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Support Range header end in lfs (#11314)

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* Initial support of end Range header option in lfs

* Allow end range option to be unspecified

* Declare toByte for consistency

* Factor out content encoding tests from doLfs

This is so Range tests could still use doLfs but without repeating
not related tests

* Add Range header test

* implemented extraHeader
* parametrized expectedStatus

* Add more test cases of Range header

* Fix S1030: should use resp.Body.String()

* Add more tests for edge cases

* Fix tests

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: zeripath <art27@cantab.net>
This commit is contained in:
burbon
2020-05-11 09:37:59 +01:00
committed by GitHub
parent 742e26f5a5
commit d8e6acda8c
2 changed files with 119 additions and 18 deletions
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20
modules/lfs/server.go
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@@ -165,15 +165,24 @@ func getContentHandler(ctx *context.Context) {
}
// Support resume download using Range header
var fromByte int64
var fromByte, toByte int64
toByte = meta.Size - 1
statusCode := 200
if rangeHdr := ctx.Req.Header.Get("Range"); rangeHdr != "" {
regex := regexp.MustCompile(`bytes=(\d+)\-.*`)
regex := regexp.MustCompile(`bytes=(\d+)\-(\d*).*`)
match := regex.FindStringSubmatch(rangeHdr)
if len(match) > 1 {
statusCode = 206
fromByte, _ = strconv.ParseInt(match[1], 10, 32)
ctx.Resp.Header().Set("Content-Range", fmt.Sprintf("bytes %d-%d/%d", fromByte, meta.Size-1, meta.Size-fromByte))
if match[2] != "" {
_toByte, _ := strconv.ParseInt(match[2], 10, 32)
if _toByte >= fromByte && _toByte < toByte {
toByte = _toByte
}
}
ctx.Resp.Header().Set("Content-Range", fmt.Sprintf("bytes %d-%d/%d", fromByte, toByte, meta.Size-fromByte))
}
}
@@ -186,7 +195,8 @@ func getContentHandler(ctx *context.Context) {
}
defer content.Close()
ctx.Resp.Header().Set("Content-Length", strconv.FormatInt(meta.Size-fromByte, 10))
contentLength := toByte + 1 - fromByte
ctx.Resp.Header().Set("Content-Length", strconv.FormatInt(contentLength, 10))
ctx.Resp.Header().Set("Content-Type", "application/octet-stream")
filename := ctx.Params("filename")
@@ -198,7 +208,7 @@ func getContentHandler(ctx *context.Context) {
}
ctx.Resp.WriteHeader(statusCode)
if written, err := io.Copy(ctx.Resp, content); err != nil {
if written, err := io.CopyN(ctx.Resp, content, contentLength); err != nil {
log.Error("Error whilst copying LFS OID[%s] to the response after %d bytes. Error: %v", meta.Oid, written, err)
}
logRequest(ctx.Req, statusCode)