factory.py 文件源码

def configure(self):
        shards = dict()
        nodes = django_settings.DJANGO_AUTOSHARD.NODES
        for node in nodes:
            try:
                _ = node['HOST']
            except KeyError:
                raise exceptions.ImproperlyConfigured('Node {} does not have a host.'.format(node))
            try:
                _ = node['RANGE']
            except KeyError:
                raise exceptions.ImproperlyConfigured('Node {} does not specify a shard range.'.format(node))

            node_shards = self.set_logical_shards(node)
            shards.update(node_shards)

        django_settings.SHARDS = OrderedDict(sorted(shards.items()))
        django_settings.DATABASE_ROUTERS = ('django_autoshard.routers.ShardRouter', )