Enable struct check

Signed-off-by: Derek McGowan <derek@mcgstyle.net>

.gometalinter.json

@@ -4,6 +4,8 @@
   "Sort": ["linter", "severity", "path", "line"],
   "EnableGC": true,
   "Enable": [
+    "structcheck",
+
     "gofmt",
     "golint",
     "vet"

registry/api/v2/routes.go

@@ -14,15 +14,6 @@ const (
 	RouteNameCatalog         = "catalog"
 )
 
-var allEndpoints = []string{
-	RouteNameManifest,
-	RouteNameCatalog,
-	RouteNameTags,
-	RouteNameBlob,
-	RouteNameBlobUpload,
-	RouteNameBlobUploadChunk,
-}
-
 // Router builds a gorilla router with named routes for the various API
 // methods. This can be used directly by both server implementations and
 // clients.

registry/client/auth/session.go

@@ -68,7 +68,6 @@ func NewAuthorizer(manager challenge.Manager, handlers ...AuthenticationHandler)
 type endpointAuthorizer struct {
 	challenges challenge.Manager
 	handlers   []AuthenticationHandler
-	transport  http.RoundTripper
 }
 
 func (ea *endpointAuthorizer) ModifyRequest(req *http.Request) error {
@@ -121,7 +120,6 @@ type clock interface {
 }
 
 type tokenHandler struct {
-	header    http.Header
 	creds     CredentialStore
 	transport http.RoundTripper
 	clock     clock

registry/client/repository.go

@@ -83,7 +83,6 @@ func NewRegistry(baseURL string, transport http.RoundTripper) (Registry, error)
 type registry struct {
 	client *http.Client
 	ub     *v2.URLBuilder
-	context context.Context
 }
 
 // Repositories returns a lexigraphically sorted catalog given a base URL.  The 'entries' slice will be filled up to the size
@@ -154,7 +153,6 @@ func NewRepository(name reference.Named, baseURL string, transport http.RoundTri
 type repository struct {
 	client *http.Client
 	ub     *v2.URLBuilder
-	context context.Context
 	name   reference.Named
 }