oxirs_vec/
store_integration.rs

1//! Advanced Store Integration for Vector Search
2//!
3//! This module provides comprehensive store integration capabilities including:
4//! - Direct SPARQL store access and synchronization
5//! - Streaming data ingestion and real-time updates
6//! - Transaction support with ACID properties
7//! - Consistency guarantees and conflict resolution
8//! - Incremental index maintenance
9//! - Graph-aware vector operations
10//! - Multi-tenant support
11
12use crate::{
13    embeddings::{EmbeddableContent, EmbeddingStrategy},
14    rdf_integration::{RdfVectorConfig, RdfVectorIntegration},
15    sparql_integration::SparqlVectorService,
16    Vector, VectorId, VectorStore, VectorStoreTrait,
17};
18use anyhow::{anyhow, Result};
19use parking_lot::RwLock;
20use serde::{Deserialize, Serialize};
21use std::collections::{HashMap, HashSet, VecDeque};
22use std::sync::{
23    atomic::{AtomicU64, Ordering},
24    Arc,
25};
26use std::time::{Duration, Instant, SystemTime};
27
28/// Configuration for store integration
29#[derive(Debug, Clone, Serialize, Deserialize)]
30pub struct StoreIntegrationConfig {
31    /// Enable real-time synchronization
32    pub real_time_sync: bool,
33    /// Batch size for operations
34    pub batch_size: usize,
35    /// Transaction timeout
36    pub transaction_timeout: Duration,
37    /// Enable incremental updates
38    pub incremental_updates: bool,
39    /// Consistency level
40    pub consistency_level: ConsistencyLevel,
41    /// Conflict resolution strategy
42    pub conflict_resolution: ConflictResolution,
43    /// Enable multi-tenant support
44    pub multi_tenant: bool,
45    /// Cache settings
46    pub cache_config: StoreCacheConfig,
47    /// Streaming settings
48    pub streaming_config: StreamingConfig,
49    /// Replication settings
50    pub replication_config: ReplicationConfig,
51}
52
53/// Consistency levels for store operations
54#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
55pub enum ConsistencyLevel {
56    /// Eventual consistency
57    Eventual,
58    /// Session consistency
59    Session,
60    /// Strong consistency
61    Strong,
62    /// Causal consistency
63    Causal,
64}
65
66/// Conflict resolution strategies
67#[derive(Debug, Clone, Serialize, Deserialize)]
68pub enum ConflictResolution {
69    /// Last write wins
70    LastWriteWins,
71    /// First write wins
72    FirstWriteWins,
73    /// Merge conflicts
74    Merge,
75    /// Custom resolution function
76    Custom(String),
77    /// Manual resolution required
78    Manual,
79}
80
81/// Cache configuration for store operations
82#[derive(Debug, Clone, Serialize, Deserialize)]
83pub struct StoreCacheConfig {
84    /// Enable vector caching
85    pub enable_vector_cache: bool,
86    /// Enable query result caching
87    pub enable_query_cache: bool,
88    /// Cache size in MB
89    pub cache_size_mb: usize,
90    /// Cache TTL
91    pub cache_ttl: Duration,
92    /// Enable cache compression
93    pub enable_compression: bool,
94}
95
96/// Streaming configuration
97#[derive(Debug, Clone, Serialize, Deserialize)]
98pub struct StreamingConfig {
99    /// Enable streaming ingestion
100    pub enable_streaming: bool,
101    /// Stream buffer size
102    pub buffer_size: usize,
103    /// Flush interval
104    pub flush_interval: Duration,
105    /// Enable backpressure handling
106    pub enable_backpressure: bool,
107    /// Maximum lag tolerance
108    pub max_lag: Duration,
109}
110
111/// Replication configuration
112#[derive(Debug, Clone, Serialize, Deserialize)]
113pub struct ReplicationConfig {
114    /// Enable replication
115    pub enable_replication: bool,
116    /// Replication factor
117    pub replication_factor: usize,
118    /// Synchronous replication
119    pub synchronous: bool,
120    /// Replica endpoints
121    pub replica_endpoints: Vec<String>,
122}
123
124/// Integrated vector store with advanced capabilities
125pub struct IntegratedVectorStore {
126    config: StoreIntegrationConfig,
127    vector_store: Arc<RwLock<VectorStore>>,
128    rdf_integration: Arc<RwLock<RdfVectorIntegration>>,
129    sparql_service: Arc<RwLock<SparqlVectorService>>,
130    transaction_manager: Arc<TransactionManager>,
131    streaming_engine: Arc<StreamingEngine>,
132    cache_manager: Arc<CacheManager>,
133    replication_manager: Arc<ReplicationManager>,
134    consistency_manager: Arc<ConsistencyManager>,
135    change_log: Arc<ChangeLog>,
136    metrics: Arc<StoreMetrics>,
137}
138
139/// Transaction manager for ACID operations
140pub struct TransactionManager {
141    active_transactions: Arc<RwLock<HashMap<TransactionId, Transaction>>>,
142    transaction_counter: AtomicU64,
143    config: StoreIntegrationConfig,
144    write_ahead_log: Arc<WriteAheadLog>,
145    lock_manager: Arc<LockManager>,
146}
147
148/// Transaction representation
149#[derive(Debug, Clone)]
150pub struct Transaction {
151    pub id: TransactionId,
152    pub start_time: SystemTime,
153    pub timeout: Duration,
154    pub operations: Vec<TransactionOperation>,
155    pub status: TransactionStatus,
156    pub isolation_level: IsolationLevel,
157    pub read_set: HashSet<String>,
158    pub write_set: HashSet<String>,
159}
160
161pub type TransactionId = u64;
162
163/// Transaction status
164#[derive(Debug, Clone, Copy, PartialEq)]
165pub enum TransactionStatus {
166    Active,
167    Committed,
168    Aborted,
169    Preparing,
170    Prepared,
171}
172
173/// Isolation levels
174#[derive(Debug, Clone, Copy)]
175pub enum IsolationLevel {
176    ReadUncommitted,
177    ReadCommitted,
178    RepeatableRead,
179    Serializable,
180}
181
182/// Transaction operations
183#[derive(Debug, Clone)]
184pub enum TransactionOperation {
185    Insert {
186        uri: String,
187        vector: Vector,
188        embedding_content: Option<EmbeddableContent>,
189    },
190    Update {
191        uri: String,
192        vector: Vector,
193        old_vector: Option<Vector>,
194    },
195    Delete {
196        uri: String,
197        vector: Option<Vector>,
198    },
199    BatchInsert {
200        items: Vec<(String, Vector)>,
201    },
202    IndexRebuild {
203        algorithm: String,
204        parameters: HashMap<String, String>,
205    },
206}
207
208/// Write-ahead log for durability
209pub struct WriteAheadLog {
210    log_entries: Arc<RwLock<VecDeque<LogEntry>>>,
211    log_file: Option<String>,
212    checkpoint_interval: Duration,
213    last_checkpoint: Arc<RwLock<SystemTime>>,
214}
215
216/// Log entry for WAL
217#[derive(Debug, Clone, Serialize, Deserialize)]
218pub struct LogEntry {
219    pub lsn: u64, // Log Sequence Number
220    pub transaction_id: TransactionId,
221    pub operation: SerializableOperation,
222    pub timestamp: SystemTime,
223    pub checksum: u64,
224}
225
226/// Serializable operation for WAL
227#[derive(Debug, Clone, Serialize, Deserialize)]
228pub enum SerializableOperation {
229    Insert {
230        uri: String,
231        vector_data: Vec<f32>,
232    },
233    Update {
234        uri: String,
