NullLogger

Constructors

this

this(LogLevel lv)

The default constructor for the NullLogger.

Inherited Members

From Logger

LogEntry

struct LogEntry

LogEntry is a aggregation combining all information associated with a log message. This aggregation will be passed to the method writeLogMsg.

writeLogMsg

void writeLogMsg(LogEntry payload)

A custom logger must implement this method in order to work in a MultiLogger and ArrayLogger.

logMsgPart

void logMsgPart(const(char)[] msg)

Logs a part of the log message.

finishLogMsg

void finishLogMsg()

Signals that the message has been written and no more calls to logMsgPart follow.

logLevel

LogLevel logLevel [@property getter]

LogLevel logLevel [@property setter]

The LogLevel determines if the log call are processed or dropped by the Logger. In order for the log call to be processed the LogLevel of the log call must be greater or equal to the LogLevel of the logger.

fatalHandler

void delegate() fatalHandler [@property getter]

void delegate() @(safe) fatalHandler [@property setter]

This delegate is called in case a log message with LogLevel.fatal gets logged.

forwardMsg

void forwardMsg(LogEntry payload)

This method allows forwarding log entries from one logger to another.

memLogFunctions

template memLogFunctions(LogLevel ll)

trace

alias trace = memLogFunctions!(LogLevel.trace).logImpl

tracef

alias tracef = memLogFunctions!(LogLevel.trace).logImplf

info

alias info = memLogFunctions!(LogLevel.info).logImpl

infof

alias infof = memLogFunctions!(LogLevel.info).logImplf

warning

alias warning = memLogFunctions!(LogLevel.warning).logImpl

warningf

alias warningf = memLogFunctions!(LogLevel.warning).logImplf

error

alias error = memLogFunctions!(LogLevel.error).logImpl

errorf

alias errorf = memLogFunctions!(LogLevel.error).logImplf

critical

alias critical = memLogFunctions!(LogLevel.critical).logImpl

criticalf

alias criticalf = memLogFunctions!(LogLevel.critical).logImplf

fatal

alias fatal = memLogFunctions!(LogLevel.fatal).logImpl

fatalf

alias fatalf = memLogFunctions!(LogLevel.fatal).logImplf

This template provides the log functions for the Logger class with the LogLevel encoded in the function name.

log

void log(LogLevel ll, bool condition, A args)

void log(LogLevel ll, bool condition, T args, int line, string file, string funcName, string prettyFuncName)

This method logs data with the LogLevel of the used Logger.

log

void log(LogLevel ll, A args)

void log(LogLevel ll, T args, int line, string file, string funcName, string prettyFuncName, string moduleName)

This function logs data to the used Logger with a specific LogLevel.

log

void log(bool condition, A args)

void log(bool condition, T args, int line, string file, string funcName, string prettyFuncName, string moduleName)

This function logs data to the used Logger depending on a explicitly passed condition with the LogLevel of the used Logger.

log

void log(A args)

void log(T arg, int line, string file, string funcName, string prettyFuncName, string moduleName)

This function logs data to the used Logger with the LogLevel of the used Logger.

logf

void logf(LogLevel ll, bool condition, string msg, A args)

This function logs data to the used Logger with a specific LogLevel and depending on a condition in a printf-style manner.

logf

void logf(LogLevel ll, string msg, A args)

This function logs data to the used Logger with a specific LogLevel in a printf-style manner.

logf

void logf(bool condition, string msg, A args)

This function logs data to the used Logger depending on a condition with the LogLevel of the used Logger in a printf-style manner.

logf

void logf(string msg, A args)

This method logs data to the used Logger with the LogLevel of the this Logger in a printf-style manner.

import std.logger.core : LogLevel;
auto nl1 = new NullLogger(LogLevel.all);
nl1.info("You will never read this.");
nl1.fatal("You will never read this, either and it will not throw");

• NullLogger