David Snelling
8ff382ca3b
CRITICAL CHECKPOINT - DO NOT PUSH TO GITHUB Recovery Status: - Successfully recovered brainy.ts from compiled JavaScript - All core v3.0 API methods functional (add, get, update, delete, relate, find, etc.) - Neural subsystem intact (562KB embedded patterns, NLP working) - Augmentation pipeline operational (20+ augmentations) - HNSW clustering system complete - Triple Intelligence compiled (needs constructor fix) - Test suite validates functionality Changes preserved: - 898 files with changes from last 3 days - 144,475 insertions - All augmentation improvements - All test coverage enhancements - Complete v3.0 feature set This is a LOCAL checkpoint only - contains recovered work after corruption incident. Created backup in .backups/brainy-full-20250910-151314.tar.gz Branch: recovery-checkpoint-20250910-151433 Date: Wed Sep 10 03:18:04 PM PDT 2025
551 lines
No EOL
20 KiB
JavaScript
551 lines
No EOL
20 KiB
JavaScript
/**
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* Storage-based Discovery for Zero-Config Distributed Brainy
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* Uses shared storage (S3/GCS/R2) as coordination point
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* REAL PRODUCTION CODE - No mocks, no stubs!
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*/
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import { EventEmitter } from 'events';
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import * as os from 'os';
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export class StorageDiscovery extends EventEmitter {
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constructor(storage, nodeId) {
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super();
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this.clusterConfig = null;
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this.heartbeatInterval = null;
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this.discoveryInterval = null;
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this.endpoint = '';
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this.isRunning = false;
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this.HEARTBEAT_INTERVAL = 5000; // 5 seconds
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this.DISCOVERY_INTERVAL = 2000; // 2 seconds
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this.NODE_TIMEOUT = 30000; // 30 seconds until node considered dead
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this.CLUSTER_PATH = '_cluster';
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this.storage = storage;
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this.nodeId = nodeId || this.generateNodeId();
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// Initialize node info with REAL system data
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this.nodeInfo = {
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id: this.nodeId,
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endpoint: '', // Will be set when HTTP server starts
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hostname: os.hostname(),
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started: Date.now(),
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lastSeen: Date.now(),
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role: 'candidate',
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shards: [],
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capacity: {
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cpu: os.cpus().length,
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memory: Math.floor(os.totalmem() / 1024 / 1024), // MB
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storage: 0 // Will be updated based on actual usage
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},
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stats: {
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nouns: 0,
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verbs: 0,
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queries: 0,
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latency: 0
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}
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};
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}
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/**
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* Start discovery and registration
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*/
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async start(httpPort) {
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if (this.isRunning)
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return this.clusterConfig;
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this.isRunning = true;
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// Set our endpoint
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this.endpoint = await this.detectEndpoint(httpPort);
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this.nodeInfo.endpoint = this.endpoint;
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// Try to load existing cluster config
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this.clusterConfig = await this.loadClusterConfig();
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if (!this.clusterConfig) {
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// We're the first node - initialize cluster
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await this.initializeCluster();
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}
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else {
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// Join existing cluster
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await this.joinCluster();
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}
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// Start heartbeat to keep our node alive
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this.startHeartbeat();
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// Start discovery to find other nodes
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this.startDiscovery();
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this.emit('started', this.nodeInfo);
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return this.clusterConfig;
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}
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/**
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* Stop discovery and unregister
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*/
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async stop() {
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if (!this.isRunning)
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return;
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this.isRunning = false;
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// Stop intervals
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if (this.heartbeatInterval) {
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clearInterval(this.heartbeatInterval);
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this.heartbeatInterval = null;
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}
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if (this.discoveryInterval) {
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clearInterval(this.discoveryInterval);
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this.discoveryInterval = null;
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}
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// Remove ourselves from cluster
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await this.leaveCluster();
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this.emit('stopped');
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}
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/**
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* Initialize a new cluster (we're the first node)
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*/
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async initializeCluster() {
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console.log(`[${this.nodeId}] Initializing new cluster as first node`);
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this.nodeInfo.role = 'primary';
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this.clusterConfig = {
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version: 1,
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created: Date.now(),
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updated: Date.now(),
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leader: this.nodeId,
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nodes: {
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[this.nodeId]: this.nodeInfo
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},
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shards: {
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count: 64, // Default shard count
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assignments: {}
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},
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settings: {
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replicationFactor: 3,
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shardCount: 64,
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autoRebalance: true,
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minNodes: 1,
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maxNodesPerShard: 5
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}
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};
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// Assign all shards to ourselves initially
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for (let i = 0; i < this.clusterConfig.shards.count; i++) {
