
Log provides a simple, but standardized mechanism for logging. See docLang::Logging for details.
Slots
- addHandler
-
static Void addHandler(|LogRecord| handler)
Install a handler to receive callbacks on logging events. If the handler func is not immutable, then throw NotImmutableErr.
- debug
-
Void debug(Str message, Err err := def)
Generate a
LogLevel.debug
log entry. - error
-
Void error(Str message, Err err := def)
Generate a
LogLevel.error
log entry. - find
-
static Log find(Str name, Bool checked := def)
Find a log by name. If the log doesn't exist and checked is false then return null, otherwise throw Err.
- get
-
Find an existing log by name or if not found then create a new Log instance with the given name. Name must be valid according to
Uri.isName
otherwise NameErr is thrown. - handlers
-
static |LogRecord|[] handlers()
List all the handler functions installed to process log events.
- info
-
Void info(Str message, Err err := def)
Generate a
LogLevel.info
log entry. - isDebug
-
Bool isDebug()
Return if debug level is enabled.
- isEnabled
-
Bool isEnabled(LogLevel level)
Return if this log is enabled for the specified level.
- isError
-
Bool isError()
Return if error level is enabled.
- isInfo
-
Bool isInfo()
Return if info level is enabled.
- isWarn
-
Bool isWarn()
Return if warn level is enabled.
- level
-
LogLevel level()
The log level field defines which log entries are reported versus ignored. Anything which equals or is more severe than the log level is logged. Anything less severe is ignored. If the level is set to silent, then logging is disabled.
- list
-
static Log[] list()
Return a list of all the active logs which have been created since system startup.
- log
-
virtual Void log(LogRecord rec)
Publish a log entry. The convenience methods error, warn info, and debug all route to this method for centralized handling. The standard implementation is to call each of the installed handlers if the specified level is enabled.
- make
-
new make(Str name)
Create a new log by name. If a log has already been created for the specified name then throw ArgErr. Name must be valid according to
Uri.isName
otherwise NameErr is thrown. - name
-
Str name()
Return name of the log.
- removeHandler
-
static Void removeHandler(|LogRecord| handler)
Uninstall a log handler.
- setLevel
-
Set the log level severity.
- toStr
-
override Str toStr()
Return name.
- warn
-
Void warn(Str message, Err err := def)
Generate a
LogLevel.warn
log entry.