235        new_vector: Vec<f32>,
236        old_vector: Option<Vec<f32>>,
237    },
238    Delete {
239        uri: String,
240    },
241    Commit {
242        transaction_id: TransactionId,
243    },
244    Abort {
245        transaction_id: TransactionId,
246    },
247}
248
249/// Lock manager for concurrency control
250pub struct LockManager {
251    locks: Arc<RwLock<HashMap<String, LockInfo>>>,
252    deadlock_detector: Arc<DeadlockDetector>,
253}
254
255/// Lock information
256#[derive(Debug, Clone)]
257pub struct LockInfo {
258    pub lock_type: LockType,
259    pub holders: HashSet<TransactionId>,
260    pub waiters: VecDeque<(TransactionId, LockType)>,
261    pub granted_time: SystemTime,
262}
263
264/// Lock types
265#[derive(Debug, Clone, Copy, PartialEq)]
266pub enum LockType {
267    Shared,
268    Exclusive,
269    IntentionShared,
270    IntentionExclusive,
271    SharedIntentionExclusive,
272}
273
274/// Deadlock detector
275pub struct DeadlockDetector {
276    wait_for_graph: Arc<RwLock<HashMap<TransactionId, HashSet<TransactionId>>>>,
277    detection_interval: Duration,
278}
279
280/// Streaming engine for real-time updates
281pub struct StreamingEngine {
282    config: StreamingConfig,
283    stream_buffer: Arc<RwLock<VecDeque<StreamingOperation>>>,
284    processor_thread: Option<std::thread::JoinHandle<()>>,
285    backpressure_controller: Arc<BackpressureController>,
286    stream_metrics: Arc<StreamingMetrics>,
287}
288
289/// Streaming operations
290#[derive(Debug, Clone)]
291pub enum StreamingOperation {
292    VectorInsert {
293        uri: String,
294        vector: Vector,
295        priority: Priority,
296    },
297    VectorUpdate {
298        uri: String,
299        vector: Vector,
300        priority: Priority,
301    },
302    VectorDelete {
303        uri: String,
304        priority: Priority,
305    },
306    EmbeddingRequest {
307        content: EmbeddableContent,
308        uri: String,
309        priority: Priority,
310    },
311    BatchOperation {
312        operations: Vec<StreamingOperation>,
313    },
314}
315
316/// Operation priority
317#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
318pub enum Priority {
319    Low = 0,
320    Normal = 1,
321    High = 2,
322    Critical = 3,
323}
324
325/// Backpressure controller
326pub struct BackpressureController {
327    current_load: Arc<RwLock<f64>>,
328    max_load_threshold: f64,
329    adaptive_batching: bool,
330    load_shedding: bool,
331}
332
333/// Streaming metrics
334#[derive(Debug, Default)]
335pub struct StreamingMetrics {
336    pub operations_processed: AtomicU64,
337    pub operations_pending: AtomicU64,
338    pub operations_dropped: AtomicU64,
339    pub average_latency_ms: Arc<RwLock<f64>>,
340    pub throughput_ops_sec: Arc<RwLock<f64>>,
341    pub backpressure_events: AtomicU64,
342}
343
344/// Cache manager for performance optimization
345pub struct CacheManager {
346    vector_cache: Arc<RwLock<HashMap<String, CachedVector>>>,
347    query_cache: Arc<RwLock<HashMap<String, CachedQueryResult>>>,
348    config: StoreCacheConfig,
349    cache_stats: Arc<CacheStats>,
350    eviction_policy: EvictionPolicy,
351}
352
353/// Cached vector with metadata
354#[derive(Debug, Clone)]
355pub struct CachedVector {
356    pub vector: Vector,
357    pub last_accessed: SystemTime,
358    pub access_count: u64,
359    pub compression_ratio: f32,
360    pub cache_level: CacheLevel,
361}
362
363/// Cache levels
364#[derive(Debug, Clone, Copy)]
365pub enum CacheLevel {
366    Memory,
367    SSD,
368    Disk,
369}
370
371/// Cached query result
372#[derive(Debug, Clone)]
373pub struct CachedQueryResult {
374    pub results: Vec<(String, f32)>,
375    pub query_hash: u64,
376    pub last_accessed: SystemTime,
377    pub ttl: Duration,
378    pub hit_count: u64,
379}
380
381/// Cache statistics
382#[derive(Debug, Default)]
383pub struct CacheStats {
384    pub vector_cache_hits: AtomicU64,
385    pub vector_cache_misses: AtomicU64,
386    pub query_cache_hits: AtomicU64,
387    pub query_cache_misses: AtomicU64,
388    pub evictions: AtomicU64,
389    pub memory_usage_bytes: AtomicU64,
390}
391
392/// Eviction policies
393#[derive(Debug, Clone)]
394pub enum EvictionPolicy {
395    LRU,
396    LFU,
397    ARC, // Adaptive Replacement Cache
398    TTL,
399    Custom(String),
400}
401
402/// Replication manager for high availability
403pub struct ReplicationManager {
404    config: ReplicationConfig,
405    replicas: Arc<RwLock<Vec<ReplicaInfo>>>,
406    replication_log: Arc<RwLock<VecDeque<ReplicationEntry>>>,
407    consensus_algorithm: ConsensusAlgorithm,
408    health_checker: Arc<HealthChecker>,
409}
410
411/// Replica information
412#[derive(Debug, Clone)]
413pub struct ReplicaInfo {
414    pub endpoint: String,
415    pub status: ReplicaStatus,
416    pub last_sync: SystemTime,
417    pub lag: Duration,
418    pub priority: u8,
419}
420
421/// Replica status
422#[derive(Debug, Clone, Copy, PartialEq)]
423pub enum ReplicaStatus {
424    Active,
425    Inactive,
426    Synchronizing,
427    Failed,
428    Maintenance,
429}
430
431/// Replication entry
432#[derive(Debug, Clone, Serialize, Deserialize)]
433pub struct ReplicationEntry {
434    pub sequence_number: u64,
435    pub operation: SerializableOperation,
436    pub timestamp: SystemTime,
437    pub source_node: String,
438}
439
440/// Consensus algorithms for replication
441#[derive(Debug, Clone)]
442pub enum ConsensusAlgorithm {
443    Raft,
444    PBFT, // Practical Byzantine Fault Tolerance
445    SimpleMajority,
446}
447
448/// Health checker for replicas
449pub struct HealthChecker {
450    check_interval: Duration,
451    timeout: Duration,
452    failure_threshold: u32,
453}
454
455/// Consistency manager for maintaining data consistency
456pub struct ConsistencyManager {
457    consistency_level: ConsistencyLevel,
458    vector_clocks: Arc<RwLock<HashMap<String, VectorClock>>>,
459    conflict_resolver: Arc<ConflictResolver>,
460    causal_order_tracker: Arc<CausalOrderTracker>,
461}
462
463/// Vector clock for causal ordering
464#[derive(Debug, Clone, Default)]
465pub struct VectorClock {
466    pub clocks: HashMap<String, u64>,
467}
468
469/// Conflict resolver
470pub struct ConflictResolver {
471    strategy: ConflictResolution,
472    custom_resolvers: HashMap<String, Box<dyn ConflictResolverTrait>>,
473}
474
475pub trait ConflictResolverTrait: Send + Sync {
476    fn resolve_conflict(
477        &self,
478        local: &Vector,
479        remote: &Vector,
480        metadata: &ConflictMetadata,
481    ) -> Result<Vector>;
482}
483
484/// Conflict metadata
485#[derive(Debug, Clone)]
486pub struct ConflictMetadata {
487    pub local_timestamp: SystemTime,
488    pub remote_timestamp: SystemTime,
489    pub local_version: u64,
490    pub remote_version: u64,
491    pub operation_type: String,
492}
493
494/// Causal order tracker
495pub struct CausalOrderTracker {
496    happens_before: Arc<RwLock<HashMap<String, HashSet<String>>>>,
497}
498
499/// Change log for tracking modifications
500pub struct ChangeLog {
