Browse Source

Implement the watcher correctly

master
Aaron Fischer 5 years ago
parent
commit
57a8200a65
  1. 26
      agent.go

26
agent.go

@ -1,7 +1,6 @@
package main
import (
"fmt"
"log"
"os"
"path"
@ -9,6 +8,12 @@ import (
"github.com/fsnotify/fsnotify"
)
func stop() {
log.Println("Have a nice day.")
// TODO: Make the error code optional (as a parameter)
os.Exit(1)
}
func watchForConfigChanges() {
watcher, err := fsnotify.NewWatcher()
if err != nil {
@ -21,12 +26,22 @@ func watchForConfigChanges() {
for {
select {
case event := <-watcher.Events:
log.Println("event: ", event)
// The file is changed. This is the only event we are interested
// in. If the file is renamed, removed or something else, we drop
// an error to the user.
if event.Op&fsnotify.Write == fsnotify.Write {
log.Println("modified file:", event.Name)
log.Println("Reload the config file ...")
}
if event.Op&fsnotify.Rename == fsnotify.Rename ||
event.Op&fsnotify.Remove == fsnotify.Remove {
log.Println("The 'keymap.conf' configuration file is renamed or removed. We cant do any further changes without the config file. So create the file or rename it back and restart the agent.")
stop()
}
case err := <-watcher.Errors:
log.Println("error:", err)
log.Println("We have the following problem with the 'keymap.conf' configuration file: ", err)
log.Println("Try the fix this problem by yourself and restart the agent.")
stop()
}
}
}()
@ -37,7 +52,6 @@ func watchForConfigChanges() {
// places where windows will put it).
config_path, err := os.Getwd()
config_file := path.Join(config_path, "keymap.conf")
err = watcher.Add(config_file)
if err != nil {
log.Fatal("Can't find the 'keymap.conf' configuration file. Please create one.")
@ -46,6 +60,6 @@ func watchForConfigChanges() {
}
func main() {
fmt.Printf("Ready\n")
watchForConfigChanges()
stop()
}