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Unify NostrUser and Author nodes; add migrations support
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Merged 'Author' nodes into 'NostrUser' for unified identity tracking and social graph representation. Introduced migrations framework to handle schema changes, including retroactive updates for existing relationships and constraints. Updated tests, schema definitions, and documentation to reflect these changes.
This commit is contained in:
mleku
2025-12-03 20:02:41 +00:00
parent 59247400dc
commit 52189633d9
13 changed files with 295 additions and 242 deletions
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19
pkg/neo4j/save-event.go
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@@ -84,7 +84,7 @@ func (n *N) SaveEvent(c context.Context, ev *event.E) (exists bool, err error) {
// buildEventCreationCypher constructs a Cypher query to create an event node with all relationships
// This is a single atomic operation that creates:
// - Event node with all properties
// - Author node and AUTHORED_BY relationship
// - NostrUser node and AUTHORED_BY relationship (unified author + WoT node)
// - Tag nodes and TAGGED_WITH relationships
// - Reference relationships (REFERENCES for 'e' tags, MENTIONS for 'p' tags)
func (n *N) buildEventCreationCypher(ev *event.E, serial uint64) (string, map[string]any) {
@@ -124,10 +124,12 @@ func (n *N) buildEventCreationCypher(ev *event.E, serial uint64) (string, map[st
params["tags"] = string(tagsJSON)
// Start building the Cypher query
// Use MERGE to ensure idempotency for author nodes
// Use MERGE to ensure idempotency for NostrUser nodes
// NostrUser serves both NIP-01 author tracking and WoT social graph
cypher := `
// Create or match author node
MERGE (a:Author {pubkey: $pubkey})
// Create or match NostrUser node (unified author + social graph)
MERGE (a:NostrUser {pubkey: $pubkey})
ON CREATE SET a.created_at = timestamp(), a.first_seen_event = $eventId
// Create event node with expiration for NIP-40 support
CREATE (e:Event {
@@ -212,15 +214,16 @@ FOREACH (ignoreMe IN CASE WHEN ref%d IS NOT NULL THEN [1] ELSE [] END |
continue // Skip invalid p-tags
}
// Create mention to another author
// Create mention to another NostrUser
paramName := fmt.Sprintf("pTag_%d", pTagIndex)
params[paramName] = tagValue
cypher += fmt.Sprintf(`
// Mention of author (p-tag)
MERGE (mentioned%d:Author {pubkey: $%s})
// Mention of NostrUser (p-tag)
MERGE (mentioned%d:NostrUser {pubkey: $%s})
ON CREATE SET mentioned%d.created_at = timestamp()
CREATE (e)-[:MENTIONS]->(mentioned%d)
`, pTagIndex, paramName, pTagIndex)
`, pTagIndex, paramName, pTagIndex, pTagIndex)
pTagIndex++