Identity (TypeID)

Every entity in Relay has a TypeID. TypeIDs are globally unique, sortable, URL-safe identifiers built on UUIDv7 with a human-readable prefix that tells you what kind of entity you're looking at.

A TypeID looks like this:

evt_01h455vb4pex5vsknk084sn02q

The evt prefix identifies this as an event. The suffix is a base32-encoded UUIDv7 that encodes creation time, so IDs sort chronologically.

The id package

The id package wraps the TypeID Go library (v2) with a single ID struct. All entity types share the same struct -- the prefix distinguishes them.

Creating IDs

import "github.com/xraph/relay/id"

eventTypeID := id.New(id.PrefixEventType)  // evtype_01h455vb...
endpointID  := id.New(id.PrefixEndpoint)   // ep_01h455vb...
eventID     := id.New(id.PrefixEvent)      // evt_01h455vb...

Convenience constructors: id.NewEventTypeID(), id.NewEndpointID(), id.NewEventID(), id.NewDeliveryID(), id.NewDLQID(), id.NewSecretID().

Parsing IDs

parsed, err := id.Parse("evt_01h455vb4pex5vsknk084sn02q")
parsed, err := id.ParseWithPrefix("evt_01h455vb...", id.PrefixEvent)  // validates prefix
parsed, err := id.ParseEventID("evt_01h455vb...")                     // convenience

Nil ID

var empty id.ID
empty.IsNil()  // true
empty.String() // ""
id.Nil.IsNil() // true

Database storage

id.ID implements Scanner and driver.Valuer. Stores as a string, returns NULL for nil IDs.

JSON serialization

id.ID implements TextMarshaler and TextUnmarshaler. Nil IDs serialize as empty strings.

Prefix reference