mirror of
https://github.com/containers/podman.git
synced 2025-11-04 08:56:05 +08:00
1c4e6d8624
Remove ERROR: Error stutter from logrus messages also. [ NO TESTS NEEDED] This is just code cleanup. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
67 lines
1.6 KiB
Go
67 lines
1.6 KiB
Go
package hooks
|
|
|
|
import (
|
|
"context"
|
|
|
|
current "github.com/containers/podman/v3/pkg/hooks/1.0.0"
|
|
"github.com/fsnotify/fsnotify"
|
|
"github.com/sirupsen/logrus"
|
|
)
|
|
|
|
// Monitor dynamically monitors hook directories for additions,
|
|
// updates, and removals.
|
|
//
|
|
// This function writes two empty structs to the sync channel: the
|
|
// first is written after the watchers are established and the second
|
|
// when this function exits. The expected usage is:
|
|
//
|
|
// ctx, cancel := context.WithCancel(context.Background())
|
|
// sync := make(chan error, 2)
|
|
// go m.Monitor(ctx, sync)
|
|
// err := <-sync // block until writers are established
|
|
// if err != nil {
|
|
// return err // failed to establish watchers
|
|
// }
|
|
// // do stuff
|
|
// cancel()
|
|
// err = <-sync // block until monitor finishes
|
|
func (m *Manager) Monitor(ctx context.Context, sync chan<- error) {
|
|
watcher, err := fsnotify.NewWatcher()
|
|
if err != nil {
|
|
sync <- err
|
|
return
|
|
}
|
|
defer watcher.Close()
|
|
|
|
for _, dir := range m.directories {
|
|
err = watcher.Add(dir)
|
|
if err != nil {
|
|
logrus.Errorf("Failed to watch %q for hooks", dir)
|
|
sync <- err
|
|
return
|
|
}
|
|
logrus.Debugf("monitoring %q for hooks", dir)
|
|
}
|
|
|
|
sync <- nil
|
|
|
|
for {
|
|
select {
|
|
case event := <-watcher.Events:
|
|
m.hooks = make(map[string]*current.Hook)
|
|
for _, dir := range m.directories {
|
|
err = ReadDir(dir, m.extensionStages, m.hooks)
|
|
if err != nil {
|
|
logrus.Errorf("Failed loading hooks for %s: %v", event.Name, err)
|
|
}
|
|
}
|
|
case <-ctx.Done():
|
|
err = ctx.Err()
|
|
logrus.Debugf("hook monitoring canceled: %v", err)
|
|
sync <- err
|
|
close(sync)
|
|
return
|
|
}
|
|
}
|
|
}
|