alficles commented on a change in pull request #4419: ORT Speed Improvements
URL: https://github.com/apache/trafficcontrol/pull/4419#discussion_r382256966
##########
File path: traffic_ops/ort/atstccfg/toreq/caching.go
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@@ -177,3 +215,65 @@ func GetCookiesFromFile(tempDir string, cacheFileMaxAge
time.Duration) (string,
}
return string(bts), nil
}
+
+// DSSExtension is the file extension for the format read and written by
DSSEncode and DSSDecode.
+const DSSExtension = ".csv"
+
+// DSSEncode is an EncodeFunc optimized for Delivery Service Servers.
+// If iObj is not a *[]tc.DeliveryServiceServer it immediately returns an
error.
+func DSSEncode(w io.Writer, iObj interface{}) error {
+ // Please don't change this to use encoding/csv unless you benchmark
and prove it's at least as fast. DSS is massive, and performance is important.
+ obj, ok := iObj.(*[]tc.DeliveryServiceServer)
+ if !ok {
+ return fmt.Errorf("object is '%T' must be a
*[]tc.DeliveryServiceServer\n", iObj)
+ }
+ for _, dss := range *obj {
+ if dss.DeliveryService == nil || dss.Server == nil {
+ continue // TODO warn?
+ }
+ if _, err := io.WriteString(w,
strconv.Itoa(*dss.DeliveryService)+`,`+strconv.Itoa(*dss.Server)+"\n"); err !=
nil {
Review comment:
Would this be faster with multiple writes instead of string concatenation?
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