EdgeX（5）使用Python 进行服务的注册，参考github 上面的项目，通过API 服务进行注册。
目录
- 前言
- 1，关于EdgeX Python
- 2，项目说明
- 3，总结
前言
相关EdgeX Foundry 全部分类：
https://blog.csdn.net/freewebsys/category_9437788.html
本文的原文连接是:
https://blog.csdn.net/freewebsys/article/details/107606848
未经博主允许不得转载。
博主地址是：http://blog.csdn.net/freewebsys
1，关于EdgeX Python
EdgeX 有 golang 的和 c的 SDK，但是目前没有 python 的服务。
需要自己折腾。还好万能 的GITHUB 上面有人已经研究了。
https://github.com/jonas-werner/EdgeX_Foundry-Device_Creation
2，项目说明
特别简单，一个python 脚本。
egfCreateEndpoint-07.py
运行的时候直接
python egfCreateEndpoint-07.py -ip xx.xx.xx.xx -version edinburgh
脚本就支持两个 版本 一个 edinburgh ，一个 delhi
使用python 的requests 和 requests_toolbelt 库直接进行接口访问：
#!/usr/bin/python
##############################################################################################################
# ______ __ _ __ __ _ __
# / ____/___/ /___ ____ | |/ / ____/ /__ _ __(_)_______ _____________ ____ _/ /_____ _____
# / __/ / __ / __ `/ _ \| / / __ / _ \ | / / / ___/ _ \ / ___/ ___/ _ \/ __ `/ __/ __ \/ ___/
# / /___/ /_/ / /_/ / __/ | / /_/ / __/ |/ / / /__/ __/ / /__/ / / __/ /_/ / /_/ /_/ / /
# /_____/\__,_/\__, /\___/_/|_| \__,_/\___/|___/_/\___/\___/ \___/_/ \___/\__,_/\__/\____/_/
# /____/
##############################################################################################################
# Name; egfCreateEndpoint-07.py
# Version: 0.7
# Author: Jonas Werner
##############################################################################################################
import requests, json, sys, re, time, os, warnings, argparse
from requests_toolbelt.multipart.encoder import MultipartEncoder
from datetime import datetime
warnings.filterwarnings("ignore")
# Gather information from arguments
parser=argparse.ArgumentParser(description="Python script for creating a new device from scratch in EdgeX Foundry")
parser.add_argument('-ip',help='EdgeX Foundry IP address', required=True)
parser.add_argument('-version',help='EdgeX Foundry version (delhi or edinburgh)', required=True)
args=vars(parser.parse_args())
edgex_ip=args["ip"]
edgexVer=args["version"]
# Make two calls to Core Metadata, to create the Addressable for the Device Service:
def createAddressables():
# Create the addressable for the Device Service:
url = 'http://%s:48081/api/v1/addressable' % edgex_ip
payload = {
"name": "humidity and temp address 1",
"protocol": "HTTP",
"address": "172.17.0.1",
"port": 49999,
"path": "/hum_and_temp_cluster-01",
"publisher": "none",
"user": "none",
"password": "none",
"topic": "none"
}
headers = {'content-type': 'application/json'}
response = requests.post(url, data=json.dumps(payload), headers=headers, verify=False)
print("Result of create addressables: %s with message %s" % (response, response.text))
def createValueDescriptors():
url = 'http://%s:48080/api/v1/valuedescriptor' % edgex_ip
payload = {
"name": "Humidity",
"description": "Ambient humidity in percent",
"max": "100",
"min": "0",
"type": "I",
"uomLabel": "count",
"defaultValue": "0",
"formatting": "%s",
"labels": [
"humidity",
"percent"
]
}
headers = {'content-type': 'application/json'}
response = requests.post(url, data=json.dumps(payload), headers=headers, verify=False)
print("Result of creating value descriptor for humidity: %s with message %s" % (response, response.text))
payload = {
"name": "Temperature in C",
"description": "Ambient temperature in Celcius",
"min": "-10",
"max": "100",
"type": "I",
"uomLabel": "count",
"defaultValue": "0",
"formatting": "%s",
"labels": [
"temp",
"celcius"
]
}
headers = {'content-type': 'application/json'}
response = requests.post(url, data=json.dumps(payload), headers=headers, verify=False)
print("Result creating value descriptor for temperature: %s with message %s" % (response, response.text))
def uploadDeviceProfile():
multipart_data = MultipartEncoder(
fields={
# a file upload field
'file': ('file.py', open('EdgeX_TempHumidity_MonitorProfile.yml', 'rb'), 'text/plain')
