instance

Documentation

Overview

Package instance provides instances management.

Note that this package is not used for cache, as it has no cache expiration.

Index

• func Clear()
• func Get(name string) interface{}
• func GetOrSet(name string, instance interface{}) interface{}
• func GetOrSetFunc(name string, f func() interface{}) interface{}
• func GetOrSetFuncLock(name string, f func() interface{}) interface{}
• func Set(name string, instance interface{})
• func SetIfNotExist(name string, instance interface{}) bool

Functions

func Clear

func Clear()

Clear deletes all instances stored.

func Get

func Get(name string) interface{}

Get returns the instance by given name.

func GetOrSet

func GetOrSet(name string, instance interface{}) interface{}

GetOrSet returns the instance by name, or set instance to the instance manager if it does not exist and returns this instance.

func GetOrSetFunc

func GetOrSetFunc(name string, f func() interface{}) interface{}

GetOrSetFunc returns the instance by name, or sets instance with returned value of callback function `f` if it does not exist and then returns this instance.

func GetOrSetFuncLock

func GetOrSetFuncLock(name string, f func() interface{}) interface{}

GetOrSetFuncLock returns the instance by name, or sets instance with returned value of callback function `f` if it does not exist and then returns this instance.

GetOrSetFuncLock differs with GetOrSetFunc function is that it executes function `f` with mutex.Lock of the hash map.

func Set

func Set(name string, instance interface{})

Set sets an instance to the instance manager with given name.

func SetIfNotExist

func SetIfNotExist(name string, instance interface{}) bool

SetIfNotExist sets `instance` to the map if the `name` does not exist, then returns true. It returns false if `name` exists, and `instance` would be ignored.