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authorBen Burwell <ben@benburwell.com>2019-07-16 13:53:33 -0400
committerDrew DeVault <sir@cmpwn.com>2019-07-17 17:29:11 -0400
commit6473848d87de099b31812f20c7eb181d5c0c3c51 (patch)
treeda24e6f265cb1b01463e7538c7bdb20ff9e9e389 /worker/maildir/worker.go
parentdfc048fe285939d9de3b5753f723c935d042cc2b (diff)
downloadaerc-6473848d87de099b31812f20c7eb181d5c0c3c51.tar.gz
maildir: Watch for new messages
When a directory is opened, start watching its "new" subdirectory for incoming messages using the fsnotify library. When creation events are detected, run the Unseen routine to move the message from new to cur and add new UIDs to the store, updating the UI's list of directory contents as we go.
Diffstat (limited to 'worker/maildir/worker.go')
-rw-r--r--worker/maildir/worker.go81
1 files changed, 68 insertions, 13 deletions
diff --git a/worker/maildir/worker.go b/worker/maildir/worker.go
index a5416cc6..1e68a2e6 100644
--- a/worker/maildir/worker.go
+++ b/worker/maildir/worker.go
@@ -8,6 +8,7 @@ import (
"path/filepath"
"github.com/emersion/go-maildir"
+ "github.com/fsnotify/fsnotify"
"git.sr.ht/~sircmpwn/aerc/models"
"git.sr.ht/~sircmpwn/aerc/worker/types"
@@ -20,31 +21,68 @@ type Worker struct {
c *Container
selected *maildir.Dir
worker *types.Worker
+ watcher *fsnotify.Watcher
}
// NewWorker creates a new maildir worker with the provided worker.
-func NewWorker(worker *types.Worker) *Worker {
- return &Worker{worker: worker}
+func NewWorker(worker *types.Worker) (*Worker, error) {
+ watch, err := fsnotify.NewWatcher()
+ if err != nil {
+ return nil, fmt.Errorf("could not create file system watcher: %v", err)
+ }
+ return &Worker{worker: worker, watcher: watch}, nil
}
// Run starts the worker's message handling loop.
func (w *Worker) Run() {
for {
- action := <-w.worker.Actions
- msg := w.worker.ProcessAction(action)
- if err := w.handleMessage(msg); err == errUnsupported {
- w.worker.PostMessage(&types.Unsupported{
- Message: types.RespondTo(msg),
- }, nil)
- } else if err != nil {
- w.worker.PostMessage(&types.Error{
- Message: types.RespondTo(msg),
- Error: err,
- }, nil)
+ select {
+ case action := <-w.worker.Actions:
+ w.handleAction(action)
+ case ev := <-w.watcher.Events:
+ w.handleFSEvent(ev)
}
}
}
+func (w *Worker) handleAction(action types.WorkerMessage) {
+ msg := w.worker.ProcessAction(action)
+ if err := w.handleMessage(msg); err == errUnsupported {
+ w.worker.PostMessage(&types.Unsupported{
+ Message: types.RespondTo(msg),
+ }, nil)
+ } else if err != nil {
+ w.worker.PostMessage(&types.Error{
+ Message: types.RespondTo(msg),
+ Error: err,
+ }, nil)
+ }
+}
+
+func (w *Worker) handleFSEvent(ev fsnotify.Event) {
+ // we only care about files being created
+ if ev.Op != fsnotify.Create {
+ return
+ }
+ // if there's not a selected directory to rescan, ignore
+ if w.selected == nil {
+ return
+ }
+ _, err := w.selected.Unseen()
+ if err != nil {
+ w.worker.Logger.Printf("could not move new to cur : %v", err)
+ return
+ }
+ uids, err := w.c.UIDs(*w.selected)
+ if err != nil {
+ w.worker.Logger.Printf("could not scan UIDs: %v", err)
+ return
+ }
+ w.worker.PostMessage(&types.DirectoryContents{
+ Uids: uids,
+ }, nil)
+}
+
func (w *Worker) done(msg types.WorkerMessage) {
w.worker.PostMessage(&types.Done{types.RespondTo(msg)}, nil)
}
@@ -139,11 +177,28 @@ func (w *Worker) handleListDirectories(msg *types.ListDirectories) error {
func (w *Worker) handleOpenDirectory(msg *types.OpenDirectory) error {
defer w.done(msg)
w.worker.Logger.Printf("opening %s", msg.Directory)
+
+ // remove existing watch path
+ if w.selected != nil {
+ prevDir := filepath.Join(string(*w.selected), "new")
+ if err := w.watcher.Remove(prevDir); err != nil {
+ return fmt.Errorf("could not unwatch previous directory: %v", err)
+ }
+ }
+
+ // open the directory
dir, err := w.c.OpenDirectory(msg.Directory)
if err != nil {
return err
}
w.selected = &dir
+
+ // add watch path
+ newDir := filepath.Join(string(*w.selected), "new")
+ if err := w.watcher.Add(newDir); err != nil {
+ return fmt.Errorf("could not add watch to directory: %v", err)
+ }
+
// TODO: why does this need to be sent twice??
info := &types.DirectoryInfo{
Info: &models.DirectoryInfo{