67 lines
2.3 KiB
Python
67 lines
2.3 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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class EmailBackend(ConsoleEmailBackend):
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def __init__(self, *args, file_path=None, **kwargs):
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self._fname = None
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if file_path is not None:
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self.file_path = file_path
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else:
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self.file_path = getattr(settings, "EMAIL_FILE_PATH", None)
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self.file_path = os.path.abspath(self.file_path)
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try:
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os.makedirs(self.file_path, exist_ok=True)
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except FileExistsError:
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raise ImproperlyConfigured(
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"Path for saving email messages exists, but is not a directory: %s"
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% self.file_path
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)
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except OSError as err:
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raise ImproperlyConfigured(
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"Could not create directory for saving email messages: %s (%s)"
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% (self.file_path, err)
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)
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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(
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"Could not write to directory: %s" % self.file_path
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)
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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().__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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