chore: recovery checkpoint - v3.0 API successfully recovered
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
This commit is contained in:
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895 changed files with 143654 additions and 28268 deletions
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/**
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* Distributed Coordinator for Brainy 3.0
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* Provides leader election, consensus, and coordination for distributed instances
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*/
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import { EventEmitter } from 'events';
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import { createHash } from 'crypto';
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/**
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* Distributed Coordinator implementing Raft-like consensus
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*/
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export class DistributedCoordinator extends EventEmitter {
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constructor(config = {}) {
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super();
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this.nodes = new Map();
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this.isRunning = false;
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this.votesReceived = new Set();
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this.currentTerm = 0;
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this.lastLogIndex = -1;
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this.lastLogTerm = 0;
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this.logEntries = [];
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this.transport = null; // For migration proposals
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this.pendingMigrations = new Map();
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this.committedMigrations = new Set();
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// Generate node ID if not provided
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this.nodeId = config.nodeId || this.generateNodeId();
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// Configuration
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this.heartbeatInterval = config.heartbeatInterval || 1000;
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this.electionTimeout = config.electionTimeout || 5000;
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// Initialize consensus state
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this.consensusState = {
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term: 0,
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votedFor: null,
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leader: null,
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state: 'follower'
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};
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// Register this node
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this.nodes.set(this.nodeId, {
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id: this.nodeId,
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address: config.address || 'localhost',
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port: config.port || 3000,
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lastSeen: Date.now(),
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status: 'active',
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state: 'follower',
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lastHeartbeat: Date.now()
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});
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// Register other nodes if provided
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if (config.nodes) {
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this.registerNodes(config.nodes);
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}
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}
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/**
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* Start the coordinator
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*/
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async start(networkTransport) {
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if (this.isRunning)
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return;
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this.isRunning = true;
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this.networkTransport = networkTransport;
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// Setup network message handlers if transport is provided
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if (this.networkTransport) {
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this.setupNetworkHandlers();
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}
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this.emit('started', { nodeId: this.nodeId });
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// Start as follower
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this.becomeFollower();
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}
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/**
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* Setup network message handlers
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*/
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setupNetworkHandlers() {
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if (!this.networkTransport)
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return;
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// Register message handlers directly on the messageHandlers map
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const handlers = this.networkTransport.messageHandlers;
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// Handle vote requests
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handlers.set('requestVote', async (msg) => {
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const response = await this.handleVoteRequest(msg);
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// Send response back
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if (this.networkTransport) {
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await this.networkTransport.sendToNode(msg.from, 'voteResponse', response);
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}
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return response;
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});
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// Handle vote responses
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handlers.set('voteResponse', async (msg) => {
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this.handleVoteResponse(msg);
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});
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// Handle heartbeats/append entries
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handlers.set('appendEntries', async (msg) => {
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const response = await this.handleAppendEntries(msg);
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// Send response back
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if (this.networkTransport) {
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await this.networkTransport.sendToNode(msg.from, 'appendResponse', response);
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}
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return response;
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});
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// Handle append responses
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handlers.set('appendResponse', async (msg) => {
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this.handleAppendResponse(msg);
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});
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}
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/**
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* Stop the coordinator
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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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if (this.electionTimer) {
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clearTimeout(this.electionTimer);
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this.electionTimer = undefined;
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}
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if (this.heartbeatTimer) {
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clearInterval(this.heartbeatTimer);
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this.heartbeatTimer = undefined;
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}
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this.emit('stopped');
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}
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/**
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* Register additional nodes
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*/
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registerNodes(nodes) {
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for (const node of nodes) {
