reflect

Documentation

Overview

Package reflect provides a simple reflection on the grpc server.

Index

• Constants
• func IsNil(v interface{}) bool
• func IsPtr(v interface{}) bool
• func IsSlice(v interface{}) bool
• func New(v interface{}) interface{}
• func NewSlicePtr(value interface{}) interface{}
• func NewValue(value interface{}) interface{}
• func NewZero(v interface{}) interface{}
• func ParseRegisterFunc(v interface{}) (grpc.ServiceDesc, interface{})
• func PtrValue(v interface{}) interface{}
• func SetPtrValue(ptr interface{}, v interface{})
• func UnwrapPtrSliceType(v interface{}) (reflect.Type, error)
• func UnwrapType(v interface{}) reflect.Type
• func UnwrapValue(v interface{}) reflect.Value
• type ServiceMethod
  • func FindServiceMethods(svc interface{}) []ServiceMethod

Constants

const (
	// ErrPtrIsNil indicates that the pointer is nil.
	ErrPtrIsNil err = "ptr is nil"
	// ErrIsNotPtr indicates that the given value is not a pointer.
	ErrIsNotPtr err = "not a pointer"
	// ErrIsNotSlice indicates that the given value is not a slice.
	ErrIsNotSlice err = "not a slice"
	// ErrIsNotFunc indicates that the given value is not a function.
	ErrIsNotFunc err = "not a function"
	// ErrIsNotRegisterFunc indicates that the given value is not a register function.
	ErrIsNotRegisterFunc err = "not a register function"
	// ErrIsNotSameType indicates that the type of the given values are not the same.
	ErrIsNotSameType err = "not same type"
	// ErrCouldNotReadServiceDesc indicates that reflect could not read the service description.
	ErrCouldNotReadServiceDesc = "could not read service description"
)

Functions

func IsNil

func IsNil(v interface{}) bool

IsNil checks whether the given value is nil.

func IsPtr

func IsPtr(v interface{}) bool

IsPtr checks whether the input is a pointer and not nil.

func IsSlice

func IsSlice(v interface{}) bool

IsSlice checks whether the input is a slice.

func New

func New(v interface{}) interface{}

New creates a pointer to a new object of a given type.

func NewSlicePtr

func NewSlicePtr(value interface{}) interface{}

NewSlicePtr creates a pointer to a slice of the pointer of the unwrapped value.

func NewValue

func NewValue(value interface{}) interface{}

NewValue creates a pointer to the unwrapped value.

func NewZero

func NewZero(v interface{}) interface{}

NewZero creates a pointer to a nil object of a given type.

func ParseRegisterFunc

func ParseRegisterFunc(v interface{}) (grpc.ServiceDesc, interface{})

ParseRegisterFunc parses te register function and returns the service description and the interface of the server.

func PtrValue

func PtrValue(v interface{}) interface{}

PtrValue ensures the value is a pointer. If it is not, a new pointer to the value is returned.

func SetPtrValue

func SetPtrValue(ptr interface{}, v interface{})

SetPtrValue sets value for a pointer.

func UnwrapPtrSliceType

func UnwrapPtrSliceType(v interface{}) (reflect.Type, error)

UnwrapPtrSliceType checks whether the given value is a pointer of a slice and return the type.

func UnwrapType

func UnwrapType(v interface{}) reflect.Type

UnwrapType returns a reflect.Type of the given input. If the type is a pointer, UnwrapType will return the underlay type.

func UnwrapValue

func UnwrapValue(v interface{}) reflect.Value

UnwrapValue returns a reflect.Value of the given input. If the value is a pointer, UnwrapValue will return the underlay value.

Types

type ServiceMethod

type ServiceMethod struct {
	Name           string
	Input          interface{}
	Output         interface{}
	IsClientStream bool
	IsServerStream bool
}

ServiceMethod provides all information about a service method.

func FindServiceMethods

func FindServiceMethods(svc interface{}) []ServiceMethod

FindServiceMethods finds all the service methods using reflection on the server.

reflect.FindServiceMethods((*grpctest.ItemServiceServer)(nil))