83 lines
1.8 KiB
Go
83 lines
1.8 KiB
Go
package main
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import (
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"log"
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"os/exec"
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"time"
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"github.com/dietsche/rfsnotify"
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"git.kemonine.info/PiFrame/config"
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"git.kemonine.info/PiFrame/watchdog"
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)
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const (
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CMD_SYSTEMCTL = "/usr/bin/systemctl"
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TIMEOUT = 5 * time.Second
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)
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func main() {
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// Load the config file
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pfConfig, configFileProvider := config.LoadConfig(false)
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// Watch for config changes and re-load config if needed
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configFileProvider.Watch(func(event interface{}, err error) {
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if err != nil {
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log.Printf("Error setting up watch of config : %s", err)
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return
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}
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// Bail on slideshow if there is a config change so it restarts with updated config
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log.Fatalf("Config file changed! Exiting!")
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})
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PATH_PICTURES := pfConfig.String(config.CONFIG_KEY_ALBUMS_ROOT)
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// Create watchdog timer that restarts pf-ui.service on timeout
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watchdog := watchdog.New(TIMEOUT, func() {
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err := exec.Command(CMD_SYSTEMCTL, "restart", "pf-ui.service").Run()
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if err != nil {
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log.Fatalf("Error running %s : %s", CMD_SYSTEMCTL, err)
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}
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})
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watchdog.DeferredStart()
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// Create fswatcher
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watcher, err := rfsnotify.NewWatcher()
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if err != nil {
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log.Fatal("Error setting up rfsnotify")
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}
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// Ensure we clean stuff up no matter what
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defer watcher.Close()
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// Setup goroutine and listen for events
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done := make(chan bool)
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go func() {
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for {
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select {
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case _, ok := <-watcher.Events:
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if !ok {
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return
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}
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// [Re]Start timer to restart slideshow after the fs events die down
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watchdog.Kick()
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case err, ok := <-watcher.Errors:
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if !ok {
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return
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}
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log.Println("Error: ", err)
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}
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}
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}()
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// Setup paths to watch
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err = watcher.AddRecursive(PATH_PICTURES)
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if err != nil {
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log.Fatalf("Error setting up recursive watch of %s", PATH_PICTURES)
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}
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// Drain done channel...
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<-done
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}
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