npm install --save lenjador
Preprocessors allow modification of log messages, prior to sending of the message to the configured logger(s).
Masks all the fields except those whitelisted in the configuration using JSON Pointer.
Only simple values(string
, number
, boolean
) can be whitelisted. Whitelisting array and hash elements can be done using
wildcard symbol ~
.
preprocessors:
whitelist:
pointers: ['/info/phone', '/addresses/~/host']
logger = Lenjador.build(application_name, logger_config, preprocessors)
input = {password: 'password', info: {phone: '+12055555555'}, addresses: [{host: 'example.com', path: 'info'}]}
logger.debug("Received request", input)
Logger output:
Received request {"password": "********", "info":{"phone":"+12055555555"}, "addresses": [{"host": "example.com","path": "****"}]}