Crate slog_try

Convenience macros for logging with optional slog Loggers.

Example

#[derive(Default)]
struct HasOptLogger {
    logger: Option<Logger>,
}

let mut opt_logger: HasOptLogger = Default::default();
try_info!(opt_logger.logger, "You won't see me output.  The logger is None."; "opt" => "None");
try_info!(opt_logger.logger, #"imatag", "You won't see me output.  The logger is None."; "opt" => "None");

// Setup a `Logger`
opt_logger.logger = Some(logger);
try_info!(opt_logger.logger, "You will see me output!"; "opt" => "Some");
try_info!(opt_logger.logger, #"imatag", "You will see me output!"; "opt" => "Some");

Macros

crit

Log critical level record

debug

Log debug level record

error

Log error level record

info

Log info level record

trace

Log trace level record

try_crit

Log a crit level message if the given logger is Some,, otherwise do nothing.

try_debug

Log a debug level message if the given logger is Some, otherwise do nothing.

try_error

Log an error level message if the given logger is Some, otherwise do nothing.

try_info

Log an info level message if the given logger is Some, otherwise do nothing.

try_trace

Log a trace level message if the given logger is Some, otherwise do nothing.

try_warn

Log a warn level message if the given logger is Some, otherwise do nothing.

warn

Log warning level record