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| 1 | +//! Temperature sensor collection from /sys/class/hwmon |
| 2 | + |
| 3 | +use crate::error::Result; |
| 4 | +use gartop_ipc::{TempSensor, TempStats}; |
| 5 | +use std::fs; |
| 6 | +use std::path::Path; |
| 7 | +use std::time::{SystemTime, UNIX_EPOCH}; |
| 8 | + |
| 9 | +/// Temperature sensor collector. |
| 10 | +pub struct TempCollector; |
| 11 | + |
| 12 | +impl TempCollector { |
| 13 | + /// Create a new temperature collector. |
| 14 | + pub fn new() -> Result<Self> { |
| 15 | + Ok(Self) |
| 16 | + } |
| 17 | + |
| 18 | + /// Collect current temperature readings from all sensors. |
| 19 | + pub fn collect(&mut self) -> Result<TempStats> { |
| 20 | + let mut sensors = Vec::new(); |
| 21 | + let hwmon_path = Path::new("/sys/class/hwmon"); |
| 22 | + |
| 23 | + if hwmon_path.exists() { |
| 24 | + if let Ok(entries) = fs::read_dir(hwmon_path) { |
| 25 | + for entry in entries.flatten() { |
| 26 | + let hwmon_dir = entry.path(); |
| 27 | + if let Some(device_sensors) = Self::read_hwmon_device(&hwmon_dir) { |
| 28 | + sensors.extend(device_sensors); |
| 29 | + } |
| 30 | + } |
| 31 | + } |
| 32 | + } |
| 33 | + |
| 34 | + let timestamp = SystemTime::now() |
| 35 | + .duration_since(UNIX_EPOCH) |
| 36 | + .map(|d| d.as_millis() as u64) |
| 37 | + .unwrap_or(0); |
| 38 | + |
| 39 | + Ok(TempStats { sensors, timestamp }) |
| 40 | + } |
| 41 | + |
| 42 | + /// Read all temperature sensors from a hwmon device directory. |
| 43 | + fn read_hwmon_device(hwmon_dir: &Path) -> Option<Vec<TempSensor>> { |
| 44 | + let device_name = Self::read_file(hwmon_dir.join("name")).unwrap_or_default(); |
| 45 | + let mut sensors = Vec::new(); |
| 46 | + |
| 47 | + // Find all temp*_input files |
| 48 | + if let Ok(entries) = fs::read_dir(hwmon_dir) { |
| 49 | + for entry in entries.flatten() { |
| 50 | + let filename = entry.file_name(); |
| 51 | + let filename_str = filename.to_string_lossy(); |
| 52 | + |
| 53 | + if filename_str.starts_with("temp") && filename_str.ends_with("_input") { |
| 54 | + // Extract sensor index (e.g., "temp1_input" -> "1") |
| 55 | + let index = filename_str |
| 56 | + .strip_prefix("temp") |
| 57 | + .and_then(|s| s.strip_suffix("_input")) |
| 58 | + .unwrap_or(""); |
| 59 | + |
| 60 | + if let Some(sensor) = Self::read_sensor(hwmon_dir, index, &device_name) { |
| 61 | + sensors.push(sensor); |
| 62 | + } |
| 63 | + } |
| 64 | + } |
| 65 | + } |
| 66 | + |
| 67 | + if sensors.is_empty() { |
| 68 | + None |
| 69 | + } else { |
| 70 | + Some(sensors) |
| 71 | + } |
| 72 | + } |
| 73 | + |
| 74 | + /// Read a single temperature sensor. |
| 75 | + fn read_sensor(hwmon_dir: &Path, index: &str, device_name: &str) -> Option<TempSensor> { |
| 76 | + // Read temperature (millidegrees Celsius) |
| 77 | + let temp_path = hwmon_dir.join(format!("temp{}_input", index)); |
| 78 | + let temp_millidegrees: i64 = Self::read_file(&temp_path)?.trim().parse().ok()?; |
| 79 | + let temp_celsius = temp_millidegrees as f64 / 1000.0; |
| 80 | + |
| 81 | + // Read label (optional) |
| 82 | + let label_path = hwmon_dir.join(format!("temp{}_label", index)); |
| 83 | + let label = Self::read_file(label_path) |
| 84 | + .map(|s| s.trim().to_string()) |
| 85 | + .unwrap_or_else(|| format!("temp{}", index)); |
| 86 | + |
| 87 | + // Read critical threshold (optional, millidegrees) |
| 88 | + let crit_path = hwmon_dir.join(format!("temp{}_crit", index)); |
| 89 | + let critical = Self::read_file(crit_path) |
| 90 | + .and_then(|s| s.trim().parse::<i64>().ok()) |
| 91 | + .map(|m| m as f64 / 1000.0); |
| 92 | + |
| 93 | + // Read high threshold (optional, millidegrees) |
| 94 | + let high_path = hwmon_dir.join(format!("temp{}_max", index)); |
| 95 | + let high = Self::read_file(high_path) |
| 96 | + .and_then(|s| s.trim().parse::<i64>().ok()) |
| 97 | + .map(|m| m as f64 / 1000.0); |
| 98 | + |
| 99 | + Some(TempSensor { |
| 100 | + label, |
| 101 | + device: device_name.to_string(), |
| 102 | + temp_celsius, |
| 103 | + critical, |
| 104 | + high, |
| 105 | + }) |
| 106 | + } |
| 107 | + |
| 108 | + /// Read a file to string, returning None on error. |
| 109 | + fn read_file<P: AsRef<Path>>(path: P) -> Option<String> { |
| 110 | + fs::read_to_string(path).ok() |
| 111 | + } |
| 112 | +} |
| 113 | + |
| 114 | +impl Default for TempCollector { |
| 115 | + fn default() -> Self { |
| 116 | + Self |
| 117 | + } |
| 118 | +} |
