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comparison idavoll/backend.py @ 196:00a6dbfbee42

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Return deferreds on failure, instead of raising exceptions.
author Ralph Meijer <ralphm@ik.nu>
date Tue, 10 Jun 2008 08:28:57 +0000
parents c21b986cff30
children e404775b12df
comparison
equal deleted inserted replaced
195:e289636ccc4f 196:00a6dbfbee42
246 d.addCallback(self._make_config) 246 d.addCallback(self._make_config)
247 return d 247 return d
248 248
249 def get_node_configuration(self, node_id): 249 def get_node_configuration(self, node_id):
250 if not node_id: 250 if not node_id:
251 raise error.NoRootNode() 251 return defer.fail(error.NoRootNode())
252 252
253 d = self.storage.get_node(node_id) 253 d = self.storage.get_node(node_id)
254 d.addCallback(lambda node: node.get_configuration()) 254 d.addCallback(lambda node: node.get_configuration())
255 255
256 d.addCallback(self._make_config) 256 d.addCallback(self._make_config)
267 267
268 return options 268 return options
269 269
270 def set_node_configuration(self, node_id, options, requestor): 270 def set_node_configuration(self, node_id, options, requestor):
271 if not node_id: 271 if not node_id:
272 raise error.NoRootNode() 272 return defer.fail(error.NoRootNode())
273 273
274 for key, value in options.iteritems(): 274 for key, value in options.iteritems():
275 if not self.options.has_key(key): 275 if not self.options.has_key(key):
276 raise error.InvalidConfigurationOption() 276 return defer.fail(error.InvalidConfigurationOption())
277 if self.options[key]["type"] == 'boolean': 277 if self.options[key]["type"] == 'boolean':
278 try: 278 try:
279 options[key] = bool(int(value)) 279 options[key] = bool(int(value))
280 except ValueError: 280 except ValueError:
281 raise error.InvalidConfigurationValue() 281 return defer.fail(error.InvalidConfigurationValue())
282 282
283 d = self.storage.get_node(node_id) 283 d = self.storage.get_node(node_id)
284 d.addCallback(_get_affiliation, requestor) 284 d.addCallback(_get_affiliation, requestor)
285 d.addCallback(self._do_set_node_configuration, options) 285 d.addCallback(self._do_set_node_configuration, options)
286 return d 286 return d