README.md

@@ -4,7 +4,7 @@ Playing with IoT
 
 [![Build Status](https://travis-ci.com/daniviga/bite.svg?branch=master)](https://travis-ci.com/daniviga/bite)
 ![AGPLv3](./docs/.badges/agpl3.svg)
-![Python 3.11](./docs/.badges/python.svg)
+![Python 3.9](./docs/.badges/python.svg)
 ![MQTT](./docs/.badges/mqtt.svg)
 ![Moby](./docs/.badges/moby.svg)
 ![docker-compose 3.7+](./docs/.badges/docker-compose.svg)
@@ -15,6 +15,11 @@ production.
 
 ![Application Schema](./docs/application_chart.png)
 
+### Future implementations
+
+- Broker HA via [VerneMQ clustering](https://docs.vernemq.com/clustering/introduction)
+- Stream analytics via [Apache Spark](https://spark.apache.org/)
+
 ## Installation
 
 ### Requirements
@@ -57,10 +62,8 @@ The application stack is composed by the following components:
 - [Django](https://www.djangoproject.com/) with
 [Django REST framework](https://www.django-rest-framework.org/)
 web application (running via `gunicorn` in production mode)
-  - `dispatcher` custom daemon to dump telemetry into the Kafka queue
-  - `handler` custom daemon to dump telemetry into the timeseries database from the Kafka queue
+  - `mqtt-to-db` custom daemon to dump telemetry into the timeseries database
   - telemetry payload is stored as json object (via PostgreSQL JSON data type)
-- [Kafka](https://kafka.apache.org/) broker
 - [Timescale](https://www.timescale.com/) DB,
 a [PostgreSQL](https://www.postgresql.org/) database with a timeseries extension
 - [Mosquitto](https://mosquitto.org/) MQTT broker (see alternatives below)

arduino/tempLightSensor/tempLightSensor.ino

@@ -55,7 +55,7 @@ struct netConfig {
 } config;
 
 char serial[9];
-const String dpsURL = "/dps/device/subscribe/";
+const String apiURL = "/api/device/subscribe/";
 const String telemetryURL = "/telemetry/";
 
 void setup(void) {
@@ -63,7 +63,7 @@ void setup(void) {
 
   analogReference(EXTERNAL);
 
-  StaticJsonDocument<20> dps;
+  StaticJsonDocument<20> api;
 
   byte mac[6];
   int eeAddress = 0;
@@ -110,8 +110,8 @@ void setup(void) {
   Serial.println("DEBUG: clock updated via NTP.");
 #endif
 
-  dps["serial"] = serial;
-  postData(config, dpsURL, dps);
+  api["serial"] = serial;
+  postData(config, apiURL, api);
 
   telemetry["device"] = serial;
   // payload["id"] = serverName;

bite/api/admin.py

@@ -18,7 +18,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from django.contrib import admin
-from dps.models import Device, WhiteList
+from api.models import Device, WhiteList
 
 
 @admin.register(Device)

bite/api/apps.py

@@ -20,5 +20,5 @@
 from django.apps import AppConfig
 
 
-class DPSConfig(AppConfig):
-    name = 'dps'
+class ApiConfig(AppConfig):
+    name = 'api'

bite/api/migrations/0001_initial.py

@@ -1,6 +1,6 @@
 # Generated by Django 3.1.3 on 2021-03-19 08:08
 
-import dps.models
+import api.models
 from django.db import migrations, models
 import uuid
 
@@ -16,7 +16,7 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='Device',
             fields=[
-                ('serial', models.CharField(max_length=128, unique=True, validators=[dps.models.device_validation])),
+                ('serial', models.CharField(max_length=128, unique=True, validators=[api.models.device_validation])),
                 ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
                 ('creation_time', models.DateTimeField(auto_now_add=True)),
                 ('updated_time', models.DateTimeField(auto_now=True)),

bite/api/serializers.py

@@ -18,7 +18,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from rest_framework import serializers
-from dps.models import Device, device_validation
+from api.models import Device, device_validation
 
 
 class DeviceSerializer(serializers.ModelSerializer):

bite/api/tests.py

@@ -18,10 +18,10 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from django.test import TestCase, Client
-from dps.models import Device, WhiteList
+from api.models import Device, WhiteList
 