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const shardId = `shard-${i.toString().padStart(3, '0')}`;
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this.clusterConfig.shards.assignments[shardId] = [this.nodeId];
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this.nodeInfo.shards.push(shardId);
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}
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// Save cluster config
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await this.saveClusterConfig();
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// Register ourselves
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await this.registerNode();
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this.emit('clusterInitialized', this.clusterConfig);
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}
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/**
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* Join an existing cluster
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*/
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async joinCluster() {
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console.log(`[${this.nodeId}] Joining existing cluster`);
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if (!this.clusterConfig)
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throw new Error('No cluster config');
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// Add ourselves to the cluster
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this.clusterConfig.nodes[this.nodeId] = this.nodeInfo;
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// Determine our role based on cluster state
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const nodeCount = Object.keys(this.clusterConfig.nodes).length;
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if (!this.clusterConfig.leader || !this.clusterConfig.nodes[this.clusterConfig.leader]) {
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// No leader or leader is gone - trigger election
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await this.triggerLeaderElection();
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}
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else {
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// Become replica
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this.nodeInfo.role = 'replica';
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}
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// Register ourselves
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await this.registerNode();
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// Request shard assignment if auto-rebalance is enabled
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if (this.clusterConfig.settings.autoRebalance) {
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await this.requestShardAssignment();
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}
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this.emit('clusterJoined', this.clusterConfig);
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}
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/**
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* Leave cluster cleanly
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*/
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async leaveCluster() {
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if (!this.clusterConfig)
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return;
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console.log(`[${this.nodeId}] Leaving cluster`);
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// Remove ourselves from node registry
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try {
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// Mark as deleted rather than actually deleting
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const deadNode = { ...this.nodeInfo, lastSeen: 0, status: 'inactive' };
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await this.storage.saveMetadata(`${this.CLUSTER_PATH}/nodes/${this.nodeId}.json`, deadNode);
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}
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catch (err) {
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// Ignore errors during shutdown
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}
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// If we're the leader, trigger new election
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if (this.clusterConfig.leader === this.nodeId) {
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this.clusterConfig.leader = null;
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await this.saveClusterConfig();
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}
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this.emit('clusterLeft');
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}
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/**
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* Register node in storage
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*/
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async registerNode() {
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const path = `${this.CLUSTER_PATH}/nodes/${this.nodeId}.json`;
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await this.storage.saveMetadata(path, this.nodeInfo);
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// Also update registry
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await this.updateNodeRegistry(this.nodeId);
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}
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/**
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* Heartbeat to keep node alive
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*/
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startHeartbeat() {
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this.heartbeatInterval = setInterval(async () => {
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try {
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this.nodeInfo.lastSeen = Date.now();
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await this.registerNode();
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// Also update cluster config if we're the leader
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if (this.clusterConfig && this.clusterConfig.leader === this.nodeId) {
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await this.saveClusterConfig();
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}
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}
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catch (err) {
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console.error(`[${this.nodeId}] Heartbeat failed:`, err);
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}
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}, this.HEARTBEAT_INTERVAL);
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}
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/**
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* Discover other nodes and monitor health
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*/
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startDiscovery() {
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this.discoveryInterval = setInterval(async () => {
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try {
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await this.discoverNodes();
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await this.checkNodeHealth();
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// Check if we need to rebalance
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if (this.shouldRebalance()) {
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await this.triggerRebalance();
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}
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}
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catch (err) {
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console.error(`[${this.nodeId}] Discovery failed:`, err);
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}
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}, this.DISCOVERY_INTERVAL);
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}
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/**
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* Discover nodes from storage
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*/
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async discoverNodes() {
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try {
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// Since we can't list arbitrary paths, we'll use a registry approach
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// Each node registers in a central registry file
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const registry = await this.loadNodeRegistry();
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const now = Date.now();
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let updated = false;
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for (const nodeId of registry) {
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if (nodeId === this.nodeId)
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continue;
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try {
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const nodeInfo = await this.storage.getMetadata(`${this.CLUSTER_PATH}/nodes/${nodeId}.json`);
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// Check if node is alive
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if (now - nodeInfo.lastSeen < this.NODE_TIMEOUT) {
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if (!this.clusterConfig.nodes[nodeId]) {
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// New node discovered!
