Python3: AWS IOT の Device Shadow

こちらのスクリプトのいくつかを、Boto3 で書いてみました。
AWS IOT の Device Shadow

エンドポイントは次のコマンドで調べます。

aws iot describe-endpoint --endpoint-type iot:Data-ATS

エンドポイント が次の場合のサンプルです。

https://abcd6goq68zt4o-ats.iot.ap-northeast-1.amazonaws.com

もの

sample_sep26

デバイスの状態が OFF であることを通知

report_off_thing.py

#! /usr/bin/python
# coding: utf-8
#
#   report_off_thing.py
#
#                   Sep/28/2021
# ------------------------------------------------------------------
import json
import boto3

# ------------------------------------------------------------------
url='https://abcd6goq68zt4o-ats.iot.ap-northeast-1.amazonaws.com'
thing='sample_sep26'
#
iot_data = boto3.client('iot-data', endpoint_url=url)

shadowDoc = {'state':{'reported':{'led':'off'}}}
payload = json.dumps(shadowDoc)

res = iot_data.update_thing_shadow(thingName=thing, payload=payload)
#
# ------------------------------------------------------------------

デバイスの状態が ON であることを通知

report_on_thing.py

#! /usr/bin/python
# coding: utf-8
#
#   report_on_thing.py
#
#                   Sep/28/2021
# ------------------------------------------------------------------
import json
import boto3

# ------------------------------------------------------------------
url='https://abcd6goq68zt4o-ats.iot.ap-northeast-1.amazonaws.com'
thing='sample_sep26'
#
iot_data = boto3.client('iot-data', endpoint_url=url)

shadowDoc = {'state':{'reported':{'led':'on'}}}
payload = json.dumps(shadowDoc)

res = iot_data.update_thing_shadow(thingName=thing, payload=payload)
#
# ------------------------------------------------------------------

デバイスを OFF にするように指令

command_off_thing.py

#! /usr/bin/python
# coding: utf-8
#
#   command_off_thing.py
#
#                   Sep/28/2021
# ------------------------------------------------------------------
import json
import boto3

# ------------------------------------------------------------------
url='https://abcd6goq68zt4o-ats.iot.ap-northeast-1.amazonaws.com'
thing='sample_sep26'
#
iot_data = boto3.client('iot-data', endpoint_url=url)

shadowDoc = {'state':{'desired':{'led':'off'}}}
payload = json.dumps(shadowDoc)

res = iot_data.update_thing_shadow(thingName=thing, payload=payload)
#
# ------------------------------------------------------------------

デバイスを ON にするように指令

command_on_thing.py

#! /usr/bin/python
# coding: utf-8
#
#   command_on_thing.py
#
#                   Sep/28/2021
# ------------------------------------------------------------------
import json
import boto3

# ------------------------------------------------------------------
url='https://abcd6goq68zt4o-ats.iot.ap-northeast-1.amazonaws.com'
thing='sample_sep26'
#
iot_data = boto3.client('iot-data', endpoint_url=url)

shadowDoc = {'state':{'desired':{'led':'on'}}}
payload = json.dumps(shadowDoc)

res = iot_data.update_thing_shadow(thingName=thing, payload=payload)
#
# ------------------------------------------------------------------

Shadow の状態を取得

get_thing_shadow.py

#! /usr/bin/python
# coding: utf-8
#
#   get_thing_shadow.py
#
#                   Sep/28/2021
# ------------------------------------------------------------------
import json
import boto3

# ------------------------------------------------------------------
url='https://abcd6goq68zt4o-ats.iot.ap-northeast-1.amazonaws.com'
thing='sample_sep26'
#
iot_data = boto3.client('iot-data', endpoint_url=url)

res = iot_data.get_thing_shadow(thingName=thing)

bb=res['payload'].read()
print(bb.decode())
# ------------------------------------------------------------------

次のバージョンで確認しました。

$ python
Python 3.9.7 (default, Aug 31 2021, 13:28:12) 
[GCC 11.1.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import boto3
>>> boto3.__version__
'1.18.34'
>>>