goconf

Configuration providers for go inspired by .net core configuration libs. Extensible and easy to use.

Supportives:

• Memory source
• Environment variables
• JSON file
• YAML file
• INI file

Features:

• Multi providers support (merge sources)
• Extensible providers support (new providers can be added easily, even only one function to implement a new provider using file from local filesystem)
• Get value by full path with key delimiter (e.g. application.bind_addr.port)
• Cast value to specialized type with TypeConversionFunc
• Bind configuration section to struct

Usage

• package: github.com/ah-its-andy/goconf

// initialize on application startup
goconf.Init(func(b goconf.Builder) {
	b.AddSource(physicalfile.Yaml(/*yaml file path, absolute or relative  both supported*/)))
     .AddSource(physicalfile.Json(/*json file path, absolute or relative  both supported*/))
     .AddSource(goconf.EnvironmentVariable(/*prefix for filter environment variables*/))
     .AddSource(goconf.Memory(/*config map*/))
})

// use it anywhere
bindAddr, ok := goconf.GetString("application.bind_addr.addr") //Get string value

bindAddrWithDefault := goconf.GetStringOrDefault("application.bind_addr.addr", "default value") //returns default value when key is not found

castValue, ok := goconf.Cast("application.bind_addr.port", goconf.IntConversion) //cast value to int

castValueWithDefault := goconf.CastOrDefault("application.bind_addr.port", 0 /*default value*/, goconf.IntConversion) //cast value to int, returns default value when key is not found

section:= gocinf.GetSection("application") //get section

var application fakeStruct.Application
err := section.Bind(&application) //bind section to struct

Refer

• github.com/mitchellh/mapstructure for binding struct
• gopkg.in/yaml.v2 for yaml file support
• github.com/stretchr/testify for testing