 
-class DPSTestCase(TestCase):
+class ApiTestCase(TestCase):
     c = Client()
 
     def setUp(self):
@@ -29,17 +29,17 @@ class DPSTestCase(TestCase):
         Device.objects.create(serial='test1234')
 
     def test_no_whitelist(self):
-        response = self.c.post('/dps/device/provision/',
+        response = self.c.post('/api/device/subscribe/',
                                {'serial': 'test12345'})
         self.assertEqual(response.status_code, 400)
 
-    def test_provision_post(self):
+    def test_subscribe_post(self):
         WhiteList.objects.create(serial='test12345')
-        response = self.c.post('/dps/device/provision/',
+        response = self.c.post('/api/device/subscribe/',
                                {'serial': 'test12345'})
         self.assertEqual(response.status_code, 201)
 
-    def test_provision_get(self):
-        response = self.c.get('/dps/device/list/')
+    def test_subscribe_get(self):
+        response = self.c.get('/api/device/list/')
         self.assertEqual(
             response.json()[0]['serial'], 'test1234')

bite/api/urls.py

@@ -33,13 +33,13 @@ Including another URLconf
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 from django.urls import path
-from dps.views import DPS
+from api.views import APISubscribe
 
 urlpatterns = [
-    path('device/provision/',
-         DPS.as_view({'post': 'create'}),
-         name='device-provision'),
+    path('device/subscribe/',
+         APISubscribe.as_view({'post': 'create'}),
+         name='device-subscribe'),
     path('device/list/',
-         DPS.as_view({'get': 'list'}),
+         APISubscribe.as_view({'get': 'list'}),
          name='device-list'),
 ]

bite/api/views.py

@@ -19,10 +19,10 @@
 
 from rest_framework.viewsets import ModelViewSet
 
-from dps.models import Device
-from dps.serializers import DeviceSerializer
+from api.models import Device
+from api.serializers import DeviceSerializer
 
 
-class DPS(ModelViewSet):
+class APISubscribe(ModelViewSet):
     queryset = Device.objects.all()
     serializer_class = DeviceSerializer

bite/bite/local_settings.py.sample

@@ -1,20 +0,0 @@
-DATABASES = {
-    'default': {
-        'ENGINE': 'django.db.backends.postgresql',
-        'NAME': 'bite',
-        'USER': 'bite',
-        'PASSWORD': 'password',
-        'HOST': 'localhost',
-        'PORT': '5432',
-    }
-}
-
-MQTT_BROKER = {
-    'HOST': 'localhost',
-    'PORT': '1883',
-}
-
-KAFKA_BROKER = {
-    'HOST': 'localhost',
-    'PORT': '29092',
-}

bite/bite/settings.py

@@ -61,7 +61,7 @@ INSTALLED_APPS = [
     # 'health_check.storage',
     'rest_framework',
     'bite',
-    'dps',
+    'api',
     'telemetry',
 ]
 
@@ -151,10 +151,6 @@ STATIC_URL = '/static/'
 
 STATIC_ROOT = '/srv/appdata/bite/static'
 
-REST_FRAMEWORK = {
-    'DEFAULT_AUTHENTICATION_CLASSES': []
-}
-
 SKIP_WHITELIST = True
 
 MQTT_BROKER = {
@@ -162,17 +158,11 @@ MQTT_BROKER = {
     'PORT': '1883',
 }
 
-KAFKA_BROKER = {
-    'HOST': 'kafka',
-    'PORT': '9092',
-}
-
-try:
-    from bite.local_settings import *
-except ImportError:
-    pass
-
+# If no local_settings.py is availble in the current folder let's try to
+# load it from the application root
 try:
     from bite.production import *
 except ImportError:
+    # If a local_setting.py does not exist
+    # settings in this file only will be used
     pass

bite/bite/urls.py

@@ -37,13 +37,13 @@ from django.contrib import admin
 from django.conf import settings
 from django.urls import include, path
 
