Eclipse Ditto 物模型相关代码

一、概述

本文主要就Hello World 教程 • Eclipse Ditto™ • 数字孪生框架文章做一个梳理，归纳。

二、完整代码如下

复制代码

{
  "thingId": "io.eclipseprojects.ditto:floor-lamp-0815",
  "policyId": "io.eclipseprojects.ditto:floor-lamp-0815",
  "definition": "https://eclipse-ditto.github.io/ditto-examples/wot/models/floor-lamp-1.0.0.tm.jsonld",
  "attributes": {
    "manufacturer": "",
    "serialNo": ""
  },
  "features": {
    "Spot1": {
      "definition": [
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/dimmable-colored-lamp-1.0.0.tm.jsonld",
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/colored-lamp-1.0.0.tm.jsonld",
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/switchable-1.0.0.tm.jsonld"
      ],
      "properties": {
        "dimmer-level": 0,
        "color": { "r": 0, "g": 0, "b": 0 },
        "on": false
      }
    },
    "Spot2": {
      "definition": [
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/dimmable-colored-lamp-1.0.0.tm.jsonld",
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/colored-lamp-1.0.0.tm.jsonld",
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/switchable-1.0.0.tm.jsonld"
      ],
      "properties": {
        "dimmer-level": 0,
        "color": { "r": 0, "g": 0, "b": 0 },
        "on": false
      }
    },
    "Spot3": {
      "definition": [
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/dimmable-colored-lamp-1.0.0.tm.jsonld",
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/colored-lamp-1.0.0.tm.jsonld",
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/switchable-1.0.0.tm.jsonld"
      ],
      "properties": {
        "dimmer-level": 0,
        "color": { "r": 0, "g": 0, "b": 0 },
        "on": false
      }
    },
    "ConnectionStatus": {
      "definition": [
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/connection-status-1.0.0.tm.jsonld"
      ],
      "properties": {
        "readySince": "",
        "readyUntil": ""
      }
    },
    "PowerConsumptionAwareness": {
      "definition": [
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/power-consumption-aware-1.0.0.tm.jsonld"
      ],
      "properties": {
        "reportPowerConsumption": {}
      }
    },
    "SmokeDetection": {
      "definition": [
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/smoke-detector-1.0.0.tm.jsonld"
      ]
    },
    "Status-LED": {
      "definition": [
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/colored-lamp-1.0.0.tm.jsonld",
        "https://eclipse-ditto.github.io/ditto-examples/wot/models/switchable-1.0.0.tm.jsonld"
      ],
      "properties": {
        "color": { "r": 0, "g": 0, "b": 0 },
        "on": false
      }
    }
  }
}

三、创建一个物模型

（1）创建"落地灯"的数字孪生设备

bash 复制代码

curl -u ditto:ditto -X PUT -H 'Content-Type: application/json' -d '{
  "definition": "https://eclipse-ditto.github.io/ditto-examples/wot/models/floor-lamp-1.0.0.tm.jsonld",
  "attributes": {
    "manufacturer": "ACME",
    "serialNo": "0815666337"
  }
}' 'http://localhost:8080/api/2/things/io.eclipseprojects.ditto:floor-lamp-0815'

（2）通过ID查询该设备

bash 复制代码

curl -u ditto:ditto -X GET \
  'http://localhost:8080/api/2/things/io.eclipseprojects.ditto:floor-lamp-0815' | jq

# if you have python installed, that's an alternative for pretty-printing:
curl -u ditto:ditto -X GET \
  'http://localhost:8080/api/2/things/io.eclipseprojects.ditto:floor-lamp-0815' | python -m json.tool

（3）添加带有状态的功能

添加一个特征来表示灯的第一个聚光灯。特征保存动态状态数据，如传感器读数或设备配置：

bash 复制代码

curl -u ditto:ditto -X PUT -H 'Content-Type: application/json' -d '{
  "properties": {
    "on": false,
    "dimmer-level": 0,
    "color": { "r": 0, "g": 0, "b": 0 }
  }
}' 'http://localhost:8080/api/2/things/io.eclipseprojects.ditto:floor-lamp-0815/features/Spot1'

（4）检索当前灯的状态

例如：检索当前开关状态：Spot1

bash 复制代码

curl -u ditto:ditto -X GET \
  'http://localhost:8080/api/2/things/io.eclipseprojects.ditto:floor-lamp-0815/features/Spot1/properties/on'

四、更新物模型数据

（1）通过更新灯具属性来点亮灯具：on

bash 复制代码

curl -u ditto:ditto -X PUT -H 'Content-Type: application/json' -d 'true' \
  'http://localhost:8080/api/2/things/io.eclipseprojects.ditto:floor-lamp-0815/features/Spot1/properties/on'

（2）查询产品

bash 复制代码

curl -u ditto:ditto -X GET \
  'http://localhost:8080/api/2/search/things?filter=eq(attributes/manufacturer,"ACME")'