def __call__(self): """ Call an HTTP method of a resource. This method was rewritten to allow for a sync flow which uses one POST request for each transferred document (back and forth). Usual U1DB sync process transfers all documents from client to server and back in only one POST request. This is inconvenient for some reasons, as lack of possibility of gracefully interrupting the sync process, and possible timeouts for when dealing with large documents that have to be retrieved and encrypted/decrypted. Because of those, we split the sync process into many POST requests. """ args = urlparse.parse_qsl(self.environ['QUERY_STRING'], strict_parsing=False) try: args = dict( (k.decode('utf-8'), v.decode('utf-8')) for k, v in args) except ValueError: raise http_app.BadRequest() method = self.environ['REQUEST_METHOD'].lower() if method in ('get', 'delete'): meth = self._lookup(method) return meth(args, None) else: # we expect content-length > 0, reconsider if we move # to support chunked enconding try: content_length = int(self.environ['CONTENT_LENGTH']) except (ValueError, KeyError): # raise http_app.BadRequest content_length = self.max_request_size if content_length <= 0: raise http_app.BadRequest if content_length > self.max_request_size: raise http_app.BadRequest reader = http_app._FencedReader( self.environ['wsgi.input'], content_length, self.max_entry_size) content_type = self.environ.get('CONTENT_TYPE') if content_type == 'application/json': meth = self._lookup(method) body = reader.read_chunk(sys.maxint) return meth(args, body) elif content_type.startswith('application/x-soledad-sync'): # read one line and validate it body_getline = reader.getline if body_getline().strip() != '[': raise http_app.BadRequest() line = body_getline() line, comma = utils.check_and_strip_comma(line.strip()) meth_args = self._lookup('%s_args' % method) meth_args(args, line) # handle incoming documents if content_type == 'application/x-soledad-sync-put': meth_put = self._lookup('%s_put' % method) meth_end = self._lookup('%s_end' % method) while True: entry = body_getline().strip() if entry == ']': # end of incoming document stream break if not entry or not comma: # empty or no prec comma raise http_app.BadRequest entry, comma = utils.check_and_strip_comma(entry) content = body_getline().strip() content, comma = utils.check_and_strip_comma(content) meth_put({'content': content or None}, entry) if comma or body_getline(): # extra comma or data raise http_app.BadRequest return meth_end() # handle outgoing documents elif content_type == 'application/x-soledad-sync-get': meth_get = self._lookup('%s_get' % method) return meth_get() else: raise http_app.BadRequest() else: raise http_app.BadRequest()
def __call__(self): """ Call an HTTP method of a resource. This method was rewritten to allow for a sync flow which uses one POST request for each transferred document (back and forth). Usual U1DB sync process transfers all documents from client to server and back in only one POST request. This is inconvenient for some reasons, as lack of possibility of gracefully interrupting the sync process, and possible timeouts for when dealing with large documents that have to be retrieved and encrypted/decrypted. Because of those, we split the sync process into many POST requests. """ args = urlparse.parse_qsl(self.environ['QUERY_STRING'], strict_parsing=False) try: args = dict( (k.decode('utf-8'), v.decode('utf-8')) for k, v in args) except ValueError: raise http_app.BadRequest() method = self.environ['REQUEST_METHOD'].lower() if method in ('get', 'delete'): meth = self._lookup(method) return meth(args, None) else: # we expect content-length > 0, reconsider if we move # to support chunked enconding try: content_length = int(self.environ['CONTENT_LENGTH']) except (ValueError, KeyError): # raise http_app.BadRequest content_length = self.max_request_size if content_length <= 0: raise http_app.BadRequest if content_length > self.max_request_size: raise http_app.BadRequest reader = http_app._FencedReader(self.environ['wsgi.input'], content_length, self.max_entry_size) content_type = self.environ.get('CONTENT_TYPE') if content_type == 'application/json': meth = self._lookup(method) body = reader.read_chunk(sys.maxint) return meth(args, body) elif content_type.startswith('application/x-soledad-sync'): # read one line and validate it body_getline = reader.getline if body_getline().strip() != '[': raise http_app.BadRequest() line = body_getline() line, comma = utils.check_and_strip_comma(line.strip()) meth_args = self._lookup('%s_args' % method) meth_args(args, line) # handle incoming documents if content_type == 'application/x-soledad-sync-put': meth_put = self._lookup('%s_put' % method) meth_end = self._lookup('%s_end' % method) while True: entry = body_getline().strip() if entry == ']': # end of incoming document stream break if not entry or not comma: # empty or no prec comma raise http_app.BadRequest entry, comma = utils.check_and_strip_comma(entry) content = body_getline().strip() content, comma = utils.check_and_strip_comma(content) meth_put({'content': content or None}, entry) if comma or body_getline(): # extra comma or data raise http_app.BadRequest return meth_end() # handle outgoing documents elif content_type == 'application/x-soledad-sync-get': meth_get = self._lookup('%s_get' % method) return meth_get() else: raise http_app.BadRequest() else: raise http_app.BadRequest()