wrap into workspace

smart-house/house/src/bin/thermometer_mock.rs

@@ -0,0 +1,53 @@
+//! Имитатор термометра
+
+use rand::prelude::*;
+use std::io::Read;
+use std::net::{IpAddr, SocketAddr};
+use std::str::FromStr;
+use std::sync::Arc;
+use std::time::Duration;
+
+struct Params {
+    addr: SocketAddr,
+    interval: Duration,
+}
+
+const CONFIG_FILE: &str = "thermometer_mock.cfg";
+
+fn read_parameters_from_file() -> Result<Params, std::io::Error> {
+    let mut file = std::fs::File::open(CONFIG_FILE)?;
+    let mut content = String::new();
+    file.read_to_string(&mut content)?;
+    let lines = content.split("\n").collect::<Vec<&str>>();
+    let addr = lines
+        .first()
+        .map(|v| SocketAddr::from_str(v))
+        .ok_or(std::io::Error::other("no address found in config file"))?
+        .map_err(std::io::Error::other)?;
+    let interval = lines
+        .get(1)
+        .map(|v| v.parse::<u64>())
+        .ok_or(std::io::Error::other("no interval found in config file"))?
+        .map(Duration::from_millis)
+        .map_err(std::io::Error::other)?;
+    Ok(Params { addr, interval })
+}
+
+fn generate_temperature() -> f32 {
+    rand::rng().random_range(18.0..23.0)
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let params = read_parameters_from_file()?;
+    let rt = tokio::runtime::Builder::new_current_thread().enable_all().build()?;
+    rt.block_on(async move {
+        let socket = Arc::new(tokio::net::UdpSocket::bind(SocketAddr::new(IpAddr::from([127, 0, 0, 1]), 10003)).await?);
+        let mut interval = tokio::time::interval(params.interval);
+        loop {
+            interval.tick().await;
+            let new_temperature = generate_temperature();
+            let data = new_temperature.to_le_bytes();
+            socket.send_to(&data, &params.addr).await?;
+        }
+    })
+}