I want use new relic APM in the mattermost application. In order to monitor the performance the application I have added the code (as mentioned in new relic) just above the createpost api request handler in api/post.go file.
func createPost(c *Context, w http.ResponseWriter, r *http.Request) {
config := newrelic.NewConfig("mylocalstarfp", "####12337")
app, err1 := newrelic.NewApplication(config)
fmt.Println("config")
fmt.Println(config)
if nil != err1 {
fmt.Println(err1)
// os.Exit(1)
}
txn := app.StartTransaction("mylocalstar",w, r)
defer txn.End()
post := model.PostFromJson(r.Body)
.....
.......
}
The application is displayed on new relic dashboard and attributes like CPU and Memory are displayed.But no Response time and Throughput attributes are displayed.
As per new relic documentation (https://github.com/newrelic/go-agent) this code has to be added in main /init block or just at start of function where we need to monitor the performance.
But I am not able to monitor as response time and throughput attributes are not being displayed. May be I am adding the code at wrong place. Also I have tried to add the code at beginning of main() function in mattermost.go file. But no success. Please suggest as to where I have to add the code.
Secondly, they have also mentioned that:
If you are using the standard HTTP library package, you can create transactions by wrapping HTTP requests, as an alternative to instrumenting a function's code.
Here is a before-and-after example of an HTTP handler being wrapped:Before:
http.HandleFunc("/users", usersHandler)After:
http.HandleFunc(newrelic.WrapHandleFunc(app, "/users", usersHandler))This automatically starts and ends a transaction with the request and response writer.
As per this where should I add the code in Mattermost?
