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change in parameterized replaceable handling

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This commit is contained in:
Chris kerr 2024-09-18 19:51:53 -04:00
parent 33706b4200
commit 1ce4d892d3
1 changed files with 17 additions and 1 deletions
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18
server/db/mongo/kinds/replaceableParameters.go
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@ -12,7 +12,9 @@ import (
"golang.org/x/net/websocket" "golang.org/x/net/websocket"
) )
// HandleParameterizedReplaceableKind handles parameterized replaceable events based on NIP-01 rules
func HandleParameterizedReplaceableKind(ctx context.Context, evt relay.Event, collection *mongo.Collection, ws *websocket.Conn) error { func HandleParameterizedReplaceableKind(ctx context.Context, evt relay.Event, collection *mongo.Collection, ws *websocket.Conn) error {
// Step 1: Find dTag from the event's tags
var dTag string var dTag string
for _, tag := range evt.Tags { for _, tag := range evt.Tags {
if len(tag) > 0 && tag[0] == "d" { if len(tag) > 0 && tag[0] == "d" {
@ -20,20 +22,34 @@ func HandleParameterizedReplaceableKind(ctx context.Context, evt relay.Event, co
break break
} }
} }
// Step 2: Create filter to find the existing event based on pubkey, kind, and dTag
filter := bson.M{"pubkey": evt.PubKey, "kind": evt.Kind, "tags.d": dTag} filter := bson.M{"pubkey": evt.PubKey, "kind": evt.Kind, "tags.d": dTag}
// Step 3: Find the existing event from the database
var existingEvent relay.Event var existingEvent relay.Event
err := collection.FindOne(ctx, filter).Decode(&existingEvent) err := collection.FindOne(ctx, filter).Decode(&existingEvent)
if err != nil && err != mongo.ErrNoDocuments { if err != nil && err != mongo.ErrNoDocuments {
return fmt.Errorf("error finding existing event: %v", err) return fmt.Errorf("error finding existing event: %v", err)
} }
// Step 4: Handle event replacement logic (NIP-01 rules)
// If we found an existing event and the new event is older, reject the update
if err != mongo.ErrNoDocuments { if err != mongo.ErrNoDocuments {
if existingEvent.CreatedAt > evt.CreatedAt || (existingEvent.CreatedAt == evt.CreatedAt && existingEvent.ID < evt.ID) { if existingEvent.CreatedAt > evt.CreatedAt || (existingEvent.CreatedAt == evt.CreatedAt && existingEvent.ID < evt.ID) {
response.SendOK(ws, evt.ID, false, "blocked: relay already has a newer event for this pubkey and d tag") response.SendOK(ws, evt.ID, false, "blocked: relay already has a newer event for this pubkey and dTag")
return nil return nil
} }
// Step 5: Delete the older event if the new event is valid
_, err := collection.DeleteOne(ctx, bson.M{"_id": existingEvent.ID})
if err != nil {
return fmt.Errorf("error deleting the older event: %v", err)
}
fmt.Printf("Deleted older event with ID: %s\n", existingEvent.ID)
} }
// Step 6: Upsert the new event (insert if not existing, or update if newer)
opts := options.Update().SetUpsert(true) opts := options.Update().SetUpsert(true)
update := bson.M{ update := bson.M{
"$set": evt, "$set": evt,