forked from platypush/platypush
74 lines
2.1 KiB
Python
74 lines
2.1 KiB
Python
import sys
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from ..hook import EventHook
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from platypush.config import Config
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from platypush.context import get_backend
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from platypush.message.event import Event
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class EventProcessor(object):
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""" Event processor class. Checks an event against the configured
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rules and executes any matching event hooks """
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def __init__(self, hooks=None):
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"""
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Params:
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hooks -- List of event hooks (default: any entry in the config
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named as event.hook.<hook_name> """
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if hooks is None:
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hooks = Config.get_event_hooks()
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self.hooks = []
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for (name, hook) in hooks.items():
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h = EventHook.build(name=name, hook=hook)
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self.hooks.append(h)
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@staticmethod
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def notify_web_clients(event):
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backends = Config.get_backends()
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if 'http' not in backends:
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return
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backend = get_backend('http')
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if backend:
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backend.notify_web_clients(event)
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backend = get_backend('websocket')
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if backend:
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backend.notify_web_clients(event)
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def process_event(self, event: Event):
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""" Processes an event and runs the matched hooks with the highest score """
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if not event.disable_web_clients_notification:
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self.notify_web_clients(event)
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matched_hooks = set()
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priority_hooks = set()
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max_score = -sys.maxsize
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max_priority = 0
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for hook in self.hooks:
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match = hook.matches_event(event)
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if match.is_match:
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if match.score > max_score:
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matched_hooks = {hook}
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max_score = match.score
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elif match.score == max_score:
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matched_hooks.add(hook)
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if hook.priority > max_priority:
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priority_hooks = {hook}
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max_priority = hook.priority
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elif hook.priority == max_priority:
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priority_hooks.add(hook)
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matched_hooks.update(priority_hooks)
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for hook in matched_hooks:
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hook.run(event)
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# vim:sw=4:ts=4:et:
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