forked from TrueCloudLab/distribution
90 lines
2.5 KiB
Go
90 lines
2.5 KiB
Go
package handlers
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import (
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"fmt"
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"net/http"
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"github.com/docker/distribution/registry/api/v2"
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ctxu "github.com/docker/distribution/context"
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"github.com/docker/distribution/digest"
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"github.com/docker/distribution/storage"
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"golang.org/x/net/context"
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)
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// Context should contain the request specific context for use in across
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// handlers. Resources that don't need to be shared across handlers should not
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// be on this object.
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type Context struct {
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// App points to the application structure that created this context.
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*App
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context.Context
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// Repository is the repository for the current request. All requests
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// should be scoped to a single repository. This field may be nil.
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Repository storage.Repository
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// Errors is a collection of errors encountered during the request to be
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// returned to the client API. If errors are added to the collection, the
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// handler *must not* start the response via http.ResponseWriter.
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Errors v2.Errors
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urlBuilder *v2.URLBuilder
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// TODO(stevvooe): The goal is too completely factor this context and
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// dispatching out of the web application. Ideally, we should lean on
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// context.Context for injection of these resources.
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}
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// Value overrides context.Context.Value to ensure that calls are routed to
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// correct context.
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func (ctx *Context) Value(key interface{}) interface{} {
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return ctx.Context.Value(key)
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}
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func getName(ctx context.Context) (name string) {
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return ctxu.GetStringValue(ctx, "vars.name")
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}
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func getTag(ctx context.Context) (tag string) {
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return ctxu.GetStringValue(ctx, "vars.tag")
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}
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var errDigestNotAvailable = fmt.Errorf("digest not available in context")
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func getDigest(ctx context.Context) (dgst digest.Digest, err error) {
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dgstStr := ctxu.GetStringValue(ctx, "vars.digest")
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if dgstStr == "" {
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ctxu.GetLogger(ctx).Errorf("digest not available")
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return "", errDigestNotAvailable
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}
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d, err := digest.ParseDigest(dgstStr)
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if err != nil {
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ctxu.GetLogger(ctx).Errorf("error parsing digest=%q: %v", dgstStr, err)
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return "", err
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}
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return d, nil
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}
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func getUploadUUID(ctx context.Context) (uuid string) {
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return ctxu.GetStringValue(ctx, "vars.uuid")
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}
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// getUserName attempts to resolve a username from the context and request. If
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// a username cannot be resolved, the empty string is returned.
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func getUserName(ctx context.Context, r *http.Request) string {
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username := ctxu.GetStringValue(ctx, "auth.user.name")
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// Fallback to request user with basic auth
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if username == "" {
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var ok bool
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uname, _, ok := basicAuth(r)
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if ok {
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username = uname
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}
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}
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return username
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}
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