The "payload" of a log message.

Use

Record structures are passed as parameters to the log method of the Log trait. Logger implementors manipulate these structures in order to display log messages. Records are automatically created by the log! macro and so are not seen by log users.

Note that the level() and target() accessors are equivalent to self.metadata().level() and self.metadata().target() respectively. These methods are provided as a convenience for users of this structure.

Example

The following example shows a simple logger that displays the level, module path, and message of any Record that is passed to it.

struct SimpleLogger;

impl log::Log for SimpleLogger {
   fn enabled(&self, metadata: &log::Metadata) -> bool {
       true
   }

   fn log(&self, record: &log::Record) {
       if !self.enabled(record.metadata()) {
           return;
       }

       println!("{}:{} -- {}",
                record.level(),
                record.target(),
                record.args());
   }
   fn flush(&self) {}
}