-from dps import urls as dps_urls
+from api import urls as api_urls
 from telemetry import urls as telemetry_urls
 
 urlpatterns = [
     path('admin/', admin.site.urls),
     path('ht/', include('health_check.urls')),
-    path('dps/', include(dps_urls)),
+    path('api/', include(api_urls)),
     path('telemetry/', include(telemetry_urls)),
 ]
 

bite/telemetry/management/commands/handler.py

@@ -1,76 +0,0 @@
-# -*- coding: utf-8 -*-
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-#
-# BITE - A Basic/IoT/Example
-# Copyright (C) 2020-2021 Daniele Viganò <daniele@vigano.me>
-#
-# BITE is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# BITE is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-import json
-import time
-from kafka import KafkaConsumer
-from kafka.errors import NoBrokersAvailable
-
-from django.conf import settings
-from django.core.management.base import BaseCommand
-from django.core.exceptions import ObjectDoesNotExist
-
-from dps.models import Device
-from telemetry.models import Telemetry
-
-
-class Command(BaseCommand):
-    help = "Telemetry handler"
-
-    KAFKA_HOST = settings.KAFKA_BROKER["HOST"]
-    KAFKA_PORT = int(settings.KAFKA_BROKER["PORT"])
-
-    def get_device(self, serial):
-        try:
-            return Device.objects.get(serial=serial)
-        except ObjectDoesNotExist:
-            return None
-
-    def store_telemetry(self, transport, message):
-        Telemetry.objects.create(
-            transport=transport,
-            device=self.get_device(message["device"]),
-            clock=message["clock"],
-            payload=message["payload"],
-        )
-
-    def handle(self, *args, **options):
-        while True:
-            try:
-                consumer = KafkaConsumer(
-                    "telemetry",
-                    bootstrap_servers="{}:{}".format(
-                        self.KAFKA_HOST, self.KAFKA_PORT
-                    ),
-                    group_id="handler",
-                    value_deserializer=lambda m: json.loads(m.decode("utf8")),
-                )
-                break
-            except NoBrokersAvailable:
-                self.stdout.write(
-                    self.style.WARNING("WARNING: Kafka broker not available")
-                )
-                time.sleep(5)
-
-        self.stdout.write(self.style.SUCCESS("INFO: Kafka broker subscribed"))
-        for message in consumer:
-            self.store_telemetry(
-                message.value["transport"], message.value["body"]
-            )
-        consumer.unsuscribe()

bite/telemetry/management/commands/mqtt-to-db.py

@@ -22,26 +22,22 @@ import asyncio
 import json
 import time
 import paho.mqtt.client as mqtt
-from kafka import KafkaProducer
-from kafka.errors import NoBrokersAvailable
 from asgiref.sync import sync_to_async
-from aiomqtt import Client
+from asyncio_mqtt import Client
 
 from django.conf import settings
 from django.core.management.base import BaseCommand
 from django.core.exceptions import ObjectDoesNotExist
 
-from dps.models import Device
+from api.models import Device
+from telemetry.models import Telemetry
+
+MQTT_HOST = settings.MQTT_BROKER['HOST']
+MQTT_PORT = int(settings.MQTT_BROKER['PORT'])
 
 
 class Command(BaseCommand):
-    help = "Telemetry dispatcher"
-
-    MQTT_HOST = settings.MQTT_BROKER["HOST"]
-    MQTT_PORT = int(settings.MQTT_BROKER["PORT"])
-    KAFKA_HOST = settings.KAFKA_BROKER["HOST"]
-    KAFKA_PORT = int(settings.KAFKA_BROKER["PORT"])
-    producer = None
+    help = 'MQTT to DB deamon'
 
     @sync_to_async
     def get_device(self, serial):
@@ -51,54 +47,40 @@ class Command(BaseCommand):
             return None
 
