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| Interface function | Description | Input | Operate | Output |
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| Pipeline function | The virtual bus automatically creates a pipeline with other apps and services. | Pipeline no. | Judging whether the pipeline exists or not | Do all communication channels exist? |
| Pipeline communication frame (CA and SA are consistent, single frame, multiframe, small data frame, and large data frame) | Send the pipeline communication frame to the virtual bus service through the corresponding pipeline | The virtual bus is distributed through the corresponding pipeline data |
| Virtual bus data distribution function | The virtual bus performs correct distribution processing according to the data identification and control code in the data frame | The data identification of metering service management constitutes the pipeline communication frame | Send the pipeline communication frame to the virtual bus through the corresponding pipeline | Whether the virtual bus distributed data is distributed through the pipeline of metering management service, comparing the integrity and legitimacy of distributed data |
| The data identifier managed by the platform management service constitutes a pipeline communication frame | Whether the virtual bus distributed data is distributed through the pipeline of platform management service, comparing the integrity and legitimacy of distributed data |
| The data identifier of the management service management constitutes a communication frame | Whether the virtual bus distributed data is distributed through the pipeline of communication management service, comparing the integrity and legitimacy of distributed data |
| The data identifier managed by the basic app is used to form a pipeline communication frame | Whether the virtual bus distributed data is distributed through the pipeline of basic application app, comparing the integrity and legitimacy of distributed data |
| Compose pipeline communication frame through transparent transmission control code | Whether the virtual bus is forwarded to the corresponding extended app pipeline according to the object code SA of the extended app, and the integrity and legitimacy of the distributed data are compared |
| The virtual bus supports the extended app registration function | According to the extended app registration information, the virtual bus creates a corresponding pipeline and stores the extended app registration information | The extended app registration information constitutes a pipeline frame, and the extended app registration information is read to constitute a pipeline frame | Send the pipeline frame to the virtual bus through the extended app reservation registration pipeline | The virtual bus establishes the corresponding extended app communication pipeline according to the registration information and returns the stored extended app registration information |
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