web/lib/django/core/mail/backends/filebased.py
changeset 29 cc9b7e14412b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/core/mail/backends/filebased.py	Tue May 25 02:43:45 2010 +0200
@@ -0,0 +1,59 @@
+"""Email backend that writes messages to a file."""
+
+import datetime
+import os
+
+from django.conf import settings
+from django.core.exceptions import ImproperlyConfigured
+from django.core.mail.backends.console import EmailBackend as ConsoleEmailBackend
+
+class EmailBackend(ConsoleEmailBackend):
+    def __init__(self, *args, **kwargs):
+        self._fname = None
+        if 'file_path' in kwargs:
+            self.file_path = kwargs.pop('file_path')
+        else:
+            self.file_path = getattr(settings, 'EMAIL_FILE_PATH',None)
+        # Make sure self.file_path is a string.
+        if not isinstance(self.file_path, basestring):
+            raise ImproperlyConfigured('Path for saving emails is invalid: %r' % self.file_path)
+        self.file_path = os.path.abspath(self.file_path)
+        # Make sure that self.file_path is an directory if it exists.
+        if os.path.exists(self.file_path) and not os.path.isdir(self.file_path):
+            raise ImproperlyConfigured('Path for saving email messages exists, but is not a directory: %s' % self.file_path)
+        # Try to create it, if it not exists.
+        elif not os.path.exists(self.file_path):
+            try:
+                os.makedirs(self.file_path)
+            except OSError, err:
+                raise ImproperlyConfigured('Could not create directory for saving email messages: %s (%s)' % (self.file_path, err))
+        # Make sure that self.file_path is writable.
+        if not os.access(self.file_path, os.W_OK):
+            raise ImproperlyConfigured('Could not write to directory: %s' % self.file_path)
+        # Finally, call super().
+        # Since we're using the console-based backend as a base,
+        # force the stream to be None, so we don't default to stdout
+        kwargs['stream'] = None
+        super(EmailBackend, self).__init__(*args, **kwargs)
+
+    def _get_filename(self):
+        """Return a unique file name."""
+        if self._fname is None:
+            timestamp = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
+            fname = "%s-%s.log" % (timestamp, abs(id(self)))
+            self._fname = os.path.join(self.file_path, fname)
+        return self._fname
+
+    def open(self):
+        if self.stream is None:
+            self.stream = open(self._get_filename(), 'a')
+            return True
+        return False
+
+    def close(self):
+        try:
+            if self.stream is not None:
+                self.stream.close()
+        finally:
+            self.stream = None
+