16427: Touch block timestamps to avoid garbage collection race.

[arvados.git] / sdk / go / arvados / keep_service.go

diff --git a/sdk/go/arvados/keep_service.go b/sdk/go/arvados/keep_service.go
index a2263d1791803d2474b444b070d513c1fe3a3c16..3af7479202efb46df838e48246ccf9c2f0b5b100 100644 (file)
--- a/sdk/go/arvados/keep_service.go
+++ b/sdk/go/arvados/keep_service.go
@@ -104,6 +104,24 @@ func (s *KeepService) Mounts(c *Client) ([]KeepMount, error) {
        return mounts, nil
 }
 
+// Touch updates the timestamp on the given block.
+func (s *KeepService) Touch(ctx context.Context, c *Client, blk string) error {
+       req, err := http.NewRequest("TOUCH", s.url(blk), nil)
+       if err != nil {
+               return err
+       }
+       resp, err := c.Do(req.WithContext(ctx))
+       if err != nil {
+               return err
+       }
+       defer resp.Body.Close()
+       if resp.StatusCode != http.StatusOK {
+               body, _ := ioutil.ReadAll(resp.Body)
+               return fmt.Errorf("%s %s: %s", resp.Proto, resp.Status, body)
+       }
+       return nil
+}
+
 // Untrash moves/copies the given block out of trash.
 func (s *KeepService) Untrash(ctx context.Context, c *Client, blk string) error {
        req, err := http.NewRequest("PUT", s.url("untrash/"+blk), nil)