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* Logger - Main logging singleton with public API
*/
import type { LogLevel, GlobalLogEntry, SiteLogEntry } from './types.js';
import { LogWriter } from './log-writer.js';
import { LogCleaner } from './log-cleaner.js';
export class Logger {
private writer: LogWriter;
private cleaner: LogCleaner;
private logLevel: LogLevel;
private cleanupInterval: NodeJS.Timeout | null = null;
constructor() {
this.writer = new LogWriter();
this.cleaner = new LogCleaner();
this.logLevel = this.getLogLevelFromEnv();
}
/**
* Get log level from QUIQR_LOGLEVEL environment variable
*/
private getLogLevelFromEnv(): LogLevel {
const envLevel = process.env.QUIQR_LOGLEVEL?.toLowerCase();
switch (envLevel) {
case 'debug':
return 'debug';
case 'info':
return 'info';
case 'warning':
return 'warning';
case 'error':
return 'error';
default:
return 'info'; // Default log level
}
}
/**
* Check if a log level should be written based on current log level
*/
private shouldLog(level: LogLevel): boolean {
const levels: LogLevel[] = ['debug', 'info', 'warning', 'error'];
const currentIndex = levels.indexOf(this.logLevel);
const messageIndex = levels.indexOf(level);
return messageIndex >= currentIndex;
}
/**
* Create a timestamp in ISO 8601 format
*/
private getTimestamp(): string {
return new Date().toISOString();
}
/**
* Log a global debug message
*/
debug(category: string, message: string, metadata?: Record<string, unknown>): void {
if (!this.shouldLog('debug')) {
return;
}
const entry: GlobalLogEntry = {
type: 'global',
timestamp: this.getTimestamp(),
level: 'debug',
category,
message,
...(metadata && { metadata }),
};
this.writer.write(entry).catch(err => {
console.error('Failed to write debug log:', err);
});
}
/**
* Log a global info message
*/
info(category: string, message: string, metadata?: Record<string, unknown>): void {
if (!this.shouldLog('info')) {
return;
}
const entry: GlobalLogEntry = {
type: 'global',
timestamp: this.getTimestamp(),
level: 'info',
category,
message,
...(metadata && { metadata }),
};
this.writer.write(entry).catch(err => {
console.error('Failed to write info log:', err);
});
}
/**
* Log a global warning message
*/
warning(category: string, message: string, metadata?: Record<string, unknown>): void {
if (!this.shouldLog('warning')) {
return;
}
const entry: GlobalLogEntry = {
type: 'global',
timestamp: this.getTimestamp(),
level: 'warning',
category,
message,
...(metadata && { metadata }),
};
this.writer.write(entry).catch(err => {
console.error('Failed to write warning log:', err);
});
}
/**
* Log a global error message
*/
error(category: string, message: string, metadata?: Record<string, unknown>): void {
if (!this.shouldLog('error')) {
return;
}
const entry: GlobalLogEntry = {
type: 'global',
timestamp: this.getTimestamp(),
level: 'error',
category,
message,
...(metadata && { metadata }),
};
this.writer.write(entry).catch(err => {
console.error('Failed to write error log:', err);
});
}
/**
* Log a site-specific debug message
*/
debugSite(
siteKey: string,
workspaceKey: string,
category: string,
message: string,
metadata?: Record<string, unknown>
): void {
if (!this.shouldLog('debug')) {
return;
}
const entry: SiteLogEntry = {
type: 'site',
siteKey,
workspaceKey,
timestamp: this.getTimestamp(),
level: 'debug',
category,
message,
...(metadata && { metadata }),
};
this.writer.write(entry).catch(err => {
console.error('Failed to write site debug log:', err);
});
}
/**
* Log a site-specific info message
*/
infoSite(
siteKey: string,
workspaceKey: string,
category: string,
message: string,
metadata?: Record<string, unknown>
): void {
Iif (!this.shouldLog('info')) {
return;
}
const entry: SiteLogEntry = {
type: 'site',
siteKey,
workspaceKey,
timestamp: this.getTimestamp(),
level: 'info',
category,
message,
...(metadata && { metadata }),
};
this.writer.write(entry).catch(err => {
console.error('Failed to write site info log:', err);
});
}
/**
* Log a site-specific warning message
*/
warningSite(
siteKey: string,
workspaceKey: string,
category: string,
message: string,
metadata?: Record<string, unknown>
): void {
if (!this.shouldLog('warning')) {
return;
}
const entry: SiteLogEntry = {
type: 'site',
siteKey,
workspaceKey,
timestamp: this.getTimestamp(),
level: 'warning',
category,
message,
...(metadata && { metadata }),
};
this.writer.write(entry).catch(err => {
console.error('Failed to write site warning log:', err);
});
}
/**
* Log a site-specific error message
*/
errorSite(
siteKey: string,
workspaceKey: string,
category: string,
message: string,
metadata?: Record<string, unknown>
): void {
if (!this.shouldLog('error')) {
return;
}
const entry: SiteLogEntry = {
type: 'site',
siteKey,
workspaceKey,
timestamp: this.getTimestamp(),
level: 'error',
category,
message,
...(metadata && { metadata }),
};
this.writer.write(entry).catch(err => {
console.error('Failed to write site error log:', err);
});
}
/**
* Initialize log cleanup scheduler
*/
initCleanup(retentionDays: number): void {
if (this.cleanupInterval) {
clearInterval(this.cleanupInterval);
}
this.cleanupInterval = this.cleaner.scheduleCleanup(retentionDays);
}
/**
* Shutdown the logger (flush pending writes, stop cleanup)
*/
async shutdown(): Promise<void> {
if (this.cleanupInterval) {
clearInterval(this.cleanupInterval);
this.cleanupInterval = null;
}
await this.writer.forceFlush();
}
/**
* Get the LogWriter instance (for API endpoints)
*/
getWriter(): LogWriter {
return this.writer;
}
}
// Export singleton instance
export const logger = new Logger();
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