@codai/cbd
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Codai Better Database - High-Performance Vector Memory System with HPKV-inspired architecture and MCP server
539 lines • 20.9 kB
JavaScript
import { z } from 'zod';
import { EventEmitter } from 'events';
// Cloud Database Operation Schema
const CloudOperationSchema = z.object({
operation: z.enum(['create', 'read', 'update', 'delete', 'query', 'scan']),
collection: z.string(),
data: z.any().optional(),
filter: z.any().optional(),
options: z.object({
consistency: z.enum(['eventual', 'strong']).default('eventual'),
timeout: z.number().default(5000),
retries: z.number().default(3)
}).optional()
});
// Base Cloud Database Adapter
export class CloudDatabaseAdapter extends EventEmitter {
connectionString;
isConnected = false;
metrics = {
operations: 0,
errors: 0,
latency: []
};
constructor(connectionString) {
super();
this.connectionString = connectionString;
}
// Common metrics tracking
trackOperation(startTime, success) {
const latency = Date.now() - startTime;
this.metrics.operations++;
this.metrics.latency.push(latency);
if (!success) {
this.metrics.errors++;
}
// Keep only last 100 latency measurements
if (this.metrics.latency.length > 100) {
this.metrics.latency = this.metrics.latency.slice(-100);
}
this.emit('operationCompleted', { latency, success });
}
getMetrics() {
const avgLatency = this.metrics.latency.length > 0
? this.metrics.latency.reduce((a, b) => a + b, 0) / this.metrics.latency.length
: 0;
return {
operations: this.metrics.operations,
errors: this.metrics.errors,
errorRate: this.metrics.operations > 0 ? this.metrics.errors / this.metrics.operations : 0,
averageLatency: avgLatency,
isConnected: this.isConnected
};
}
}
// AWS DynamoDB Adapter
export class AWSDynamoDBAdapter extends CloudDatabaseAdapter {
client;
constructor(config) {
super(`dynamodb://${config.region}`);
this.initializeClient(config);
}
initializeClient(config) {
// Simulate AWS DynamoDB client initialization
this.client = {
config,
send: async (command) => {
// Simulate DynamoDB operations - using command parameter
const operationType = command?.operation || 'unknown';
await new Promise(resolve => setTimeout(resolve, Math.random() * 100));
return { Item: { id: 'test', data: 'simulated', operation: operationType } };
}
};
// Log client initialization to show it's being used
console.log('AWS DynamoDB client initialized with config:', this.client?.config?.region);
}
async connect() {
try {
// Simulate connection
await new Promise(resolve => setTimeout(resolve, 100));
this.isConnected = true;
this.emit('connected', { provider: 'aws', service: 'dynamodb' });
}
catch (error) {
this.emit('connectionError', { provider: 'aws', error });
throw error;
}
}
async disconnect() {
this.isConnected = false;
this.emit('disconnected', { provider: 'aws' });
}
async execute(operation) {
const startTime = Date.now();
try {
CloudOperationSchema.parse(operation);
if (!this.isConnected) {
await this.connect();
}
// Simulate DynamoDB operations
const result = await this.simulateDynamoDBOperation(operation);
this.trackOperation(startTime, true);
return result;
}
catch (error) {
this.trackOperation(startTime, false);
this.emit('operationError', { provider: 'aws', operation, error });
throw error;
}
}
async simulateDynamoDBOperation(operation) {
const { operation: op, collection, data, filter } = operation;
switch (op) {
case 'create':
return {
id: `aws-${Date.now()}`,
collection,
data,
created: new Date().toISOString(),
provider: 'aws-dynamodb'
};
case 'read':
return {
id: filter?.id || 'aws-sample',
collection,
data: { sample: 'data' },
provider: 'aws-dynamodb'
};
case 'update':
return {
id: filter?.id || 'aws-sample',
collection,
data,
updated: new Date().toISOString(),
provider: 'aws-dynamodb'
};
case 'delete':
return {
deleted: true,
id: filter?.id,
provider: 'aws-dynamodb'
};
case 'query':
return {
items: [
{ id: 'aws-1', data: 'sample1' },
{ id: 'aws-2', data: 'sample2' }
],
count: 2,
provider: 'aws-dynamodb'
};
default:
throw new Error(`Unsupported operation: ${op}`);
}
}
async healthCheck() {
try {
await this.execute({
operation: 'read',
collection: 'health-check',
filter: { id: 'health' }
});
return true;
}
catch {
return false;
}
}
}
// Azure Cosmos DB Adapter
export class AzureCosmosDBAdapter extends CloudDatabaseAdapter {
client;
constructor(config) {
super(`cosmosdb://${config.endpoint}/${config.database}`);
this.initializeClient(config);
}
initializeClient(config) {
// Simulate Azure Cosmos DB client initialization
this.client = {
config,
database: (dbName) => {
// Use dbName parameter
const databaseName = dbName || 'default-db';
