Event Bus: facilitates the firing and listening of events -- the beating heart of Home Assistant.
State Machine: keeps track of the states of things and fires a state_changed event when a state has been changed.
Service Registry: listens on the event bus for call_service events and allows other code to register services.
Timer: sends a time_changed event every 1 second on the event bus.
比如，light.hue组件负责与飞利浦HUE智能灯的互动（感知与设置其当前状态）。
比如，camera.mjpeg组件负责获得摄像头的标准MJPEG视频流。
比如，sensor.yr组件负责与yr.no云服务通讯，获得天气信息。
比如，http组件负责对外提供的http协议服务。
比如，frontend组件，在http组件的基础上，负责与浏览器的交互。
比如，ifttt组件，负责与INTERNET上另一个大脑（IFTTT）的通讯与互动。
"matter": {
"name": "Matter (BETA)",
"integration_type": "hub",
"config_flow": true,
"iot_class": "local_push"
},
"mazda": {
"name": "Mazda Connected Services",
"integration_type": "hub",
"config_flow": true,
"iot_class": "cloud_polling"
},
tree -L 3 --dirsfirst
.Server software
Raspberry Pi 3B
└── .Debain 11 OS
│ ├──Python -> Python Version 3.9.2
│ │ ├──Python virtual environment
│ │ │ ├── Home Assistant Core 2022.3.0
│ ├── /home/homeassistant/.homeassistant
│ │ ├──/.storage -> /home/homeassistant/.storage
│ │ │ ├── homekit_controller-entity-map.json
│ │ │ ├── homekit_controller-entity-map.json
│ │ │ ├── homekit_controller-entity-map.json
│ │ │ ├── homekit_controller-entity-map.json
│ │ │ ├── homekit_controller-entity-map.json
│ │ │ └── repairs.issue_registry.json
│ │ ├── /.HA_VERSION - 2023.9.3
│ │ ├── /configuration.yaml -
│ │ ├── /automations.yaml -
│ │ ├── /scenes.yaml
│ │ ├── /scripts.yaml
│ │ ├── /secrets.yaml
│ │ ├── /.Storage
│ │ ├── /.Media
│ │ ├── /tts/
│ │ ├── /deps/
│ │ ├── /blueprints/
│ │ └── /.homeassistant/home-assistant_v2.db
│ ├── /srv/homeassistant20221103
│ └── Python
│ └── Python virtual environment
├── service -->/etc/systemd/system/[email protected]
├── ssh server
├── nginx with let’s
├── frp
└── git /home/homeassistant/.homeassistant/.gitignore
Make Python virtual environment + Home Assistant Core run automatically
一个是配置目录，有configuration.yaml(配置文件)、.storage(组件信息存储文件夹)、home-assistant.log（程序运行日志）等；
一个是安装目录，放置有程序核心代码及官方组件代码（components目录）
.Server hardware
光猫
└── .router wifi - TPlink WTA301
│ ├── mijia米家吸顶灯
│ │ ├── yeelink.light.ceiling21 米家客厅吸顶灯 Light by xiaomi miot auto
│ │ ├── turn_light_off_lounge.yaml
│ │ ├── turn_light_on_bedroom.yaml
│ │ └── home-assistant_v2.db
│ ├── Yeelight wifi吸顶灯
│ │ ├── yeelink.light.ceiling26 米家客厅吸顶灯 Light by xiaomi miot auto
│ │ ├── turn_light_off_lounge.yaml
│ │ ├── turn_light_on_bedroom.yaml
│ │ └── Yeelight color 1S
│ ├── broadlink wifi灯泡
│ └── philips wifi灯泡
│ └── Yeelight color 1S
├── Aqara M1s gateway （zigbee 3.0）
│ ├── montion sensors
│ │ ├── Aqara人体传感器E1
│ │ ├── turn_light_off_lounge.yaml
│ │ ├── turn_light_on_bedroom.yaml
│ │ └── home-assistant_v2.db
│ ├── say_hello.yaml
│ └── blubs
│ └── Aqara智能灯泡T1
├── 米家中枢网关gateway （ble mesh ）
│ ├── slave gateway(mijia)
│ │ ├── mijia play pro
│ │ ├── mijia multi mode gateway 1
│ │ ├── mijia multi mode gateway 2
│ │ └──
│ ├── slave gateway(Yeelight)
│ │ ├── Yeelight mesh pro
│ │ ├──
│ │ ├──
│ │ └── Yeelight mesh gateway
│ ├── slave gateway(aqara)
│ │ ├──
│ │ ├──
│ │ ├──
│ │ └── no
│ ├──
│ └── sensors
│ └── mijia motion sensor2
├── Yeelight
│ ├── yeelight devices （wifi）
│ │ ├── yeelight wifi devices
│ │ ├── mijia multi mode gateway 1
│ │ ├── mijia multi mode gateway 2
│ │ └──
│ ├── yeelight devices（ble mesh）
│ │ ├── Yeelight mesh pro
│ │ ├──
│ │ ├──
│ │ └── Yeelight mesh gateway
│ ├── Yeelight pro
│ │ ├──
│ │ ├──
│ │ ├──
│ │ └── no
│ ├──
│ └── sensors
│ └── mijia motion sensor2
├── Raspberry Pi 3B - Home Assistant Core 2022.3.0
└── .router wifi - TPlink WTA301
│ ├── wifi
│ │ ├── mobile
│ │ ├──
│ │ ├──
│ │ └──
│ └── line
│ └── windows 10
└── git
Make Python virtual environment + Home Assistant Core run automatically
Client
mobile for android
└── .android OS
├── app
│ ├── home assistant app
│ │ ├── turn_light_off_bedroom.yaml
│ │ ├── turn_light_off_lounge.yaml
│ │ ├── turn_light_on_bedroom.yaml
│ │ └── turn_light_on_lounge.yaml
│ ├── xftp7
│ └── sensors
│ └── react.yaml
├── community between server
├── frp
└── configuration.yaml (not included)
