Using Viper for some Go basics

create_workspace

$ mkdir useviper_workspace

$ cd useviper_workspace

useviper_workspace$ mkdir src bin pkg

go_get

useviper_workspace$ go get
can’t load package: package .: no buildable Go source files in /Users/justin/go-stuff/useviper_workspace

goinstall.sh

#!/bin/bash
if [ $# -eq 0 ]
then
    echo "go install github.com/justincalleja/useviper" && go install github.com/justincalleja/useviper
else
    echo "go install github.com/justincalleja/$1" && go install github.com/justincalleja/$1
fi

goinstall.txt

useviper_workspace$ goinstall.sh

useviper_workspace$ goinstall.sh useviper

useviper$ go install

mkdir_useviper

useviper_workspace$ mkdir -p src/github.com/justincalleja/useviper

modified_main.go

func main() {
	viper.SetConfigName("config") // name of config file (without extension)
	viper.AddConfigPath(".")      // path to look for the config file in

	err := viper.ReadInConfig()
	if err != nil {
		fmt.Println("Config not found...")
	} else {
		name := viper.GetString("name")
		fmt.Println("Config found, name = ", name)
	}
}

set_gopath

useviper_workspace$ echo $GOPATH
/Users/justin/go-stuff/useviper_workspace

useviper_workspace$ type set_gopath
set_gopath is a function
set_gopath ()
{
    export GOPATH=pwd;
    export PATH=$GOPATH/bin:$PATH
}

tree_level3

useviper_workspace$ tree -L 3
.
├── bin
│   └── useviper
├── pkg
│   └── darwin_amd64
│       ├── github.com
│       └── gopkg.in
└── src
    ├── github.com
    │   ├── BurntSushi
    │   ├── justincalleja
    │   ├── kr
    │   ├── mitchellh
    │   └── spf13
    └── gopkg.in
        └── yaml.v1

useviper.go

package main

import (
	"fmt"
	"github.com/spf13/viper"
)

func main() {
	fmt.Println("in main")
	viper.SetConfigName("config") // name of config file (without extension)
}