According to their documentation (http://deepstream.io/docs/deepstream.html) it says I can change the default logger to my own:
server.set( 'Logger', new FileLogger() );
(Btw, Logger should be logger. When using Logger it throws Error: Unknown option "Logger"
). However, I want to use Bunyan as the default logger and I've tried these variants:
var logger = bunyan.createLogger({
name: "backend",
streams: streams,
serializers: {
row: function (row) {
if (row) {
return row;
}
return null;
},
filename: function (filename) {
if (filename) {
return require("path").basename(filename);
}
return null;
}
}
});
server.set('logger', new logger.info());
server.set('logger', logger.info.bind(console));
server.set('logger', logger.info.bind(logger));
server.set('logger', logger);
server.set('logger', logger.info);
The errors I keep getting is:
TypeError: this._options.logger.log is not a function
at DependencyInitialiser._onReady (node_modules/deepstream.io/src/utils/dependency-initialiser.js:53:23)
at new DependencyInitialiser (node_modules/deepstream.io/src/utils/dependency-initialiser.js:25:8)
at Deepstream.start (node_modules/deepstream.io/src/deepstream.io.js:121:17)
at Server.<anonymous> (bin/run.js:139:18)
at Server.g (events.js:260:16)
at emitNone (events.js:72:20)
at Server.emit (events.js:166:7)
at emitListeningNT (net.js:1260:10)
at doNTCallback1 (node.js:428:9)
at process._tickDomainCallback (node.js:391:17)
Deepstream expects its logger to implement two methods:
/**
* Logs a line
*
* @param {Number} logLevel One of the C.LOG_LEVEL constants
* @param {String} event One of the C.EVENT constants
* @param {String} logMessage Any string
*
* @public
* @returns {void}
*/
Logger.prototype.log = function( logLevel, event, logMessage ) {};
/**
* Sets the log-level. This can be called at runtime.
*
* @param {Number} logLevel One of the C.LOG_LEVEL constants
*
* @public
* @returns {void}
*/
Logger.prototype.setLogLevel = function( logLevel ) {};
With this, it should be reasonably straightforward to write an adapter for Bunyan. Please also have a look at deepstream's std-out-logger as a reference:
https://github.com/hoxton-one/deepstream.io/blob/master/src/default-plugins/std-out-logger.js