}
)
url = 'http://%s:48081/api/v1/deviceprofile/uploadfile' % edgex_ip
response = requests.post(url, data=multipart_data,
headers={'Content-Type': multipart_data.content_type})
print("Result of uploading device profile: %s with message %s" % (response, response.text))
def createDeviceService():
url = 'http://%s:48081/api/v1/deviceservice' % edgex_ip
payload = {
"name": "sensor cluster control device service",
"description": "Manage sensor clusters delivering humidity and temperature readings",
"labels": [
"Raspberry Pi",
"Sensor cluster"
],
"adminState": "unlocked",
"operatingState": "enabled",
"addressable": {
"name": "humidity and temp address 1"
}
}
headers = {'content-type': 'application/json'}
response = requests.post(url, data=json.dumps(payload), headers=headers, verify=False)
print("Result of create device service: %s with message %s" % (response, response.text))
def addNewDevice(edgexVer):
url = 'http://%s:48081/api/v1/device' % edgex_ip
if edgexVer == "delhi":
payload = {
"name": "Temp_and_Humidity_sensor_cluster_01",
"description": "Raspberry Pi sensor cluster",
"adminState": "unlocked",
"operatingState": "enabled",
"addressable": {
"name": "humidity and temp address 1"
},
"labels": [
"Raspberry Pi",
"Sensor cluster"
],
"location": "",
"service": {
"name": "sensor cluster control device service"
},
"profile": {
"name": "Temp and Humidity sensor cluster monitor profile - 01"
}
}
elif edgexVer == "edinburgh":
payload = {
"name": "Temp_and_Humidity_sensor_cluster_01",
"description": "Raspberry Pi sensor cluster",
"adminState": "unlocked",
"operatingState": "enabled",
"protocols": {
"example": {
"host": "localhost",
"port": "1234",
"unitID": "1"
}
},
"addressable": {
"name": "humidity and temp address 1"
},
"labels": [
"Raspberry Pi",
"Sensor cluster"
],
"location": "",
"service": {
"name": "sensor cluster control device service"
},
"profile": {
"name": "Temp and Humidity sensor cluster monitor profile - 01"
}
}
headers = {'content-type': 'application/json'}
response = requests.post(url, data=json.dumps(payload), headers=headers, verify=False)
print("Result of creating the device: %s with message %s" % (response, response.text))
if __name__ == "__main__":
# Sanity check
if not edgexVer == "delhi" and not edgexVer == "edinburgh":
print("Supported versions are either delhi or edinburgh")
sys.exit()
else:
print("EdgeX Foundry version is: %s" % edgexVer)
createAddressables()
createValueDescriptors()
uploadDeviceProfile()
createDeviceService()
addNewDevice(edgexVer)
同时本地还要有个配置文件：
EdgeX_TempHumidity_MonitorProfile.yml
# Copyright 2017 Dell Inc. All rights reserved.
name: "Temp and Humidity sensor cluster monitor profile - 01"
manufacturer: "Dell EMC"
model: "Dell_EMC sensor cluster model ABC12345"
labels:
- "sensorcluster"
description: "Temp and Humidity sensor cluster monitor profile - 01"
commands:
-
name: Humidity
get:
path: "/api/v1/devices/{deviceId}/temperature"
responses:
-
code: "200"
description: "Humidity near sensorcluster"
expectedValues: ["humidity"]
-
code: "503"
description: "service unavailable"
expectedValues: ["sensorclustererror"]
-
name: Temperature
get:
path: "/api/v1/devices/{deviceId}/humidity"
responses:
-
code: "200"
description: "Temperature near sensorcluster"
expectedValues: ["temperature"]
-
code: "503"
description: "service unavailable"
expectedValues: ["sensorclustererror"]
-
-
name: hum_temp_values
get:
path: "/api/v1/devices/{deviceId}/values"
responses:
-
code: "200"
description: "Get the humidity and temperature values"
expectedValues: ["value","value"]
-
code: "503"
description: "service unavailable"
expectedValues: []
启动之后就可以注册 python 的服务了。
3，总结
开源边缘计算框架 EdgeX Foundry ，服务启动之后，python的程序也可以进行注册。
注册之后就可以提供服务了。
本文的原文连接是:
https://blog.csdn.net/freewebsys/article/details/107606848
相关EdgeX Foundry 全部分类：
https://blog.csdn.net/freewebsys/category_9437788.html
博主地址是：https://blog.csdn.net/freewebsys
