discovery

Documentation

Index

• Variables
• func IsExist(err error) bool
• func Register(driverName string, driver Driver)
• type Discovery
  • func Open(driverName, source string) (Discovery, error)
• type Driver

Variables

var ErrExist = errors.New("discovery: id exist")

ErrExist represents an error in case of id already existed.

Functions

func IsExist

func IsExist(err error) bool

IsExist reports whether the err is ErrExist

func Register

func Register(driverName string, driver Driver)

Register makes a discovery driver available by the provided name

Types

type Discovery

type Discovery interface {
	// Register registers a service, if nx is true, the id must not exist.
	// Otherwise, ErrExist returned. If ttl > 0, the service has a expires time.
	Register(ctx context.Context, name, id, content string, nx bool, ttl time.Duration) error
	// Unregister unregisters a service
	Unregister(ctx context.Context, name, id string) error
	// Find finds service by name and id
	Find(ctx context.Context, name, id string) (content string, err error)
	// Resolve resolves any one service by name
	Resolve(ctx context.Context, name string) (id, content string, err error)
	// Resolve resolves all services by name
	ResolveAll(ctx context.Context, name string) (map[string]string, error)
}

Discovery represents a interface for service discovery

func Open

func Open(driverName, source string) (Discovery, error)

Open opens a discovery specified by its discovery driver name and a driver-specific source.

type Driver

type Driver interface {
	// Open returns a new discovery instance by a driver-specific source name
	Open(source string) (Discovery, error)
}

Driver is the interface that must be implemented by a discovery driver