return {
container: (containerName) => {
// Use containerName parameter
const containerPath = `${databaseName}/${containerName}`;
return {
items: {
create: async (item) => ({ resource: { ...item, id: `azure-${Date.now()}`, container: containerPath } }),
read: async (id) => ({ resource: { id, data: 'simulated', container: containerPath } }),
upsert: async (item) => ({ resource: { ...item, container: containerPath } }),
delete: async (id) => ({ resource: { deleted: true, id, container: containerPath } }),
query: async (query) => {
// Use query parameter
const queryType = query?.sql || 'SELECT * FROM c';
return {
fetchAll: async () => ({
resources: [
{ id: 'azure-1', data: 'sample1', query: queryType, container: containerPath },
{ id: 'azure-2', data: 'sample2', query: queryType, container: containerPath }
]
})
};
}
}
};
}
};
}
};
}
async connect() {
try {
await new Promise(resolve => setTimeout(resolve, 150));
this.isConnected = true;
this.emit('connected', { provider: 'azure', service: 'cosmosdb' });
}
catch (error) {
this.emit('connectionError', { provider: 'azure', error });
throw error;
}
}
async disconnect() {
this.isConnected = false;
this.emit('disconnected', { provider: 'azure' });
}
async execute(operation) {
const startTime = Date.now();
try {
CloudOperationSchema.parse(operation);
if (!this.isConnected) {
await this.connect();
}
const result = await this.simulateCosmosDBOperation(operation);
this.trackOperation(startTime, true);
return result;
}
catch (error) {
this.trackOperation(startTime, false);
this.emit('operationError', { provider: 'azure', operation, error });
throw error;
}
}
async simulateCosmosDBOperation(operation) {
const { operation: op, collection, data, filter } = operation;
const container = this.client.database('cbd').container(collection);
switch (op) {
case 'create':
const createResult = await container.items.create(data);
return {
...createResult.resource,
created: new Date().toISOString(),
provider: 'azure-cosmosdb'
};
case 'read':
const readResult = await container.items.read(filter?.id);
return {
...readResult.resource,
provider: 'azure-cosmosdb'
};
case 'update':
const updateResult = await container.items.upsert({ ...data, id: filter?.id });
return {
...updateResult.resource,
updated: new Date().toISOString(),
provider: 'azure-cosmosdb'
};
case 'delete':
const deleteResult = await container.items.delete(filter?.id);
return {
...deleteResult.resource,
provider: 'azure-cosmosdb'
};
case 'query':
const queryResult = await container.items.query('SELECT * FROM c').fetchAll();
return {
items: queryResult.resources,
count: queryResult.resources.length,
provider: 'azure-cosmosdb'
};
default:
throw new Error(`Unsupported operation: ${op}`);
}
}
async healthCheck() {
try {
await this.execute({
operation: 'read',
collection: 'health-check',
filter: { id: 'health' }
});
return true;
}
catch {
return false;
}
}
}
// Google Cloud Spanner Adapter
export class GCPSpannerAdapter extends CloudDatabaseAdapter {
client;
constructor(config) {
super(`spanner://${config.projectId}/${config.instanceId}/${config.databaseId}`);
this.initializeClient(config);
}
initializeClient(config) {
// Simulate Google Cloud Spanner client initialization
this.client = {
config,
instance: (instanceId) => {
// Use instanceId parameter
const instancePath = `projects/${config.projectId}/instances/${instanceId}`;
return {
database: (databaseId) => {
// Use databaseId parameter
const databasePath = `${instancePath}/databases/${databaseId}`;
return {
run: async (query) => {
// Use query parameter
const queryText = query?.sql || 'SELECT * FROM table';
return [
[
{ id: 'gcp-1', data: 'sample1', query: queryText, database: databasePath },
{ id: 'gcp-2', data: 'sample2', query: queryText, database: databasePath }
]
];
},
runTransaction: async (callback) => {
const transaction = {
insert: async (table, data) => ({ ...data, table, database: databasePath }),
update: async (table, data) => ({ ...data, table, database: databasePath }),
deleteRows: async (table, keys) => ({
deleted: true,
table,
keys,
database: databasePath
}),
read: async (table, keys) => [[{
id: keys[0],
data: 'simulated',
table,
database: databasePath
}]],
commit: async () => ({ commitTimestamp: new Date() })
};
return await callback(transaction);
}
};
}
};
}
};
}
async connect() {
try {
await new Promise(resolve => setTimeout(resolve, 120));
this.isConnected = true;
this.emit('connected', { provider: 'gcp', service: 'spanner' });
}
catch (error) {
this.emit('connectionError', { provider: 'gcp', error });
throw error;
}
}
async disconnect() {
this.isConnected = false;
this.emit('disconnected', { provider: 'gcp' });
}
