Function mkLogEmitter

lib/bunyan.js:1010–1050

* Build a log emitter function for level minLevel. I.e. this is the * creator of `log.info`, `log.error`, etc.

(minLevel)

 * creator of `log.info`, `log.error`, etc.
 */
function mkLogEmitter(minLevel) {
    return function () {
        var log = this;
        var str = null;
        var rec = null;

        if (!this._emit) {
            /*
             * Show this invalid Bunyan usage warning *once*.
             *
             * See <https://github.com/trentm/node-bunyan/issues/100> for
             * an example of how this can happen.
             */
            var dedupKey = 'unbound';
            if (!_haveWarned[dedupKey]) {
                var caller = getCaller3Info();
                _warn(format('bunyan usage error: %s:%s: attempt to log '
                    + 'with an unbound log method: `this` is: %s',
                    caller.file, caller.line, util.inspect(this)),
                    dedupKey);
            }
            return;
        } else if (arguments.length === 0) {   // `log.<level>()`
            return (this._level <= minLevel);
        }

        var msgArgs = new Array(arguments.length);
        for (var i = 0; i < msgArgs.length; ++i) {
            msgArgs[i] = arguments[i];
        }

        if (this._level <= minLevel) {
            rec = mkRecord(log, minLevel, msgArgs);
            str = this._emit(rec);
        }

        if (probes) {
            probes[minLevel].fire(mkProbeArgs, str, log, minLevel, msgArgs);
        }
    }
}


/**