go-gently

The Go-Gently service is a Go language package to enable other Go services to gently shutdown when they receive a SIGTERM, SIGINT or SIGQUIT signal.

"Do not go gentle into that good night" -- Dylan Thomas, 1914 - 1953

While Dylan Thomas urges us not to go gentle into that good night in his famous poem, we do want our services to do just that. This library makes that possible.

 ██████╗  ██████╗        ██████╗ ███████╗███╗   ██╗████████╗██╗  ██╗   ██╗
██╔════╝ ██╔═══██╗      ██╔════╝ ██╔════╝████╗  ██║╚══██╔══╝██║  ╚██╗ ██╔╝
██║  ███╗██║   ██║█████╗██║  ███╗█████╗  ██╔██╗ ██║   ██║   ██║   ╚████╔╝ 
██║   ██║██║   ██║╚════╝██║   ██║██╔══╝  ██║╚██╗██║   ██║   ██║    ╚██╔╝  
╚██████╔╝╚██████╔╝      ╚██████╔╝███████╗██║ ╚████║   ██║   ███████╗██║   
 ╚═════╝  ╚═════╝        ╚═════╝ ╚══════╝╚═╝  ╚═══╝   ╚═╝   ╚══════╝╚═╝   
                                                                          

Usage

There are two simple steps necessary to use go-gently in a go service or application.

Step One

The first step is to implement the Gently interface on each of the structs that should be notified to stop gently. The Gently interface definition is:

// Gently is the interface a struct must implement if it wants to be registered
// to notified as to when to stop gently
type Gently interface {
	GetName() string
	StopGently(sginal os.Signal)
}

Step Two

In the main func, make the following calls:

Sample Code

    import "github.com/AndrewLader/go-gently"

    myStuct := NewMyStruct()

    goodNight := gently.New()
    goodNight.Register(myStruct)

GoodNight struct

The GoodNight struct is used to manage the structs in a Go service that implement the Gently interface. The Register method is used to register a given struct that implements the Gently interface.

// Register is used to register a struct that implements the Gently interface
// with the GoodNight struct so it can be notified when to stop gently
func (goodNight *GoodNight) Register(toBeRegistered Gently)