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const [address, port] = node.split(':');
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const nodeId = this.generateNodeId(node);
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if (!this.nodes.has(nodeId)) {
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this.nodes.set(nodeId, {
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id: nodeId,
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address,
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port: parseInt(port || '3000'),
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lastSeen: Date.now(),
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status: 'active',
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state: 'follower'
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});
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}
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}
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}
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/**
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* Become a follower
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*/
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becomeFollower() {
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this.consensusState.state = 'follower';
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const node = this.nodes.get(this.nodeId);
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if (node) {
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node.state = 'follower';
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}
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this.resetElectionTimeout();
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this.emit('stateChange', 'follower');
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}
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/**
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* Become a candidate and start election
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*/
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async becomeCandidate() {
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this.consensusState.state = 'candidate';
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this.currentTerm++;
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this.consensusState.term = this.currentTerm;
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this.consensusState.votedFor = this.nodeId;
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this.votesReceived = new Set([this.nodeId]);
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const node = this.nodes.get(this.nodeId);
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if (node) {
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node.state = 'candidate';
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}
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this.emit('stateChange', 'candidate');
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// Request votes from all other nodes
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await this.requestVotes();
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// Reset election timeout
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this.resetElectionTimeout();
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}
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/**
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* Become the leader
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*/
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becomeLeader() {
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this.consensusState.state = 'leader';
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this.consensusState.leader = this.nodeId;
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const node = this.nodes.get(this.nodeId);
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if (node) {
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node.state = 'leader';
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}
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// Stop election timer as leader
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if (this.electionTimer) {
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clearTimeout(this.electionTimer);
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this.electionTimer = undefined;
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}
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this.emit('stateChange', 'leader');
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this.emit('leaderElected', this.nodeId);
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// Start sending heartbeats
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this.startHeartbeat();
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}
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/**
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* Request votes from all nodes
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*/
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async requestVotes() {
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if (!this.networkTransport) {
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// Simulate vote for testing
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this.checkVoteMajority();
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return;
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}
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const voteRequest = {
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type: 'requestVote',
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term: this.currentTerm,
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candidateId: this.nodeId,
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lastLogIndex: this.getLastLogIndex(),
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lastLogTerm: this.getLastLogTerm()
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};
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// Send vote requests to all other nodes
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for (const [nodeId] of this.nodes) {
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if (nodeId !== this.nodeId) {
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try {
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await this.networkTransport.sendToNode(nodeId, 'requestVote', voteRequest);
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}
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catch (err) {
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console.error(`Failed to request vote from ${nodeId}:`, err);
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}
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}
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}
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}
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/**
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* Handle vote request from another node
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*/
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async handleVoteRequest(msg) {
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const { term, candidateId, lastLogIndex, lastLogTerm } = msg.data;
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// Update term if necessary
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if (term > this.currentTerm) {
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this.currentTerm = term;
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this.consensusState.term = term;
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this.consensusState.votedFor = null;
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this.becomeFollower();
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}
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// Grant vote if conditions are met
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let voteGranted = false;
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if (term >= this.currentTerm &&
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(!this.consensusState.votedFor || this.consensusState.votedFor === candidateId) &&
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this.isLogUpToDate(lastLogIndex, lastLogTerm)) {
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this.consensusState.votedFor = candidateId;
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voteGranted = true;
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this.resetElectionTimeout();
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}
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return {
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type: 'voteResponse',
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term: this.currentTerm,
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voteGranted
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};
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}
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/**
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* Handle vote response
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*/
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handleVoteResponse(msg) {
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const { term, voteGranted } = msg.data;
