在子包中引用包main

Question

new to Golang and have a seemingly simple question. If I have a logger in package main (and defined in logger.go) at my project root, how do I reference that logger in a subpackage (ie: my routes package)?

My directory structure is:

• main.go
• logger.go
• routesoutes.go
• ...

I would think if Logger is public it would already be available to routes, but I get 'undefined: Logger' in routes.go. And if I try to import my main package in routes.go I get an 'import cycle not allowed' error since routes.go imports package main and main.go imports package routes.

Any help would be much appreciated!

Answer 1

The only way to resolve this is to move the shared logger to a third package and import it into both main and routes. Otherwise you get a cyclic dependency which as you've seen is not allowed.

Simply add a folder called logger and put your logger in there. now import it into the other 2 packages, and you're done.