drone/registry/app/api/handler/oci/head_blob.go

//  Copyright 2023 Harness, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package oci

import (
	"net/http"

	"github.com/harness/gitness/registry/app/pkg/commons"
)

func (h *Handler) HeadBlob(w http.ResponseWriter, r *http.Request) {
	info, err := h.GetRegistryInfo(r, false)
	if err != nil {
		handleErrors(r.Context(), []error{err}, w)
		return
	}
	headers, body, _, readCloser, redirectURL, errs := h.Controller.HeadBlob(r.Context(), info)
	defer func() {
		if body != nil {
			body.Close()
		}
		if readCloser != nil {
			readCloser.Close()
		}
	}()

	if commons.IsEmpty(errs) {
		if redirectURL != "" {
			http.Redirect(w, r, redirectURL, http.StatusTemporaryRedirect)
			return
		}

		headers.WriteHeadersToResponse(w)
	}
	handleErrors(r.Context(), errs, w)
}