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main_callhook.go
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/
main_callhook.go
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package main
import (
"fmt"
"os"
"time"
"github.com/lxc/lxd/client"
)
func cmdCallHook(args []string) error {
// Parse the arguments
if len(args) < 4 {
return fmt.Errorf("Invalid arguments")
}
path := args[1]
id := args[2]
state := args[3]
target := ""
// Connect to LXD
c, err := lxd.ConnectLXDUnix(fmt.Sprintf("%s/unix.socket", path), nil)
if err != nil {
return err
}
// Prepare the request URL
url := fmt.Sprintf("/internal/containers/%s/on%s", id, state)
if state == "stop" {
target = os.Getenv("LXC_TARGET")
if target == "" {
target = "unknown"
}
url = fmt.Sprintf("%s?target=%s", url, target)
}
// Setup the request
hook := make(chan error, 1)
go func() {
_, _, err := c.RawQuery("GET", url, nil, "")
if err != nil {
hook <- err
return
}
hook <- nil
}()
// Handle the timeout
select {
case err := <-hook:
if err != nil {
return err
}
break
case <-time.After(30 * time.Second):
return fmt.Errorf("Hook didn't finish within 30s")
}
if target == "reboot" {
return fmt.Errorf("Reboot must be handled by LXD.")
}
return nil
}