config

README

Config

Go Config is a pluggable dynamic config library.

Most config in applications are statically configured or include complex logic to load from multiple sources. Go Config makes this easy, pluggable and mergeable. You'll never have to deal with config in the same way again.

Features

• Dynamic - load config on the fly as you need it
• Pluggable - choose which source to load from; file, env, consul
• Mergeable - merge and override multiple config sources
• Observable - Watch the config for changes
• Safe - specify fallback values where keys don't exist

Getting Started

For detailed information or architecture, installation and general usage see the docs

Documentation

Overview

Package config is an interface for dynamic configuration.

Index

• Variables
• func Bytes() []byte
• func Get(path ...string) reader.Value
• func Load(source ...source.Source) error
• func Map() map[string]interface{}
• func Scan(v interface{}) error
• func Sync() error
• type Config
  • func NewConfig(opts ...Option) Config
• type Option
  • func WithLoader(l loader.Loader) Option
  • func WithReader(r reader.Reader) Option
  • func WithSource(s source.Source) Option
• type Options
• type Watcher
  • func Watch(path ...string) (Watcher, error)

Variables

var (
	// Default Config Manager
	DefaultConfig = NewConfig()
)

Functions

func Bytes

func Bytes() []byte

Return config as raw json

func Get

func Get(path ...string) reader.Value

Get a value from the config

func Load

func Load(source ...source.Source) error

Load config sources

func Map

func Map() map[string]interface{}

Return config as a map

func Scan

func Scan(v interface{}) error

Scan values to a go type

func Sync

func Sync() error

Force a source changeset sync

Types

type Config

type Config interface {
	// provide the reader.Values interface
	reader.Values
	// Stop the config loader/watcher
	Close() error
	// Load config sources
	Load(source ...source.Source) error
	// Force a source changeset sync
	Sync() error
	// Watch a value for changes
	Watch(path ...string) (Watcher, error)
}

Config is an interface abstraction for dynamic configuration

func NewConfig

func NewConfig(opts ...Option) Config

NewConfig returns new config

type Option

type Option func(o *Options)

func WithLoader

func WithLoader(l loader.Loader) Option

WithLoader sets the loader for manager config

func WithReader

func WithReader(r reader.Reader) Option

WithReader sets the config reader

func WithSource

func WithSource(s source.Source) Option

WithSource appends a source to list of sources

type Options

type Options struct {
	Loader loader.Loader
	Reader reader.Reader
	Source []source.Source

	// for alternative data
	Context context.Context
}

type Watcher

type Watcher interface {
	Next() (reader.Value, error)
	Stop() error
}

Watcher is the config watcher

func Watch

func Watch(path ...string) (Watcher, error)

Watch a value for changes