     @sync_to_async
-    def dispatch(self, message):
-        self.producer.send("telemetry", {"transport": "mqtt", "body": message})
+    def store_telemetry(self, device, payload):
+        Telemetry.objects.create(
+            device=device,
+            transport='mqtt',
+            clock=payload['clock'],
+            payload=payload['payload']
+        )
 
     async def mqtt_broker(self):
-        async with Client(self.MQTT_HOST, port=self.MQTT_PORT) as client:
+        async with Client(MQTT_HOST, port=MQTT_PORT) as client:
             # use shared subscription for HA/balancing
             await client.subscribe("$share/telemetry/#")
-            async with client.messages() as messages:
+            async with client.unfiltered_messages() as messages:
                 async for message in messages:
+                    payload = json.loads(message.payload.decode('utf-8'))
                     device = await self.get_device(message.topic)
                     if device is not None:
-                        message_body = json.loads(
-                            message.payload.decode("utf-8")
-                        )
-                        await self.dispatch(message_body)
+                        await self.store_telemetry(device, payload)
                     else:
                         self.stdout.write(
-                            self.style.ERROR("DEBUG: message discarded")
-                        )
+                            self.style.ERROR(
+                                'DEBUG: message discarded'))
 
     def handle(self, *args, **options):
         client = mqtt.Client()
         while True:
             try:
-                client.connect(self.MQTT_HOST, self.MQTT_PORT)
+                client.connect(MQTT_HOST, MQTT_PORT)
                 break
             except (socket.gaierror, ConnectionRefusedError):
                 self.stdout.write(
-                    self.style.WARNING("WARNING: MQTT broker not available")
-                )
+                    self.style.WARNING('WARNING: Broker not available'))
                 time.sleep(5)
 
-        while True:
-            try:
-                self.producer = KafkaProducer(
-                    bootstrap_servers="{}:{}".format(
-                        self.KAFKA_HOST, self.KAFKA_PORT
-                    ),
-                    value_serializer=lambda v: json.dumps(v).encode("utf-8"),
-                    retries=5,
-                )
-                break
-            except NoBrokersAvailable:
-                self.stdout.write(
-                    self.style.WARNING("WARNING: Kafka broker not available")
-                )
-                time.sleep(5)
-
-        self.stdout.write(self.style.SUCCESS("INFO: Brokers subscribed"))
+        self.stdout.write(self.style.SUCCESS('INFO: Broker subscribed'))
         client.disconnect()
         asyncio.run(self.mqtt_broker())

bite/telemetry/migrations/0001_initial.py

@@ -11,7 +11,7 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
-        ('dps', '0001_initial'),
+        ('api', '0001_initial'),
     ]
 
     operations = [
@@ -23,7 +23,7 @@ class Migration(migrations.Migration):
                 ('transport', models.CharField(choices=[('http', 'http'), ('mqtt', 'mqtt')], default='http', max_length=4)),
                 ('clock', models.IntegerField(null=True, validators=[django.core.validators.MinValueValidator(0)])),
                 ('payload', models.JSONField(validators=[telemetry.models.telemetry_validation])),
-                ('device', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='dps.device')),
+                ('device', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='api.device')),
             ],
             options={
                 'verbose_name_plural': 'Telemetry',

bite/telemetry/models.py

@@ -21,7 +21,7 @@ from django.db import models
 from django.core.validators import MinValueValidator
 from django.core.exceptions import ValidationError
 
-from dps.models import Device
+from api.models import Device
 
 
 def telemetry_validation(value):

bite/telemetry/serializers.py

@@ -18,7 +18,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from rest_framework import serializers
-from dps.models import Device
+from api.models import Device
 from telemetry.models import Telemetry
 
 

bite/telemetry/tests.py

@@ -19,7 +19,7 @@
 
 import json
 from django.test import TestCase, Client
-from dps.models import Device, WhiteList
+from api.models import Device, WhiteList
 
 
 class ApiTestCase(TestCase):

docker/django/Dockerfile

@@ -17,20 +17,20 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-FROM python:3.11-alpine AS builder
+FROM python:3.9-alpine AS builder
 RUN apk update && apk add gcc musl-dev postgresql-dev \
         && pip install psycopg2-binary
 
 # ---
 
-FROM python:3.11-alpine
+FROM python:3.9-alpine
 ENV PYTHONUNBUFFERED 1
 ENV DJANGO_SETTINGS_MODULE "bite.settings"
 
