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log4js-db-mongodb

library0.2.5jsnpmunverified

A MongoDB appender for log4js-node that allows logging events directly to a MongoDB collection. Current stable version is 0.2.5, with semver indicating early development. It wraps the MongoDB Node.js driver and integrates with log4js's configuration system. Key differentiator: a dedicated MongoDB appender for log4js, supporting filtered logging levels and custom layouts. Released under ISC license.

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npm install log4js-db-mongodb

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INSTALL

IMPORT

SIG · LOG4JS-DB-MONGODB

log4js-db-mongodb

devopsjavascriptv0.2.5

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

log4js-db-mongodb

✓ import { configure } from 'log4js'; // then use type: 'log4js-db-mongodb' in config

✗ const log4jsDbMongo = require('log4js-db-mongodb');

This package provides a log4js appender, not a direct import. It must be loaded by log4js via the type string in appender configuration.

Configures log4js with a MongoDB appender to log events to a remote database, including an example logger call.

import { configure, getLogger } from 'log4js'; configure({ appenders: { mongo: { type: 'log4js-db-mongodb', mongoSetting: { url: process.env.MONGO_URL ?? 'mongodb://localhost:27017', options: { useNewUrlParser: true, useUnifiedTopology: true }, database: 'logs', collection: 'log_entries', }, layout: { type: 'basic' }, }, }, categories: { default: { appenders: ['mongo'], level: 'INFO' } }, }); const logger = getLogger(); logger.info('App started');

Debug

Known issues

gotchaThe package version 0.2.5 still uses deprecated MongoDB connection options (useNewUrlParser, useUnifiedTopology) which are ignored in newer MongoDB driver versions.

fix

Remove useNewUrlParser and useUnifiedTopology options; they are ignored in MongoDB driver 4.0+.

affects: >=0.0.0

gotchaIn the example, the appender type is incorrectly named 'restAppender' in the appenders array, but configured as 'dbAppender'. This causes a configuration error.

fix

Ensure the appender name in categories matches the key used in appenders configuration.

affects: >=0.0.0

Errors

Common errors & fixes

Error: No appender 'dbAppender' found

Mismatch between appender name in categories and actual appender key.

fix

Use consistent naming: if you define appenders: { mongo: ... }, then categories should reference 'mongo'.

MongoParseError: options useNewUrlParser, useUnifiedTopology are not supported

Using outdated MongoDB connection options that are now ignored but may cause warnings.

fix

Remove useNewUrlParser and useUnifiedTopology from mongoSetting.options.

Upgrade

Version history

0.2.5latest on npm

Audit

Dependencies

log4jsrequiredlog4js-db-mongodb is an appender for log4js, so log4js is required to configure and use loggers.

mongodbrequiredUsed to connect to MongoDB and insert log documents.

Agent activity

10 hits · last 30 days

node

Resources

packagelog4js-db-mongodb ↗

homepagehttps://log4js-node.github.io/log4js-node/ ↗