docs » hs.logger


Simple logger for debugging purposes

Note: "methods" in this module are actually "static" functions - see hs.logger.new()

API Overview

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

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