const log4js = require('koa-log4')

const log = log4js.getLogger('index')
log.info('index do some awesome things')

const log4js = require('koa-log4')
app.use(log4js.koaLogger(log4js.getLogger("http"), { level: 'auto' }))

const log4js = require("koa-log4")
app.use(log4js.koaLogger(
    // the logger to log to
    log4js.getLogger("http"),
    // the options object
    {
        // select the level all access logs will be set to, or use "auto" to choose depending on the status code (see next option)
        level: "auto",
        // if `level` is set to "auto" the default rule will map 200-299 to INFO, 300-399 to WARN and 400-599 to ERROR.
        // you can override this behavior by setting your own custom levelMapper.
        // (the example is the default implementation, do not copy unless you want to modify it)
        levelMapper: function(statusCode) {
            if (statusCode >= 400)
                return levels.ERROR
            if (statusCode >= 300)
                return levels.WARN
            return levels.INFO
        }
    }
))