logger

​
Simple logger for debugging purposes
Note: "methods" in this module are actually "static" functions - see hs.logger.new()
API Overview
Variables - Configurable values
​defaultLogLevel​
Functions - API calls offered directly by the extension
​history​
​historySize​
​new​
​printHistory​
​setGlobalLogLevel​
​setModulesLogLevel​
Fields - Variables which can only be accessed from an object returned by a constructor
​level​
Methods - API calls which can only be made on an object returned by a constructor
​d​
​df​
​e​
​ef​
​f​
​getLogLevel​
​i​
​setLogLevel​
​v​
​vf​
​w​
​wf​
API Documentation
Variables
​defaultLogLevel​
Signature
hs.logger.defaultLogLevel
Type
Variable
Description
Default log level for new logger instances.
Functions
​history​
Signature
hs.logger.history() -> list of log entries
Type
Function
Description
Returns the global log history
Parameters
None
Returns
a list of (at most hs.logger.historySize()) log entries produced by all the logger instances, in chronological order; each entry is a table with the following fields:
time - timestamp in seconds since the epoch
level - a number between 1 (error) and 5 (verbose)
id - a string containing the id of the logger instance that produced this entry
message - a string containing the logged message
​historySize​
Signature
hs.logger.historySize([size]) -> number
Type
Function
Description
Sets or gets the global log history size
Parameters
size - (optional) the desired number of log entries to keep in the history; if omitted, will return the current size; the starting value is 0 (disabled)
Returns
the current or new history size
Notes
if you change history size (other than from 0) after creating any logger instances, things will likely break
​new​
Signature
hs.logger.new(id, loglevel) -> logger
Type
Function
Description
Creates a new logger instance
Parameters
id - a string identifier for the instance (usually the module name)
loglevel - (optional) can be 'nothing', 'error', 'warning', 'info', 'debug', or 'verbose', or a corresponding number between 0 and 5; uses hs.logger.defaultLogLevel if omitted
Returns
the new logger instance
Notes
the logger instance created by this method is not a regular object, but a plain table with "static" functions; therefore, do not use the colon syntax for so-called "methods" in this module (as in mylogger:setLogLevel(3)); you must instead use the regular dot syntax: mylogger.setLogLevel(3)
​printHistory​
Signature
hs.logger.printHistory([entries[, level[, filter[, caseSensitive]]]])
Type
Function
Description
Prints the global log history to the console
Parameters
entries - (optional) the maximum number of entries to print; if omitted, all entries in the history will be printed
level - (optional) the desired log level (see hs.logger:setLogLevel()); if omitted, defaults to verbose
filter - (optional) a string to filter the entries (by logger id or message) via string.find plain matching
caseSensitive - (optional) if true, filtering is case sensitive
Returns
None
​setGlobalLogLevel​
Signature
hs.logger.setGlobalLogLevel(lvl)
Type
Function
Description
Sets the log level for all logger instances (including objects' loggers)
Parameters
lvl
Returns
None
​setModulesLogLevel​
Signature
hs.logger.setModulesLogLevel(lvl)
Type
Function
Description
Sets the log level for all currently loaded modules
Parameters
lvl
Returns
None
Notes
This function only affects module-level loggers, object instances with their own loggers (e.g. windowfilters) won't be affected; you can use hs.logger.setGlobalLogLevel() for those
Fields
​level​
Signature
hs.logger.level
Type
Field
Description
The log level of the logger instance, as a number between 0 and 5
Methods
​d​
Signature
hs.logger:d(...)
Type
Method
Description
Logs debug info to the console
Parameters
... - one or more message strings
Returns
None
​df​
Signature
hs.logger:df(fmt,...)
Type
Method
Description
Logs formatted debug info to the console
Parameters
fmt - formatting string as per string.format
... - arguments to fmt
Returns
None
​e​
Signature
hs.logger:e(...)
Type
Method
Description
Logs an error to the console
Parameters
... - one or more message strings
Returns
None
​ef​
Signature
hs.logger:ef(fmt,...)
Type
Method
Description
Logs a formatted error to the console
Parameters
fmt - formatting string as per string.format
... - arguments to fmt
Returns
None
​f​
Signature
hs.logger:f(fmt,...)
Type
Method
Description
Logs formatted info to the console
Parameters
fmt - formatting string as per string.format
... - arguments to fmt
Returns
None
​getLogLevel​
Signature
hs.logger:getLogLevel() -> number
Type
Method
Description
Gets the log level of the logger instance
Parameters
None
Returns
The log level of this logger as a number between 0 and 5
​i​
Signature
hs.logger:i(...)
Type
Method
Description
Logs info to the console
Parameters
... - one or more message strings
Returns
None
​setLogLevel​
Signature
hs.logger:setLogLevel(loglevel)
Type
Method
Description
Sets the log level of the logger instance
Parameters
loglevel - can be 'nothing', 'error', 'warning', 'info', 'debug', or 'verbose'; or a corresponding number between 0 and 5
Returns
None
​v​
Signature
hs.logger:v(...)
Type
Method
Description
Logs verbose info to the console
Parameters
... - one or more message strings
Returns
None
​vf​
Signature
hs.logger:vf(fmt,...)
Type
Method
Description
Logs formatted verbose info to the console
Parameters
fmt - formatting string as per string.format
... - arguments to fmt
Returns
None
​w​
Signature
hs.logger:w(...)
Type
Method
Description
Logs a warning to the console
Parameters
... - one or more message strings
Returns
None
​wf​
Signature
hs.logger:wf(fmt,...)
Type
Method
Description
Logs a formatted warning to the console
Parameters
fmt - formatting string as per string.format
... - arguments to fmt
Returns
None