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Viewing / Editing File: icontact.py

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import time

from peewee import CharField, IntegerField, CompositeKey

from defence360agent.contracts.config import IContactMessageType
from defence360agent.model import Model, instance
from defence360agent.utils.common import DAY, WEEK

THROTTLING_PERIOD = {
    IContactMessageType.MALWARE_FOUND: DAY,
    IContactMessageType.SCAN_NOT_SCHEDULED: WEEK,
}


class IContactThrottle(Model):
    class Meta:
        database = instance.db
        db_table = "icontact_throttle"
        primary_key = CompositeKey("message_type", "user")

    message_type = CharField()
    user = CharField(null=True)
    #: The last time we sent a notification about :attr:`message_type`
    timestamp = IntegerField(default=0)

    @classmethod
    def may_be_notified(cls, message_type, period_limit, user=None):
        obj, _ = cls.get_or_create(message_type=message_type, user=user)
        return (time.time() - obj.timestamp) > period_limit

    @classmethod
    def refresh(cls, message_type, user=None):
        cls.update(timestamp=time.time()).where(
            cls.message_type == message_type,
            cls.user.is_null(True) if user is None else cls.user == user,
        ).execute()

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