 RUN apk update && apk add --no-cache postgresql-libs \
-        && wget https://github.com/jwilder/dockerize/releases/download/v0.7.0/dockerize-alpine-linux-amd64-v0.7.0.tar.gz -qO- \
+        && wget https://github.com/jwilder/dockerize/releases/download/v0.6.1/dockerize-alpine-linux-amd64-v0.6.1.tar.gz -qO- \
         | tar -xz -C /usr/local/bin
-COPY --from=builder /usr/local/lib/python3.11/site-packages/ /usr/local/lib/python3.11/site-packages/
+COPY --from=builder /usr/local/lib/python3.9/site-packages/ /usr/local/lib/python3.9/site-packages/
 COPY --chown=1000:1000 requirements.txt /srv/app/bite/requirements.txt
 RUN pip3 install --no-cache-dir -r /srv/app/bite/requirements.txt
 

docker/docker-compose.dev.yml

@@ -36,13 +36,6 @@ services:
     ports:
         - "${CUSTOM_DOCKER_IP:-0.0.0.0}:8000:8000"
 
-  kafka:
-    environment:
-      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092,PLAINTEXT_HOST://localhost:29092
-      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
-    ports:
-        - "${CUSTOM_DOCKER_IP:-0.0.0.0}:29092:29092"
-
   data-migration:
     volumes:
       - ../bite:/srv/app/bite
@@ -51,10 +44,6 @@ services:
     volumes:
       - ../bite:/srv/app/bite
 
-  dispatcher:
-    volumes:
-      - ../bite:/srv/app/bite
-
-  handler:
+  mqtt-to-db:
     volumes:
       - ../bite:/srv/app/bite

docker/docker-compose.prod.yml

@@ -29,10 +29,6 @@ services:
     volumes:
       - ./django/production.py.sample:/srv/app/bite/bite/production.py
 
-  dispatcher:
-    volumes:
-      - ./django/production.py.sample:/srv/app/bite/bite/production.py
-
-  handler:
+  mqtt-to-db:
     volumes:
       - ./django/production.py.sample:/srv/app/bite/bite/production.py

docker/docker-compose.yml

@@ -62,28 +62,6 @@ services:
     ports:
       - "${CUSTOM_DOCKER_IP:-0.0.0.0}:1883:1883"
 
-  zookeeper:
-    image: confluentinc/cp-zookeeper:latest
-    networks:
-      - net
-    environment:
-      ZOOKEEPER_CLIENT_PORT: 2181
-      ZOOKEEPER_TICK_TIME: 2000
-
-  kafka:
-    image: confluentinc/cp-kafka:latest
-    depends_on:
-      - zookeeper
-    networks:
-      - net
-    environment:
-      KAFKA_BROKER_ID: 1
-      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
-      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092
-      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT
-      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
-      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
-
   ingress:
     <<: *service_default
     image: nginx:stable-alpine
@@ -126,21 +104,13 @@ services:
       - "staticdata:/srv/appdata/bite/static:U"  # REMOVE ':U' ON MOBY/DOCKER
     command: ["python3", "manage.py", "collectstatic", "--noinput"]
 
-  dispatcher:
+  mqtt-to-db:
     <<: *service_default
     image: daniviga/bite
-    command: ["python3", "manage.py", "dispatcher"]
-    networks:
-      - net
-    depends_on:
-      - broker
-
-  handler:
-    <<: *service_default
-    image: daniviga/bite
-    command: ["python3", "manage.py", "handler"]
+    command: ["python3", "manage.py", "mqtt-to-db"]
     networks:
       - net
     depends_on:
       - data-migration
       - timescale
+      - broker

docker/ntpd/Dockerfile

@@ -17,9 +17,9 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-FROM alpine:3.18
+FROM alpine:3.15
 
-RUN apk add --no-cache chrony && \
+RUN apk update && apk add chrony && \
     chown -R chrony:chrony /var/lib/chrony
 COPY ./chrony.conf /etc/chrony/chrony.conf
 

docker/simulator/Dockerfile

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-FROM python:3.11-alpine
+FROM python:3.9-alpine
 
