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Fixes #1788: Retry-After support for Dropbox backend

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This commit is contained in:
Mathieu Carbou 2018-12-05 10:11:41 -05:00 committed by Nick Craig-Wood
parent 4138d5aa75
commit 8fb707e16d
1 changed files with 11 additions and 1 deletions
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12
backend/dropbox/dropbox.go
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@ -31,6 +31,7 @@ import (
"time"
"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox"
"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/auth"
"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/common"
"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/files"
"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/sharing"
@ -203,7 +204,16 @@ func shouldRetry(err error) (bool, error) {
return false, err
}
baseErrString := errors.Cause(err).Error()
// FIXME there is probably a better way of doing this!
// handle any official Retry-After header from Dropbox's SDK first
switch e := err.(type) {
case auth.RateLimitAPIError:
if e.RateLimitError.RetryAfter > 0 {
fs.Debugf(baseErrString, "Too many requests or write operations. Trying again in %d seconds.", e.RateLimitError.RetryAfter)
time.Sleep(time.Duration(e.RateLimitError.RetryAfter) * time.Second)
}
return true, err
}
// Keep old behaviour for backward compatibility
if strings.Contains(baseErrString, "too_many_write_operations") || strings.Contains(baseErrString, "too_many_requests") {
return true, err
}