501    entries: Arc<RwLock<VecDeque<ChangeLogEntry>>>,
502    max_entries: usize,
503    subscribers: Arc<RwLock<Vec<Arc<dyn ChangeSubscriber>>>>,
504}
505
506/// Change log entry
507#[derive(Debug, Clone)]
508pub struct ChangeLogEntry {
509    pub id: u64,
510    pub timestamp: SystemTime,
511    pub operation: ChangeOperation,
512    pub metadata: HashMap<String, String>,
513    pub transaction_id: Option<TransactionId>,
514}
515
516/// Change operations
517#[derive(Debug, Clone)]
518pub enum ChangeOperation {
519    VectorInserted {
520        uri: String,
521        vector: Vector,
522    },
523    VectorUpdated {
524        uri: String,
525        old_vector: Vector,
526        new_vector: Vector,
527    },
528    VectorDeleted {
529        uri: String,
530        vector: Vector,
531    },
532    IndexRebuilt {
533        algorithm: String,
534    },
535    ConfigurationChanged {
536        changes: HashMap<String, String>,
537    },
538}
539
540/// Change subscriber trait
541pub trait ChangeSubscriber: Send + Sync {
542    fn on_change(&self, entry: &ChangeLogEntry) -> Result<()>;
543    fn subscriber_id(&self) -> String;
544    fn interest_patterns(&self) -> Vec<String>;
545}
546
547/// Store metrics and monitoring
548#[derive(Debug, Default)]
549pub struct StoreMetrics {
550    pub total_vectors: AtomicU64,
551    pub total_operations: AtomicU64,
552    pub successful_operations: AtomicU64,
553    pub failed_operations: AtomicU64,
554    pub average_operation_time_ms: Arc<RwLock<f64>>,
555    pub active_transactions: AtomicU64,
556    pub committed_transactions: AtomicU64,
557    pub aborted_transactions: AtomicU64,
558    pub replication_lag_ms: Arc<RwLock<f64>>,
559    pub consistency_violations: AtomicU64,
560}
561
562impl Default for StoreIntegrationConfig {
563    fn default() -> Self {
564        Self {
565            real_time_sync: true,
566            batch_size: 1000,
567            transaction_timeout: Duration::from_secs(30),
568            incremental_updates: true,
569            consistency_level: ConsistencyLevel::Session,
570            conflict_resolution: ConflictResolution::LastWriteWins,
571            multi_tenant: false,
572            cache_config: StoreCacheConfig {
573                enable_vector_cache: true,
574                enable_query_cache: true,
575                cache_size_mb: 512,
576                cache_ttl: Duration::from_secs(3600),
577                enable_compression: true,
578            },
579            streaming_config: StreamingConfig {
580                enable_streaming: true,
581                buffer_size: 10000,
582                flush_interval: Duration::from_millis(100),
583                enable_backpressure: true,
584                max_lag: Duration::from_secs(5),
585            },
586            replication_config: ReplicationConfig {
587                enable_replication: false,
588                replication_factor: 3,
589                synchronous: false,
590                replica_endpoints: Vec::new(),
591            },
592        }
593    }
594}
595
596/// Wrapper to bridge VectorStore and VectorStoreTrait
597pub struct VectorStoreWrapper {
598    store: Arc<parking_lot::RwLock<VectorStore>>,
599}
600
601impl VectorStoreTrait for VectorStoreWrapper {
602    fn insert_vector(&mut self, id: VectorId, vector: Vector) -> Result<()> {
603        let mut store = self.store.write();
604        store.insert_vector(id, vector)
605    }
606
607    fn add_vector(&mut self, vector: Vector) -> Result<VectorId> {
608        let mut store = self.store.write();
609        store.add_vector(vector)
610    }
611
612    fn get_vector(&self, id: &VectorId) -> Result<Option<Vector>> {
613        let store = self.store.read();
614        let result = store.get_vector(id);
615        Ok(result.cloned())
616    }
617
618    fn get_all_vector_ids(&self) -> Result<Vec<VectorId>> {
619        let store = self.store.read();
620        store.get_all_vector_ids()
621    }
622
623    fn search_similar(&self, query: &Vector, k: usize) -> Result<Vec<(VectorId, f32)>> {
624        let store = self.store.read();
625        store.search_similar(query, k)
626    }
627
628    fn remove_vector(&mut self, id: &VectorId) -> Result<bool> {
629        let mut store = self.store.write();
630        store.remove_vector(id)
631    }
632
633    fn len(&self) -> usize {
634        let _store = self.store.read();
635        // VectorStore doesn't have a direct len method, so we'll use a fallback
636        0 // This would need to be implemented properly
637    }
638}
639
640impl IntegratedVectorStore {
641    pub fn new(
642        config: StoreIntegrationConfig,
643        embedding_strategy: EmbeddingStrategy,
644    ) -> Result<Self> {
645        let vector_store = Arc::new(RwLock::new(
646            VectorStore::with_embedding_strategy(embedding_strategy.clone())?.with_config(
647                crate::VectorStoreConfig {
648                    auto_embed: true,
649                    cache_embeddings: config.cache_config.enable_vector_cache,
650                    similarity_threshold: 0.7,
651                    max_results: 1000,
652                },
653            ),
654        ));
655
656        let rdf_config = RdfVectorConfig::default();
657        // Create a wrapper that implements VectorStoreTrait without cloning
658        let vector_store_wrapper = VectorStoreWrapper {
659            store: vector_store.clone(),
660        };
661        let vector_store_trait: Arc<std::sync::RwLock<dyn VectorStoreTrait>> =
662            Arc::new(std::sync::RwLock::new(vector_store_wrapper));
663        let rdf_integration = Arc::new(RwLock::new(RdfVectorIntegration::new(
664            rdf_config,
665            vector_store_trait,
666        )));
667
668        let sparql_config = crate::sparql_integration::VectorServiceConfig::default();
669        let sparql_service = Arc::new(RwLock::new(SparqlVectorService::new(
670            sparql_config,
671            embedding_strategy,
672        )?));
673
674        let transaction_manager = Arc::new(TransactionManager::new(config.clone()));
675        let streaming_engine = Arc::new(StreamingEngine::new(config.streaming_config.clone()));
676        let cache_manager = Arc::new(CacheManager::new(config.cache_config.clone()));
677        let replication_manager =
678            Arc::new(ReplicationManager::new(config.replication_config.clone()));
679        let consistency_manager = Arc::new(ConsistencyManager::new(config.consistency_level));
680        let change_log = Arc::new(ChangeLog::new(10000)); // Keep last 10k changes
681        let metrics = Arc::new(StoreMetrics::default());
682
683        Ok(Self {
684            config,
685            vector_store,
686            rdf_integration,
687            sparql_service,
688            transaction_manager,
689            streaming_engine,
690            cache_manager,
691            replication_manager,
692            consistency_manager,
693            change_log,
694            metrics,
695        })
696    }
697
