启动 流程
1. cinder/cmd/scheduler.py
创建 一个 服务 并 等待 它的 退出
server = service.Service.create(binary='cinder-scheduler') service.serve(server) service.wait()
2. cinder/service.py
2.1 Class Service : create
在 类 init 之前 执行 ， 主要 对 topic 进行了 初始化
从而 拼接 得到了 manager = ‘scheduler_manager’
if not host: host = CONF.host if not binary: binary = os.path.basename(inspect.stack()[-1][1]) if not topic: topic = binary if not manager: subtopic = topic.rpartition('cinder-')[2] manager = CONF.get('%s_manager' % subtopic, None) # (Pdb) !print(manager) # cinder.scheduler.manager.SchedulerManager
2.2 Class Service : init
self.manager_class_name = manager manager_class = importutils.import_class(self.manager_class_name)
