virtual-device

Quick start

1. Write your DeviceProfile as config file(config/profile.json).
2. Write your DeviceList and VirtualResource as config file(config/device.json), VirtualResource is referred to device resources which define in DeviceProfile
3. Install a kafka broker and create topic(default test), config them in the kafka_reporter.
4. Run main

Understand how it worked

1. DeviceProfile define a kind of device's resource, resource has value attr.
2. DeviceList define device's attr and virtual resource.
3. VirtualResource is {profile_name}:{resource_name}:VirtualResource, eg: crane:current:ResourceFloat.
4. Every device create a VirtualDeviceTwin with VirtualResource, then spawn VirtualDeviceTwin to a thread to generate Values and reporter them.

Features

1. Rich virtual resource: random, line etc.
2. Rich reporter with sequence: kafka and mqtt, kafka use one common topic and split one device to one partition by device_id key, mqtt sequence with one device one topic which topic name is topic_prefix/device_id.

Supported virtual resource

• resource_float : random f32 between maximum and minimum
• resource_int: random i32 between maximum and minimum
• one_of_list: config a type list, get one of them

Example

"{\"device_id\":\"001\",\"event_time\":\"1650793385418\",\"current\":\"1.5\",\"voltage\":\"9\"}"
"{\"device_id\":\"002\",\"voltage\":\"7\",\"event_time\":\"1650793385418\",\"current\":\"1.5\"}"
Successfully produced record to topic test partition [0] @ offset 436
Successfully produced record to topic test partition [0] @ offset 437
"{\"device_id\":\"001\",\"event_time\":\"1650793385418\",\"current\":\"1.5\",\"voltage\":\"3\"}"
"{\"device_id\":\"002\",\"voltage\":\"0\",\"event_time\":\"1650793385418\",\"current\":\"1.5\"}"
Successfully produced record to topic test partition [0] @ offset 438
Successfully produced record to topic test partition [0] @ offset 439
"{\"device_id\":\"001\",\"event_time\":\"1650793385418\",\"current\":\"1.5\",\"voltage\":\"0\"}"
"{\"device_id\":\"002\",\"voltage\":\"0\",\"event_time\":\"1650793385418\",\"current\":\"1.5\"}"
Successfully produced record to topic test partition [0] @ offset 440
Successfully produced record to topic test partition [0] @ offset 441
"{\"device_id\":\"001\",\"event_time\":\"1650793385418\",\"current\":\"1.5\",\"voltage\":\"4\"}"
"{\"device_id\":\"002\",\"voltage\":\"0\",\"event_time\":\"1650793385418\",\"current\":\"1.5\"}"
Successfully produced record to topic test partition [0] @ offset 442
Successfully produced record to topic test partition [0] @ offset 443