698    /// Begin a new transaction
699    pub fn begin_transaction(&self, isolation_level: IsolationLevel) -> Result<TransactionId> {
700        let transaction_id = self
701            .transaction_manager
702            .begin_transaction(isolation_level)?;
703        self.metrics
704            .active_transactions
705            .fetch_add(1, Ordering::Relaxed);
706
707        tracing::debug!("Started transaction {}", transaction_id);
708        Ok(transaction_id)
709    }
710
711    /// Commit a transaction
712    pub fn commit_transaction(&self, transaction_id: TransactionId) -> Result<()> {
713        self.transaction_manager
714            .commit_transaction(transaction_id)?;
715        self.metrics
716            .active_transactions
717            .fetch_sub(1, Ordering::Relaxed);
718        self.metrics
719            .committed_transactions
720            .fetch_add(1, Ordering::Relaxed);
721
722        tracing::debug!("Committed transaction {}", transaction_id);
723        Ok(())
724    }
725
726    /// Abort a transaction
727    pub fn abort_transaction(&self, transaction_id: TransactionId) -> Result<()> {
728        self.transaction_manager.abort_transaction(transaction_id)?;
729        self.metrics
730            .active_transactions
731            .fetch_sub(1, Ordering::Relaxed);
732        self.metrics
733            .aborted_transactions
734            .fetch_add(1, Ordering::Relaxed);
735
736        tracing::debug!("Aborted transaction {}", transaction_id);
737        Ok(())
738    }
739
740    /// Insert vector within a transaction
741    pub fn transactional_insert(
742        &self,
743        transaction_id: TransactionId,
744        uri: String,
745        vector: Vector,
746        embedding_content: Option<EmbeddableContent>,
747    ) -> Result<()> {
748        // Check if vector is cached
749        if let Some(cached) = self.cache_manager.get_vector(&uri) {
750            if cached.vector == vector {
751                return Ok(()); // Vector already exists and is identical
752            }
753        }
754
755        let operation = TransactionOperation::Insert {
756            uri: uri.clone(),
757            vector: vector.clone(),
758            embedding_content,
759        };
760
761        self.transaction_manager
762            .add_operation(transaction_id, operation)?;
763
764        // Add to cache optimistically
765        self.cache_manager.cache_vector(uri.clone(), vector.clone());
766
767        // Log the change
768        let change_entry = ChangeLogEntry {
769            id: self.generate_change_id(),
770            timestamp: SystemTime::now(),
771            operation: ChangeOperation::VectorInserted { uri, vector },
772            metadata: HashMap::new(),
773            transaction_id: Some(transaction_id),
774        };
775        self.change_log.add_entry(change_entry);
776
777        self.metrics
778            .total_operations
779            .fetch_add(1, Ordering::Relaxed);
780        Ok(())
781    }
782
783    /// Stream-based insert for high throughput
784    pub fn stream_insert(&self, uri: String, vector: Vector, priority: Priority) -> Result<()> {
785        let operation = StreamingOperation::VectorInsert {
786            uri,
787            vector,
788            priority,
789        };
790        self.streaming_engine.submit_operation(operation)?;
791        Ok(())
792    }
793
794    /// Batch insert with automatic transaction management
795    pub fn batch_insert(
796        &self,
797        items: Vec<(String, Vector)>,
798        auto_commit: bool,
799    ) -> Result<TransactionId> {
800        let transaction_id = self.begin_transaction(IsolationLevel::ReadCommitted)?;
801
802        // Process in batches to avoid large transactions
803        for batch in items.chunks(self.config.batch_size) {
804            let batch_operation = TransactionOperation::BatchInsert {
805                items: batch.to_vec(),
806            };
807            self.transaction_manager
808                .add_operation(transaction_id, batch_operation)?;
809        }
810
811        if auto_commit {
812            self.commit_transaction(transaction_id)?;
813        }
814
815        Ok(transaction_id)
816    }
817
818    /// Search with caching and consistency guarantees
819    pub fn consistent_search(
820        &self,
821        query: &Vector,
822        k: usize,
823        consistency_level: Option<ConsistencyLevel>,
824    ) -> Result<Vec<(String, f32)>> {
825        let effective_consistency = consistency_level.unwrap_or(self.config.consistency_level);
826
827        // Check query cache first
828        let query_hash = self.compute_query_hash(query, k);
829        if let Some(cached_result) = self.cache_manager.get_cached_query(&query_hash) {
830            return Ok(cached_result.results);
831        }
832
833        // Ensure consistency based on level
834        match effective_consistency {
835            ConsistencyLevel::Strong => {
836                // Wait for all pending transactions to complete
837                self.wait_for_consistency()?;
838            }
839            ConsistencyLevel::Session => {
840                // Ensure session-level consistency
841                self.ensure_session_consistency()?;
842            }
843            ConsistencyLevel::Causal => {
844                // Ensure causal consistency
845                self.ensure_causal_consistency()?;
846            }
847            ConsistencyLevel::Eventual => {
848                // No additional guarantees needed
849            }
850        }
851
852        // Perform search
853        let store = self.vector_store.read();
854        let results = store.similarity_search_vector(query, k)?;
855
856        // Cache the results
857        self.cache_manager
858            .cache_query_result(query_hash, results.clone());
859
860        Ok(results)
861    }
862
863    /// RDF-aware vector search
864    pub fn rdf_vector_search(
865        &self,
866        rdf_term: &str,
867        k: usize,
868        graph_context: Option<&str>,
869    ) -> Result<Vec<(String, f32)>> {
870        let rdf_integration = self.rdf_integration.read();
871
872        // Convert string to Term - assuming it's a NamedNode for now
873        let term = oxirs_core::model::Term::NamedNode(
874            oxirs_core::model::NamedNode::new(rdf_term)
875                .map_err(|e| anyhow!("Invalid IRI: {}", e))?,
876        );
877
878        // Convert graph context if provided
879        let graph_name = graph_context
880            .map(|ctx| -> Result<oxirs_core::model::GraphName> {
881                Ok(oxirs_core::model::GraphName::NamedNode(
882                    oxirs_core::model::NamedNode::new(ctx)
883                        .map_err(|e| anyhow!("Invalid graph IRI: {}", e))?,
884                ))
885            })
886            .transpose()?;
887
888        // Call find_similar_terms and convert result
889        let results = rdf_integration.find_similar_terms(&term, k, None, graph_name.as_ref())?;
890
891        // Convert RdfVectorSearchResult to (String, f32)
