def handle( self, handler ):
'''
'''
content = None
splitted_request = handler.request.uri.split('/')
query = '/'.join(splitted_request[2:])[1:]
if splitted_request[1] == 'metainfo':
# content = self._core.get_meta_info(path)
content = 'metainfo'
content_type = 'text/html'
#image data request
elif splitted_request[1] == 'data':
try:
parser = RequestParser()
args = parser.parse(splitted_request[2:])
#Call the cutout method
volume = self._core.get(*args)
#Check if we got nothing in the case of a request outside the data with fit=True
if volume.size == 0:
raise IndexError('Tile index out of bounds')
#Color mode is equivalent to segmentation color request right now
color = parser.optional_queries['segcolor'] and parser.optional_queries['segmentation']
# color = True
#Accepted image output formats
image_formats = settings.SUPPORTED_IMAGE_FORMATS
#Process output
out_dtype = np.uint8
output_format = parser.output_format
if output_format == 'zip' and not color:
#Rotate out of numpy array
volume = volume.transpose(1, 0, 2)
zipped_data = zlib.compress(volume.astype(out_dtype).tostring('F'))
output = StringIO.StringIO()
output.write(zipped_data)
content = output.getvalue()
content_type = 'application/octet-stream'
elif output_format in image_formats:
if color:
volume = volume[:,:,:,[2,1,0]]
content = cv2.imencode('.' + output_format, volume[:,:,0,:].astype(out_dtype))[1].tostring()
else:
content = cv2.imencode('.' + output_format, volume[:,:,0].astype(out_dtype))[1].tostring()
content_type = 'image/' + output_format
else:
content = 'Error 400: Bad request<br>Output file format not supported'
content_type = 'text/html'
#Show some basic statistics
print 'Total volume shape:', volume.shape
except (KeyError, ValueError):
print 'Missing query'
content = 'Error 400: Bad request<br>Missing query'
content_type = 'text/html'
except IndexError:
traceback.print_exc(file=sys.stdout)
print 'Could not load image'
content = 'Error 400: Bad request<br>Could not load image'
content_type = 'text/html'
# except Exception:
# traceback.print_exc(file=sys.stdout)
# invalid request
if not content:
content = 'Error 404: Not found'
content_type = 'text/html'
# handler.set_header('Cache-Control','no-cache, no-store, must-revalidate')
# handler.set_header('Pragma','no-cache')
# handler.set_header('Expires','0')
handler.set_header('Access-Control-Allow-Origin', '*')
handler.set_header('Content-Type', content_type)
#Temporary check for img output
handler.write(content)
