import pino from 'pino';
import { CONFIG } from '../config.js';
// @ts-ignore - pino has complex types
// IMPORTANTE: Logs devem ir para stderr, não stdout
// O stdout é reservado para mensagens JSON-RPC do protocolo MCP
export const logger = pino({
level: CONFIG.logging.level
}, pino.destination({ dest: 2 })); // 2 = stderr
// Helper para logs estruturados
export function logToolCall(toolName: string, params: unknown, duration?: number) {
logger.info({
type: 'tool_call',
tool: toolName,
params,
duration
}, `Tool called: ${toolName}`);
}
export function logAPIRequest(endpoint: string, params: unknown, duration?: number) {
logger.debug({
type: 'api_request',
endpoint,
params,
duration
}, `API request: ${endpoint}`);
}
export function logCacheHit(key: string) {
logger.debug({
type: 'cache',
event: 'hit',
key
}, `Cache hit: ${key}`);
}
export function logCacheMiss(key: string) {
logger.debug({
type: 'cache',
event: 'miss',
key
}, `Cache miss: ${key}`);
}
export function logError(error: Error, context?: unknown) {
logger.error({
type: 'error',
error: {
name: error.name,
message: error.message,
stack: error.stack
},
context
}, `Error: ${error.message}`);
}
export function logMetric(metric: string, value: number, tags?: Record<string, string>) {
logger.info({
type: 'metric',
metric,
value,
tags
}, `Metric: ${metric}=${value}`);
}
