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43 lines
1.2 KiB
43 lines
1.2 KiB
from datetime import datetime
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from cronsim import CronSim
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from django.core.exceptions import ValidationError
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from urllib.parse import urlparse
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from pytz import all_timezones
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class WebhookValidator(object):
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message = "Enter a valid URL."
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def __call__(self, value):
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parsed = urlparse(value)
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if parsed.scheme not in ("http", "https"):
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raise ValidationError(message=self.message)
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if parsed.hostname in ("127.0.0.1", "localhost"):
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raise ValidationError(message=self.message)
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class CronExpressionValidator(object):
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message = "Not a valid cron expression."
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def __call__(self, value):
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# Expect 5 components-
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if len(value.split()) != 5:
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raise ValidationError(message=self.message)
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try:
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# Does cronsim accept the schedule?
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it = CronSim(value, datetime(2000, 1, 1))
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# Can it calculate the next datetime?
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next(it)
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except:
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raise ValidationError(message=self.message)
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class TimezoneValidator(object):
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message = "Not a valid time zone."
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def __call__(self, value):
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if value not in all_timezones:
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raise ValidationError(message=self.message)
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