Merge pull request #7666 from XRFoundation/checkengine-script-changes

Fixes various issues in check engine script.

scripts/check-engine.sh

@@ -1,37 +1,45 @@
+#!/bin/bash
+
 apiName="${RELEASE_NAME}-xrengine-api"
 clientName="${RELEASE_NAME}-xrengine-client"
 instanceserverName="${RELEASE_NAME}-instanceserver"
 
 apiCount=$(kubectl get deploy $apiName -o jsonpath='{.status.availableReplicas}')
+if [ -z "$apiCount" ]; then
+    apiCount=0
+fi
 echo "API ready count: $apiCount"
 
 # Wait until api count is 1.
-until [ $apiCount -ge 1 ]
-do
+until [ "${apiCount}" -ge 1 ]; do
     sleep 5
 
     apiCount=$(kubectl get deploy $apiName -o jsonpath='{.status.availableReplicas}')
     echo "API ready count: $apiCount"
 done
 
 clientCount=$(kubectl get deploy $clientName -o jsonpath='{.status.availableReplicas}')
+if [ -z "$clientCount" ]; then
+    clientCount=0
+fi
 echo "Client ready count: $clientCount"
 
 # Wait until client count is 1.
-until [ $clientCount -ge 1 ]
-do
+until [ "${clientCount}" -ge 1 ]; do
     sleep 5
 
     clientCount=$(kubectl get deploy $clientName -o jsonpath='{.status.availableReplicas}')
     echo "Client ready count: $clientCount"
 done
 
 instanceserverCount=$(kubectl get fleet $instanceserverName -o jsonpath='{.status.readyReplicas}')
+if [ -z "$instanceserverCount" ]; then
+    instanceserverCount=0
+fi
 echo "Instanceserver ready count: $instanceserverCount"
 
 # Wait until instanceserver count is 1.
-until [ $instanceserverCount -ge 1 ]
-do
+until [ "${instanceserverCount}" -ge 1 ]; do
     sleep 5
 
     instanceserverCount=$(kubectl get fleet $instanceserverName -o jsonpath='{.status.readyReplicas}')