Access main package from other package

Question

I want to access the main package from another package, but this is impossible because the main file isn't in a directory. I already tried putting the main file in a directory, but when I try to import it I get this error:
import "../main" is a program, not an importable package

The reason that I want this because I have a tcp server and a webserver that work together. The webserver can get the tcp server via the main package and the tcp server can get the webserver via the main package.

I already got it working with the webserver and tcpserver reading from each other(without the main package in the middle), but I want to keep some parts of the application at one place.

Is the the thing I want possible(Via the main package)? Or is it just stupid.

Knew

Without knowing the specifics, it sounds like you should have the webserver be under "package webserver" and the tcp server under "package tcpserver". You can then spin up a go program importing those two libraries. I do not believe you are able to import another package's "main" while you are inside "package main" already. – Codie

Answer 1

You cannot import the main package. Any shared code should go in a separate package, which can be imported by main (and other packages).

Overlook

See also groups.google.com/forum/#!topic/Golang-nuts/frh9zQPEjUk for discussion. – Goncourt

@Overlook What if you have something you need to initialize in main, such as a logger (pkg.go.dev/go.uber.org/zap#example-package-Presets)? You cannot have that in a utility package, for example, because you can't run main(). – Phototherapy

Then main should pass it to the functions/methods it calls. – Overlook

Answer 2

Another way to fix this is to pass a function call from the main . in which you create a function in your tcp or webserver then accepts a value in a function . then call it in the main

Because golang main is a program, not an importable package

Hydrogen