update project structure

- move agent to /agent
- change /beszel to /src
- update workflows and docker builds

agent/sensors.go

@@ -0,0 +1,198 @@
+package agent
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"path"
+	"runtime"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+
+	"github.com/henrygd/beszel/src/entities/system"
+
+	"github.com/shirou/gopsutil/v4/common"
+	"github.com/shirou/gopsutil/v4/sensors"
+)
+
+type SensorConfig struct {
+	context        context.Context
+	sensors        map[string]struct{}
+	primarySensor  string
+	isBlacklist    bool
+	hasWildcards   bool
+	skipCollection bool
+}
+
+func (a *Agent) newSensorConfig() *SensorConfig {
+	primarySensor, _ := GetEnv("PRIMARY_SENSOR")
+	sysSensors, _ := GetEnv("SYS_SENSORS")
+	sensorsEnvVal, sensorsSet := GetEnv("SENSORS")
+	skipCollection := sensorsSet && sensorsEnvVal == ""
+
+	return a.newSensorConfigWithEnv(primarySensor, sysSensors, sensorsEnvVal, skipCollection)
+}
+
+// Matches sensors.TemperaturesWithContext to allow for panic recovery (gopsutil/issues/1832)
+type getTempsFn func(ctx context.Context) ([]sensors.TemperatureStat, error)
+
+// newSensorConfigWithEnv creates a SensorConfig with the provided environment variables
+// sensorsSet indicates if the SENSORS environment variable was explicitly set (even to empty string)
+func (a *Agent) newSensorConfigWithEnv(primarySensor, sysSensors, sensorsEnvVal string, skipCollection bool) *SensorConfig {
+	config := &SensorConfig{
+		context:        context.Background(),
+		primarySensor:  primarySensor,
+		skipCollection: skipCollection,
+		sensors:        make(map[string]struct{}),
+	}
+
+	// Set sensors context (allows overriding sys location for sensors)
+	if sysSensors != "" {
+		slog.Info("SYS_SENSORS", "path", sysSensors)
+		config.context = context.WithValue(config.context,
+			common.EnvKey, common.EnvMap{common.HostSysEnvKey: sysSensors},
+		)
+	}
+
+	// handle blacklist
+	if strings.HasPrefix(sensorsEnvVal, "-") {
+		config.isBlacklist = true
+		sensorsEnvVal = sensorsEnvVal[1:]
+	}
+
+	for sensor := range strings.SplitSeq(sensorsEnvVal, ",") {
+		sensor = strings.TrimSpace(sensor)
+		if sensor != "" {
+			config.sensors[sensor] = struct{}{}
+			if strings.Contains(sensor, "*") {
+				config.hasWildcards = true
+			}
+		}
+	}
+
+	return config
+}
+
+// updateTemperatures updates the agent with the latest sensor temperatures
+func (a *Agent) updateTemperatures(systemStats *system.Stats) {
+	// skip if sensors whitelist is set to empty string
+	if a.sensorConfig.skipCollection {
+		slog.Debug("Skipping temperature collection")
+		return
+	}
+
+	// reset high temp
+	a.systemInfo.DashboardTemp = 0
+
+	temps, err := a.getTempsWithPanicRecovery(getSensorTemps)
+	if err != nil {
+		// retry once on panic (gopsutil/issues/1832)
+		temps, err = a.getTempsWithPanicRecovery(getSensorTemps)
+		if err != nil {
+			slog.Warn("Error updating temperatures", "err", err)
+			if len(systemStats.Temperatures) > 0 {
+				systemStats.Temperatures = make(map[string]float64)
+			}
+			return
+		}
+	}
+	slog.Debug("Temperature", "sensors", temps)
+
+	// return if no sensors
+	if len(temps) == 0 {
+		return
+	}
+
+	systemStats.Temperatures = make(map[string]float64, len(temps))
+	for i, sensor := range temps {
+		// check for malformed strings on darwin (gopsutil/issues/1832)
+		if runtime.GOOS == "darwin" && !utf8.ValidString(sensor.SensorKey) {
+			continue
+		}
+
+		// scale temperature
+		if sensor.Temperature != 0 && sensor.Temperature < 1 {
+			sensor.Temperature = scaleTemperature(sensor.Temperature)
+		}
+		// skip if temperature is unreasonable
+		if sensor.Temperature <= 0 || sensor.Temperature >= 200 {
+			continue
+		}
+		sensorName := sensor.SensorKey
+		if _, ok := systemStats.Temperatures[sensorName]; ok {
+			// if key already exists, append int to key
+			sensorName = sensorName + "_" + strconv.Itoa(i)
+		}
+		// skip if not in whitelist or blacklist
+		if !isValidSensor(sensorName, a.sensorConfig) {
+			continue
+		}
+		// set dashboard temperature
+		switch a.sensorConfig.primarySensor {
+		case "":
+			a.systemInfo.DashboardTemp = max(a.systemInfo.DashboardTemp, sensor.Temperature)
+		case sensorName:
+			a.systemInfo.DashboardTemp = sensor.Temperature
+		}
+		systemStats.Temperatures[sensorName] = twoDecimals(sensor.Temperature)
+	}
+}
+
+// getTempsWithPanicRecovery wraps sensors.TemperaturesWithContext to recover from panics (gopsutil/issues/1832)
+func (a *Agent) getTempsWithPanicRecovery(getTemps getTempsFn) (temps []sensors.TemperatureStat, err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			err = fmt.Errorf("panic: %v", r)
+		}
+	}()
+	// get sensor data (error ignored intentionally as it may be only with one sensor)
+	temps, _ = getTemps(a.sensorConfig.context)
+	return
+}
+
+// isValidSensor checks if a sensor is valid based on the sensor name and the sensor config
+func isValidSensor(sensorName string, config *SensorConfig) bool {
+	// if no sensors configured, everything is valid
+	if len(config.sensors) == 0 {
+		return true
+	}
+
+	// Exact match - return true if whitelist, false if blacklist
+	if _, exactMatch := config.sensors[sensorName]; exactMatch {
+		return !config.isBlacklist
+	}
+
+	// If no wildcards, return true if blacklist, false if whitelist
+	if !config.hasWildcards {
+		return config.isBlacklist
+	}
+
+	// Check for wildcard patterns
+	for pattern := range config.sensors {
+		if !strings.Contains(pattern, "*") {
+			continue
+		}
+		if match, _ := path.Match(pattern, sensorName); match {
+			return !config.isBlacklist
+		}
+	}
+
+	return config.isBlacklist
+}
+
+// scaleTemperature scales temperatures in fractional values to reasonable Celsius values
+func scaleTemperature(temp float64) float64 {
+	if temp > 1 {
+		return temp
+	}
+	scaled100 := temp * 100
+	scaled1000 := temp * 1000
+
+	if scaled100 >= 15 && scaled100 <= 95 {
+		return scaled100
+	} else if scaled1000 >= 15 && scaled1000 <= 95 {
+		return scaled1000
+	}
+	return scaled100
+}