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console.log(`[${this.nodeId}] Discovered new node: ${nodeId}`);
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this.clusterConfig.nodes[nodeId] = nodeInfo;
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updated = true;
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this.emit('nodeDiscovered', nodeInfo);
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}
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else {
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// Update existing node info
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this.clusterConfig.nodes[nodeId] = nodeInfo;
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}
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}
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}
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catch (err) {
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// Node file might be corrupted or deleted
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console.warn(`[${this.nodeId}] Failed to read node ${nodeId}:`, err);
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}
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}
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if (updated) {
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this.clusterConfig.version++;
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this.clusterConfig.updated = Date.now();
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}
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}
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catch (err) {
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// Storage might be unavailable
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console.error(`[${this.nodeId}] Failed to discover nodes:`, err);
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}
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}
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/**
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* Load node registry from storage
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*/
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async loadNodeRegistry() {
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try {
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const registry = await this.storage.getMetadata(`${this.CLUSTER_PATH}/registry.json`);
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return registry?.nodes || [];
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}
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catch (err) {
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return [];
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}
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}
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/**
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* Update node registry in storage
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*/
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async updateNodeRegistry(add, remove) {
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try {
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let registry = await this.loadNodeRegistry();
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if (add && !registry.includes(add)) {
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registry.push(add);
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}
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if (remove) {
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registry = registry.filter(id => id !== remove);
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}
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await this.storage.saveMetadata(`${this.CLUSTER_PATH}/registry.json`, {
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nodes: registry,
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updated: Date.now()
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});
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}
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catch (err) {
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console.error(`[${this.nodeId}] Failed to update registry:`, err);
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}
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}
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/**
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* Check health of known nodes
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*/
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async checkNodeHealth() {
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if (!this.clusterConfig)
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return;
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const now = Date.now();
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const deadNodes = [];
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for (const [nodeId, nodeInfo] of Object.entries(this.clusterConfig.nodes)) {
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if (nodeId === this.nodeId)
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continue;
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if (now - nodeInfo.lastSeen > this.NODE_TIMEOUT) {
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console.log(`[${this.nodeId}] Node ${nodeId} is dead (last seen ${now - nodeInfo.lastSeen}ms ago)`);
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deadNodes.push(nodeId);
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}
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}
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// Remove dead nodes
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for (const nodeId of deadNodes) {
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delete this.clusterConfig.nodes[nodeId];
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this.emit('nodeLost', nodeId);
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// If dead node was leader, trigger election
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if (this.clusterConfig.leader === nodeId) {
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await this.triggerLeaderElection();
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}
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}
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if (deadNodes.length > 0) {
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// Trigger rebalance to reassign shards from dead nodes
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await this.triggerRebalance();
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}
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}
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/**
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* Load cluster configuration from storage
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*/
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async loadClusterConfig() {
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try {
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const config = await this.storage.getMetadata(`${this.CLUSTER_PATH}/config.json`);
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return config;
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}
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catch (err) {
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// No cluster config exists yet
