201 lines
9.1 KiB
Go
201 lines
9.1 KiB
Go
package neo4j
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import (
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"context"
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"fmt"
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)
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// applySchema creates Neo4j constraints and indexes for Nostr events
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// Neo4j uses Cypher queries to define schema constraints and indexes
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// Includes both base Nostr relay schema and optional WoT extensions
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func (n *N) applySchema(ctx context.Context) error {
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n.Logger.Infof("applying Nostr schema to neo4j")
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// Create constraints and indexes using Cypher queries
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// Constraints ensure uniqueness and are automatically indexed
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constraints := []string{
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// === Base Nostr Relay Schema (NIP-01 Queries) ===
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// Unique constraint on Event.id (event ID must be unique)
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"CREATE CONSTRAINT event_id_unique IF NOT EXISTS FOR (e:Event) REQUIRE e.id IS UNIQUE",
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// Unique constraint on Author.pubkey (author public key must be unique)
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// Note: Author nodes are for NIP-01 query support (REQ filters)
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"CREATE CONSTRAINT author_pubkey_unique IF NOT EXISTS FOR (a:Author) REQUIRE a.pubkey IS UNIQUE",
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// Unique constraint on Marker.key (marker key must be unique)
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"CREATE CONSTRAINT marker_key_unique IF NOT EXISTS FOR (m:Marker) REQUIRE m.key IS UNIQUE",
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// === Social Graph Event Processing Schema ===
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// Unique constraint on ProcessedSocialEvent.event_id
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// Tracks which social events (kinds 0, 3, 1984, 10000) have been processed
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"CREATE CONSTRAINT processedSocialEvent_event_id IF NOT EXISTS FOR (e:ProcessedSocialEvent) REQUIRE e.event_id IS UNIQUE",
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// === WoT Extension Schema ===
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// Unique constraint on NostrUser.pubkey
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// Note: NostrUser nodes are for social graph/WoT (separate from Author nodes)
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"CREATE CONSTRAINT nostrUser_pubkey IF NOT EXISTS FOR (n:NostrUser) REQUIRE n.pubkey IS UNIQUE",
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// Unique constraint on SetOfNostrUserWotMetricsCards.observee_pubkey
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"CREATE CONSTRAINT setOfNostrUserWotMetricsCards_observee_pubkey IF NOT EXISTS FOR (n:SetOfNostrUserWotMetricsCards) REQUIRE n.observee_pubkey IS UNIQUE",
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// Unique constraint on NostrUserWotMetricsCard (customer_id, observee_pubkey)
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"CREATE CONSTRAINT nostrUserWotMetricsCard_unique_combination_1 IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) REQUIRE (n.customer_id, n.observee_pubkey) IS UNIQUE",
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// Unique constraint on NostrUserWotMetricsCard (observer_pubkey, observee_pubkey)
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"CREATE CONSTRAINT nostrUserWotMetricsCard_unique_combination_2 IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) REQUIRE (n.observer_pubkey, n.observee_pubkey) IS UNIQUE",
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}
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// Additional indexes for query optimization
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indexes := []string{
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// === Base Nostr Relay Indexes ===
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// Index on Event.kind for kind-based queries
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"CREATE INDEX event_kind IF NOT EXISTS FOR (e:Event) ON (e.kind)",
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// Index on Event.created_at for time-range queries
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"CREATE INDEX event_created_at IF NOT EXISTS FOR (e:Event) ON (e.created_at)",
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// Index on Event.serial for serial-based lookups
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"CREATE INDEX event_serial IF NOT EXISTS FOR (e:Event) ON (e.serial)",
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// Composite index for common query patterns (kind + created_at)
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"CREATE INDEX event_kind_created_at IF NOT EXISTS FOR (e:Event) ON (e.kind, e.created_at)",
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// Index on Tag.type for tag-type queries
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"CREATE INDEX tag_type IF NOT EXISTS FOR (t:Tag) ON (t.type)",
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// Index on Tag.value for tag-value queries
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"CREATE INDEX tag_value IF NOT EXISTS FOR (t:Tag) ON (t.value)",
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// Composite index for tag queries (type + value)
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"CREATE INDEX tag_type_value IF NOT EXISTS FOR (t:Tag) ON (t.type, t.value)",
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// === Social Graph Event Processing Indexes ===
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// Index on ProcessedSocialEvent for quick lookup by pubkey and kind
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"CREATE INDEX processedSocialEvent_pubkey_kind IF NOT EXISTS FOR (e:ProcessedSocialEvent) ON (e.pubkey, e.event_kind)",
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// Index on ProcessedSocialEvent.superseded_by to filter active events
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"CREATE INDEX processedSocialEvent_superseded IF NOT EXISTS FOR (e:ProcessedSocialEvent) ON (e.superseded_by)",
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// === WoT Extension Indexes ===
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// NostrUser indexes for trust metrics
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"CREATE INDEX nostrUser_hops IF NOT EXISTS FOR (n:NostrUser) ON (n.hops)",
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"CREATE INDEX nostrUser_personalizedPageRank IF NOT EXISTS FOR (n:NostrUser) ON (n.personalizedPageRank)",
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"CREATE INDEX nostrUser_influence IF NOT EXISTS FOR (n:NostrUser) ON (n.influence)",
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"CREATE INDEX nostrUser_verifiedFollowerCount IF NOT EXISTS FOR (n:NostrUser) ON (n.verifiedFollowerCount)",
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"CREATE INDEX nostrUser_verifiedMuterCount IF NOT EXISTS FOR (n:NostrUser) ON (n.verifiedMuterCount)",
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"CREATE INDEX nostrUser_verifiedReporterCount IF NOT EXISTS FOR (n:NostrUser) ON (n.verifiedReporterCount)",
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"CREATE INDEX nostrUser_followerInput IF NOT EXISTS FOR (n:NostrUser) ON (n.followerInput)",
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// NostrUserWotMetricsCard indexes
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"CREATE INDEX nostrUserWotMetricsCard_customer_id IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.customer_id)",
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"CREATE INDEX nostrUserWotMetricsCard_observer_pubkey IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.observer_pubkey)",
