forgejo/routers/common/serve.go
wxiaoguang 6b33152b7d
Decouple the different contexts from each other (#24786)
Replace #16455

Close #21803

Mixing different Gitea contexts together causes some problems:

1. Unable to respond proper content when error occurs, eg: Web should
respond HTML while API should respond JSON
2. Unclear dependency, eg: it's unclear when Context is used in
APIContext, which fields should be initialized, which methods are
necessary.


To make things clear, this PR introduces a Base context, it only
provides basic Req/Resp/Data features.

This PR mainly moves code. There are still many legacy problems and
TODOs in code, leave unrelated changes to future PRs.
2023-05-21 09:50:53 +08:00

44 lines
1.2 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package common
import (
"io"
"time"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/httpcache"
"code.gitea.io/gitea/modules/httplib"
"code.gitea.io/gitea/modules/log"
)
// ServeBlob download a git.Blob
func ServeBlob(ctx *context.Base, filePath string, blob *git.Blob, lastModified time.Time) error {
if httpcache.HandleGenericETagTimeCache(ctx.Req, ctx.Resp, `"`+blob.ID.String()+`"`, lastModified) {
return nil
}
dataRc, err := blob.DataAsync()
if err != nil {
return err
}
defer func() {
if err = dataRc.Close(); err != nil {
log.Error("ServeBlob: Close: %v", err)
}
}()
httplib.ServeContentByReader(ctx.Req, ctx.Resp, filePath, blob.Size(), dataRc)
return nil
}
func ServeContentByReader(ctx *context.Base, filePath string, size int64, reader io.Reader) {
httplib.ServeContentByReader(ctx.Req, ctx.Resp, filePath, size, reader)
}
func ServeContentByReadSeeker(ctx *context.Base, filePath string, modTime time.Time, reader io.ReadSeeker) {
httplib.ServeContentByReadSeeker(ctx.Req, ctx.Resp, filePath, modTime, reader)
}