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8489dc4345
With the advent of Podman 2.0.0 we crossed the magical barrier of go modules. While we were able to continue importing all packages inside of the project, the project could not be vendored anymore from the outside. Move the go module to new major version and change all imports to `github.com/containers/libpod/v2`. The renaming of the imports was done via `gomove` [1]. [1] https://github.com/KSubedi/gomove Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
67 lines
1.6 KiB
Go
67 lines
1.6 KiB
Go
package hooks
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import (
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"context"
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current "github.com/containers/libpod/v2/pkg/hooks/1.0.0"
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"github.com/fsnotify/fsnotify"
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"github.com/sirupsen/logrus"
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)
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// Monitor dynamically monitors hook directories for additions,
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// updates, and removals.
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//
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// This function writes two empty structs to the sync channel: the
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// first is written after the watchers are established and the second
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// when this function exits. The expected usage is:
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//
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// ctx, cancel := context.WithCancel(context.Background())
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// sync := make(chan error, 2)
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// go m.Monitor(ctx, sync)
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// err := <-sync // block until writers are established
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// if err != nil {
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// return err // failed to establish watchers
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// }
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// // do stuff
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// cancel()
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// err = <-sync // block until monitor finishes
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func (m *Manager) Monitor(ctx context.Context, sync chan<- error) {
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watcher, err := fsnotify.NewWatcher()
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if err != nil {
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sync <- err
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return
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}
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defer watcher.Close()
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for _, dir := range m.directories {
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err = watcher.Add(dir)
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if err != nil {
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logrus.Errorf("failed to watch %q for hooks", dir)
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sync <- err
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return
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}
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logrus.Debugf("monitoring %q for hooks", dir)
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}
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sync <- nil
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for {
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select {
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case event := <-watcher.Events:
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m.hooks = make(map[string]*current.Hook)
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for _, dir := range m.directories {
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err = ReadDir(dir, m.extensionStages, m.hooks)
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if err != nil {
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logrus.Errorf("failed loading hooks for %s: %v", event.Name, err)
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}
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}
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case <-ctx.Done():
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err = ctx.Err()
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logrus.Debugf("hook monitoring canceled: %v", err)
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sync <- err
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close(sync)
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return
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}
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}
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}
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