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event_time- a timestamp of user authorization.

Examples

Session start message

When a parking session starts, the Nwave cloud builds a message that contains only data about the sensor and time of parking session beginning.

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Expand
Code Block
 {
  "parking_session_uuid": "da2ecb68-efb1-458e-ba5d-e5ba80b87f6e",
  "involved_devices": [
    {
      "device_id": "33c83",
      "hardware_type": "Sparkit Surface V3.9",
      "position": {
        "network_id": "00000000-0000-0000-0000-000000033c83",
        "custom_id": "cd4206ec-6876-4eca-b859-d5735dd97386",
        "latitude": 50.780323,
        "longitude": -1.0682689,
        "group": {
          "id": 1729,
          "type": "unmarked_parking_bay",
          "name": "5EastneyEsplanade",
          "custom_id": "cd4206ec-6876-4eca-b859-d5735dd97386",
          "zone_id": 5,
          "level_id": null,
          "floor_number": null
        },
        "group_inner_id": 54
      }
    }, {
      "device_id": "33e5f",
      "hardware_type": "Sparkit Surface V3.9",
      "position": {
        "network_id": "00000000-0000-0000-0000-000000033e5f",
        "custom_id": "cd4206ec-6876-4eca-b859-d5735dd97386",
        "latitude": 50.78033,
        "longitude": -1.0682275,
        "group": {
          "id": 1729,
          "type": "unmarked_parking_bay",
          "name": "5EastneyEsplanade",
          "custom_id": "cd4206ec-6876-4eca-b859-d5735dd97386",
          "zone_id": 5,
          "level_id": null,
          "floor_number": null
        },
        "group_inner_id": 55
      }
    }
  ],
  "correction_counter": 0,
  "session_start": {
    "event_time": "2021-01-26T09:54:08.287000+00:00",
    "delta_time_sec": 0,
    "message_trace_ids": [
      "65ab2a63-e7c2-8674-aa3d-7047cb428a31"
    ]
  },
  "partial_end": {
    "event_time": "2021-01-26T10:03:23.900000+00:00",
    "delta_time_sec": 0,
    "message_trace_ids": [
      "56d9035a-e4dc-9661-0804-a968d9a92d0b"
    ],
    "network_id": "00000000-0000-0000-0000-000000033e5f",
    "custom_id": "cd4206ec-6876-4eca-b859-d5735dd97386"
  },
  "session_end": {
    "event_time": "2021-01-26T10:16:10.116000+00:00",
    "delta_time_sec": 0,
    "message_trace_ids": [
      "8182f7b8-f5bf-2084-aac8-0b3412965a84"
    ]
  }
}

Session edges correction

As you can see in the examples above, all the messages contain the correction_counter field. This field and the field parking_session_uuid allows you to apply corrections to parking sessions in the right order.

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