ocket8888 commented on a change in pull request #5922:
URL: https://github.com/apache/trafficcontrol/pull/5922#discussion_r648740923



##########
File path: lib/go-tc/deliveryservices.go
##########
@@ -192,18 +194,416 @@ type DeliveryServiceFieldsV31 struct {
 // DeliveryServiceV40 is a Delivery Service as it appears in version 4.0 of the
 // Traffic Ops API.
 type DeliveryServiceV40 struct {
-       DeliveryServiceFieldsV31
-       DeliveryServiceFieldsV30
-       DeliveryServiceFieldsV15
-       DeliveryServiceFieldsV14
-       DeliveryServiceFieldsV13
-       DeliveryServiceNullableFieldsV11
+       // Active dictates whether the Delivery Service is routed by Traffic 
Router.
+       Active bool `json:"active" db:"active"`

Review comment:
       in a handler in TO you can, but then if it's a PUT or POST you need to 
check again after reading from the database. And utility functions that don't 
know the contexts in which they might be used need to check, and client methods 
need to check before access, and code using the clients needs to check before 
access on the responses, and it needs to get checked ad nauseum in testing 
code. It's a giant pain that Go won't let you just say "if it's missing this 
property, throw an error". That would solve so many problems.




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