1 files changed, 366 insertions, 0 deletions
diff --git a/weed/server/volume_server_fasthttp_handlers_read.go b/weed/server/volume_server_fasthttp_handlers_read.go
new file mode 100644
index 000000000..f58b705f1
--- /dev/null
+++ b/weed/server/volume_server_fasthttp_handlers_read.go
@@ -0,0 +1,366 @@
+package weed_server
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"mime"
+	"mime/multipart"
+	"net/http"
+	"net/url"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/valyala/fasthttp"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/images"
+	"github.com/chrislusf/seaweedfs/weed/operation"
+	"github.com/chrislusf/seaweedfs/weed/stats"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+func (vs *VolumeServer) fastGetOrHeadHandler(ctx *fasthttp.RequestCtx) {
+
+	stats.VolumeServerRequestCounter.WithLabelValues("get").Inc()
+	start := time.Now()
+	defer func() { stats.VolumeServerRequestHistogram.WithLabelValues("get").Observe(time.Since(start).Seconds()) }()
+
+	requestPath := string(ctx.Path())
+	n := new(needle.Needle)
+	vid, fid, filename, ext, _ := parseURLPath(requestPath)
+
+	if !vs.maybeCheckJwtAuthorization(ctx, vid, fid, false) {
+		writeJsonError(ctx, http.StatusUnauthorized, errors.New("wrong jwt"))
+		return
+	}
+
+	volumeId, err := needle.NewVolumeId(vid)
+	if err != nil {
+		glog.V(2).Infof("parsing volumd id %s error: %v", err, requestPath)
+		ctx.SetStatusCode(http.StatusBadRequest)
+		return
+	}
+	err = n.ParsePath(fid)
+	if err != nil {
+		glog.V(2).Infof("parsing fid %s error: %v", err, requestPath)
+		ctx.SetStatusCode(http.StatusBadRequest)
+		return
+	}
+
+	// glog.V(4).Infoln("volume", volumeId, "reading", n)
+	hasVolume := vs.store.HasVolume(volumeId)
+	_, hasEcVolume := vs.store.FindEcVolume(volumeId)
+	if !hasVolume && !hasEcVolume {
+		if !vs.ReadRedirect {
+			glog.V(2).Infoln("volume is not local:", err, requestPath)
+			ctx.SetStatusCode(http.StatusNotFound)
+			return
+		}
+		lookupResult, err := operation.Lookup(vs.GetMaster(), volumeId.String())
+		glog.V(2).Infoln("volume", volumeId, "found on", lookupResult, "error", err)
+		if err == nil && len(lookupResult.Locations) > 0 {
+			u, _ := url.Parse(util.NormalizeUrl(lookupResult.Locations[0].PublicUrl))
+			u.Path = fmt.Sprintf("%s/%s,%s", u.Path, vid, fid)
+			arg := url.Values{}
+			if c := ctx.FormValue("collection"); c != nil {
+				arg.Set("collection", string(c))
+			}
+			u.RawQuery = arg.Encode()
+			ctx.Redirect(u.String(), http.StatusMovedPermanently)
+
+		} else {
+			glog.V(2).Infof("lookup %s error: %v", requestPath, err)
+			ctx.SetStatusCode(http.StatusNotFound)
+		}
+		return
+	}
+
+	cookie := n.Cookie
+	var count int
+	if hasVolume {
+		count, err = vs.store.ReadVolumeNeedle(volumeId, n)
+	} else if hasEcVolume {
+		count, err = vs.store.ReadEcShardNeedle(context.Background(), volumeId, n)
+	}
+	// glog.V(4).Infoln("read bytes", count, "error", err)
+	if err != nil || count < 0 {
+		glog.V(0).Infof("read %s isNormalVolume %v error: %v", requestPath, hasVolume, err)
+		ctx.SetStatusCode(http.StatusNotFound)
+		return
+	}
+	if n.Cookie != cookie {
+		glog.V(0).Infof("request %s with cookie:%x expected:%x agent %s", requestPath, cookie, n.Cookie, string(ctx.UserAgent()))
+		ctx.SetStatusCode(http.StatusNotFound)
+		return
+	}
+	if n.LastModified != 0 {
+		ctx.Response.Header.Set("Last-Modified", time.Unix(int64(n.LastModified), 0).UTC().Format(http.TimeFormat))
+		if ctx.Response.Header.Peek("If-Modified-Since") != nil {
+			if t, parseError := time.Parse(http.TimeFormat, string(ctx.Response.Header.Peek("If-Modified-Since"))); parseError == nil {
+				if t.Unix() >= int64(n.LastModified) {
+					ctx.SetStatusCode(http.StatusNotModified)
+					return
+				}
+			}
+		}
+	}
+	if inm := ctx.Response.Header.Peek("If-None-Match"); inm != nil && string(inm) == "\""+n.Etag()+"\"" {
