mirror of https://github.com/harness/drone.git
103 lines
2.9 KiB
Go
103 lines
2.9 KiB
Go
// Copyright 2023 Harness, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package oci
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import (
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"errors"
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"fmt"
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"io"
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"net/http"
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"time"
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"github.com/harness/gitness/registry/app/pkg"
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"github.com/harness/gitness/registry/app/pkg/commons"
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"github.com/harness/gitness/registry/app/pkg/docker"
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"github.com/rs/zerolog/log"
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)
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func (h *Handler) GetBlob(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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info, err := h.getRegistryInfo(r, true)
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if err != nil {
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handleErrors(r.Context(), []error{err}, w)
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return
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}
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result := h.Controller.GetBlob(ctx, info)
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response, ok := result.(*docker.GetBlobResponse)
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if !ok {
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log.Ctx(ctx).Error().Msg("Failed to cast result to GetBlobResponse")
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handleErrors(ctx, []error{errors.New("failed to cast result to GetBlobResponse")}, w)
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return
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}
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defer func() {
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if response.Body != nil {
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err := response.Body.Close()
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if err != nil {
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log.Ctx(ctx).Error().Msgf("Failed to close body: %v", err)
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}
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}
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if response.ReadCloser != nil {
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err := response.ReadCloser.Close()
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if err != nil {
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log.Ctx(ctx).Error().Msgf("Failed to close readCloser: %v", err)
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}
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}
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}()
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if commons.IsEmpty(response.GetErrors()) {
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if !commons.IsEmpty(response.RedirectURL) {
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http.Redirect(w, r, response.RedirectURL, http.StatusTemporaryRedirect)
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return
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}
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if response.ResponseHeaders != nil && response.ResponseHeaders.Code == http.StatusMovedPermanently {
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response.ResponseHeaders.WriteToResponse(w)
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return
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}
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response.ResponseHeaders.WriteHeadersToResponse(w)
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if r.Method == http.MethodHead {
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return
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}
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h.serveContent(w, r, response, info)
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response.ResponseHeaders.WriteToResponse(w)
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}
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handleErrors(r.Context(), response.GetErrors(), w)
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}
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func (h *Handler) serveContent(
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w http.ResponseWriter, r *http.Request, response *docker.GetBlobResponse, info pkg.RegistryInfo,
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) {
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if response.Body != nil {
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http.ServeContent(w, r, info.Digest, time.Time{}, response.Body)
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} else {
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// Use io.CopyN to avoid out of memory when pulling big blob
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written, err2 := io.CopyN(w, response.ReadCloser, response.Size)
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if err2 != nil {
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response.Errors = append(response.Errors, errors.New("error copying blob to response"))
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log.Ctx(r.Context()).Error().Msg("error copying blob to response:")
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}
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if written != response.Size {
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response.Errors = append(
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response.Errors,
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fmt.Errorf(fmt.Sprintf("The size mismatch, actual:%d, expected: %d", written, response.Size)),
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)
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}
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}
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}
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