Cannot Import Function in Module with Golang workspace

Question

What I need

I can write almost all the functions in the module I created, except the one thing I need most is undefined... I really need to use this function

Directory and files

Directory Hierarchy

workdir
    main.go
    go.mod
    go.work
    userinfo
        userinfo.go
        go.mod

workdir/go.mod

module example.com/workdir

go 1.21.5

workdir/go.work

go 1.21.5

use (
    .
    ./userinfo
)

workdir/userinfo/go.mod

module example.com/userinfo

go 1.21.5

Detailed explanation

The first idea was simple... I was tired of typing username and password into the database over ssh every time, so I wanted to store the username and password in the config, and have it pull them out whenever I needed them.

So I wrote a bunch of functions in the workdir/userinfo directory to encrypt the username and password with the rsa algorithm, set the public and private keys to this and that, etc.

And finally, I put in a function that would always enter my commands exactly as they should be.

func comExec(dbCommand string) (string, error) {

    var result string
    // Load private key for decryption
    privateKey, err := LoadPrivateKey()
    if err != nil {
        return "", err
    }

    // Read and decrypt credentials
    user, password, err := ReadCredentials(privateKey)
    if err != nil {
        return "", err
    }

    //execute command with db argument
    cmd := exec.Command("myDatabase", dbCommand, "--address=http://localhost.com/db", "--username", user, "--password", password)
    var out bytes.Buffer
    cmd.Stdout = &out

    err = cmd.Run()
    if err != nil {
        return "", err
    }

    result = out.String()
    return result, nil
}

Obviously, while I was creating this module, I could type go run userinfo.go and everything worked perfectly.

So naturally, I created main.go in my workdir, and I put these functions in there.

import (
    "fmt"
    "strings"

    "example.com/userinfo"
)

func main() {

    var comm := string
    fmt.Scanf("what do you want : %s", &comm)

    result, err := userinfo.comExec(comm)
    if err != nil {
        fmt.Printf("error occurs:", err)
        return
    }

    // Print the fourth part of the command output
    outputParts := strings.Split(result, "\n")
    if len(outputParts) >= 4 {
        fmt.Println(outputParts[3])
    } else {
        fmt.Println("Insufficient output from command")
    }
}

and then, undefined: userinfo.comExec compiler(UndeclaredImportedName) comes to me.

Added

It's only occurs to comExec function. I use vscode, obviously it has automatic completion, and in my userinfo.go, there are bunch of functions, such as decrypt, encrypt, generateRSAkeys etc. vscode can complete those functions when I stopped at userinfo. but no comExec only.

Added 2

https://youtu.be/RGrEUGCrT4g

I recorded myself, as you can see, when I save the file, imported module disappeared, because there are no function is from the module, actually it exactly there!

Answer 1

You can try commands like go work sync , go mod tidy and go get "example.com/userinfo" . Also better to make comExec to ComExec this can help in making the function exported. You can refer official golang document about working with multiple modules https://go.dev/doc/tutorial/workspaces