是否可以获取GAE上的日志点？

Question

I'm wondering if it's possible to log the line/column number when i log an error. The GAE logging lib seems to store only the error message but I think it would be quite valuable to get the exact location of the error/log point like most logging libraries do.

Answer 1

What you request is definitely possible, you just need to be very explicit about it! I recommend Andrew Gerrand's excellent article at http://blog.golang.org/error-handling-and-go for general information on the issue, including notes specific to App Engine.

That article does not specifically address stack traces, but of course you could do those yourself, via http://golang.org/pkg/runtime/#Stack .

Let's be honest and admit that Go -- being by design more of a system-programming language than of an application-focused one -- doesn't do quite as much implicit, automatic hand-holding for you, as more app-oriented languages such as the other App Engine ones -- Java, Python, PHP... [*] but, Go does give you all the tools you need to do just as little, or as much, "supporting infrastructure", as you desire to have in support of your own apps!-)

[*] hey, you don't even get automatically by-default propagating exceptions, as you do for other languages -- nay, you're responsible for catching and dealing with errors yourself, oh the horror...!-)