vapor-docs/2.0/docs/vapor/log.md

Log information using drop.log.

drop.log.info("Informational log")

Types

Below are the following methods you can call on the log protocol. Only error and fatal will be shown in production mode.

Method	Production
info	No
warning	No
verbose	No
debug	No
error	Yes
fatal	Yes

Protocol

Create your own logger by conforming to LogProtocol.

/// Logger protocol. Custom loggers must conform
/// to this protocol
public protocol LogProtocol: class {
    /// Enabled log levels. Only levels in this
    /// array should be logged.
    var enabled: [LogLevel] { get set }

    /// Log the given message at the passed filter level.
    /// file, function and line of the logging call
    /// are automatically injected in the convenience function.
    func log(_ level: LogLevel, message: String, file: String, function: String, line: Int)
}