |
-            git remote add k8s https://github.com/haproxytech/helm-charts
-            git fetch k8s master
-            ct lint --config .circleci/ct.yaml
+          command: ct lint --config .circleci/ct.yaml
   install-charts:
     machine: true
     steps:

.circleci/ct.yaml

@@ -1,4 +1,2 @@
-remote: k8s
-target-branch: master
 chart-dirs: .
 helm-extra-args: --timeout 600s

.circleci/install_charts.sh

@@ -62,7 +62,7 @@ main() {
 
     echo "Testing for chart repo changes"
     local changed
-    changed=$(docker_exec ct list-changed 2>/dev/null | grep -v "is not a valid chart directory")
+    changed=$(docker_exec ct list-changed | grep -v "is not a valid chart directory")
     if [[ -z "${changed}" ]]; then
         echo "No chart changes detected"
         return

.circleci/release.sh

@@ -77,15 +77,21 @@ main() {
     readarray -t changed_charts <<< "$(git diff --find-renames --name-only "${latest_tag_rev}" | grep '\.yaml$' | cut -d '/' -f 1 | sort -u)"
 
     if [[ -n "${changed_charts[*]}" ]]; then
+        local release_pending=no
         for chart in "${changed_charts[@]}"; do
             if [[ -f "${chart}/Chart.yaml" ]]; then
+                release_pending=yes
                 echo "Packaging chart ${chart}"
                 package_chart "${chart}"
             fi
         done
 
-        release_charts
-        update_index
+        if [[ "${release_pending}" == "yes" ]]; then
+            release_charts
+            update_index
+        else
+            echo "Nothing to do. No chart changes detected."
+        fi
     else
         echo "Nothing to do. No chart changes detected."
     fi