feature: Create helm_rollback.sh

Author: joli-sys

scripts/helm_rollback.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+export RELEASE=$(echo "${HELM_RELEASE_NAME:0:36}" | sed -E 's/-+$//')
+
+FAILED=$(helm list --failed -n $KUBE_NAMESPACE | grep  ^${RELEASE}\\s | wc -l )
+PENDING=$(helm list --pending -n $KUBE_NAMESPACE | grep  ^${RELEASE}\\s | wc -l)
+
+if [ "$PENDING" -gt 0 ]; then
+  echo "Pending release found."
+  helm list --pending -n $KUBE_NAMESPACE
+  echo "Waiting for 15 minutes ..."
+  for i in $(seq 1 15); do
+    sleep 60
+    echo "Still wating for $i minutes"
+    PENDING=$(helm list --pending -n $KUBE_NAMESPACE | grep  ^${RELEASE}\\s | wc -l)
+    if [ "$PENDING" -eq 0 ]; then
+      break
+    fi
+  done
+fi
+
+FAILED=$(helm list --failed -n $KUBE_NAMESPACE | grep  ^${RELEASE}\\s | wc -l )
+PENDING=$(helm list --pending -n $KUBE_NAMESPACE | grep  ^${RELEASE}\\s | wc -l)
+
+if [ "$PENDING" -gt 0 -o "$FAILED" -gt 0 ]; then
+  echo "Pending or failed release found."
+  helm list --failed --pending -n $KUBE_NAMESPACE
+  export LAST=$(helm list --failed --pending -n $KUBE_NAMESPACE | grep  ^${RELEASE}\\s | awk '{print $3-1}')
+  echo "Rolling back to ${LAST}..."
+  helm rollback $RELEASE $LAST -n $KUBE_NAMESPACE
+else
+  echo "No pending/failed release, go ahead."
+fi