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bytes.go
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/
bytes.go
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// Copyright 2020 The Swarm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package api
import (
"context"
"encoding/binary"
"errors"
"fmt"
"net/http"
"strconv"
"time"
"github.com/ethersphere/bee/pkg/cac"
"github.com/ethersphere/bee/pkg/jsonhttp"
"github.com/ethersphere/bee/pkg/postage"
"github.com/ethersphere/bee/pkg/sctx"
"github.com/ethersphere/bee/pkg/storage"
"github.com/ethersphere/bee/pkg/swarm"
"github.com/ethersphere/bee/pkg/tags"
"github.com/ethersphere/bee/pkg/tracing"
"github.com/ethersphere/bee/pkg/util/ioutil"
"github.com/gorilla/mux"
)
type bytesPostResponse struct {
Reference swarm.Address `json:"reference"`
}
// bytesUploadHandler handles upload of raw binary data of arbitrary length.
func (s *Service) bytesUploadHandler(w http.ResponseWriter, r *http.Request) {
logger := tracing.NewLoggerWithTraceID(r.Context(), s.logger.WithName("post_bytes").Build())
headers := struct {
ContentType string `map:"Content-Type" validate:"excludes=multipart/form-data"`
SwarmTag string `map:"Swarm-Tag"`
}{}
if response := s.mapStructure(r.Header, &headers); response != nil {
response("invalid header params", logger, w)
return
}
putter, wait, err := s.newStamperPutter(r)
if err != nil {
logger.Debug("get putter failed", "error", err)
logger.Error(nil, "get putter failed")
jsonhttp.BadRequest(w, nil)
return
}
tag, created, err := s.getOrCreateTag(headers.SwarmTag)
if err != nil {
logger.Debug("get or create tag failed", "error", err)
logger.Error(nil, "get or create tag failed")
jsonhttp.InternalServerError(w, "cannot get or create tag")
return
}
if !created {
// only in the case when tag is sent via header (i.e. not created by this request)
if estimatedTotalChunks := requestCalculateNumberOfChunks(r); estimatedTotalChunks > 0 {
err = tag.IncN(tags.TotalChunks, estimatedTotalChunks)
if err != nil {
logger.Debug("increment tag failed", "error", err)
logger.Error(nil, "increment tag failed")
jsonhttp.InternalServerError(w, "increment tag")
return
}
}
}
// Add the tag to the context
ctx := sctx.SetTag(r.Context(), tag)
p := requestPipelineFn(putter, r)
ctx, cancel := context.WithCancel(ctx)
defer cancel()
pr := ioutil.TimeoutReader(ctx, r.Body, time.Minute, func(n uint64) {
logger.Error(nil, "idle read timeout exceeded")
logger.Debug("idle read timeout exceeded", "bytes_read", n)
cancel()
})
address, err := p(ctx, pr)
if err != nil {
logger.Debug("split write all failed", "error", err)
logger.Error(nil, "split write all failed")
switch {
case errors.Is(err, postage.ErrBucketFull):
jsonhttp.PaymentRequired(w, "batch is overissued")
default:
jsonhttp.InternalServerError(w, "split write all failed")
}
return
}
if err = wait(); err != nil {
logger.Debug("sync chunks failed", "error", err)
logger.Error(nil, "sync chunks failed")
jsonhttp.InternalServerError(w, "sync chunks failed")
return
}
if created {
_, err = tag.DoneSplit(address)
if err != nil {
logger.Debug("done split failed", "error", err)
logger.Error(nil, "done split failed")
jsonhttp.InternalServerError(w, "done split filed")
return
}
}
if requestPin(r) {
if err := s.pinning.CreatePin(ctx, address, false); err != nil {
logger.Debug("pin creation failed", "address", address, "error", err)
logger.Error(nil, "pin creation failed")
jsonhttp.InternalServerError(w, "create ping failed")
return
}
}
w.Header().Set(SwarmTagHeader, fmt.Sprint(tag.Uid))
w.Header().Set("Access-Control-Expose-Headers", SwarmTagHeader)
jsonhttp.Created(w, bytesPostResponse{
Reference: address,
})
}
// bytesGetHandler handles retrieval of raw binary data of arbitrary length.
func (s *Service) bytesGetHandler(w http.ResponseWriter, r *http.Request) {
logger := tracing.NewLoggerWithTraceID(r.Context(), s.logger.WithName("get_bytes_by_address").Build())
paths := struct {
Address swarm.Address `map:"address,resolve" validate:"required"`
}{}
if response := s.mapStructure(mux.Vars(r), &paths); response != nil {
response("invalid path params", logger, w)
return
}
additionalHeaders := http.Header{
"Content-Type": {"application/octet-stream"},
}
s.downloadHandler(logger, w, r, paths.Address, additionalHeaders, true)
}
func (s *Service) bytesHeadHandler(w http.ResponseWriter, r *http.Request) {
logger := tracing.NewLoggerWithTraceID(r.Context(), s.logger.WithName("head_bytes_by_address").Build())
paths := struct {
Address swarm.Address `map:"address,resolve" validate:"required"`
}{}
if response := s.mapStructure(mux.Vars(r), &paths); response != nil {
response("invalid path params", logger, w)
return
}
ch, err := s.storer.Get(r.Context(), storage.ModeGetRequest, paths.Address)
if err != nil {
logger.Debug("get root chunk failed", "chunk_address", paths.Address, "error", err)
logger.Error(nil, "get rook chunk failed")
w.WriteHeader(http.StatusNotFound)
return
}
w.Header().Add("Access-Control-Expose-Headers", "Accept-Ranges, Content-Encoding")
w.Header().Add("Content-Type", "application/octet-stream")
var span int64
if cac.Valid(ch) {
span = int64(binary.LittleEndian.Uint64(ch.Data()[:swarm.SpanSize]))
} else {
// soc
span = int64(len(ch.Data()))
}
w.Header().Add("Content-Length", strconv.FormatInt(span, 10))
w.WriteHeader(http.StatusOK) // HEAD requests do not write a body
}