metadata

Documentation

Index

• func AppendToRequestContext(ctx context.Context, kv ...string) context.Context
• func MergeToRequestContext(ctx context.Context, cmd Metadata) context.Context
• func NewRequestContext(ctx context.Context, md Metadata) context.Context
• type Metadata
  • func FromRequestContext(ctx context.Context) (Metadata, bool)
  • func New(mds ...map[string]string) Metadata
  • func (m Metadata) Clone() Metadata
  • func (m Metadata) Get(key string) string
  • func (m Metadata) Range(f func(k, v string) bool)
  • func (m Metadata) Set(key string, value string)

Functions

func AppendToRequestContext

func AppendToRequestContext(ctx context.Context, kv ...string) context.Context

AppendToRequestContext returns a new context with the provided kv merged with any existing metadata in the context.

func MergeToRequestContext

func MergeToRequestContext(ctx context.Context, cmd Metadata) context.Context

MergeToRequestContext merge new metadata into ctx.

func NewRequestContext

func NewRequestContext(ctx context.Context, md Metadata) context.Context

NewRequestContext creates a new context with request md attached.

Types

type Metadata

type Metadata map[string]string

Metadata is our way of representing request headers internally. They're used at the RPC level and translate back and forth from Transport headers.

func FromRequestContext

func FromRequestContext(ctx context.Context) (Metadata, bool)

FromRequestContext returns the request metadata in ctx if it exists.

func New

func New(mds ...map[string]string) Metadata

New creates an MD from a given key-values map.

func (Metadata) Clone

func (m Metadata) Clone() Metadata

Clone returns a deep copy of Metadata

func (Metadata) Get

func (m Metadata) Get(key string) string

Get returns the value associated with the passed key.

func (Metadata) Range

func (m Metadata) Range(f func(k, v string) bool)

Range iterate over element in metadata.

func (Metadata) Set

func (m Metadata) Set(key string, value string)

Set stores the key-value pair.