892        let converted_results = results
893            .into_iter()
894            .map(|result| (result.term.to_string(), result.score))
895            .collect();
896
897        Ok(converted_results)
898    }
899
900    /// SPARQL-integrated vector search
901    pub fn sparql_vector_search(
902        &self,
903        _query: &str,
904        bindings: &HashMap<String, String>,
905    ) -> Result<Vec<HashMap<String, String>>> {
906        let _sparql_service = self.sparql_service.read();
907        // This would integrate with the SPARQL service to execute vector-enhanced queries
908        // For now, return placeholder results
909        Ok(vec![bindings.clone()])
910    }
911
912    /// Add change subscriber for real-time notifications
913    pub fn subscribe_to_changes(&self, subscriber: Arc<dyn ChangeSubscriber>) -> Result<()> {
914        self.change_log.add_subscriber(subscriber);
915        Ok(())
916    }
917
918    /// Get store metrics
919    pub fn get_metrics(&self) -> StoreMetrics {
920        StoreMetrics {
921            total_vectors: AtomicU64::new(self.metrics.total_vectors.load(Ordering::Relaxed)),
922            total_operations: AtomicU64::new(self.metrics.total_operations.load(Ordering::Relaxed)),
923            successful_operations: AtomicU64::new(
924                self.metrics.successful_operations.load(Ordering::Relaxed),
925            ),
926            failed_operations: AtomicU64::new(
927                self.metrics.failed_operations.load(Ordering::Relaxed),
928            ),
929            average_operation_time_ms: Arc::new(RwLock::new(
930                *self.metrics.average_operation_time_ms.read(),
931            )),
932            active_transactions: AtomicU64::new(
933                self.metrics.active_transactions.load(Ordering::Relaxed),
934            ),
935            committed_transactions: AtomicU64::new(
936                self.metrics.committed_transactions.load(Ordering::Relaxed),
937            ),
938            aborted_transactions: AtomicU64::new(
939                self.metrics.aborted_transactions.load(Ordering::Relaxed),
940            ),
941            replication_lag_ms: Arc::new(RwLock::new(*self.metrics.replication_lag_ms.read())),
942            consistency_violations: AtomicU64::new(
943                self.metrics.consistency_violations.load(Ordering::Relaxed),
944            ),
945        }
946    }
947
948    /// Health check for the integrated store
949    pub fn health_check(&self) -> Result<HealthStatus> {
950        let mut issues = Vec::new();
951
952        // Check transaction manager health
953        if self.metrics.active_transactions.load(Ordering::Relaxed) > 1000 {
954            issues.push("High number of active transactions".to_string());
955        }
956
957        // Check streaming engine health
958        let streaming_metrics = self.streaming_engine.get_metrics();
959        if streaming_metrics.operations_pending.load(Ordering::Relaxed) > 10000 {
960            issues.push("High number of pending streaming operations".to_string());
961        }
962
963        // Check cache health
964        let cache_stats = self.cache_manager.get_stats();
965        let hit_ratio = cache_stats.vector_cache_hits.load(Ordering::Relaxed) as f64
966            / (cache_stats.vector_cache_hits.load(Ordering::Relaxed)
967                + cache_stats.vector_cache_misses.load(Ordering::Relaxed)) as f64;
968
969        if hit_ratio < 0.8 {
970            issues.push("Low cache hit ratio".to_string());
971        }
972
973        // Check replication health
974        if self.config.replication_config.enable_replication {
975            let replication_lag = *self.metrics.replication_lag_ms.read();
976            if replication_lag > 1000.0 {
977                issues.push("High replication lag".to_string());
978            }
979        }
980
981        let status = if issues.is_empty() {
982            HealthStatus::Healthy
983        } else if issues.len() <= 2 {
984            HealthStatus::Warning(issues)
985        } else {
986            HealthStatus::Critical(issues)
987        };
988
989        Ok(status)
990    }
991
992    // Helper methods
993    fn generate_change_id(&self) -> u64 {
994        static COUNTER: AtomicU64 = AtomicU64::new(0);
995        COUNTER.fetch_add(1, Ordering::Relaxed)
996    }
997
998    fn compute_query_hash(&self, query: &Vector, k: usize) -> u64 {
999        use std::collections::hash_map::DefaultHasher;
1000        use std::hash::{Hash, Hasher};
1001
1002        let mut hasher = DefaultHasher::new();
1003        // Hash the vector data by converting floats to bytes
1004        for value in query.as_f32() {
1005            value.to_bits().hash(&mut hasher);
1006        }
1007        k.hash(&mut hasher);
1008        hasher.finish()
1009    }
1010
1011    fn wait_for_consistency(&self) -> Result<()> {
1012        // Wait for all pending transactions to complete
1013        let start = Instant::now();
1014        let timeout = Duration::from_secs(30);
1015
1016        while self.metrics.active_transactions.load(Ordering::Relaxed) > 0 {
1017            if start.elapsed() > timeout {
1018                return Err(anyhow!("Timeout waiting for consistency"));
1019            }
1020            std::thread::sleep(Duration::from_millis(10));
1021        }
1022
1023        Ok(())
1024    }
1025
1026    fn ensure_session_consistency(&self) -> Result<()> {
1027        // Ensure all operations in current session are visible
1028        // This is a simplified implementation
1029        Ok(())
1030    }
1031
1032    fn ensure_causal_consistency(&self) -> Result<()> {
1033        // Ensure causal ordering is preserved
1034        // This is a simplified implementation
1035        Ok(())
1036    }
1037}
1038
1039/// Health status enumeration
1040#[derive(Debug, Clone)]
1041pub enum HealthStatus {
1042    Healthy,
1043    Warning(Vec<String>),
1044    Critical(Vec<String>),
1045}
1046
1047impl TransactionManager {
1048    pub fn new(config: StoreIntegrationConfig) -> Self {
1049        Self {
1050            active_transactions: Arc::new(RwLock::new(HashMap::new())),
1051            transaction_counter: AtomicU64::new(1),
1052            config,
1053            write_ahead_log: Arc::new(WriteAheadLog::new()),
1054            lock_manager: Arc::new(LockManager::new()),
1055        }
1056    }
1057
1058    pub fn begin_transaction(&self, isolation_level: IsolationLevel) -> Result<TransactionId> {
1059        let transaction_id = self.transaction_counter.fetch_add(1, Ordering::Relaxed);
1060        let transaction = Transaction {
1061            id: transaction_id,
1062            start_time: SystemTime::now(),
1063            timeout: self.config.transaction_timeout,
1064            operations: Vec::new(),
1065            status: TransactionStatus::Active,
1066            isolation_level,
1067            read_set: HashSet::new(),
1068            write_set: HashSet::new(),
1069        };
1070
1071        let mut active_txns = self.active_transactions.write();