+		ctx.SetStatusCode(http.StatusNotModified)
+		return
+	}
+	eTagMd5 := ctx.Response.Header.Peek("ETag-MD5")
+	if eTagMd5 != nil && string(eTagMd5) == "True" {
+		fastSetEtag(ctx, n.MD5())
+	} else {
+		fastSetEtag(ctx, n.Etag())
+	}
+
+	if n.HasPairs() {
+		pairMap := make(map[string]string)
+		err = json.Unmarshal(n.Pairs, &pairMap)
+		if err != nil {
+			glog.V(0).Infoln("Unmarshal pairs error:", err)
+		}
+		for k, v := range pairMap {
+			ctx.Response.Header.Set(k, v)
+		}
+	}
+
+	if vs.fastTryHandleChunkedFile(n, filename, ctx) {
+		return
+	}
+
+	if n.NameSize > 0 && filename == "" {
+		filename = string(n.Name)
+		if ext == "" {
+			ext = path.Ext(filename)
+		}
+	}
+	mtype := ""
+	if n.MimeSize > 0 {
+		mt := string(n.Mime)
+		if !strings.HasPrefix(mt, "application/octet-stream") {
+			mtype = mt
+		}
+	}
+
+	if ext != ".gz" {
+		if n.IsGzipped() {
+			acceptEncoding := ctx.Request.Header.Peek("Accept-Encoding")
+			if acceptEncoding != nil && strings.Contains(string(acceptEncoding), "gzip") {
+				ctx.Response.Header.Set("Content-Encoding", "gzip")
+			} else {
+				if n.Data, err = util.UnGzipData(n.Data); err != nil {
+					glog.V(0).Infoln("ungzip error:", err, requestPath)
+				}
+			}
+		}
+	}
+
+	rs := fastConditionallyResizeImages(bytes.NewReader(n.Data), ext, ctx)
+
+	if e := fastWriteResponseContent(filename, mtype, rs, ctx); e != nil {
+		glog.V(2).Infoln("response write error:", e)
+	}
+
+}
+
+func (vs *VolumeServer) fastTryHandleChunkedFile(n *needle.Needle, fileName string, ctx *fasthttp.RequestCtx) (processed bool) {
+	if !n.IsChunkedManifest() || string(ctx.FormValue("cm")) == "false" {
+		return false
+	}
+
+	chunkManifest, e := operation.LoadChunkManifest(n.Data, n.IsGzipped())
+	if e != nil {
+		glog.V(0).Infof("load chunked manifest (%s) error: %v", string(ctx.Path()), e)
+		return false
+	}
+	if fileName == "" && chunkManifest.Name != "" {
+		fileName = chunkManifest.Name
+	}
+
+	ext := path.Ext(fileName)
+
+	mType := ""
+	if chunkManifest.Mime != "" {
+		mt := chunkManifest.Mime
+		if !strings.HasPrefix(mt, "application/octet-stream") {
+			mType = mt
+		}
+	}
+
+	ctx.Response.Header.Set("X-File-Store", "chunked")
+
+	chunkedFileReader := &operation.ChunkedFileReader{
+		Manifest: chunkManifest,
+		Master:   vs.GetMaster(),
+	}
+	defer chunkedFileReader.Close()
+
+	rs := fastConditionallyResizeImages(chunkedFileReader, ext, ctx)
+
+	if e := fastWriteResponseContent(fileName, mType, rs, ctx); e != nil {
+		glog.V(2).Infoln("response write error:", e)
+	}
+	return true
+}
+
+func fastConditionallyResizeImages(originalDataReaderSeeker io.ReadSeeker, ext string, ctx *fasthttp.RequestCtx) io.ReadSeeker {
+	rs := originalDataReaderSeeker
+	if len(ext) > 0 {
+		ext = strings.ToLower(ext)
+	}
+	if ext == ".png" || ext == ".jpg" || ext == ".jpeg" || ext == ".gif" {
+		width, height := 0, 0
+		formWidth, formHeight := ctx.FormValue("width"), ctx.FormValue("height")
+		if formWidth != nil {
+			width, _ = strconv.Atoi(string(formWidth))
+		}
+		if formHeight != nil {
+			height, _ = strconv.Atoi(string(formHeight))
+		}
+		formMode := ctx.FormValue("mode")
+		rs, _, _ = images.Resized(ext, originalDataReaderSeeker, width, height, string(formMode))
+	}
+	return rs
+}
+
+func fastWriteResponseContent(filename, mimeType string, rs io.ReadSeeker, ctx *fasthttp.RequestCtx) error {
+	totalSize, e := rs.Seek(0, 2)
+	if mimeType == "" {
+		if ext := path.Ext(filename); ext != "" {
+			mimeType = mime.TypeByExtension(ext)
+		}
+	}
+	if mimeType != "" {
+		ctx.Response.Header.Set("Content-Type", mimeType)
+	}
+	if filename != "" {
+		contentDisposition := "inline"
+		dlFormValue := ctx.FormValue("dl")
+		if dlFormValue != nil {
+			if dl, _ := strconv.ParseBool(string(dlFormValue)); dl {
+				contentDisposition = "attachment"
