[Bug]: Module not imported after following the guide

Question

[Bug]: Module not imported after following the guide

p3tr0v opened this issue a year ago · comments

What happened?

Even following the Starting guide, the module is not imported to project.

Steps to reproduce in your go workspace:
$ mkdir plcproject
$ go mod init
$ go mod tidy
$ go work use .
create main.go file with your IDE
$ go get github.com/apache/plc4x/plc4go
I can see ~/go/pkg/mod/github.com/apache/plc4/plc4go@v0.10.0
Then after following the guide with
driverManager := plc4go.NewPlcDriverManager()
It just cant find/import the module

go.mod

module plcproject

go 1.20

require github.com/apache/plc4x/plc4go v0.0.0-20230829070645-b2f3acb97b3b // indirect

In the project I can import any module from my go/pkg/mod/github.com directory, but plc4go cant be imported, why?

Version

v0.10.0

Programming Languages

plc4j
plc4go
plc4c
plc4net

Protocols

p3tr0v commented a year ago

reopening

Sebastian Rühl · Answer 1 · Wed Aug 30 2023 13:43:11 GMT+0800 (China Standard Time)

what does your import statement look like in the main.go? Can you post the code of that file?

Sebastian Rühl · Answer 2 · Wed Aug 30 2023 13:54:18 GMT+0800 (China Standard Time)

delete the go.work and use this main.go:

package main

import plc4go "github.com/apache/plc4x/plc4go/pkg/api"

func main() {
  driverManager := plc4go.NewPlcDriverManager()
  println(driverManager)
}

It should output this when run with that go run main.go:

$ go run main.go
{"level":"trace","time":"2023-08-30T07:51:07+02:00","message":"Creating plc driver manager"}

Sebastian Rühl · Answer 3 · Wed Aug 30 2023 13:55:09 GMT+0800 (China Standard Time)

and what starting guide are you referring to?

p3tr0v · Answer 4 · Wed Aug 30 2023 20:20:03 GMT+0800 (China Standard Time)

what does your import statement look like in the main.go? Can you post the code of that file?

thanks for your time!
The main is simple, when trying to code, VScode just dont find the module.

If I try to force the import, I got this

My go env

GO111MODULE="on"
GOARCH="amd64"
GOBIN="/opt/golang/current/bin"
GOCACHE="/opt/golang/current/gocache/go-build"
GOENV="/home/user/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/user/dev/projects/golang-workspace/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/user/dev/projects/golang-workspace"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/opt/golang/current"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/opt/golang/current/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.20.5"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
GOWORK=""
CGO_CFLAGS="-O2 -g"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-O2 -g"
CGO_FFLAGS="-O2 -g"
CGO_LDFLAGS="-O2 -g"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build2976824462=/tmp/go-build -gno-record-gcc-switches"

whatever other project I can import from ~/go/pkg/mod/github.com, so the problem isn't the IDE.

Why should I delete go.work? Even without this file, the issue persists.

and what starting guide are you referring to?

https://plc4x.apache.org/users/getting-started/plc4go.html

Sebastian Rühl · Answer 5 · Wed Aug 30 2023 20:39:21 GMT+0800 (China Standard Time)

I could not get it working with the go.work and I don't know what it does. So if I follow your steps without the go work use . (which doesn't work if you strictly follow your steps) I can't reproduce your issue.
Do the following:

go to tmp cd /tmp
make your folder mkdir plcproject
go into your folder cd plcproject
init the module go mod init plcproject
do a tidy go mod tidy
get plc4go go get github.com/apache/plc4x/plc4go
paste the main.go I posted above #1089 (comment): vi main.go
do a tidy go mod tidy
run the main go run main.go

Sebastian Rühl · Answer 6 · Wed Aug 30 2023 20:41:16 GMT+0800 (China Standard Time)

(also I might update the documentation if I find some time or create a PR if you want integrating the steps I posted above)

p3tr0v · Answer 7 · Wed Aug 30 2023 22:02:04 GMT+0800 (China Standard Time)

p3tr0v commented a year ago

p3tr0v · Answer 8 · Wed Aug 30 2023 22:02:48 GMT+0800 (China Standard Time)

sorry, im not familiar with github, always when i post something, it close the issue, reopening again

Sebastian Rühl · Answer 9 · Wed Aug 30 2023 22:06:25 GMT+0800 (China Standard Time)

You can see it works for you. The pcap error is because you need pcap on your system

Sebastian Rühl · Answer 10 · Wed Aug 30 2023 22:08:09 GMT+0800 (China Standard Time)

try apt-get install libpcap if you are on a ubuntu system. Guess we need to update the documentation.

p3tr0v · Answer 11 · Wed Aug 30 2023 22:17:48 GMT+0800 (China Standard Time)

apt-get install libpcap

Got success after installing.

But I have to understand why without go.work, from my golang workspace projects, my IDE still saying it:

Doesnt make sense to me..... any idea?

Sebastian Rühl · Answer 12 · Wed Aug 30 2023 22:19:08 GMT+0800 (China Standard Time)

no sorry can't help you with that :(

p3tr0v · Answer 13 · Wed Aug 30 2023 22:19:46 GMT+0800 (China Standard Time)

thank you for your time.