[Ryu-devel] 回复： How to get data from other module.
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[Ryu-devel] 回复： How to get data from other module.
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From: muzixing.c. <151...@qq...> - 2015-08-27 07:46:28
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It Seems good! I will try. But finally, I build a lower app to produce data, and use it by using CONTEXT. Second, API is also a good way which can also return the data of instance, but it is a little bit difficult to develop. Thank you very much! Are you a official developer of Ryu ? You are excellent! ------------------ Distance 李呈 _____________________________________________________ School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing 100876, PR China 北京邮电大学·信息与通信工程学院·通信工程 _____________________________________________________ Mobile Phone: (+86) 151-1698-3550 Beijing E-mail: 350...@qq... lic...@gm... Homepage: http://www.muzixing.com ------------------ 原始邮件 ------------------ 发件人: "Yusuke Iwase";<iwa...@gm...>; 发送时间: 2015年8月27日(星期四) 上午10:21 收件人: "muzixing.com"<151...@qq...>; 抄送: "ryu-devel"<ryu...@li...>; 主题: Re: [Ryu-devel] How to get data from other module. Hi, On 2015年08月26日 12:41, muzixing.com wrote: > Hi, all. > If I want to get some data from other module of app, what should I do? > > I know we can use CONTEXT to get the app as a service, and then we can get the data in that app. But, the logic of these two app is not about producer and consumer. > The second method to get this data is using API. So, I have to build some API just like topology' API. However , I notice that Switches in topology just return the new data, if I want to write something into that data, it won't change the real data. > Obviously, use import just can get the static defined data of using methods, we can't get the data of an alive object. > > So, what I need is a method to share the data between tow apps. How about using app_manager.lookup_service_brick('Name of your RyuApp') method? You can get a RyuApp instance by the name of your RyuApp. e.g.) $ git diff diff --git a/ryu/app/simple_switch_13.py b/ryu/app/simple_switch_13.py index 3e7c598..a0c69a8 100644 --- a/ryu/app/simple_switch_13.py +++ b/ryu/app/simple_switch_13.py @@ -32,6 +32,8 @@ class SimpleSwitch13(app_manager.RyuApp): @set_ev_cls(ofp_event.EventOFPSwitchFeatures, CONFIG_DISPATCHER) def switch_features_handler(self, ev): + ofctl_rest_RyuApp = app_manager.lookup_service_brick('RestStatsApi') + self.logger.info('ofctl_rest=%s', ofctl_rest_RyuApp) datapath = ev.msg.datapath ofproto = datapath.ofproto parser = datapath.ofproto_parser $ $ ryu-manager ryu.app.ofctl_rest ryu.app.simple_switch_13 loading app ryu.app.ofctl_rest loading app ryu.app.simple_switch_13 loading app ryu.controller.ofp_handler instantiating app None of DPSet creating context dpset creating context wsgi instantiating app ryu.app.ofctl_rest of RestStatsApi instantiating app ryu.app.simple_switch_13 of SimpleSwitch13 instantiating app ryu.controller.ofp_handler of OFPHandler (6472) wsgi starting up on http://0.0.0.0:8080/ ofctl_rest=<ryu.app.ofctl_rest.RestStatsApi object at 0x7fe164a34d50> Please comfirm that RyuApp is already instantiated when you call lookup_service_brick() method. Thanks, Iwase > > Thank you for your time. > ------------------ > Distance 李呈 > > _____________________________________________________ > School of Information and Communication Engineering > Beijing University of Posts and Telecommunications > Beijing 100876, PR China > > 北京邮电大学·信息与通信工程学院·通信工程 > _____________________________________________________ > Mobile Phone: > (+86) 151-1698-3550 Beijing > E-mail: > 350...@qq... > lic...@gm... > Homepage: > http://www.muzixing.com > > > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > Ryu-devel mailing list > Ryu...@li... > https://lists.sourceforge.net/lists/listinfo/ryu-devel > ------------------------------------------------------------------------------ _______________________________________________ Ryu-devel mailing list Ryu...@li... https://lists.sourceforge.net/lists/listinfo/ryu-devel |