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// Ignore old responses
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if (term < this.currentTerm)
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return;
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// Update term if necessary
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if (term > this.currentTerm) {
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this.currentTerm = term;
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this.consensusState.term = term;
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this.becomeFollower();
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return;
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}
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// Count vote if granted
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if (voteGranted && this.consensusState.state === 'candidate') {
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this.votesReceived.add(msg.from);
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this.checkVoteMajority();
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}
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}
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/**
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* Check if we have majority votes
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*/
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checkVoteMajority() {
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const majority = Math.floor(this.nodes.size / 2) + 1;
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if (this.votesReceived.size >= majority) {
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this.becomeLeader();
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}
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}
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/**
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* Handle append entries (heartbeat) from leader
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*/
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async handleAppendEntries(msg) {
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const { term, leaderId, prevLogIndex, prevLogTerm, entries, leaderCommit } = msg.data;
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// Update term if necessary
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if (term > this.currentTerm) {
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this.currentTerm = term;
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this.consensusState.term = term;
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this.consensusState.votedFor = null;
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this.becomeFollower();
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}
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// Reset election timeout when receiving valid heartbeat
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if (term >= this.currentTerm) {
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this.consensusState.leader = leaderId;
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this.resetElectionTimeout();
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// Update leader node's last heartbeat
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const leaderNode = this.nodes.get(leaderId);
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if (leaderNode) {
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leaderNode.lastHeartbeat = Date.now();
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leaderNode.lastSeen = Date.now();
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}
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}
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// Check log consistency
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let success = false;
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if (term >= this.currentTerm) {
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if (this.checkLogConsistency(prevLogIndex, prevLogTerm)) {
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// Append new entries if any
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if (entries && entries.length > 0) {
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this.appendLogEntries(prevLogIndex, entries);
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}
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success = true;
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}
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}
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return {
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type: 'appendResponse',
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term: this.currentTerm,
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success
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};
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}
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/**
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* Handle append response from follower
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*/
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handleAppendResponse(msg) {
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const { term, success } = msg.data;
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// Update term if necessary
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if (term > this.currentTerm) {
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this.currentTerm = term;
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this.consensusState.term = term;
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this.becomeFollower();
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}
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// Process successful append
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if (success && this.consensusState.state === 'leader') {
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// Update follower's match index
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// In a real implementation, this would track replication progress
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}
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}
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/**
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* Send heartbeat to followers
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*/
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async sendHeartbeat() {
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if (!this.networkTransport) {
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// Fallback for testing
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await new Promise(resolve => setTimeout(resolve, 10));
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return;
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}
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const heartbeat = {
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type: 'appendEntries',
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term: this.currentTerm,
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leaderId: this.nodeId,
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prevLogIndex: this.getLastLogIndex(),
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prevLogTerm: this.getLastLogTerm(),
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entries: [],
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leaderCommit: 0
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};
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// Send heartbeat to all followers
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for (const [nodeId] of this.nodes) {
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if (nodeId !== this.nodeId) {
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try {
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await this.networkTransport.sendToNode(nodeId, 'appendEntries', heartbeat);
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}
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catch (err) {
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// Node might be down, mark as suspected
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const node = this.nodes.get(nodeId);
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if (node) {
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node.status = 'suspected';
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}
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}
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}
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}
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}
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/**
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* Start heartbeat timer as leader
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*/
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startHeartbeat() {
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if (this.heartbeatTimer) {
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clearInterval(this.heartbeatTimer);
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}
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this.heartbeatTimer = setInterval(() => {
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this.sendHeartbeat();
