任何在使用者流程内定义的逻辑都必须特定于应用程序(或通道)。

Any logic that is defined within the consumer processes must be specific to the application (or channel).

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使用者与逻辑总线进行通信，而后者跟踪来自提供者的可用服务，并负责调用恰当的提供者。

The consumers communicate with the logical bus, which keeps track of the available services from the providers, and in turn calls the appropriate provider.

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图3描述了一个这样的逻辑体系结构，其中的服务提供者和服务使用者通过逻辑总线进行通信。

Figure 3 depicts such a logical architecture where the service providers and service consumers communicate through a logical bus.

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