kubernetes/vendor/github.com/containerd/ttrpc/metadata.go

type MD …

// Get returns the metadata for a given key when they exist.
// If there is no metadata, a nil slice and false are returned.
func (m MD) Get(key string) ([]string, bool) { … }

// Set sets the provided values for a given key.
// The values will overwrite any existing values.
// If no values provided, a key will be deleted.
func (m MD) Set(key string, values ...string) { … }

// Append appends additional values to the given key.
func (m MD) Append(key string, values ...string) { … }

func (m MD) setRequest(r *Request) { … }

func (m MD) fromRequest(r *Request) { … }

type metadataKey …

// GetMetadata retrieves metadata from context.Context (previously attached with WithMetadata)
func GetMetadata(ctx context.Context) (MD, bool) { … }

// GetMetadataValue gets a specific metadata value by name from context.Context
func GetMetadataValue(ctx context.Context, name string) (string, bool) { … }

// WithMetadata attaches metadata map to a context.Context
func WithMetadata(ctx context.Context, md MD) context.Context { … }