Function createChildLogger

lib/logger-factory.js:22–34

* Utility for creating a child logger with the appropriate bindings, logger factory * and validation. * @param {object} context * @param {import('../fastify').FastifyBaseLogger} logger * @param {import('../fastify').RawRequestDefaultExpression } req * @param {string} reqId * @param {import

(context, logger, req, reqId, loggerOpts)

 * with child bindings added.
 */
function createChildLogger (context, logger, req, reqId, loggerOpts) {
  const loggerBindings = {
    [context.requestIdLogLabel]: reqId
  }
  const child = context.childLoggerFactory.call(context.server, logger, loggerBindings, loggerOpts || {}, req)

  // Optimization: bypass validation if the factory is our own default factory
  if (context.childLoggerFactory !== defaultChildLoggerFactory) {
    validateLogger(child, true) // throw if the child is not a valid logger
  }

  return child
}

/** Default factory to create child logger instance
 *