/
remove.go
88 lines (80 loc) · 2.71 KB
/
remove.go
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package mongodb
import (
"context"
"fmt"
"github.com/hashicorp/go-multierror"
"github.com/plgd-dev/hub/v2/resource-aggregate/cqrs/eventstore"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo/options"
)
// remove all documents which has latest version less than the version
func (s *EventStore) removeDocumentsUpToVersion(ctx context.Context, queries []eventstore.VersionQuery) error {
var errors *multierror.Error
queryResolver := newQueryResolver(signOperator_lt)
for _, q := range queries {
err := queryResolver.set(q)
if err != nil {
errors = multierror.Append(errors, fmt.Errorf("cannot remove events version for query('%+v'): %w", q, err))
continue
}
}
filter, hint := queryResolver.toMongoQuery(latestVersionKey)
opts := options.Delete()
opts.SetHint(hint)
_, err := s.client().Database(s.DBName()).Collection(getEventCollectionName()).DeleteMany(ctx, filter, opts)
if err != nil {
errors = multierror.Append(errors, err)
}
return errors.ErrorOrNil()
}
// pull events from documents which has first version less than the version
func (s *EventStore) removeEventsUpToVersion(ctx context.Context, queries []eventstore.VersionQuery) error {
var errors *multierror.Error
for _, q := range queries {
queryResolver := newQueryResolver(signOperator_lt)
err := queryResolver.set(q)
if err != nil {
errors = multierror.Append(errors, fmt.Errorf("cannot pull events version for query('%+v'): %w", q, err))
continue
}
filter, hint := queryResolver.toMongoQuery(firstVersionKey)
updOpts := options.Update()
updOpts.SetHint(hint)
_, err = s.client().Database(s.DBName()).Collection(getEventCollectionName()).UpdateMany(ctx, filter, bson.M{
"$set": bson.M{
firstVersionKey: q.Version,
},
"$pull": bson.M{
eventsKey: bson.M{
versionKey: bson.M{
"$lt": q.Version,
},
},
},
}, updOpts)
if err != nil {
errors = multierror.Append(errors, err)
continue
}
}
return errors.ErrorOrNil()
}
// RemoveUpToVersion deletes the aggregated events up to a specific version.
func (s *EventStore) RemoveUpToVersion(ctx context.Context, versionQueries []eventstore.VersionQuery) error {
normalizedVersionQueries := make(map[string][]eventstore.VersionQuery)
for _, query := range versionQueries {
normalizedVersionQueries[query.GroupID] = append(normalizedVersionQueries[query.GroupID], query)
}
var errors *multierror.Error
for _, queries := range normalizedVersionQueries {
if err := s.removeDocumentsUpToVersion(ctx, queries); err != nil {
errors = multierror.Append(errors, err)
continue
}
if err := s.removeEventsUpToVersion(ctx, queries); err != nil {
errors = multierror.Append(errors, err)
continue
}
}
return errors.ErrorOrNil()
}