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Set the LastModified header for raw files (#18356)

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Although the use of LastModified dates for caching of git objects should be
discouraged (as it is not native to git - and there are a LOT of ways this
could be incorrect) - LastModified dates can be a helpful somewhat more human
way of caching for simple cases.

This PR adds this header and handles the If-Modified-Since header to the /raw/
routes.

Fix #18354

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>
This commit is contained in:
zeripath 2022-05-09 16:54:51 +01:00 • committed by GitHub
parent e435283c0f
commit 9f5ddca57c
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5 changed files with 135 additions and 31 deletions
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43
routers/api/v1/repo/file.go
View file

@ -9,13 +9,16 @@ import (
"encoding/base64"
"fmt"
"net/http"
"path"
"time"
"code.gitea.io/gitea/models"
repo_model "code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/models/unit"
"code.gitea.io/gitea/modules/cache"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/setting"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/web"
"code.gitea.io/gitea/routers/common"
@ -62,18 +65,50 @@ func GetRawFile(ctx *context.APIContext) {
return
}
blob, err := ctx.Repo.Commit.GetBlobByPath(ctx.Repo.TreePath)
blob, lastModified := getBlobForEntry(ctx)
if ctx.Written() {
return
}
if err := common.ServeBlob(ctx.Context, blob, lastModified); err != nil {
ctx.Error(http.StatusInternalServerError, "ServeBlob", err)
}
}
func getBlobForEntry(ctx *context.APIContext) (blob *git.Blob, lastModified time.Time) {
entry, err := ctx.Repo.Commit.GetTreeEntryByPath(ctx.Repo.TreePath)
if err != nil {
if git.IsErrNotExist(err) {
ctx.NotFound()
} else {
ctx.Error(http.StatusInternalServerError, "GetBlobByPath", err)
ctx.Error(http.StatusInternalServerError, "GetTreeEntryByPath", err)
}
return
}
if err = common.ServeBlob(ctx.Context, blob); err != nil {
ctx.Error(http.StatusInternalServerError, "ServeBlob", err)
if entry.IsDir() || entry.IsSubModule() {
ctx.NotFound("getBlobForEntry", nil)
return
}
var c *git.LastCommitCache
if setting.CacheService.LastCommit.Enabled && ctx.Repo.CommitsCount >= setting.CacheService.LastCommit.CommitsCount {
c = git.NewLastCommitCache(ctx.Repo.Repository.FullName(), ctx.Repo.GitRepo, setting.LastCommitCacheTTLSeconds, cache.GetCache())
}
info, _, err := git.Entries([]*git.TreeEntry{entry}).GetCommitsInfo(ctx, ctx.Repo.Commit, path.Dir("/" + ctx.Repo.TreePath)[1:], c)
if err != nil {
ctx.Error(http.StatusInternalServerError, "GetCommitsInfo", err)
return
}
if len(info) == 1 {
// Not Modified
lastModified = info[0].Commit.Committer.When
}
blob = entry.Blob()
return
}
// GetArchive get archive of a repository