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Enable proxying registries to downgrade fetched manifests to Schema 1.

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Ensure Accept headers are sent with TagService.Get (which hits manifest
endpoints).  Add support for remote Get and Put for the proxied blobstore.

Signed-off-by: Richard Scothern <richard.scothern@gmail.com>
This commit is contained in:
Richard Scothern 2016-02-17 16:32:23 -08:00
parent db7411ff2e
commit 29e0411f00
3 changed files with 77 additions and 7 deletions
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24
docs/client/repository.go
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@ -292,9 +292,18 @@ func (t *tags) Get(ctx context.Context, tag string) (distribution.Descriptor, er
if err != nil {
return distribution.Descriptor{}, err
}
var attempts int
resp, err := t.client.Head(u)
req, err := http.NewRequest("HEAD", u, nil)
if err != nil {
return distribution.Descriptor{}, err
}
for _, t := range distribution.ManifestMediaTypes() {
req.Header.Add("Accept", t)
}
var attempts int
resp, err := t.client.Do(req)
check:
if err != nil {
return distribution.Descriptor{}, err
@ -304,7 +313,16 @@ check:
case resp.StatusCode >= 200 && resp.StatusCode < 400:
return descriptorFromResponse(resp)
case resp.StatusCode == http.StatusMethodNotAllowed:
resp, err = t.client.Get(u)
req, err = http.NewRequest("GET", u, nil)
if err != nil {
return distribution.Descriptor{}, err
}
for _, t := range distribution.ManifestMediaTypes() {
req.Header.Add("Accept", t)
}
resp, err = t.client.Do(req)
attempts++
if attempts > 1 {
return distribution.Descriptor{}, err