Back up the daemon and restore its data

[onechat] / subagent.go

diff --git a/subagent.go b/subagent.go
index 2e50d5d87ffdd05e18581f7a9c71e1d74426d864..07bfa452f6c8aef7bc18bf10c6bbc097668f5793 100644 (file)
--- a/subagent.go
+++ b/subagent.go
@@ -124,14 +124,40 @@ func (s *Subagents) Get(ctx context.Context, name string) (*Subagent, error) {
        return subagent, nil
 }
 
        return subagent, nil
 }
 

+// Snapshot flushes and locks the open logs while snapshot reads the subagent
+// files. snapshot must not call Subagents or an open Subagent.
+func (s *Subagents) Snapshot(ctx context.Context, snapshot func() error) error {
+       s.mutex.Lock()
+       defer s.mutex.Unlock()
+
+       for _, subagent := range s.open {
+               subagent.mutex.Lock()
+               defer subagent.mutex.Unlock()
+
+               err := subagent.Flush(ctx)
+               if err != nil {
+                       return fmt.Errorf("flush subagent snapshot: %w", err)
+               }
+       }
+
+       err := snapshot()
+       if err != nil {
+               return fmt.Errorf("copy subagent snapshot: %w", err)
+       }
+
+       return nil
+}
+

 // Close makes the writes of each open log durable and closes it.
 func (s *Subagents) Close() error {
        s.mutex.Lock()
        defer s.mutex.Unlock()
 
        var err error
 // Close makes the writes of each open log durable and closes it.
 func (s *Subagents) Close() error {
        s.mutex.Lock()
        defer s.mutex.Unlock()
 
        var err error

+

        for name, subagent := range s.open {
                err = errors.Join(err, subagent.close())
        for name, subagent := range s.open {
                err = errors.Join(err, subagent.close())

+

                delete(s.open, name)
        }
 
                delete(s.open, name)
        }