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https://github.com/moby/moby.git
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d4836cd7ec
Expand the godoc documentation for the graph package. Centralize DefaultTag in the graphs/tag package instead of defining it twice. Remove some unnecessary "config" structs that are only used to pass a few parameters to a function. Simplify the GetParentsSize function - there's no reason for it to take an accumulator argument. Unexport some functions that aren't needed outside the package. Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
113 lines
3.4 KiB
Go
113 lines
3.4 KiB
Go
package graph
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import (
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"errors"
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"net"
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"net/http"
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"net/url"
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"time"
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"github.com/Sirupsen/logrus"
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"github.com/docker/distribution"
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"github.com/docker/distribution/digest"
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"github.com/docker/distribution/manifest"
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"github.com/docker/distribution/registry/client"
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"github.com/docker/distribution/registry/client/auth"
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"github.com/docker/distribution/registry/client/transport"
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"github.com/docker/docker/cliconfig"
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"github.com/docker/docker/registry"
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"golang.org/x/net/context"
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)
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type dumbCredentialStore struct {
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auth *cliconfig.AuthConfig
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}
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func (dcs dumbCredentialStore) Basic(*url.URL) (string, string) {
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return dcs.auth.Username, dcs.auth.Password
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}
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// NewV2Repository returns a repository (v2 only). It creates a HTTP transport
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// providing timeout settings and authentication support, and also verifies the
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// remote API version.
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func NewV2Repository(repoInfo *registry.RepositoryInfo, endpoint registry.APIEndpoint, metaHeaders http.Header, authConfig *cliconfig.AuthConfig) (distribution.Repository, error) {
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ctx := context.Background()
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repoName := repoInfo.CanonicalName
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// If endpoint does not support CanonicalName, use the RemoteName instead
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if endpoint.TrimHostname {
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repoName = repoInfo.RemoteName
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}
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// TODO(dmcgowan): Call close idle connections when complete, use keep alive
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base := &http.Transport{
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Proxy: http.ProxyFromEnvironment,
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Dial: (&net.Dialer{
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Timeout: 30 * time.Second,
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KeepAlive: 30 * time.Second,
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DualStack: true,
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}).Dial,
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TLSHandshakeTimeout: 10 * time.Second,
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TLSClientConfig: endpoint.TLSConfig,
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// TODO(dmcgowan): Call close idle connections when complete and use keep alive
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DisableKeepAlives: true,
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}
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modifiers := registry.DockerHeaders(metaHeaders)
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authTransport := transport.NewTransport(base, modifiers...)
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pingClient := &http.Client{
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Transport: authTransport,
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Timeout: 5 * time.Second,
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}
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endpointStr := endpoint.URL + "/v2/"
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req, err := http.NewRequest("GET", endpointStr, nil)
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if err != nil {
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return nil, err
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}
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resp, err := pingClient.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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versions := auth.APIVersions(resp, endpoint.VersionHeader)
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if endpoint.VersionHeader != "" && len(endpoint.Versions) > 0 {
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var foundVersion bool
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for _, version := range endpoint.Versions {
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for _, pingVersion := range versions {
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if version == pingVersion {
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foundVersion = true
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}
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}
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}
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if !foundVersion {
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return nil, errors.New("endpoint does not support v2 API")
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}
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}
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challengeManager := auth.NewSimpleChallengeManager()
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if err := challengeManager.AddResponse(resp); err != nil {
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return nil, err
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}
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creds := dumbCredentialStore{auth: authConfig}
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tokenHandler := auth.NewTokenHandler(authTransport, creds, repoName, "push", "pull")
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basicHandler := auth.NewBasicHandler(creds)
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modifiers = append(modifiers, auth.NewAuthorizer(challengeManager, tokenHandler, basicHandler))
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tr := transport.NewTransport(base, modifiers...)
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return client.NewRepository(ctx, repoName, endpoint.URL, tr)
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}
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func digestFromManifest(m *manifest.SignedManifest, localName string) (digest.Digest, int, error) {
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payload, err := m.Payload()
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if err != nil {
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logrus.Debugf("could not retrieve manifest payload: %v", err)
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return "", 0, err
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}
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manifestDigest, err := digest.FromBytes(payload)
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if err != nil {
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logrus.Infof("Could not compute manifest digest for %s:%s : %v", localName, m.Tag, err)
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}
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return manifestDigest, len(payload), nil
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}
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