DK101010 commented on a change in pull request #4399:
URL: https://github.com/apache/cloudstack/pull/4399#discussion_r540014313



##########
File path: engine/schema/src/main/java/com/cloud/host/dao/HostDaoImpl.java
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@@ -480,6 +482,25 @@ public Integer countAllByTypeInZone(long zoneId, Type 
type) {
         return listBy(sc);
     }
 
+    @Override
+    public boolean checkHostServiceOfferingTags(HostVO host, ServiceOffering 
serviceOffering){
+        if (host == null) {
+            return false;
+        }
+        if (serviceOffering == null) {
+            return false;
+        }
+        if (Strings.isNullOrEmpty(serviceOffering.getHostTag())) {
+            return true;
+        }
+
+        List<String> serviceOfferingTags = 
Arrays.asList(serviceOffering.getHostTag().split(","));
+        if(host.getHostTags() != null && 
host.getHostTags().containsAll(serviceOfferingTags)){
+            return true;
+        }
+        return false;
+    }

Review comment:
       Hi,
   In the HostDaoImpl there are a couple of other methods that are check host 
tags, therefore i thought will be good to add this also here. So will be 
encapsulate common logic in one class, but my experience is still not very well 
in CS and when it destroy other guidelines then will be also ok to move this 
method. For me sounds HostVO good, because it  seems to be only relevant for 
this object.  




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