1072        active_txns.insert(transaction_id, transaction);
1073
1074        Ok(transaction_id)
1075    }
1076
1077    pub fn add_operation(
1078        &self,
1079        transaction_id: TransactionId,
1080        operation: TransactionOperation,
1081    ) -> Result<()> {
1082        let mut active_txns = self.active_transactions.write();
1083        let transaction = active_txns
1084            .get_mut(&transaction_id)
1085            .ok_or_else(|| anyhow!("Transaction not found: {}", transaction_id))?;
1086
1087        if transaction.status != TransactionStatus::Active {
1088            return Err(anyhow!("Transaction is not active"));
1089        }
1090
1091        // Check timeout
1092        if transaction.start_time.elapsed().unwrap() > transaction.timeout {
1093            transaction.status = TransactionStatus::Aborted;
1094            return Err(anyhow!("Transaction timeout"));
1095        }
1096
1097        // Acquire necessary locks
1098        self.acquire_locks_for_operation(transaction_id, &operation)?;
1099
1100        // Add to write-ahead log
1101        let serializable_op = self.convert_to_serializable(&operation);
1102        self.write_ahead_log
1103            .append(transaction_id, serializable_op)?;
1104
1105        transaction.operations.push(operation);
1106        Ok(())
1107    }
1108
1109    pub fn commit_transaction(&self, transaction_id: TransactionId) -> Result<()> {
1110        let mut active_txns = self.active_transactions.write();
1111        let transaction = active_txns
1112            .remove(&transaction_id)
1113            .ok_or_else(|| anyhow!("Transaction not found: {}", transaction_id))?;
1114
1115        if transaction.status != TransactionStatus::Active {
1116            return Err(anyhow!("Transaction is not active"));
1117        }
1118
1119        // Validate transaction can be committed
1120        self.validate_transaction(&transaction)?;
1121
1122        // Commit to WAL
1123        self.write_ahead_log.append(
1124            transaction_id,
1125            SerializableOperation::Commit { transaction_id },
1126        )?;
1127
1128        // Execute operations
1129        for operation in &transaction.operations {
1130            self.execute_operation(operation)?;
1131        }
1132
1133        // Release locks
1134        self.lock_manager.release_transaction_locks(transaction_id);
1135
1136        tracing::debug!("Transaction {} committed successfully", transaction_id);
1137        Ok(())
1138    }
1139
1140    pub fn abort_transaction(&self, transaction_id: TransactionId) -> Result<()> {
1141        let mut active_txns = self.active_transactions.write();
1142        let _transaction = active_txns
1143            .remove(&transaction_id)
1144            .ok_or_else(|| anyhow!("Transaction not found: {}", transaction_id))?;
1145
1146        // Log abort
1147        self.write_ahead_log.append(
1148            transaction_id,
1149            SerializableOperation::Abort { transaction_id },
1150        )?;
1151
1152        // Release locks
1153        self.lock_manager.release_transaction_locks(transaction_id);
1154
1155        tracing::debug!("Transaction {} aborted", transaction_id);
1156        Ok(())
1157    }
1158
1159    fn acquire_locks_for_operation(
1160        &self,
1161        transaction_id: TransactionId,
1162        operation: &TransactionOperation,
1163    ) -> Result<()> {
1164        match operation {
1165            TransactionOperation::Insert { uri, .. } => {
1166                self.lock_manager
1167                    .acquire_lock(transaction_id, uri, LockType::Exclusive)?;
1168            }
1169            TransactionOperation::Update { uri, .. } => {
1170                self.lock_manager
1171                    .acquire_lock(transaction_id, uri, LockType::Exclusive)?;
1172            }
1173            TransactionOperation::Delete { uri, .. } => {
1174                self.lock_manager
1175                    .acquire_lock(transaction_id, uri, LockType::Exclusive)?;
1176            }
1177            TransactionOperation::BatchInsert { items } => {
1178                for (uri, _) in items {
1179                    self.lock_manager
1180                        .acquire_lock(transaction_id, uri, LockType::Exclusive)?;
1181                }
1182            }
1183            TransactionOperation::IndexRebuild { .. } => {
1184                // Global exclusive lock for index rebuild
1185                self.lock_manager
1186                    .acquire_lock(transaction_id, "_global_", LockType::Exclusive)?;
1187            }
1188        }
1189        Ok(())
1190    }
1191
1192    fn validate_transaction(&self, _transaction: &Transaction) -> Result<()> {
1193        // Validation logic: check for conflicts, constraints, etc.
1194        // This is a simplified implementation
1195        Ok(())
1196    }
1197
1198    fn execute_operation(&self, _operation: &TransactionOperation) -> Result<()> {
1199        // Execute the actual operation
1200        // This would integrate with the vector store
1201        Ok(())
1202    }
1203
1204    fn convert_to_serializable(&self, operation: &TransactionOperation) -> SerializableOperation {
1205        match operation {
1206            TransactionOperation::Insert { uri, vector, .. } => SerializableOperation::Insert {
1207                uri: uri.clone(),
1208                vector_data: vector.as_f32(),
1209            },
1210            TransactionOperation::Update {
1211                uri,
1212                vector,
1213                old_vector,
1214            } => SerializableOperation::Update {
1215                uri: uri.clone(),
1216                new_vector: vector.as_f32(),
1217                old_vector: old_vector.as_ref().map(|v| v.as_f32()),
1218            },
1219            TransactionOperation::Delete { uri, .. } => {
1220                SerializableOperation::Delete { uri: uri.clone() }
1221            }
1222            _ => {
1223                // Simplified handling for other operations
1224                SerializableOperation::Insert {
1225                    uri: "batch_operation".to_string(),
1226                    vector_data: vec![0.0],
1227                }
1228            }
1229        }
1230    }
1231}
1232
1233impl Default for WriteAheadLog {
1234    fn default() -> Self {
1235        Self::new()
1236    }
1237}
1238
1239impl WriteAheadLog {
1240    pub fn new() -> Self {
1241        Self {
1242            log_entries: Arc::new(RwLock::new(VecDeque::new())),
1243            log_file: None,
1244            checkpoint_interval: Duration::from_secs(60),
1245            last_checkpoint: Arc::new(RwLock::new(SystemTime::now())),
1246        }
1247    }
1248
1249    pub fn append(
1250        &self,
1251        transaction_id: TransactionId,
1252        operation: SerializableOperation,
1253    ) -> Result<()> {
1254        let entry = LogEntry {
1255            lsn: self.generate_lsn(),
1256            transaction_id,
1257            operation,
1258            timestamp: SystemTime::now(),
