zitadel/internal/eventstore/event_base.go

130 lines
2.9 KiB
Go

package eventstore
import (
"context"
"encoding/json"
"time"
"github.com/zitadel/zitadel/internal/api/authz"
"github.com/zitadel/zitadel/internal/api/service"
)
var (
_ Event = (*BaseEvent)(nil)
)
// BaseEvent represents the minimum metadata of an event
type BaseEvent struct {
ID string
EventType EventType `json:"-"`
Agg *Aggregate
Seq uint64
Pos float64
Creation time.Time
previousAggregateSequence uint64
previousAggregateTypeSequence uint64
//User who created the event
User string `json:"-"`
//Service which created the event
Service string `json:"-"`
Data []byte `json:"-"`
}
// Position implements Event.
func (e *BaseEvent) Position() float64 {
return e.Pos
}
// EditorService implements Command
func (e *BaseEvent) EditorService() string {
return e.Service
}
// EditorUser implements Command
func (e *BaseEvent) EditorUser() string {
return e.User
}
// Creator implements action
func (e *BaseEvent) Creator() string {
return e.EditorUser()
}
// Type implements action
func (e *BaseEvent) Type() EventType {
return e.EventType
}
// Sequence is an upcounting unique number of the event
func (e *BaseEvent) Sequence() uint64 {
return e.Seq
}
// CreationDate is the the time, the event is inserted into the eventstore
func (e *BaseEvent) CreationDate() time.Time {
return e.Creation
}
// CreatedAt implements Event
func (e *BaseEvent) CreatedAt() time.Time {
return e.CreationDate()
}
// Aggregate implements action
func (e *BaseEvent) Aggregate() *Aggregate {
return e.Agg
}
// Data returns the payload of the event. It represent the changed fields by the event
func (e *BaseEvent) DataAsBytes() []byte {
return e.Data
}
// Revision implements action
func (*BaseEvent) Revision() uint16 {
return 0
}
// Unmarshal implements Event
func (e *BaseEvent) Unmarshal(ptr any) error {
if len(e.Data) == 0 {
return nil
}
return json.Unmarshal(e.Data, ptr)
}
const defaultService = "zitadel"
// BaseEventFromRepo maps a stored event to a BaseEvent
func BaseEventFromRepo(event Event) *BaseEvent {
return &BaseEvent{
Agg: event.Aggregate(),
EventType: event.Type(),
Creation: event.CreatedAt(),
Seq: event.Sequence(),
Service: defaultService,
User: event.Creator(),
Data: event.DataAsBytes(),
Pos: event.Position(),
}
}
// NewBaseEventForPush is the constructor for event's which will be pushed into the eventstore
// the resource owner of the aggregate is only used if it's the first event of this aggregate type
// afterwards the resource owner of the first previous events is taken
func NewBaseEventForPush(ctx context.Context, aggregate *Aggregate, typ EventType) *BaseEvent {
return &BaseEvent{
Agg: aggregate,
User: authz.GetCtxData(ctx).UserID,
Service: service.FromContext(ctx),
EventType: typ,
}
}
func (*BaseEvent) Fields() []*FieldOperation {
return nil
}