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"CREATE INDEX nostrUserWotMetricsCard_observee_pubkey IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.observee_pubkey)",
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"CREATE INDEX nostrUserWotMetricsCard_hops IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.hops)",
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"CREATE INDEX nostrUserWotMetricsCard_personalizedPageRank IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.personalizedPageRank)",
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"CREATE INDEX nostrUserWotMetricsCard_influence IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.influence)",
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"CREATE INDEX nostrUserWotMetricsCard_verifiedFollowerCount IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.verifiedFollowerCount)",
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"CREATE INDEX nostrUserWotMetricsCard_verifiedMuterCount IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.verifiedMuterCount)",
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"CREATE INDEX nostrUserWotMetricsCard_verifiedReporterCount IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.verifiedReporterCount)",
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"CREATE INDEX nostrUserWotMetricsCard_followerInput IF NOT EXISTS FOR (n:NostrUserWotMetricsCard) ON (n.followerInput)",
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}
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// Execute all constraint creation queries
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for _, constraint := range constraints {
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if _, err := n.ExecuteWrite(ctx, constraint, nil); err != nil {
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return fmt.Errorf("failed to create constraint: %w", err)
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}
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}
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// Execute all index creation queries
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for _, index := range indexes {
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if _, err := n.ExecuteWrite(ctx, index, nil); err != nil {
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return fmt.Errorf("failed to create index: %w", err)
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}
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}
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n.Logger.Infof("schema applied successfully")
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return nil
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}
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// dropAll drops all data from neo4j (useful for testing)
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func (n *N) dropAll(ctx context.Context) error {
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n.Logger.Warningf("dropping all data from neo4j")
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// Delete all nodes and relationships
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_, err := n.ExecuteWrite(ctx, "MATCH (n) DETACH DELETE n", nil)
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if err != nil {
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return fmt.Errorf("failed to drop all data: %w", err)
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}
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// Drop all constraints (base + social graph + WoT)
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constraints := []string{
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// Base constraints
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"DROP CONSTRAINT event_id_unique IF EXISTS",
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"DROP CONSTRAINT author_pubkey_unique IF EXISTS",
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"DROP CONSTRAINT marker_key_unique IF EXISTS",
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// Social graph constraints
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"DROP CONSTRAINT processedSocialEvent_event_id IF EXISTS",
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// WoT constraints
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"DROP CONSTRAINT nostrUser_pubkey IF EXISTS",
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"DROP CONSTRAINT setOfNostrUserWotMetricsCards_observee_pubkey IF EXISTS",
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"DROP CONSTRAINT nostrUserWotMetricsCard_unique_combination_1 IF EXISTS",
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"DROP CONSTRAINT nostrUserWotMetricsCard_unique_combination_2 IF EXISTS",
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}
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for _, constraint := range constraints {
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_, _ = n.ExecuteWrite(ctx, constraint, nil)
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// Ignore errors as constraints may not exist
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}
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// Drop all indexes (base + social graph + WoT)
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indexes := []string{
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// Base indexes
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"DROP INDEX event_kind IF EXISTS",
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"DROP INDEX event_created_at IF EXISTS",
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"DROP INDEX event_serial IF EXISTS",
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"DROP INDEX event_kind_created_at IF EXISTS",
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"DROP INDEX tag_type IF EXISTS",
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"DROP INDEX tag_value IF EXISTS",
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"DROP INDEX tag_type_value IF EXISTS",
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// Social graph indexes
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"DROP INDEX processedSocialEvent_pubkey_kind IF EXISTS",
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"DROP INDEX processedSocialEvent_superseded IF EXISTS",
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// WoT indexes
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"DROP INDEX nostrUser_hops IF EXISTS",
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"DROP INDEX nostrUser_personalizedPageRank IF EXISTS",
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"DROP INDEX nostrUser_influence IF EXISTS",
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"DROP INDEX nostrUser_verifiedFollowerCount IF EXISTS",
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"DROP INDEX nostrUser_verifiedMuterCount IF EXISTS",
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"DROP INDEX nostrUser_verifiedReporterCount IF EXISTS",
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"DROP INDEX nostrUser_followerInput IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_customer_id IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_observer_pubkey IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_observee_pubkey IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_hops IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_personalizedPageRank IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_influence IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_verifiedFollowerCount IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_verifiedMuterCount IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_verifiedReporterCount IF EXISTS",
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"DROP INDEX nostrUserWotMetricsCard_followerInput IF EXISTS",
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}
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for _, index := range indexes {
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_, _ = n.ExecuteWrite(ctx, index, nil)
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// Ignore errors as indexes may not exist
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}
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// Reapply schema after dropping
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return n.applySchema(ctx)
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}
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