openedge_function can only been triggered by local mqtt client about baetyl HOT 7 CLOSED

@tongtongxiaopeng1979
More about remote module user-guide：https://openedge.tech/docs/tutorials/local/Message-synchronize-with-iothub-whith-remote-module

If you want to access openedge-function via baidu-iothub, the data path is : MQTT client(for baidu-iothub) -> baidu-iothub -> openedge-mqtt-remote -> openedge-hub -> openedge-function -> openedge-hub -> MQTT client(for openedge).

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@tongtongxiaopeng1979
More about remote module user-guide：https://openedge.tech/docs/tutorials/local/Message-synchronize-with-iothub-whith-remote-module

If you want to access openedge-function via baidu-iothub, the data path is : MQTT client(for baidu-iothub) -> baidu-iothub -> openedge-mqtt-remote -> openedge-hub -> openedge-function -> openedge-hub -> MQTT client(for openedge).

thanks for your reply . there is one question
when you create a openedge_function module for the local hub, you have to fill in the "Privilege name". The priviledge name actually is the permission to local hub. so it means mqtt_remote not have permission to access openedge-function. is it correct?

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@tongtongxiaopeng1979
Yeah, actually, all module messages need to go through the hub module, and messages processing depends on rule config.

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@tongtongxiaopeng1979 先问个问题：如果消息（数据）已经上云了，为何不在云端继续处理消息？比如使用CFC。OpenEdge的使用场景是在边缘采集和处理消息，然后上云，而不是反过来。
Ask a question first: If the message (data) is already in the cloud, why not continue to process the message in the cloud? For example, use CFC. The use of OpenEdge is to collect and process messages at the edge and then send to the cloud instead of the other way around.

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@ludanfeng
You are right, it is typical use case for the data path you mentioned . But there is a special use case that need to use FAAS in the openEdge to implement communication with other application or platform in the same host.

这个用例比较特殊，如果openEdge是架构在用户其他平台上面，用户可能会利用openedge FC功能和用户其他平台进行交互。该交互可以由远程一个client触发。

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@tongtongxiaopeng1979 你看看下面几种方式哪个更适合你们：

1. [TODO]openedge的函数计算直接暴露grpc接口，提供给远程grpc client调用
2. [TODO]openedge支持远程mqtt server直接作为本地hub使用，即把mqtt remote当做本地hub
3. 如同 @kuailehaibin 描述的方案将远程消息先使用mqtt client发送到openedge的本地hub，再通过路由规则触发函数计算

为了提高沟通效率，是否可以加微信群？

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@ludanfeng 先按照mengtao的方法吧，我们公司不是做行业应用和业务的，只不过我手边有个项目有个特殊需求而已。

至于 1 和 2 做不做,还是你们和行业客户来决定吧。

好的，已经加入沟通交流微信群了。 这个问题我先关闭，谢谢你们指导 : )

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