service discovery stop/start

Author: terrywbrady

app/lib/routes/services.rb

@@ -587,9 +587,11 @@ def java_service_send_stop_start(host, service, endpoint)
           namespace_name: "merritt-#{UC3::UC3Client.stack_name}",
           health_status: 'HEALTHY'
         ).instances.each do |instance|
-          host = instance.attributes.fetch('AWS_INSTANCE_IPV4', '')
-          resp << post_url("http://#{host}:8080/#{service}/#{endpoint}") unless host.empty?
+          hostip = instance.attributes.fetch('AWS_INSTANCE_IPV4', '')
+          resp << post_url("http://#{hostip}:8080/#{service}/#{endpoint}") unless hostip.empty?
         end
+      # if service is not yet in ECS, use ALB address to send request to one host
+      return post_url("#{host}/#{endpoint}") if resp.empty?
       resp
     rescue StandardError
       post_url("#{host}/#{endpoint}")