Implements: ILogger
Description
The NullLogger class provides a dummy logger with no real effect.
Important points
- It can be used in testing or in situations when a logger is required but must be disabled.
Instance methods
debug
Logs high-level debug information for troubleshooting.
void debug(IContext context, String message, Object… args)
- context: IContext - (optional) a context to trace execution through a call chain.
- message: String - a human-readable message to log.
- args: Object - arguments to parameterize the message.
error
Logs recoverable application error.
error(context: Optional[IContext], error: Exception, message: str, *args: Any, **kwargs: Any) void error(IContext context, Exception error, String message, Object… args)
- context: IContext - (optional) a context to trace execution through a call chain.
- error: Exception - an error object associated with this message.
- message: String - a human-readable message to log.
- args: Object - arguments to parameterize the message.
fatal
Logs fatal (unrecoverable) message that caused the process to crash.
fatal(context: Optional[IContext], error: Exception, message: str, *args: Any, **kwargs: Any) void fatal(IContext context, Exception error, String message, Object… args)
- context: IContext - (optional) a context to trace execution through a call chain.
- error: Exception - an error object associated with this message.
- message: String - a human-readable message to log.
- args: Object - arguments to parameterize the message.
getLevel
Gets the maximum log level. Messages with higher log level are filtered out.
LogLevel getLevel()
- returns: LogLevel - the maximum log level.
info
Logs an important information message
info(context: Optional[IContext], message: str, *args: Any, **kwargs: Any) void info(IContext context, String message, Object… args)
- context: IContext - (optional) a context to trace execution through a call chain.
- message: String - a human-readable message to log.
- args: Object - arguments to parameterize the message.
log
Logs a message at specified log level.
void log(LogLevel level, IContext context, Exception error, String message, Object… args)
- level: LogLevel - a log level.
- context: IContext - (optional) a context to trace execution through a call chain.
- error: Exception - an error object associated with this message.
- message: String - a human-readable message to log.
- args: Object - arguments to parameterize the message.
trace
Logs low-level debug information for troubleshooting.
trace(context: Optional[IContext], message: str, *args: Any, **kwargs: Any) void trace(IContext context, String message, Object… args)
- context: IContext - (optional) a context to trace execution through a call chain.
- message: String - a human-readable message to log.
- args: Object - arguments to parameterize the message.
warn
Logs a warning that may or may not have a negative impact.
void warn(IContext context, String message, Object… args)
- context: IContext - (optional) a context to trace execution through a call chain.
- message: String - a human-readable message to log.
- args: Object - arguments to parameterize the message.