@athenna/logger/src/formatters/JsonFormatter.js

The Athenna logging solution. Log in stdout, files and buckets.

/**
 * @athenna/logger
 *
 * (c) João Lenon <lenon@athenna.io>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
import { Is } from '@athenna/common';
import { Formatter } from '#src/formatters/Formatter';
export class JsonFormatter extends Formatter {
    format(message) {
        const base = {
            ...(this.configs.defaults || {}),
            level: this.level(),
            msg: undefined,
            date: new Date().toISOString(),
            timestamp: Date.now(),
            pid: this.pid(),
            hostname: this.hostname(),
            traceId: this.traceId(),
            spanId: this.spanId(),
            ...this.contextBindings()
        };
        if (Is.String(message)) {
            base.msg = message;
            return JSON.stringify(base, this.getCircularReplacer());
        }
        if (Is.Exception(message)) {
            return this.handleExceptionLog(base, message);
        }
        if (Is.Error(message)) {
            return this.handleExceptionLog(base, message.toAthennaException());
        }
        Object.keys(message).forEach(key => {
            base[key] = message[key];
        });
        return JSON.stringify(base, this.getCircularReplacer());
    }
    handleExceptionLog(base, message) {
        return JSON.stringify({
            ...base,
            name: message.name,
            code: message.code,
            msg: message.message,
            help: message.help,
            status: message.status,
            cause: message.cause,
            details: message.details,
            metadata: message.otherInfos,
            stack: message.stack
        }, this.getCircularReplacer());
    }
}