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b522588d98
# Which Problems Are Solved Float64 which was used for the event.Position field is [not precise in go and gets rounded](https://github.com/golang/go/issues/47300). This can lead to unprecies position tracking of events and therefore projections especially on cockcoachdb as the position used there is a big number. example of a unprecies position: exact: 1725257931223002628 float64: 1725257931223002624.000000 # How the Problems Are Solved The float64 was replaced by [github.com/jackc/pgx-shopspring-decimal](https://github.com/jackc/pgx-shopspring-decimal). # Additional Changes Correct behaviour of makefile for load tests. Rename `latestSequence`-queries to `latestPosition`
132 lines
3.0 KiB
Go
132 lines
3.0 KiB
Go
package eventstore
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import (
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"context"
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"encoding/json"
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"time"
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"github.com/shopspring/decimal"
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"github.com/zitadel/zitadel/internal/api/authz"
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"github.com/zitadel/zitadel/internal/api/service"
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)
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var (
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_ Event = (*BaseEvent)(nil)
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)
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// BaseEvent represents the minimum metadata of an event
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type BaseEvent struct {
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ID string
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EventType EventType `json:"-"`
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Agg *Aggregate
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Seq uint64
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Pos decimal.Decimal
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Creation time.Time
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previousAggregateSequence uint64
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previousAggregateTypeSequence uint64
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//User who created the event
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User string `json:"-"`
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//Service which created the event
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Service string `json:"-"`
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Data []byte `json:"-"`
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}
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// Position implements Event.
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func (e *BaseEvent) Position() decimal.Decimal {
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return e.Pos
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}
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// EditorService implements Command
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func (e *BaseEvent) EditorService() string {
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return e.Service
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}
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// EditorUser implements Command
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func (e *BaseEvent) EditorUser() string {
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return e.User
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}
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// Creator implements action
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func (e *BaseEvent) Creator() string {
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return e.EditorUser()
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}
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// Type implements action
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func (e *BaseEvent) Type() EventType {
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return e.EventType
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}
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// Sequence is an upcounting unique number of the event
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func (e *BaseEvent) Sequence() uint64 {
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return e.Seq
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}
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// CreationDate is the the time, the event is inserted into the eventstore
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func (e *BaseEvent) CreationDate() time.Time {
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return e.Creation
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}
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// CreatedAt implements Event
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func (e *BaseEvent) CreatedAt() time.Time {
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return e.CreationDate()
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}
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// Aggregate implements action
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func (e *BaseEvent) Aggregate() *Aggregate {
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return e.Agg
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}
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// Data returns the payload of the event. It represent the changed fields by the event
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func (e *BaseEvent) DataAsBytes() []byte {
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return e.Data
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}
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// Revision implements action
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func (*BaseEvent) Revision() uint16 {
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return 0
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}
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// Unmarshal implements Event
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func (e *BaseEvent) Unmarshal(ptr any) error {
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if len(e.Data) == 0 {
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return nil
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}
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return json.Unmarshal(e.Data, ptr)
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}
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const defaultService = "zitadel"
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// BaseEventFromRepo maps a stored event to a BaseEvent
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func BaseEventFromRepo(event Event) *BaseEvent {
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return &BaseEvent{
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Agg: event.Aggregate(),
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EventType: event.Type(),
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Creation: event.CreatedAt(),
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Seq: event.Sequence(),
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Service: defaultService,
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User: event.Creator(),
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Data: event.DataAsBytes(),
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Pos: event.Position(),
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}
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}
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// NewBaseEventForPush is the constructor for event's which will be pushed into the eventstore
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// the resource owner of the aggregate is only used if it's the first event of this aggregate type
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// afterwards the resource owner of the first previous events is taken
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func NewBaseEventForPush(ctx context.Context, aggregate *Aggregate, typ EventType) *BaseEvent {
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return &BaseEvent{
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Agg: aggregate,
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User: authz.GetCtxData(ctx).UserID,
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Service: service.FromContext(ctx),
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EventType: typ,
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}
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}
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func (*BaseEvent) Fields() []*FieldOperation {
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return nil
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}
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