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mirror of https://github.com/rclone/rclone.git synced 2025-12-06 00:03:32 +00:00

Fix excessive retries missing --max-duration timeout - fixes #4504

This change checks the context whenever rclone might retry, and
doesn't retry if the current context has an error.

This fixes the pathological behaviour of `--max-duration` refusing to
exit because all the context deadline exceeded errors were being
retried.

This unfortunately meant changing the shouldRetry logic in every
backend and doing a lot of context propagation.

See: https://forum.rclone.org/t/add-flag-to-exit-immediately-when-max-duration-reached/22723
This commit is contained in:
Nick Craig-Wood
2021-03-11 14:44:01 +00:00
parent 32925dae1f
commit 4013bc4a4c
31 changed files with 474 additions and 360 deletions

View File

@@ -317,7 +317,10 @@ var retryErrorCodes = []int{
// shouldRetry returns a boolean as to whether this resp and err
// deserve to be retried. It returns the err as a convenience
func shouldRetry(resp *http.Response, err error) (bool, error) {
func shouldRetry(ctx context.Context, resp *http.Response, err error) (bool, error) {
if fserrors.ContextError(ctx, &err) {
return false, err
}
authRetry := false
if resp != nil && resp.StatusCode == 401 && len(resp.Header["Www-Authenticate"]) == 1 && strings.Index(resp.Header["Www-Authenticate"][0], "expired_token") >= 0 {
@@ -548,7 +551,7 @@ func (f *Fs) CreateDir(ctx context.Context, pathID, leaf string) (newID string,
}
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, &mkdir, &info)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
if err != nil {
//fmt.Printf("...Error %v\n", err)
@@ -585,7 +588,7 @@ OUTER:
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &result)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return found, errors.Wrap(err, "couldn't list files")
@@ -740,7 +743,7 @@ func (f *Fs) deleteObject(ctx context.Context, id string) error {
}
return f.pacer.Call(func() (bool, error) {
resp, err := f.srv.Call(ctx, &opts)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
}
@@ -767,7 +770,7 @@ func (f *Fs) purgeCheck(ctx context.Context, dir string, check bool) error {
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.Call(ctx, &opts)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return errors.Wrap(err, "rmdir failed")
@@ -839,7 +842,7 @@ func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object,
var info *api.Item
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, &copyFile, &info)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, err
@@ -877,7 +880,7 @@ func (f *Fs) move(ctx context.Context, endpoint, id, leaf, directoryID string) (
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, &move, &info)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, err
@@ -895,7 +898,7 @@ func (f *Fs) About(ctx context.Context) (usage *fs.Usage, err error) {
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &user)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, errors.Wrap(err, "failed to read user info")
@@ -1008,7 +1011,7 @@ func (f *Fs) PublicLink(ctx context.Context, remote string, expire fs.Duration,
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, &shareLink, &info)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
return info.SharedLink.URL, err
}
@@ -1026,7 +1029,7 @@ func (f *Fs) deletePermanently(ctx context.Context, itemType, id string) error {
}
return f.pacer.Call(func() (bool, error) {
resp, err := f.srv.Call(ctx, &opts)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
}
@@ -1048,7 +1051,7 @@ func (f *Fs) CleanUp(ctx context.Context) (err error) {
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &result)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return errors.Wrap(err, "couldn't list trash")
@@ -1182,7 +1185,7 @@ func (o *Object) setModTime(ctx context.Context, modTime time.Time) (*api.Item,
var info *api.Item
err := o.fs.pacer.Call(func() (bool, error) {
resp, err := o.fs.srv.CallJSON(ctx, &opts, &update, &info)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
return info, err
}
@@ -1215,7 +1218,7 @@ func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.Read
}
err = o.fs.pacer.Call(func() (bool, error) {
resp, err = o.fs.srv.Call(ctx, &opts)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, err
@@ -1255,7 +1258,7 @@ func (o *Object) upload(ctx context.Context, in io.Reader, leaf, directoryID str
}
err = o.fs.pacer.CallNoRetry(func() (bool, error) {
resp, err = o.fs.srv.CallJSON(ctx, &opts, &upload, &result)
return shouldRetry(resp, err)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return err