+			}
+		}
+		ctx.Response.Header.Set("Content-Disposition", contentDisposition+`; filename="`+fileNameEscaper.Replace(filename)+`"`)
+	}
+	ctx.Response.Header.Set("Accept-Ranges", "bytes")
+	if ctx.IsHead() {
+		ctx.Response.Header.Set("Content-Length", strconv.FormatInt(totalSize, 10))
+		return nil
+	}
+	rangeReq := ctx.FormValue("Range")
+	if rangeReq == nil {
+		ctx.Response.Header.Set("Content-Length", strconv.FormatInt(totalSize, 10))
+		if _, e = rs.Seek(0, 0); e != nil {
+			return e
+		}
+		_, e = io.Copy(ctx.Response.BodyWriter(), rs)
+		return e
+	}
+
+	//the rest is dealing with partial content request
+	//mostly copy from src/pkg/net/http/fs.go
+	ranges, err := parseRange(string(rangeReq), totalSize)
+	if err != nil {
+		ctx.Response.SetStatusCode(http.StatusRequestedRangeNotSatisfiable)
+		ctxError(ctx, err.Error(), http.StatusRequestedRangeNotSatisfiable)
+		return nil
+	}
+	if sumRangesSize(ranges) > totalSize {
+		// The total number of bytes in all the ranges
+		// is larger than the size of the file by
+		// itself, so this is probably an attack, or a
+		// dumb client.  Ignore the range request.
+		return nil
+	}
+	if len(ranges) == 0 {
+		return nil
+	}
+	if len(ranges) == 1 {
+		// RFC 2616, Section 14.16:
+		// "When an HTTP message includes the content of a single
+		// range (for example, a response to a request for a
+		// single range, or to a request for a set of ranges
+		// that overlap without any holes), this content is
+		// transmitted with a Content-Range header, and a
+		// Content-Length header showing the number of bytes
+		// actually transferred.
+		// ...
+		// A response to a request for a single range MUST NOT
+		// be sent using the multipart/byteranges media type."
+		ra := ranges[0]
+		ctx.Response.Header.Set("Content-Length", strconv.FormatInt(ra.length, 10))
+		ctx.Response.Header.Set("Content-Range", ra.contentRange(totalSize))
+		ctx.Response.SetStatusCode(http.StatusPartialContent)
+		if _, e = rs.Seek(ra.start, 0); e != nil {
+			return e
+		}
+
+		_, e = io.CopyN(ctx.Response.BodyWriter(), rs, ra.length)
+		return e
+	}
+	// process multiple ranges
+	for _, ra := range ranges {
+		if ra.start > totalSize {
+			ctxError(ctx, "Out of Range", http.StatusRequestedRangeNotSatisfiable)
+			return nil
+		}
+	}
+	sendSize := rangesMIMESize(ranges, mimeType, totalSize)
+	pr, pw := io.Pipe()
+	mw := multipart.NewWriter(pw)
+	ctx.Response.Header.Set("Content-Type", "multipart/byteranges; boundary="+mw.Boundary())
+	sendContent := pr
+	defer pr.Close() // cause writing goroutine to fail and exit if CopyN doesn't finish.
+	go func() {
+		for _, ra := range ranges {
+			part, e := mw.CreatePart(ra.mimeHeader(mimeType, totalSize))
+			if e != nil {
+				pw.CloseWithError(e)
+				return
+			}
+			if _, e = rs.Seek(ra.start, 0); e != nil {
+				pw.CloseWithError(e)
+				return
+			}
+			if _, e = io.CopyN(part, rs, ra.length); e != nil {
+				pw.CloseWithError(e)
+				return
+			}
+		}
+		mw.Close()
+		pw.Close()
+	}()
+	if ctx.Response.Header.Peek("Content-Encoding") == nil {
+		ctx.Response.Header.Set("Content-Length", strconv.FormatInt(sendSize, 10))
+	}
+	ctx.Response.Header.SetStatusCode(http.StatusPartialContent)
+	_, e = io.CopyN(ctx.Response.BodyWriter(), sendContent, sendSize)
+	return e
+}
+
+func fastSetEtag(ctx *fasthttp.RequestCtx, etag string) {
+	if etag != "" {
+		if strings.HasPrefix(etag, "\"") {
+			ctx.Response.Header.Set("ETag", etag)
+		} else {
+			ctx.Response.Header.Set("ETag", "\""+etag+"\"")
+		}
+	}
+}
+
+func ctxError(ctx *fasthttp.RequestCtx, error string, code int) {
+	ctx.Response.Header.Set("Content-Type", "text/plain; charset=utf-8")
+	ctx.Response.Header.Set("X-Content-Type-Options", "nosniff")
+	ctx.Response.SetStatusCode(code)
+	fmt.Fprintln(ctx.Response.BodyWriter(), error)
+}