singleton

Documentation

Index

• type Singleton
  • func NewSingleton(init SingletonInitFunc) Singleton
• type SingletonInitFunc

Types

type Singleton

type Singleton interface {
	// Return the encapsulated singleton
	Get() (interface{}, error)
}

Interface for accessing singleton objects.

Example use: var configSelectorSingleton = NewSingleton(init)

func configSelector() (configSelector, error) {
    s, err := configSelectorSingleton.Get()
    if err != nil {
        return nil, err
    }
    return s.(configSelector), nil
}

func NewSingleton

func NewSingleton(init SingletonInitFunc) Singleton

Call to create a new singleton that is instantiated with the given init function. init is not called until the first invocation of Get(). If init errors, it will be called again on the next invocation of Get().

type SingletonInitFunc

type SingletonInitFunc func() (interface{}, error)