cerc-io/go-ethereum
13
0
Fork 0
Code Issues 9 Pull Requests Packages Projects Releases 66 Wiki Activity

swarm/network, swarm/storage: Preserve opentracing contexts (#19022)

Browse Source
This commit is contained in:
lash 2019-02-08 16:57:48 +01:00 committed by Anton Evangelatov
parent 0436412412
commit 0c10d37606
10 changed files with 123 additions and 108 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
swarm/network/fetcher.go
View File

@ -52,6 +52,7 @@ type Fetcher struct {
requestC chan uint8 // channel for incoming requests (with the hopCount value in it)
searchTimeout time.Duration
skipCheck bool
ctx context.Context
}
type Request struct {
@ -109,14 +110,14 @@ func NewFetcherFactory(request RequestFunc, skipCheck bool) *FetcherFactory {
// contain the peers which are actively requesting this chunk, to make sure we
// don't request back the chunks from them.
// The created Fetcher is started and returned.
func (f *FetcherFactory) New(ctx context.Context, source storage.Address, peersToSkip *sync.Map) storage.NetFetcher {
fetcher := NewFetcher(source, f.request, f.skipCheck)
go fetcher.run(ctx, peersToSkip)
func (f *FetcherFactory) New(ctx context.Context, source storage.Address, peers *sync.Map) storage.NetFetcher {
fetcher := NewFetcher(ctx, source, f.request, f.skipCheck)
go fetcher.run(peers)
return fetcher
}
// NewFetcher creates a new Fetcher for the given chunk address using the given request function.
func NewFetcher(addr storage.Address, rf RequestFunc, skipCheck bool) *Fetcher {
func NewFetcher(ctx context.Context, addr storage.Address, rf RequestFunc, skipCheck bool) *Fetcher {
return &Fetcher{
addr: addr,
protoRequestFunc: rf,
@ -124,14 +125,15 @@ func NewFetcher(addr storage.Address, rf RequestFunc, skipCheck bool) *Fetcher {
requestC: make(chan uint8),
searchTimeout: defaultSearchTimeout,
skipCheck: skipCheck,
ctx: ctx,
}
}
// Offer is called when an upstream peer offers the chunk via syncing as part of `OfferedHashesMsg` and the node does not have the chunk locally.
func (f *Fetcher) Offer(ctx context.Context, source *enode.ID) {
func (f *Fetcher) Offer(source *enode.ID) {
// First we need to have this select to make sure that we return if context is done
select {
case <-ctx.Done():
case <-f.ctx.Done():
return
default:
}
@ -140,15 +142,15 @@ func (f *Fetcher) Offer(ctx context.Context, source *enode.ID) {
// push to offerC instead if offerC is available (see number 2 in https://golang.org/ref/spec#Select_statements)
select {
case f.offerC <- source:
case <-ctx.Done():
case <-f.ctx.Done():
}
}
// Request is called when an upstream peer request the chunk as part of `RetrieveRequestMsg`, or from a local request through FileStore, and the node does not have the chunk locally.
func (f *Fetcher) Request(ctx context.Context, hopCount uint8) {
func (f *Fetcher) Request(hopCount uint8) {
// First we need to have this select to make sure that we return if context is done
select {
case <-ctx.Done():
case <-f.ctx.Done():
return
default:
}
@ -162,13 +164,13 @@ func (f *Fetcher) Request(ctx context.Context, hopCount uint8) {
// push to offerC instead if offerC is available (see number 2 in https://golang.org/ref/spec#Select_statements)
select {
case f.requestC <- hopCount + 1:
case <-ctx.Done():
case <-f.ctx.Done():
}
}
// start prepares the Fetcher
// it keeps the Fetcher alive within the lifecycle of the passed context
func (f *Fetcher) run(ctx context.Context, peers *sync.Map) {
func (f *Fetcher) run(peers *sync.Map) {
var (
doRequest bool // determines if retrieval is initiated in the current iteration
wait *time.Timer // timer for search timeout
@ -219,7 +221,7 @@ func (f *Fetcher) run(ctx context.Context, peers *sync.Map) {
doRequest = requested
// all Fetcher context closed, can quit
case <-ctx.Done():
case <-f.ctx.Done():
log.Trace("terminate fetcher", "request addr", f.addr)
// TODO: send cancellations to all peers left over in peers map (i.e., those we requested from)
return
@ -228,7 +230,7 @@ func (f *Fetcher) run(ctx context.Context, peers *sync.Map) {
// need to issue a new request
if doRequest {
var err error
sources, err = f.doRequest(ctx, gone, peers, sources, hopCount)
sources, err = f.doRequest(gone, peers, sources, hopCount)
if err != nil {
log.Info("unable to request", "request addr", f.addr, "err", err)
}
@ -266,7 +268,7 @@ func (f *Fetcher) run(ctx context.Context, peers *sync.Map) {
// * the peer's address is added to the set of peers to skip
// * the peer's address is removed from prospective sources, and
// * a go routine is started that reports on the gone channel if the peer is disconnected (or terminated their streamer)
func (f *Fetcher) doRequest(ctx context.Context, gone chan *enode.ID, peersToSkip *sync.Map, sources []*enode.ID, hopCount uint8) ([]*enode.ID, error) {
func (f *Fetcher) doRequest(gone chan *enode.ID, peersToSkip *sync.Map, sources []*enode.ID, hopCount uint8) ([]*enode.ID, error) {
var i int
var sourceID *enode.ID
var quit chan struct{}
@ -283,7 +285,7 @@ func (f *Fetcher) doRequest(ctx context.Context, gone chan *enode.ID, peersToSki
for i = 0; i < len(sources); i++ {
req.Source = sources[i]
var err error
sourceID, quit, err = f.protoRequestFunc(ctx, req)
sourceID, quit, err = f.protoRequestFunc(f.ctx, req)
if err == nil {
// remove the peer from known sources
// Note: we can modify the source although we are looping on it, because we break from the loop immediately
@ -297,7 +299,7 @@ func (f *Fetcher) doRequest(ctx context.Context, gone chan *enode.ID, peersToSki
if !foundSource {
req.Source = nil
var err error
sourceID, quit, err = f.protoRequestFunc(ctx, req)
sourceID, quit, err = f.protoRequestFunc(f.ctx, req)
if err != nil {
// if no peers found to request from
return sources, err
@ -314,7 +316,7 @@ func (f *Fetcher) doRequest(ctx context.Context, gone chan *enode.ID, peersToSki
select {
case <-quit:
gone <- sourceID
case <-ctx.Done():
case <-f.ctx.Done():
}
}()
return sources, nil

