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registry: Added simple checksums (sha256) for layers

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Docker-DCO-1.1-Signed-off-by: Sam Alba <sam@docker.com> (github: samalba)
This commit is contained in:
Sam Alba 2014-02-23 18:33:46 -08:00
parent d2d6c2381d
commit 3bf0ee5e52
1 changed files with 18 additions and 11 deletions
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23
docs/registry.go
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@ -2,6 +2,7 @@ package registry
import (
"bytes"
"crypto/sha256"
"encoding/json"
"errors"
"fmt"
@ -388,6 +389,7 @@ func (r *Registry) PushImageChecksumRegistry(imgData *ImgData, registry string,
}
setTokenAuth(req, token)
req.Header.Set("X-Docker-Checksum", imgData.Checksum)
req.Header.Set("X-Docker-Checksum-Payload", imgData.ChecksumPayload)
res, err := doWithCookies(r.client, req)
if err != nil {
@ -446,26 +448,28 @@ func (r *Registry) PushImageJSONRegistry(imgData *ImgData, jsonRaw []byte, regis
return nil
}
func (r *Registry) PushImageLayerRegistry(imgID string, layer io.Reader, registry string, token []string, jsonRaw []byte) (checksum string, err error) {
func (r *Registry) PushImageLayerRegistry(imgID string, layer io.Reader, registry string, token []string, jsonRaw []byte) (checksum string, checksumPayload string, err error) {
utils.Debugf("[registry] Calling PUT %s", registry+"images/"+imgID+"/layer")
tarsumLayer := &utils.TarSum{Reader: layer}
h := sha256.New()
checksumLayer := &utils.CheckSum{Reader: layer, Hash: h}
tarsumLayer := &utils.TarSum{Reader: checksumLayer}
req, err := r.reqFactory.NewRequest("PUT", registry+"images/"+imgID+"/layer", tarsumLayer)
if err != nil {
return "", err
return "", "", err
}
req.ContentLength = -1
req.TransferEncoding = []string{"chunked"}
setTokenAuth(req, token)
res, err := doWithCookies(r.client, req)
if err != nil {
return "", fmt.Errorf("Failed to upload layer: %s", err)
return "", "", fmt.Errorf("Failed to upload layer: %s", err)
}
if rc, ok := layer.(io.Closer); ok {
if err := rc.Close(); err != nil {
return "", err
return "", "", err
}
}
defer res.Body.Close()
@ -473,11 +477,13 @@ func (r *Registry) PushImageLayerRegistry(imgID string, layer io.Reader, registr
if res.StatusCode != 200 {
errBody, err := ioutil.ReadAll(res.Body)
if err != nil {
return "", utils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d while uploading metadata and error when trying to parse response body: %s", res.StatusCode, err), res)
return "", "", utils.NewHTTPRequestError(fmt.Sprintf("HTTP code %d while uploading metadata and error when trying to parse response body: %s", res.StatusCode, err), res)
}
return "", utils.NewHTTPRequestError(fmt.Sprintf("Received HTTP code %d while uploading layer: %s", res.StatusCode, errBody), res)
return "", "", utils.NewHTTPRequestError(fmt.Sprintf("Received HTTP code %d while uploading layer: %s", res.StatusCode, errBody), res)
}
return tarsumLayer.Sum(jsonRaw), nil
checksumPayload = "sha256:" + checksumLayer.Sum()
return tarsumLayer.Sum(jsonRaw), checksumPayload, nil
}
// push a tag on the registry.
@ -673,6 +679,7 @@ type RepositoryData struct {
type ImgData struct {
ID string `json:"id"`
Checksum string `json:"checksum,omitempty"`
ChecksumPayload string `json:"checksum,omitempty"`
Tag string `json:",omitempty"`
}