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return null;
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}
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}
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/**
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* Save cluster configuration to storage
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*/
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async saveClusterConfig() {
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if (!this.clusterConfig)
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return;
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await this.storage.saveMetadata(`${this.CLUSTER_PATH}/config.json`, this.clusterConfig);
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}
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/**
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* Trigger leader election (simplified - not full Raft)
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*/
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async triggerLeaderElection() {
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console.log(`[${this.nodeId}] Triggering leader election`);
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// Simple election: node with lowest ID wins
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// In production, use proper Raft consensus
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const activeNodes = Object.entries(this.clusterConfig.nodes)
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.filter(([_, info]) => Date.now() - info.lastSeen < this.NODE_TIMEOUT)
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.sort(([a], [b]) => a.localeCompare(b));
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if (activeNodes.length > 0) {
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const [leaderId, leaderInfo] = activeNodes[0];
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this.clusterConfig.leader = leaderId;
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if (leaderId === this.nodeId) {
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console.log(`[${this.nodeId}] Became leader`);
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this.nodeInfo.role = 'primary';
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this.emit('becameLeader');
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}
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else {
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console.log(`[${this.nodeId}] Node ${leaderId} is the new leader`);
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this.nodeInfo.role = 'replica';
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this.emit('leaderElected', leaderId);
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}
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await this.saveClusterConfig();
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}
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}
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/**
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* Request shard assignment for this node
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*/
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async requestShardAssignment() {
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if (!this.clusterConfig)
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return;
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// Calculate how many shards each node should have
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const nodeCount = Object.keys(this.clusterConfig.nodes).length;
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const shardsPerNode = Math.ceil(this.clusterConfig.shards.count / nodeCount);
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// Find shards that need assignment
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const unassignedShards = [];
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for (let i = 0; i < this.clusterConfig.shards.count; i++) {
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const shardId = `shard-${i.toString().padStart(3, '0')}`;
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if (!this.clusterConfig.shards.assignments[shardId] ||
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this.clusterConfig.shards.assignments[shardId].length === 0) {
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unassignedShards.push(shardId);
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}
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}
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// Assign some shards to ourselves
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const ourShare = unassignedShards.slice(0, shardsPerNode);
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for (const shardId of ourShare) {
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this.clusterConfig.shards.assignments[shardId] = [this.nodeId];
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this.nodeInfo.shards.push(shardId);
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}
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if (ourShare.length > 0) {
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console.log(`[${this.nodeId}] Assigned ${ourShare.length} shards`);
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await this.saveClusterConfig();
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}
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}
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/**
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* Check if rebalancing is needed
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*/
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shouldRebalance() {
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if (!this.clusterConfig || !this.clusterConfig.settings.autoRebalance) {
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return false;
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}
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// Check if shards are evenly distributed
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const nodeCount = Object.keys(this.clusterConfig.nodes).length;
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if (nodeCount <= 1)
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return false;
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const targetShardsPerNode = Math.ceil(this.clusterConfig.shards.count / nodeCount);
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const variance = 2; // Allow some variance
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for (const nodeInfo of Object.values(this.clusterConfig.nodes)) {
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const shardCount = nodeInfo.shards.length;
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if (Math.abs(shardCount - targetShardsPerNode) > variance) {
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return true;
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}
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}
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return false;
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}
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/**
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* Trigger shard rebalancing
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*/
