/
provider.go
140 lines (114 loc) · 3.49 KB
/
provider.go
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package registry
import (
"fmt"
"net/url"
"github.com/asynkron/protoactor-go/actor"
"github.com/asynkron/protoactor-go/persistence"
"github.com/rs/zerolog/log"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/anypb"
"google.golang.org/protobuf/types/known/timestamppb"
persistence2 "github.com/ccamel/playground-protoactor.go/internal/persistence"
persistencev1 "github.com/ccamel/playground-protoactor.go/internal/persistence/v1"
"github.com/ccamel/playground-protoactor.go/internal/util"
)
type provider struct {
providerState persistence.ProviderState
}
func (p *provider) GetState() persistence.ProviderState {
return p.providerState
}
type storeAdapter struct {
store persistence2.Store
}
func (s *storeAdapter) GetSnapshotInterval() int {
return s.store.GetSnapshotInterval()
}
func (s *storeAdapter) GetSnapshot(actorName string) (snapshot interface{}, eventIndex int, ok bool) {
record, err := s.store.GetSnapshot(actorName)
if err != nil {
return nil, 0, false
}
message := &persistencev1.ConsiderSnapshot{
Payload: record.Payload,
}
return message, int(record.Version), true
}
func (s *storeAdapter) Restart() {
s.store.Restart()
}
func (s *storeAdapter) PersistSnapshot(actorName string, eventIndex int, snapshot proto.Message) {
payload, err := anypb.New(snapshot)
if err != nil {
log.Error().Err(err).Msg("Failed to persist snapshot")
}
entity := &persistencev1.SnapshotRecord{
Id: actorName,
Type: payload.TypeUrl,
Version: uint64(eventIndex),
StorageTimestamp: timestamppb.Now(),
Payload: payload,
}
s.store.PersistSnapshot(actorName, entity)
}
func (s *storeAdapter) DeleteSnapshots(actorName string, inclusiveToIndex int) {
s.store.DeleteSnapshots(actorName, inclusiveToIndex)
}
func (s *storeAdapter) GetEvents(actorName string, eventIndexStart int, eventIndexEnd int, callback func(e interface{})) {
callbackAdapter := func(record *persistencev1.EventRecord) {
message, err := record.Payload.UnmarshalNew()
if err != nil {
log.Error().
Err(err).
Str("id", record.Id).
Uint64("index", record.Version).
Msg("Failed to retrieve event")
}
callback(message)
}
s.store.GetEvents(actorName, eventIndexStart, eventIndexEnd, callbackAdapter)
}
func (s *storeAdapter) PersistEvent(actorName string, eventIndex int, event proto.Message) {
payload, err := anypb.New(event)
if err != nil {
log.Error().Err(err).Msg("Failed to persist event")
}
id := util.MakeULID()
entity := &persistencev1.EventRecord{
Id: id.String(),
Type: payload.TypeUrl,
StreamId: actorName,
Version: uint64(eventIndex),
StorageTimestamp: timestamppb.Now(),
Payload: payload,
}
s.store.PersistEvent(actorName, entity)
}
func (s *storeAdapter) DeleteEvents(actorName string, inclusiveToIndex int) {
s.store.DeleteEvents(actorName, inclusiveToIndex)
}
func NewProvider(system *actor.ActorSystem, uri persistence2.URI) (persistence.Provider, error) {
if uri == "" {
return nil, fmt.Errorf("persistence URI is required")
}
parsedURI, err := url.Parse(string(uri))
if err != nil {
return nil, err
}
if parsedURI.Scheme != "db" {
return nil, fmt.Errorf("invalid persistence URI: %s", uri)
}
factory, err := factories.Get(parsedURI.Scheme)
if err != nil {
return nil, err
}
store, err := factory(system, parsedURI)
if err != nil {
return nil, err
}
return &provider{
providerState: &storeAdapter{
store: store,
},
}, nil
}