 RUN pip3 install urllib3 paho-mqtt
 COPY ./device_simulator.py /opt/bite/device_simulator.py

docker/simulator/device_simulator.py

@@ -29,7 +29,7 @@ import argparse
 from time import sleep
 import paho.mqtt.publish as publish
 
-DEBUG = bool(os.environ.get("IOT_DEBUG", False))
+DEBUG = bool(os.environ.get('IOT_DEBUG', False))
 http = urllib3.PoolManager()
 
 
@@ -39,16 +39,15 @@ def post_json(endpoint, url, data):
     if DEBUG:
         print(json_data)
 
-    encoded_data = json_data.encode("utf8")
+    encoded_data = json_data.encode('utf8')
 
     while True:
         try:
             r = http.request(
-                "POST",
+                'POST',
                 endpoint + url,
                 body=encoded_data,
-                headers={"content-type": "application/json"},
-            )
+                headers={'content-type': 'application/json'})
             return r
         except urllib3.exceptions.MaxRetryError:
             pass
@@ -58,89 +57,74 @@ def post_json(endpoint, url, data):
 
 def publish_json(transport, endpoint, data):
     json_data = json.dumps(data)
-    serial = data["device"]
+    serial = data['device']
 
     if DEBUG:
         print(json_data)
 
-    encoded_data = json_data.encode("utf8")
+    encoded_data = json_data.encode('utf8')
 
     publish.single(
         topic=serial,
         payload=encoded_data,
-        hostname=endpoint.split(":")[0],
-        port=int(endpoint.split(":")[1]),
+        hostname=endpoint.split(':')[0],
+        port=int(endpoint.split(':')[1]),
         client_id=serial,
-        transport=("websockets" if transport == "ws" else "tcp"),
+        transport=('websockets' if transport == 'ws' else 'tcp'),
         # auth=auth FIXME
     )
 
 
 def main():
-    parser = argparse.ArgumentParser(description="IoT simulator oprions")
+    parser = argparse.ArgumentParser(
+        description='IoT simulator oprions')
 
-    parser.add_argument(
-        "-e",
-        "--endpoint",
-        default=os.environ.get("IOT_HTTP", "http://127.0.0.1:8000"),
-        help="IoT HTTP endpoint",
-    )
-    parser.add_argument(
-        "-m",
-        "--mqtt",
-        default=os.environ.get("IOT_MQTT", "127.0.0.1:1883"),
-        help="IoT MQTT endpoint",
-    )
-    parser.add_argument(
-        "-t",
-        "--transport",
-        choices=["mqtt", "ws", "http"],
-        default=os.environ.get("IOT_TL", "http"),
-        help="IoT transport layer",
-    )
-    parser.add_argument(
-        "-s",
-        "--serial",
-        default=os.environ.get("IOT_SERIAL"),
-        help="IoT device serial number",
-    )
-    parser.add_argument(
-        "-d",
-        "--delay",
-        metavar="s",
-        type=float,
-        default=os.environ.get("IOT_DELAY", 10),
-        help="Delay between requests",
-    )
+    parser.add_argument('-e', '--endpoint',
+                        default=os.environ.get('IOT_HTTP',
+                                               'http://127.0.0.1:8000'),
+                        help='IoT HTTP endpoint')
+    parser.add_argument('-m', '--mqtt',
+                        default=os.environ.get('IOT_MQTT',
+                                               '127.0.0.1:1883'),
+                        help='IoT MQTT endpoint')
+    parser.add_argument('-t', '--transport',
+                        choices=['mqtt', 'ws', 'http'],
+                        default=os.environ.get('IOT_TL', 'http'),
+                        help='IoT transport layer')
+    parser.add_argument('-s', '--serial',
+                        default=os.environ.get('IOT_SERIAL'),
+                        help='IoT device serial number')
+    parser.add_argument('-d', '--delay', metavar='s', type=int,
+                        default=os.environ.get('IOT_DELAY', 10),
+                        help='Delay between requests')
     args = parser.parse_args()
 
