rob05c commented on a change in pull request #4790:
URL: https://github.com/apache/trafficcontrol/pull/4790#discussion_r465822582



##########
File path: lib/go-atscfg/meta.go
##########
@@ -146,24 +151,64 @@ func AddMetaObjConfigDir(
                        log.Errorln("meta config generation got Delivery 
Service with nil XMLID - not considering!")
                        continue
                }
+
                err := error(nil)
                // Note we log errors, but don't return them.
                // If an individual DS has an error, we don't want to break the 
rest of the CDN.
-               if (ds.EdgeHeaderRewrite != nil || ds.MaxOriginConnections != 
nil) &&
-                       strings.HasPrefix(server.Type, tc.EdgeTypePrefix) {
-                       fileName := "hdr_rw_" + *ds.XMLID + ".config"
-                       scope := tc.ATSConfigMetaDataConfigFileScopeCDNs
-                       if configFilesM, err = ensureConfigFile(configFilesM, 
fileName, configDir, scope); err != nil {
-                               log.Errorln("meta config generation: " + 
err.Error())
+               if ds.Topology != nil && *ds.Topology != "" {
+                       topology := tc.Topology{}
+                       for _, to := range topologies {
+                               if to.Name == *ds.Topology {
+                                       topology = to
+                                       break
+                               }
                        }

Review comment:
       I went back and forth whether to use a map for these. The performance 
doesn't matter, unless someone had on the order of a million topologies, the 
network cost vastly outweighs this. But I don't really object, I'll change them




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