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async triggerRebalance() {
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// Only leader can trigger rebalance
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if (this.clusterConfig?.leader !== this.nodeId)
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return;
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console.log(`[${this.nodeId}] Triggering shard rebalance`);
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// This will be implemented with actual data migration
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// For now, just redistribute shard assignments
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await this.redistributeShards();
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this.emit('rebalanceTriggered');
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}
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/**
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* Redistribute shards among active nodes
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*/
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async redistributeShards() {
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if (!this.clusterConfig)
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return;
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const activeNodes = Object.keys(this.clusterConfig.nodes)
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.filter(id => Date.now() - this.clusterConfig.nodes[id].lastSeen < this.NODE_TIMEOUT);
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if (activeNodes.length === 0)
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return;
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const shardsPerNode = Math.ceil(this.clusterConfig.shards.count / activeNodes.length);
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const newAssignments = {};
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// Clear current shard assignments from nodes
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for (const nodeInfo of Object.values(this.clusterConfig.nodes)) {
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nodeInfo.shards = [];
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}
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// Redistribute shards
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let nodeIndex = 0;
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for (let i = 0; i < this.clusterConfig.shards.count; i++) {
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const shardId = `shard-${i.toString().padStart(3, '0')}`;
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const primaryNode = activeNodes[nodeIndex % activeNodes.length];
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// Assign primary
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newAssignments[shardId] = [primaryNode];
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this.clusterConfig.nodes[primaryNode].shards.push(shardId);
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// Assign replicas
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const replicas = [];
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for (let r = 1; r < Math.min(this.clusterConfig.settings.replicationFactor, activeNodes.length); r++) {
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const replicaNode = activeNodes[(nodeIndex + r) % activeNodes.length];
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if (replicaNode !== primaryNode) {
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replicas.push(replicaNode);
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}
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}
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if (replicas.length > 0) {
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newAssignments[shardId].push(...replicas);
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}
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nodeIndex++;
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}
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this.clusterConfig.shards.assignments = newAssignments;
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this.clusterConfig.version++;
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this.clusterConfig.updated = Date.now();
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await this.saveClusterConfig();
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console.log(`[${this.nodeId}] Rebalanced ${this.clusterConfig.shards.count} shards across ${activeNodes.length} nodes`);
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}
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/**
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* Detect our public endpoint
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*/
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async detectEndpoint(port) {
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// Try to detect public IP
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const interfaces = os.networkInterfaces();
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let ip = '127.0.0.1';
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// Find first non-internal IPv4 address
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for (const iface of Object.values(interfaces)) {
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if (!iface)
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continue;
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for (const addr of iface) {
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if (addr.family === 'IPv4' && !addr.internal) {
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ip = addr.address;
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break;
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}
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}
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}
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// In cloud environments, might need to detect public IP differently
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if (process.env.PUBLIC_IP) {
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ip = process.env.PUBLIC_IP;
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}
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else if (process.env.KUBERNETES_SERVICE_HOST) {
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// In Kubernetes, use pod IP
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ip = process.env.POD_IP || ip;
|
|
}
|
|
return `http://${ip}:${port}`;
|
|
}
|
|
/**
|
|
* Generate unique node ID
|
|
*/
|
|
generateNodeId() {
|
|
const hostname = os.hostname();
|
|
const pid = process.pid;
|
|
const random = Math.random().toString(36).substring(2, 8);
|
|
return `${hostname}-${pid}-${random}`;
|
|
}
|
|
/**
|
|
* Get current cluster configuration
|
|
*/
|
|
getClusterConfig() {
|
|
return this.clusterConfig;
|
|
}
|
|
/**
|
|
* Get active nodes
|
|
*/
|
|
getActiveNodes() {
|
|
if (!this.clusterConfig)
|
|
return [];
|
|
const now = Date.now();
|
|
return Object.values(this.clusterConfig.nodes)
|
|
.filter(node => now - node.lastSeen < this.NODE_TIMEOUT);
|
|
}
|
|
/**
|
|
* Get shards assigned to this node
|
|
*/
|
|
getMyShards() {
|
|
return this.nodeInfo.shards;
|
|
}
|
|
/**
|
|
* Update node statistics
|
|
*/
|
|
updateStats(stats) {
|
|
Object.assign(this.nodeInfo.stats, stats);
|
|
}
|
|
}
|
|
//# sourceMappingURL=storageDiscovery.js.map
|