GAE Golang - log.Print()?

Question

Where can one read logs created by calling function:

log.Print("Message")

The tab "Logs" under Main seems to only display information about what URLs were called, but without any debug information that would be displayed by the application.

Answer 1

As described in the documentation, you should use the Context interface to log instead of log, if you want your logs to show up in the console.

c := appengine.NewContext(r)
c.Infof("Requested URL: %v", r.URL)

Answer 2

If you are using the new App Engine package google.golang.org/appengine, in the README:

• Logging methods that were on appengine.Context are now functions in google.golang.org/appengine/log

So you should use

c := appengine.NewContext(r)
log.Infof(c, "Requested URL: %v", r.URL)