Initial version of weather microservice

microservices/weather/src/main.rs

@@ -0,0 +1,47 @@
+mod fetch;
+mod input;
+mod mode;
+mod write;
+
+use anyhow::Result;
+use config::Config;
+use log::info;
+use chrono::Utc;
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    env_logger::init();
+
+    let settings: input::Input = fetch_settings()?;
+
+    match settings.program_mode
+    {
+        mode::Mode::ReadWeatherData =>  read_weather_data(&settings).await?
+    };
+
+    Ok(())
+}
+
+async fn read_weather_data(settings: &input::Input) -> Result<()> {
+    info!("Start fetching weather data...");
+    let result = fetch::fetch_weather_data(&settings.weather_api_base_url, &settings.latitude, &settings.longitude, &settings.weather_api_key, &Utc::now()).await?;
+
+    info!("Start writing weather data...");
+    let map = write::WeatherReading {
+        wind_speed: result.wind.speed,
+        time: Utc::now(),
+    };
+    write::write_weather_data(map, &settings.influx_db_base_url, "homeassistant", &settings.influx_db_token).await?;
+    Ok(())
+}
+
+fn fetch_settings() -> Result<input::Input, config::ConfigError> {
+    let settings = Config::builder()
+        // Add in `./Settings.toml`
+        .add_source(config::File::with_name("./Settings").required(false))
+        .add_source(config::Environment::with_prefix("weather"))
+        .build()
+        .unwrap();
+
+    settings.try_deserialize::<input::Input>()
+}