-    dps = "/dps/device/provision/"
-    telemetry = "/telemetry/"
+    subscribe = '/api/device/subscribe/'
+    telemetry = '/telemetry/'
 
     if args.serial is None:
-        args.serial = "".join(
-            random.choices(string.ascii_lowercase + string.digits, k=8)
-        )
+        args.serial = ''.join(
+            random.choices(string.ascii_lowercase + string.digits, k=8))
 
-    data = {"serial": args.serial}
-    post_json(args.endpoint, dps, data)
+    data = {'serial': args.serial}
+    post_json(args.endpoint, subscribe, data)
 
     while True:
         data = {
-            "device": args.serial,
-            "clock": int(datetime.datetime.now().timestamp()),
+            'device': args.serial,
+            'clock': int(datetime.datetime.now().timestamp()),
         }
         payload = {
-            "id": "device_simulator",
-            "light": random.randint(300, 500),
-            "temperature": {"celsius": round(random.uniform(20, 28), 1)},
+            'id': 'device_simulator',
+            'light': random.randint(300, 500),
+            'temperature': {
+                'celsius': round(random.uniform(20, 28), 1)}
         }
-        if args.transport == "http":
-            post_json(args.endpoint, telemetry, {**data, "payload": payload})
-        elif args.transport in ("mqtt", "ws"):
+        if args.transport == 'http':
+            post_json(args.endpoint, telemetry, {**data, 'payload': payload})
+        elif args.transport in ('mqtt', 'ws'):
             publish_json(
-                args.transport, args.mqtt, {**data, "payload": payload}
-            )
+                args.transport, args.mqtt, {**data, 'payload': payload})
         else:
             raise NotImplementedError
         sleep(args.delay)

docs/.badges/python.svg

@@ -1 +1 @@
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+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="93.0" height="20"><linearGradient id="smooth" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient><clipPath id="round"><rect width="93.0" height="20" rx="3" fill="#fff"/></clipPath><g clip-path="url(#round)"><rect width="65.5" height="20" fill="#555"/><rect x="65.5" width="27.5" height="20" fill="#007ec6"/><rect width="93.0" height="20" fill="url(#smooth)"/></g><g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="110"><image x="5" y="3" width="14" height="14" xlink:href="data:image/svg+xml;base64,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"/><text x="422.5" y="150" fill="#010101" fill-opacity=".3" transform="scale(0.1)" textLength="385.0" lengthAdjust="spacing">python</text><text x="422.5" y="140" transform="scale(0.1)" textLength="385.0" lengthAdjust="spacing">python</text><text x="782.5" y="150" fill="#010101" fill-opacity=".3" transform="scale(0.1)" textLength="175.0" lengthAdjust="spacing">3.9</text><text x="782.5" y="140" transform="scale(0.1)" textLength="175.0" lengthAdjust="spacing">3.9</text></g></svg>

esp32/rssiHall/rssiHall.ino

@@ -55,13 +55,13 @@ struct netConfig {
 } config;
 
 char* serial;
-const String dpsURL = "/dps/device/subscribe/";
+const String apiURL = "/api/device/subscribe/";
 const String telemetryURL = "/telemetry/";
 
 void setup(void) {
   Serial.begin(115200);
 
-  StaticJsonDocument<64> dps;
+  StaticJsonDocument<64> api;
 
   preferences.begin("iot");
   // Get the serial number from flash
@@ -117,8 +117,8 @@ void setup(void) {
   Serial.println("DEBUG: clock updated via NTP.");
 #endif
 
-  dps["serial"] = serial;
-  postData(config, dpsURL, dps);
+  api["serial"] = serial;
+  postData(config, apiURL, api);
 
   telemetry["device"] = serial;
   // payload["id"] = serverName;

requirements-dev.txt

@@ -4,4 +4,3 @@ ipython
 flake8
 pyinstrument
 django-debug-toolbar
-urllib3

requirements.txt

@@ -4,8 +4,7 @@ djangorestframework
 django-health-check
 psycopg2-binary
 paho-mqtt
-kafka-python
-aiomqtt
+asyncio-mqtt
 PyYAML
 uritemplate
 pygments