def try_load_representation(representation, timestamp=timestamper.now()):
if __debug__: logging.debug('timestamp = %s, representation = %s', timestamp, representation)
try:
configuration = Configuration(representation, timestamp)
return configuration
except ValidationError, e:
logging.error('Configuration is not valid: %s', e)
return None
def __init__(self, representation=None, timestamp=timestamper.now()):
super(Configuration, self).__init__()
self.timestamp = timestamp
if representation:
validate_representation(representation)
self.original_representation = representation
self.deployments = dict((name, Deployment(name, deployment_representation)) for name, deployment_representation in representation.get('deployments', {}).iteritems())
self.active_deployment_name = representation['active_deployment']
self.active_deployment = self.deployments[self.active_deployment_name]
self.target_deployment_name = representation.get('target_deployment', None)
self.target_deployment = self.deployments[self.target_deployment_name] if self.target_deployment_name else None
self.coordinators = dict((coordinator_id, Coordinator(coordinator_id, address, port)) for coordinator_id, (address, port) in representation.get('coordinators', {}).iteritems())
self.master_coordinator_id = representation.get('master_coordinator', None)
self.master_coordinator = self.coordinators.get(self.master_coordinator_id, None)
def __get_timestamp(self, env):
try:
return timestamper.try_loads(env.get('HTTP_X_TIMESTAMP', None)) or timestamper.now()
except ValueError:
raise httpserver.BadRequest()
def try_load_json(s, timestamp=timestamper.now()):
try:
representation = json.loads(s)
except Exception, e:
logging.error('Failed to parse JSON configuration: %s', e)
return None