Decode decodes the given []byte into a tag map.

DecodeEach decodes the given serialized tag map, calling handler for each tag key and value decoded.

Delete returns a mutator that deletes the value associated with k.

Do is similar to pprof.Do: a convenience for installing the tags from the context as Go profiler labels.

Encode encodes the tag map into a []byte.

FromContext returns the tag map stored in the context.

Insert returns a mutator that inserts a value associated with k.

MustNewKey returns a key with the given name, and panics if name is an invalid key name.

New returns a new context that contains a tag map originated from the incoming context and modified with the provided mutators.

NewContext creates a new context with the given tag map.

NewKey creates or retrieves a string key identified by name.

Update returns a mutator that updates the value of the tag associated with k with v.

Upsert returns a mutator that upserts the value of the tag associated with k with v.

WithTTL applies metadata with provided ttl.

TTLNoPropagation is TTL metadata that prevents tag from propagating.

TTLUnlimitedPropagation is TTL metadata that allows tag to propagate without any limits on number of hops.

Key represents a tag key.

Map is a map of tags.

Tag is a key value pair that can be propagated on wire.

TTL is metadata that specifies number of hops a tag can propagate.

Mutator modifies a tag map.

Metadata applies metadatas specified by the function.