api.py 文件源码

def update_compute_node(self, context, node_uuid, values):
        if 'uuid' in values:
            msg = _('Cannot overwrite UUID for an existing node.')
            raise exception.InvalidParameterValue(err=msg)

        try:
            target = self.client.read('/compute_nodes/' + node_uuid)
            target_value = json.loads(target.value)
            target_value.update(values)
            target.value = json.dumps(target_value)
            self.client.update(target)
        except etcd.EtcdKeyNotFound:
            raise exception.ComputeNodeNotFound(compute_node=node_uuid)
        except Exception as e:
            LOG.error(
                'Error occurred while updating compute node: %s',
                six.text_type(e))
            raise
        return translate_etcd_result(target, 'compute_node')