golang 1.8 and govendor

Golang 1.8 installation and Govendor

We'd like to talk more about govendor, since we need a individual dependency for each project.

Install Golang Package

wget https://storage.googleapis.com/golang/go1.8.3.linux-amd64.tar.gz
tar -xvf go1.8.3.linux-amd64.tar.gz
mv go /usr/local

Setup Environment

export GOROOT="/usr/local/go"
export GOPATH="/go"
export GOBIN="/go/bin"

Store Environment

export PATH=$GOPATH/bin:$GOROOT/bin:$PATH

We also export binary directory, so we can direct launch it after go-install.

root@golang183:/go/src/github.com/jj# go env
GOARCH="amd64"
GOBIN="/go/bin"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/go"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"
CXX="g++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"

Install VIM Development Environment

see my previous blog

http://gogosatellite.blogspot.tw/search?q=golang

Install Govendor

Let's started install govendor

go get -u github.com/kardianos/govendor

go to subdirectory, since we need a private package not global packages.

/go/src/github.com/jj

root@golang183:/go/src/github.com/jj# ls
a.go  vendor

It will create vendor directory.

Now let's install a package

govendor fetch gopkg.in/cheggaaa/pb.v1

Now we install pb package to vendor directory.

root@golang183:/go/src/github.com/jj# ls vendor/
github.com  gopkg.in  vendor.json

Build and Install After Govendor

Here is the source code.

package main

import (
    "gopkg.in/cheggaaa/pb.v1"
    "time"
)

func main() {
    count := 100000
    bar := pb.StartNew(count)
    for i := 0; i < count; i++ {
        bar.Increment()
        time.Sleep(time.Millisecond)
    }
    bar.FinishPrint("The End!")
}

Build and Install

root@golang183:/go/src/github.com/jj# go build
root@golang183:/go/src/github.com/jj# ls
a.go  jj  vendor

root@golang183:/go/src/github.com/jj# go install

root@golang183:/go/src/github.com/jj# which jj
/go/bin/jj

Reboot Setup

root@golang183:# cat /etc/profile.d/golang.sh
export GOROOT=/usr/local/go
export GOPATH=/go
export GOBIN=/go/bin
export GOARCH=amd64
export GOOS=linux
export PATH=$GOPATH/bin:$GOROOT/bin:$PATH

Result

Now we have a individual package dependency for each project. for example, we can have /go/src/github.com/bb project and its own vendor for building binary.