Home       Trees       Indices       Help   
Module pyinotify :: Class ProcessEvent
[hide private]
[frames] | no frames]

Class ProcessEvent

source code

Process events objects, can be specialized via subclassing, thus its behavior can be overriden:

Note: you should not override __init__ in your subclass instead define a my_init() method, this method will be called automatically from the constructor of this class with its optionals parameters.

  1. Provide specialized individual methods, e.g. process_IN_DELETE for processing a precise type of event (e.g. IN_DELETE in this case).
  2. Or/and provide methods for processing events by 'family', e.g. process_IN_CLOSE method will process both IN_CLOSE_WRITE and IN_CLOSE_NOWRITE events (if process_IN_CLOSE_WRITE and process_IN_CLOSE_NOWRITE aren't defined though).
  3. Or/and override process_default for catching and processing all the remaining types of events.
Instance Methods [hide private]
 
__init__(self, pevent=None, **kargs)
Enable chaining of ProcessEvent instances.		 source code
 
my_init(self, **kargs)
This method is called from ProcessEvent.__init__().		 source code
bool
__call__(self, event)
To behave like a functor the object must be callable.		 source code
 
nested_pevent(self) source code
 
process_IN_Q_OVERFLOW(self, event)
By default this method only reports warning messages, you can overredide it by subclassing ProcessEvent and implement your own process_IN_Q_OVERFLOW method.		 source code
 
process_default(self, event)
Default processing event method.		 source code

Inherited from _ProcessEvent: __repr__

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Variables [hide private]
  pevent = None
Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

__init__(self, pevent=None, **kargs)
(Constructor)

source code 

Enable chaining of ProcessEvent instances.

Parameters:
  • pevent (callable) - Optional callable object, will be called on event processing (before self).
  • kargs (dict) - This constructor is implemented as a template method delegating its optionals keyworded arguments to the method my_init().
Overrides: object.__init__

my_init(self, **kargs)

source code 

This method is called from ProcessEvent.__init__(). This method is empty here and must be redefined to be useful. In effect, if you need to specifically initialize your subclass' instance then you just have to override this method in your subclass. Then all the keyworded arguments passed to ProcessEvent.__init__() will be transmitted as parameters to this method. Beware you MUST pass keyword arguments though.

Parameters:
  • kargs (dict) - optional delegated arguments from __init__().

__call__(self, event)
(Call operator)

source code 

To behave like a functor the object must be callable. This method is a dispatch method. Its lookup order is:

  1. process_MASKNAME method
  2. process_FAMILY_NAME method
  3. otherwise calls process_default
Parameters:
  • event - Event to be processed.
Returns: bool
By convention when used from the ProcessEvent class:
  • Returning False or None (default value) means keep on executing next chained functors (see chain.py example).
  • Returning True instead means do not execute next processing functions.
Raises:
Overrides: _ProcessEvent.__call__
(inherited documentation)

process_IN_Q_OVERFLOW(self, event)

source code 

By default this method only reports warning messages, you can overredide it by subclassing ProcessEvent and implement your own process_IN_Q_OVERFLOW method. The actions you can take on receiving this event is either to update the variable max_queued_events in order to handle more simultaneous events or to modify your code in order to accomplish a better filtering diminishing the number of raised events. Because this method is defined, IN_Q_OVERFLOW will never get transmitted as arguments to process_default calls.

Parameters:
  • event (dict) - IN_Q_OVERFLOW event.

process_default(self, event)

source code 

Default processing event method. By default does nothing. Subclass ProcessEvent and redefine this method in order to modify its behavior.

Parameters:
  • event (Event instance) - Event to be processed. Can be of any type of events but IN_Q_OVERFLOW events (see method process_IN_Q_OVERFLOW).

   Home       Trees       Indices       Help   
Generated by Epydoc 3.0.1 on Wed Sep 15 21:46:49 2010 http://epydoc.sourceforge.net