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}, this.heartbeatInterval);
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// Send immediate heartbeat
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this.sendHeartbeat();
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}
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/**
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* Reset election timeout
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*/
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resetElectionTimeout() {
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if (this.electionTimer) {
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clearTimeout(this.electionTimer);
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}
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// Randomize timeout to prevent split votes
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const timeout = this.electionTimeout + Math.random() * this.electionTimeout;
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this.electionTimer = setTimeout(() => {
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if (this.consensusState.state === 'follower') {
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this.becomeCandidate();
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}
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}, timeout);
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}
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/**
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* Check if log is up to date
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*/
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isLogUpToDate(lastLogIndex, lastLogTerm) {
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const myLastLogTerm = this.getLastLogTerm();
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const myLastLogIndex = this.getLastLogIndex();
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if (lastLogTerm > myLastLogTerm)
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return true;
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if (lastLogTerm < myLastLogTerm)
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return false;
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return lastLogIndex >= myLastLogIndex;
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}
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/**
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* Check log consistency
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*/
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checkLogConsistency(prevLogIndex, prevLogTerm) {
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if (prevLogIndex === -1)
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return true;
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if (prevLogIndex >= this.logEntries.length)
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return false;
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const entry = this.logEntries[prevLogIndex];
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return entry && entry.term === prevLogTerm;
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}
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/**
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* Append log entries
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*/
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appendLogEntries(prevLogIndex, entries) {
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// Remove conflicting entries
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this.logEntries = this.logEntries.slice(0, prevLogIndex + 1);
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// Append new entries
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for (const entry of entries) {
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this.logEntries.push({
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term: entry.term,
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index: this.logEntries.length,
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data: entry.data
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});
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}
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this.lastLogIndex = this.logEntries.length - 1;
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if (this.lastLogIndex >= 0) {
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this.lastLogTerm = this.logEntries[this.lastLogIndex].term;
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}
|
||||
}
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/**
|
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* Get last log index
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*/
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getLastLogIndex() {
|
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return this.lastLogIndex;
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}
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/**
|
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* Get last log term
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*/
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getLastLogTerm() {
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return this.lastLogTerm;
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}
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/**
|
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* Generate a unique node ID
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||||
*/
|
||||
generateNodeId(seed) {
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const source = seed || `${process.pid}-${Date.now()}-${Math.random()}`;
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||||
return createHash('sha256').update(source).digest('hex').substring(0, 16);
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||||
}
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||||
/**
|
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* Get current leader
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||||
*/
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getLeader() {
|
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return this.consensusState.leader;
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||||
}
|
||||
/**
|
||||
* Propose a shard migration to the cluster
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||||
*/
|
||||
async proposeMigration(migration) {
|
||||
if (!this.isLeader()) {
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||||
throw new Error('Only leader can propose migrations');
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||||
}
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// Broadcast migration proposal to all nodes
|
||||
const message = {
|
||||
type: 'migration-proposal',
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||||
migration,
|
||||
timestamp: Date.now()
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||||
};
|
||||
await this.transport.broadcast('migration', message);
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// Store migration as pending
|
||||
this.pendingMigrations.set(migration.migrationId, {
|
||||
...migration,
|
||||
status: 'pending'
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||||
});
|
||||
}
|
||||
/**
|
||||
* Get migration status
|
||||
*/
|
||||
async getMigrationStatus(migrationId) {
|
||||
const migration = this.pendingMigrations.get(migrationId);
|
||||
if (!migration) {
|
||||
// Check if it was committed
|
||||
return this.committedMigrations.has(migrationId) ? 'committed' : 'rejected';
|
||||
}
|
||||
return migration.status || 'pending';
|
||||
}
|
||||
/**
|
||||
* Check if this node is the leader
|
||||
*/
|
||||
isLeader() {
|
||||
return this.consensusState.state === 'leader';
|
||||
}
|
||||
/**
|
||||
* Get all nodes in the cluster
|
||||
*/
|
||||
getNodes() {
|
||||
return Array.from(this.nodes.values());
|
||||
}
|
||||
/**
|
||||
* Get cluster health status
|
||||
*/
|
||||
getHealth() {
|
||||
const now = Date.now();
|
||||
const activeNodes = Array.from(this.nodes.values()).filter(node => now - node.lastSeen < this.electionTimeout).length;
|
||||
return {
|
||||
healthy: this.consensusState.leader !== null && activeNodes > this.nodes.size / 2,
|
||||
leader: this.consensusState.leader,
|
||||
nodes: this.nodes.size,
|
||||
activeNodes
|
||||
};
|
||||
}
|
||||
/**
|
||||
* Propose a command to the cluster
|
||||
*/
|
||||
async proposeCommand(command) {
|
||||
if (this.consensusState.state !== 'leader') {
|
||||
throw new Error(`Not the leader. Current leader: ${this.consensusState.leader}`);
|
||||
}
|
||||
// Add to log
|
||||
const entry = {
|
||||
term: this.currentTerm,
|
||||
index: this.logEntries.length,
|
||||
data: command
|
||||
};
|
||||
this.logEntries.push(entry);
|
||||
this.lastLogIndex = entry.index;
|
||||
this.lastLogTerm = entry.term;
|
||||
// Replicate to followers
|
||||
await this.sendHeartbeat();
|
||||
this.emit('commandProposed', command);
|
||||
}
|
||||
/**
|
||||
* Get current state
|
||||
*/
|
||||
getState() {
|
||||
return { ...this.consensusState };
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Create a coordinator instance
|
||||
*/
|
||||
export function createCoordinator(config) {
|
||||
return new DistributedCoordinator(config);
|
||||
}
|
||||
//# sourceMappingURL=coordinator.js.map
|
||||
Loading…
Add table
Add a link
Reference in a new issue