metadata

package

v0.0.0-...-3cc3ff2 Latest Latest Go to latest Published: May 17, 2021 License: MIT Imports: 8 Imported by: 0

Details

Valid go.mod file

The Go module system was introduced in Go 1.11 and is the official dependency management solution for Go.
Redistributable license

Redistributable licenses place minimal restrictions on how software can be used, modified, and redistributed.
Tagged version

Modules with tagged versions give importers more predictable builds.
Stable version

When a project reaches major version v1 it is considered stable.
Learn more about best practices

Package metadata allows for the definition of metadata such as headers

This section is empty.

This section is empty.

func Get(ctx context.Context, key string) (string, bool)

Get returns a single value from metadata in the context

func MergeContext(ctx context.Context, patchMd MD, overwrite bool) context.Context

MergeContext merges metadata to existing metadata, overwriting if specified

func NewContext(ctx context.Context, md MD) context.Context

NewContext creates a new context with the given metadata

type MD map[string]string

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

func Copy(md MD) MD

Copy makes a copy of the metadata

func FromContext(ctx context.Context) (MD, bool)

FromContext returns metadata from the given context

func (md MD) Append(append MD)

Append appends the given md

type Manager struct {
	Context  *broker.Context
	Resource string
	Params   specs.Header
	Keys     map[string]struct{}
}

Manager represents a metadata manager for a given resource

func NewManager(ctx *broker.Context, resource string, params specs.Header) *Manager

NewManager constructs a new metadata manager for the given resource.

func (manager *Manager) Marshal(store references.Store) MD

Marshal attempts to marshal the given metadata specs from the given refs store

func (manager *Manager) Unmarshal(metadata MD, store references.Store)

Unmarshal unmarshals the given transport metadata into the given reference store