Goal: I want to reuse many Go functions from two Go functions with HTTP triggers.
What I have tried and steps to reproduce the problem:
- In GCP, create a new Go 1.11 Cloud Function, HTTP Trigger
- Name it:
MyReusableHelloWorld - In
function.go, paste this:
package Potatoes
import (
"net/http"
)
// Potatoes return potatoes
func Potatoes(http.ResponseWriter, *http.Request) {
}
- In
go.mod, paste this:module example.com/foo - In function to execute, paste this:
Potatoes - Click on deploy. It works.
- Create another Go serverless function in GCP
- In function. go, paste this:
// Package p contains an HTTP Cloud Function.
package p
import (
"encoding/json"
"fmt"
"html"
"net/http"
"example.com/foo/Potatoes"
)
// HelloWorld prints the JSON encoded "message" field in the body
// of the request or "Hello, World!" if there isn't one.
func HelloWorld(w http.ResponseWriter, r *http.Request) {
var d struct {
Message string `json:"message"`
}
if err := json.NewDecoder(r.Body).Decode(&d); err != nil {
fmt.Fprint(w, "error here!")
return
}
if d.Message == "" {
fmt.Fprint(w, "oh boy Hello World!")
return
}
fmt.Fprint(w, html.EscapeString(d.Message))
}
- In
go.mod, paste this:module example.com/foo - In function to execute, paste this:
HelloWorld - Click on deploy. It doesn't work. You have the error:
unknown import path "example.com/foo/Potatoes": cannot find module providing package example.com/foo/Potatoes
I have also tried all kinds of combinations for the module/packages to import. I have tried without the example.com/ part.
Other smaller issue: The functions I want to reuse could all be in the same file and don't really need any trigger, but it doesn't seem that having no trigger is possible.
Related questions and documentation with which I could not achieve my goal:
