66 lines
2.6 KiB
Python
66 lines
2.6 KiB
Python
"""Email backend that writes messages to a file."""
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import datetime
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import os
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from django.conf import settings
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from django.core.exceptions import ImproperlyConfigured
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from django.core.mail.backends.console import EmailBackend as ConsoleEmailBackend
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from django.utils import six
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class EmailBackend(ConsoleEmailBackend):
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def __init__(self, *args, **kwargs):
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self._fname = None
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if 'file_path' in kwargs:
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self.file_path = kwargs.pop('file_path')
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else:
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self.file_path = getattr(settings, 'EMAIL_FILE_PATH', None)
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# Make sure self.file_path is a string.
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if not isinstance(self.file_path, six.string_types):
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raise ImproperlyConfigured('Path for saving emails is invalid: %r' % self.file_path)
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self.file_path = os.path.abspath(self.file_path)
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# Make sure that self.file_path is an directory if it exists.
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if os.path.exists(self.file_path) and not os.path.isdir(self.file_path):
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raise ImproperlyConfigured('Path for saving email messages exists, but is not a directory: %s' % self.file_path)
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# Try to create it, if it not exists.
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elif not os.path.exists(self.file_path):
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try:
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os.makedirs(self.file_path)
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except OSError as err:
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raise ImproperlyConfigured('Could not create directory for saving email messages: %s (%s)' % (self.file_path, err))
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# Make sure that self.file_path is writable.
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if not os.access(self.file_path, os.W_OK):
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raise ImproperlyConfigured('Could not write to directory: %s' % self.file_path)
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# Finally, call super().
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# Since we're using the console-based backend as a base,
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# force the stream to be None, so we don't default to stdout
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kwargs['stream'] = None
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super(EmailBackend, self).__init__(*args, **kwargs)
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def write_message(self, message):
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self.stream.write(message.message().as_bytes() + b'\n')
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self.stream.write(b'-' * 79)
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self.stream.write(b'\n')
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def _get_filename(self):
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"""Return a unique file name."""
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if self._fname is None:
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timestamp = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
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fname = "%s-%s.log" % (timestamp, abs(id(self)))
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self._fname = os.path.join(self.file_path, fname)
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return self._fname
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def open(self):
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if self.stream is None:
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self.stream = open(self._get_filename(), 'ab')
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return True
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return False
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def close(self):
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try:
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if self.stream is not None:
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self.stream.close()
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finally:
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self.stream = None
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