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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 | +} |
