addservice

Documentation

Index

• Variables
• type AddService
  • func New(logger log.Logger, ints, chars metrics.Counter) AddService
  • func NewBasicService() AddService
• type Middleware
  • func InstrumentingMiddleware(ints, chars metrics.Counter) Middleware
  • func LoggingMiddleware(logger log.Logger) Middleware

Variables

var (
	ErrTwoZeroes       = errors.New("can't sum two zeroes")
	ErrIntOverflow     = errors.New("integer overflow")
	ErrMaxSizeExceeded = errors.New("result exceeds maximum size")
)

Types

type AddService

type AddService interface {
	Sum(ctx context.Context, a, b int) (int, error)
	Concat(ctx context.Context, a, b string) (string, error)
}

func New

func New(logger log.Logger, ints, chars metrics.Counter) AddService

func NewBasicService

func NewBasicService() AddService

type Middleware

type Middleware func(service AddService) AddService

Middleware describes a service (as opposed to endpoint) middleware.

func InstrumentingMiddleware

func InstrumentingMiddleware(ints, chars metrics.Counter) Middleware

InstrumentingMiddleware returns a service middleware that instruments the number of integers summed and characters concatenated over the lifetime of the service.

func LoggingMiddleware

func LoggingMiddleware(logger log.Logger) Middleware

LoggingMiddleware takes a logger as a dependency and returns a service Middleware.