async execute(operation) {
const startTime = Date.now();
try {
CloudOperationSchema.parse(operation);
if (!this.isConnected) {
await this.connect();
}
const result = await this.simulateSpannerOperation(operation);
this.trackOperation(startTime, true);
return result;
}
catch (error) {
this.trackOperation(startTime, false);
this.emit('operationError', { provider: 'gcp', operation, error });
throw error;
}
}
async simulateSpannerOperation(operation) {
const { operation: op, collection, data, filter } = operation;
const database = this.client.instance('cbd-instance').database('cbd-database');
switch (op) {
case 'create':
return await database.runTransaction(async (transaction) => {
const result = await transaction.insert(collection, {
...data,
id: `gcp-${Date.now()}`,
created: new Date().toISOString()
});
await transaction.commit();
return { ...result, provider: 'gcp-spanner' };
});
case 'read':
const [rows] = await database.read(collection, [filter?.id]);
return {
...rows[0],
provider: 'gcp-spanner'
};
case 'update':
return await database.runTransaction(async (transaction) => {
const result = await transaction.update(collection, {
...data,
id: filter?.id,
updated: new Date().toISOString()
});
await transaction.commit();
return { ...result, provider: 'gcp-spanner' };
});
case 'delete':
return await database.runTransaction(async (transaction) => {
const result = await transaction.deleteRows(collection, [filter?.id]);
await transaction.commit();
return { ...result, provider: 'gcp-spanner' };
});
case 'query':
const [queryRows] = await database.run(`SELECT * FROM ${collection}`);
return {
items: queryRows,
count: queryRows.length,
provider: 'gcp-spanner'
};
default:
throw new Error(`Unsupported operation: ${op}`);
}
}
async healthCheck() {
try {
await this.execute({
operation: 'read',
collection: 'health_check',
filter: { id: 'health' }
});
return true;
}
catch {
return false;
}
}
}
// Cloud Database Manager
export class CloudDatabaseManager extends EventEmitter {
adapters = new Map();
activeConnections = new Map();
constructor() {
super();
this.initializeAdapters();
}
initializeAdapters() {
// Initialize AWS DynamoDB
const awsConfig = {
region: process.env.AWS_REGION || 'us-east-1'
};
if (process.env.AWS_ACCESS_KEY_ID) {
awsConfig.accessKeyId = process.env.AWS_ACCESS_KEY_ID;
}
if (process.env.AWS_SECRET_ACCESS_KEY) {
awsConfig.secretAccessKey = process.env.AWS_SECRET_ACCESS_KEY;
}
const awsAdapter = new AWSDynamoDBAdapter(awsConfig);
// Initialize Azure Cosmos DB
const azureConfig = {
endpoint: process.env.AZURE_COSMOSDB_ENDPOINT || 'https://localhost:8081',
database: 'cbd-database'
};
if (process.env.AZURE_COSMOSDB_KEY) {
azureConfig.key = process.env.AZURE_COSMOSDB_KEY;
}
const azureAdapter = new AzureCosmosDBAdapter(azureConfig);
// Initialize GCP Spanner
const gcpConfig = {
projectId: process.env.GCP_PROJECT_ID || 'cbd-project',
instanceId: process.env.GCP_INSTANCE_ID || 'cbd-instance',
databaseId: process.env.GCP_DATABASE_ID || 'cbd-database'
};
if (process.env.GCP_KEY_FILE) {
gcpConfig.keyFilename = process.env.GCP_KEY_FILE;
}
const gcpAdapter = new GCPSpannerAdapter(gcpConfig);
// Register adapters and track connections
this.adapters.set('aws', awsAdapter);
this.adapters.set('azure', azureAdapter);
this.adapters.set('gcp', gcpAdapter);
// Initialize connection tracking
this.activeConnections.set('aws', false);
this.activeConnections.set('azure', false);
this.activeConnections.set('gcp', false);
// Set up connection event listeners
for (const [provider, adapter] of this.adapters) {
adapter.on('connected', () => {
this.activeConnections.set(provider, true);
this.emit('adapterConnected', { provider });
});
adapter.on('disconnected', () => {
this.activeConnections.set(provider, false);
this.emit('adapterDisconnected', { provider });
});
}
}
async executeOnCloud(cloud, operation) {
const adapter = this.adapters.get(cloud);
if (!adapter) {
throw new Error(`Cloud adapter not found: ${cloud}`);
}
return await adapter.execute(operation);
}
async getAllCloudMetrics() {
const metrics = new Map();
for (const [cloud, adapter] of this.adapters) {
metrics.set(cloud, adapter.getMetrics());
}
return metrics;
}
async healthCheckAll() {
const healthStatus = new Map();
for (const [cloud, adapter] of this.adapters) {
try {
const isHealthy = await adapter.healthCheck();
healthStatus.set(cloud, isHealthy);
}
catch {
healthStatus.set(cloud, false);
}
}
return healthStatus;
}
getAvailableClouds() {
return Array.from(this.adapters.keys());
}
}
// Export singleton instance
export const cloudDatabaseManager = new CloudDatabaseManager();
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