# agents\_db.py

包括三个类，继承自model\_base.BASEV2和models\_v2.HasId的Agent类，继承自neutron.extensions.agent.AgentPluginBase的AgentDbMixin类，继承自rpc.RpcCallback的AgentExtRpcCallback。

Agent类表示数据库中对一个agent的相关信息的记录。

AgentDbMixin类用于添加对agent扩展的支持到db\_base\_plugin\_v2，提供了获取配置、对agent进行curd操作等方法。

AgentExtRpcCallback类在plugin的实现中用于处理rpc汇报，其中定义了report\_state()方法用于向plugin汇报状态。


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