def _serve_image_error(self, error, error_code=200):
"""
Serves an error image.
@param error: Can be a String, Twisted Failure object, or errors.* object.
@param error_code: HTTP Return code. Defaults to 500, internal server error.
@type error_code: Integer
"""
@stack
def store_error_image(data):
if self.size in display_sizes and aztk_config.is_production():
self.log.debug("Storing error image for size: %s" % self.size)
self.error_images[self.size] = data
return data
if self.size in self.error_images.keys() and aztk_config.is_production():
d = Deferred()
self.log.debug("serving cached error image for size: %s" % self.size)
d.callback(self.error_images[self.size])
else:
if self.size in display_sizes:
crop = display_sizes[self.size]['fit_size']
width = display_sizes[self.size]['width']
height = display_sizes[self.size]['height']
elif self.size == CUSTOM:
width = self.width
height = self.height
crop = self.crop
else:
width = 500
height = 500
crop = False
quality = 80
if not aztk_config.is_production():
d = manip.annotate(self.failure_image, 20, 20, '[%s]\n%s' % (self.app.host, str(error)))
else:
d = Deferred()
d.callback(self.failure_image)
if crop:
d.addCallback(manip.resize_crop, width, height, quality)
else:
d.addCallback(manip.resize_no_crop, width, height, quality)
d.addCallback(store_error_image)
self.log.warning('Error Serving Image[%s]: %s' % (self.media_id, str(error)))
d.addCallback(self._serve_image_content, error_code, cache=False)
return d
def store_error_image(data):
if self.size in display_sizes and aztk_config.is_production():
self.log.debug("Storing error image for size: %s" % self.size)
self.error_images[self.size] = data
return data