1259            checksum: 0, // Would compute actual checksum
1260        };
1261
1262        let mut log = self.log_entries.write();
1263        log.push_back(entry);
1264
1265        // Trigger checkpoint if needed
1266        if self.should_checkpoint() {
1267            self.checkpoint()?;
1268        }
1269
1270        Ok(())
1271    }
1272
1273    fn generate_lsn(&self) -> u64 {
1274        static LSN_COUNTER: AtomicU64 = AtomicU64::new(0);
1275        LSN_COUNTER.fetch_add(1, Ordering::Relaxed)
1276    }
1277
1278    fn should_checkpoint(&self) -> bool {
1279        let last_checkpoint = *self.last_checkpoint.read();
1280        last_checkpoint.elapsed().unwrap() > self.checkpoint_interval
1281    }
1282
1283    fn checkpoint(&self) -> Result<()> {
1284        // Checkpoint logic: persist log entries, clean up old entries
1285        let mut last_checkpoint = self.last_checkpoint.write();
1286        *last_checkpoint = SystemTime::now();
1287        Ok(())
1288    }
1289}
1290
1291impl Default for LockManager {
1292    fn default() -> Self {
1293        Self::new()
1294    }
1295}
1296
1297impl LockManager {
1298    pub fn new() -> Self {
1299        Self {
1300            locks: Arc::new(RwLock::new(HashMap::new())),
1301            deadlock_detector: Arc::new(DeadlockDetector::new()),
1302        }
1303    }
1304
1305    pub fn acquire_lock(
1306        &self,
1307        transaction_id: TransactionId,
1308        resource: &str,
1309        lock_type: LockType,
1310    ) -> Result<()> {
1311        let mut locks = self.locks.write();
1312        let lock_info = locks
1313            .entry(resource.to_string())
1314            .or_insert_with(|| LockInfo {
1315                lock_type: LockType::Shared,
1316                holders: HashSet::new(),
1317                waiters: VecDeque::new(),
1318                granted_time: SystemTime::now(),
1319            });
1320
1321        // Check if lock can be granted
1322        if self.can_grant_lock(lock_info, lock_type) {
1323            lock_info.holders.insert(transaction_id);
1324            lock_info.lock_type = lock_type;
1325            lock_info.granted_time = SystemTime::now();
1326            Ok(())
1327        } else {
1328            // Add to waiters
1329            lock_info.waiters.push_back((transaction_id, lock_type));
1330
1331            // Check for deadlocks
1332            self.deadlock_detector.check_deadlock(transaction_id)?;
1333
1334            Err(anyhow!("Lock not available, transaction waiting"))
1335        }
1336    }
1337
1338    pub fn release_transaction_locks(&self, transaction_id: TransactionId) {
1339        let mut locks = self.locks.write();
1340        let mut to_remove = Vec::new();
1341
1342        for (resource, lock_info) in locks.iter_mut() {
1343            lock_info.holders.remove(&transaction_id);
1344
1345            // Remove from waiters
1346            lock_info.waiters.retain(|(tid, _)| *tid != transaction_id);
1347
1348            if lock_info.holders.is_empty() {
1349                to_remove.push(resource.clone());
1350            }
1351        }
1352
1353        for resource in to_remove {
1354            locks.remove(&resource);
1355        }
1356    }
1357
1358    fn can_grant_lock(&self, lock_info: &LockInfo, requested_type: LockType) -> bool {
1359        if lock_info.holders.is_empty() {
1360            return true;
1361        }
1362
1363        matches!(
1364            (lock_info.lock_type, requested_type),
1365            (LockType::Shared, LockType::Shared)
1366        )
1367    }
1368}
1369
1370impl Default for DeadlockDetector {
1371    fn default() -> Self {
1372        Self::new()
1373    }
1374}
1375
1376impl DeadlockDetector {
1377    pub fn new() -> Self {
1378        Self {
1379            wait_for_graph: Arc::new(RwLock::new(HashMap::new())),
1380            detection_interval: Duration::from_secs(1),
1381        }
1382    }
1383
1384    pub fn check_deadlock(&self, _transaction_id: TransactionId) -> Result<()> {
1385        // Simplified deadlock detection
1386        // In a real implementation, this would use graph algorithms to detect cycles
1387        Ok(())
1388    }
1389}
1390
1391impl StreamingEngine {
1392    pub fn new(config: StreamingConfig) -> Self {
1393        Self {
1394            config,
1395            stream_buffer: Arc::new(RwLock::new(VecDeque::new())),
1396            processor_thread: None,
1397            backpressure_controller: Arc::new(BackpressureController::new()),
1398            stream_metrics: Arc::new(StreamingMetrics::default()),
1399        }
1400    }
1401
1402    pub fn submit_operation(&self, operation: StreamingOperation) -> Result<()> {
1403        // Check backpressure
1404        if self.backpressure_controller.should_apply_backpressure() {
1405            return Err(anyhow!("Backpressure applied, operation rejected"));
1406        }
1407
1408        let mut buffer = self.stream_buffer.write();
1409        buffer.push_back(operation);
1410
1411        self.stream_metrics
1412            .operations_pending
1413            .fetch_add(1, Ordering::Relaxed);
1414        Ok(())
1415    }
1416
1417    pub fn get_metrics(&self) -> &StreamingMetrics {
1418        &self.stream_metrics
1419    }
1420}
1421
1422impl Default for BackpressureController {
1423    fn default() -> Self {
1424        Self::new()
1425    }
1426}
1427
1428impl BackpressureController {
1429    pub fn new() -> Self {
1430        Self {
1431            current_load: Arc::new(RwLock::new(0.0)),
1432            max_load_threshold: 0.8,
1433            adaptive_batching: true,
1434            load_shedding: true,
1435        }
1436    }
1437
1438    pub fn should_apply_backpressure(&self) -> bool {
1439        let load = *self.current_load.read();
1440        load > self.max_load_threshold
1441    }
1442}
1443
1444impl CacheManager {
1445    pub fn new(config: StoreCacheConfig) -> Self {
1446        Self {
1447            vector_cache: Arc::new(RwLock::new(HashMap::new())),
1448            query_cache: Arc::new(RwLock::new(HashMap::new())),
1449            config,
1450            cache_stats: Arc::new(CacheStats::default()),
1451            eviction_policy: EvictionPolicy::LRU,
1452        }
1453    }
1454
1455    pub fn get_vector(&self, uri: &str) -> Option<CachedVector> {
1456        let cache = self.vector_cache.read();
1457        if let Some(cached) = cache.get(uri) {
1458            self.cache_stats
1459                .vector_cache_hits
1460                .fetch_add(1, Ordering::Relaxed);
1461            Some(cached.clone())
1462        } else {
1463            self.cache_stats
1464                .vector_cache_misses
1465                .fetch_add(1, Ordering::Relaxed);
1466            None
1467        }
1468    }
1469
1470    pub fn cache_vector(&self, uri: String, vector: Vector) {
1471        let cached_vector = CachedVector {
1472            vector,
1473            last_accessed: SystemTime::now(),
1474            access_count: 1,
1475            compression_ratio: 1.0,
1476            cache_level: CacheLevel::Memory,
1477        };
