PKGBUILD/pkg/daemon/daemon.go

86 lines
2.4 KiB
Go

package daemon
import (
"fmt"
"log"
"os"
"os/signal"
"syscall"
"time"
"github.com/go-flucky/flucky/pkg/config"
"github.com/go-flucky/flucky/pkg/logfile"
"github.com/go-flucky/flucky/pkg/rgbled"
"github.com/go-flucky/flucky/pkg/sensor"
"github.com/go-flucky/flucky/pkg/types"
)
// Start the daemon
func Start(cnf *config.Configuration, cleanCacheIntervall time.Duration, compression bool) error {
ticker := time.Tick(cleanCacheIntervall)
interrupt := make(chan os.Signal, 1)
signal.Notify(interrupt, os.Interrupt, os.Kill, syscall.SIGTERM)
errorChannel := make(chan error, 0)
//humidityChannel := make(chan *types.Humidity, 0)
temperatureChannel := make(chan *types.Temperature, 0)
// go sensor.ReadHumiditiesContinuously(cnf.GetHumiditySensors(config.ENABLED), humidityChannel, errorChannel)
go sensor.ReadTemperaturesContinuously(cnf.GetTemperatureSensors(config.ENABLED), temperatureChannel, errorChannel)
temperatures := make([]*types.Temperature, 0)
rgbLEDs := cnf.GetRGBLEDs(config.ENABLED)
err := rgbled.Green(rgbLEDs)
if err != nil {
return fmt.Errorf("Can not turn on blue info light: %v", err)
}
for {
select {
case <-ticker:
err := rgbled.Blue(rgbLEDs)
if err != nil {
return fmt.Errorf("Can not turn on yellow info light: %v", err)
}
log.Printf("Write measured values into logfile")
log.Printf("%v new measured temperature values", len(temperatures))
err = logfile.WriteTemperatures(temperatures, cnf.Device.TemperatureLogfile, compression)
if err != nil {
return fmt.Errorf("Can not save temperatures: %v", err)
}
temperatures = make([]*types.Temperature, 0)
err = rgbled.Green(rgbLEDs)
if err != nil {
return fmt.Errorf("Can not turn on green info light: %v", err)
}
case temperature, more := <-temperatureChannel:
if more {
temperatures = append(temperatures, temperature)
} else {
log.Printf("Temperature Channel closed. Write remaining values into the logfile")
err := logfile.WriteTemperatures(temperatures, cnf.Device.TemperatureLogfile, compression)
if err != nil {
return fmt.Errorf("Can not save temperatures: %v", err)
}
}
case killSignal := <-interrupt:
err := rgbled.Red(rgbLEDs)
if err != nil {
return fmt.Errorf("Can not turn on info light: %v", err)
}
//close(humidityChannel)
close(temperatureChannel)
return fmt.Errorf("Daemon was interruped by system signal %v", killSignal)
}
}
}