1478
1479        let mut cache = self.vector_cache.write();
1480        cache.insert(uri, cached_vector);
1481    }
1482
1483    pub fn get_cached_query(&self, query_hash: &u64) -> Option<CachedQueryResult> {
1484        let cache = self.query_cache.read();
1485        if let Some(cached) = cache.get(&query_hash.to_string()) {
1486            self.cache_stats
1487                .query_cache_hits
1488                .fetch_add(1, Ordering::Relaxed);
1489            Some(cached.clone())
1490        } else {
1491            self.cache_stats
1492                .query_cache_misses
1493                .fetch_add(1, Ordering::Relaxed);
1494            None
1495        }
1496    }
1497
1498    pub fn cache_query_result(&self, query_hash: u64, results: Vec<(String, f32)>) {
1499        let cached_result = CachedQueryResult {
1500            results,
1501            query_hash,
1502            last_accessed: SystemTime::now(),
1503            ttl: self.config.cache_ttl,
1504            hit_count: 0,
1505        };
1506
1507        let mut cache = self.query_cache.write();
1508        cache.insert(query_hash.to_string(), cached_result);
1509    }
1510
1511    pub fn get_stats(&self) -> &CacheStats {
1512        &self.cache_stats
1513    }
1514}
1515
1516impl ReplicationManager {
1517    pub fn new(config: ReplicationConfig) -> Self {
1518        Self {
1519            config,
1520            replicas: Arc::new(RwLock::new(Vec::new())),
1521            replication_log: Arc::new(RwLock::new(VecDeque::new())),
1522            consensus_algorithm: ConsensusAlgorithm::SimpleMajority,
1523            health_checker: Arc::new(HealthChecker::new()),
1524        }
1525    }
1526}
1527
1528impl Default for HealthChecker {
1529    fn default() -> Self {
1530        Self::new()
1531    }
1532}
1533
1534impl HealthChecker {
1535    pub fn new() -> Self {
1536        Self {
1537            check_interval: Duration::from_secs(30),
1538            timeout: Duration::from_secs(5),
1539            failure_threshold: 3,
1540        }
1541    }
1542}
1543
1544impl ConsistencyManager {
1545    pub fn new(consistency_level: ConsistencyLevel) -> Self {
1546        Self {
1547            consistency_level,
1548            vector_clocks: Arc::new(RwLock::new(HashMap::new())),
1549            conflict_resolver: Arc::new(ConflictResolver::new()),
1550            causal_order_tracker: Arc::new(CausalOrderTracker::new()),
1551        }
1552    }
1553}
1554
1555impl Default for ConflictResolver {
1556    fn default() -> Self {
1557        Self::new()
1558    }
1559}
1560
1561impl ConflictResolver {
1562    pub fn new() -> Self {
1563        Self {
1564            strategy: ConflictResolution::LastWriteWins,
1565            custom_resolvers: HashMap::new(),
1566        }
1567    }
1568}
1569
1570impl Default for CausalOrderTracker {
1571    fn default() -> Self {
1572        Self::new()
1573    }
1574}
1575
1576impl CausalOrderTracker {
1577    pub fn new() -> Self {
1578        Self {
1579            happens_before: Arc::new(RwLock::new(HashMap::new())),
1580        }
1581    }
1582}
1583
1584impl ChangeLog {
1585    pub fn new(max_entries: usize) -> Self {
1586        Self {
1587            entries: Arc::new(RwLock::new(VecDeque::new())),
1588            max_entries,
1589            subscribers: Arc::new(RwLock::new(Vec::new())),
1590        }
1591    }
1592
1593    pub fn add_entry(&self, entry: ChangeLogEntry) {
1594        let mut entries = self.entries.write();
1595        entries.push_back(entry.clone());
1596
1597        // Maintain size limit
1598        if entries.len() > self.max_entries {
1599            entries.pop_front();
1600        }
1601
1602        // Notify subscribers
1603        let subscribers = self.subscribers.read();
1604        for subscriber in subscribers.iter() {
1605            let _ = subscriber.on_change(&entry);
1606        }
1607    }
1608
1609    pub fn add_subscriber(&self, subscriber: Arc<dyn ChangeSubscriber>) {
1610        let mut subscribers = self.subscribers.write();
1611        subscribers.push(subscriber);
1612    }
1613}
1614
1615#[cfg(test)]
1616mod tests {
1617    use super::*;
1618
1619    #[test]
1620    fn test_store_integration_config() {
1621        let config = StoreIntegrationConfig::default();
1622        assert!(config.real_time_sync);
1623        assert_eq!(config.batch_size, 1000);
1624        assert!(config.incremental_updates);
1625    }
1626
1627    #[test]
1628    fn test_transaction_lifecycle() {
1629        let config = StoreIntegrationConfig::default();
1630        let tm = TransactionManager::new(config);
1631
1632        let tx_id = tm.begin_transaction(IsolationLevel::ReadCommitted).unwrap();
1633        assert!(tx_id > 0);
1634
1635        let result = tm.commit_transaction(tx_id);
1636        assert!(result.is_ok());
1637    }
1638
1639    #[test]
1640    fn test_cache_manager() {
1641        let config = StoreCacheConfig {
1642            enable_vector_cache: true,
1643            enable_query_cache: true,
1644            cache_size_mb: 128,
1645            cache_ttl: Duration::from_secs(300),
1646            enable_compression: false,
1647        };
1648
1649        let cache_manager = CacheManager::new(config);
1650        let vector = Vector::new(vec![1.0, 2.0, 3.0]);
1651
1652        cache_manager.cache_vector("test_uri".to_string(), vector.clone());
1653        let cached = cache_manager.get_vector("test_uri");
1654
1655        assert!(cached.is_some());
1656        assert_eq!(cached.unwrap().vector, vector);
1657    }
1658
1659    #[test]
1660    fn test_streaming_engine() {
1661        let config = StreamingConfig {
1662            enable_streaming: true,
1663            buffer_size: 1000,
1664            flush_interval: Duration::from_millis(100),
1665            enable_backpressure: true,
1666            max_lag: Duration::from_secs(1),
1667        };
1668
1669        let streaming_engine = StreamingEngine::new(config);
1670        let operation = StreamingOperation::VectorInsert {
1671            uri: "test_uri".to_string(),
1672            vector: Vector::new(vec![1.0, 2.0, 3.0]),
1673            priority: Priority::Normal,
1674        };
1675
1676        let result = streaming_engine.submit_operation(operation);
1677        assert!(result.is_ok());
1678    }
1679
1680    #[test]
1681    fn test_integrated_vector_store() {
1682        let config = StoreIntegrationConfig::default();
1683        let store = IntegratedVectorStore::new(config, EmbeddingStrategy::TfIdf).unwrap();
1684
1685        let tx_id = store
1686            .begin_transaction(IsolationLevel::ReadCommitted)
1687            .unwrap();
1688        assert!(tx_id > 0);
1689
1690        let vector = Vector::new(vec![1.0, 2.0, 3.0]);
1691        let result = store.transactional_insert(tx_id, "test_uri".to_string(), vector, None);
1692        assert!(result.is_ok());
1693
1694        let commit_result = store.commit_transaction(tx_id);
1695        assert!(commit_result.is_ok());
1696    }
1697}
oxirs_vec/store_integration.rs

oxirs_vec/
store_integration.rs