115
swarm/network/fetcher_test.go
View File

@ -69,7 +69,11 @@ func (m *mockRequester) doRequest(ctx context.Context, request *Request) (*enode
func TestFetcherSingleRequest(t *testing.T) {
requester := newMockRequester()
addr := make([]byte, 32)
fetcher := NewFetcher(addr, requester.doRequest, true)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
fetcher := NewFetcher(ctx, addr, requester.doRequest, true)
peers := []string{"a", "b", "c", "d"}
peersToSkip := &sync.Map{}
@ -77,13 +81,9 @@ func TestFetcherSingleRequest(t *testing.T) {
peersToSkip.Store(p, time.Now())
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
go fetcher.run(peersToSkip)
go fetcher.run(ctx, peersToSkip)
rctx := context.Background()
fetcher.Request(rctx, 0)
fetcher.Request(0)
select {
case request := <-requester.requestC:
@ -115,20 +115,19 @@ func TestFetcherSingleRequest(t *testing.T) {
func TestFetcherCancelStopsFetcher(t *testing.T) {
requester := newMockRequester()
addr := make([]byte, 32)
fetcher := NewFetcher(addr, requester.doRequest, true)
peersToSkip := &sync.Map{}
ctx, cancel := context.WithCancel(context.Background())
fetcher := NewFetcher(ctx, addr, requester.doRequest, true)
peersToSkip := &sync.Map{}
// we start the fetcher, and then we immediately cancel the context
go fetcher.run(ctx, peersToSkip)
go fetcher.run(peersToSkip)
cancel()
rctx, rcancel := context.WithTimeout(ctx, 100*time.Millisecond)
defer rcancel()
// we call Request with an active context
fetcher.Request(rctx, 0)
fetcher.Request(0)
// fetcher should not initiate request, we can only check by waiting a bit and making sure no request is happening
select {
@ -140,23 +139,23 @@ func TestFetcherCancelStopsFetcher(t *testing.T) {
// TestFetchCancelStopsRequest tests that calling a Request function with a cancelled context does not initiate a request
func TestFetcherCancelStopsRequest(t *testing.T) {
t.Skip("since context is now per fetcher, this test is likely redundant")
requester := newMockRequester(100 * time.Millisecond)
addr := make([]byte, 32)
fetcher := NewFetcher(addr, requester.doRequest, true)
peersToSkip := &sync.Map{}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// we start the fetcher with an active context
go fetcher.run(ctx, peersToSkip)
fetcher := NewFetcher(ctx, addr, requester.doRequest, true)
rctx, rcancel := context.WithCancel(context.Background())
rcancel()
peersToSkip := &sync.Map{}
// we start the fetcher with an active context
go fetcher.run(peersToSkip)
// we call Request with a cancelled context
fetcher.Request(rctx, 0)
fetcher.Request(0)
// fetcher should not initiate request, we can only check by waiting a bit and making sure no request is happening
select {
@ -166,8 +165,7 @@ func TestFetcherCancelStopsRequest(t *testing.T) {
}
// if there is another Request with active context, there should be a request, because the fetcher itself is not cancelled
rctx = context.Background()
fetcher.Request(rctx, 0)
fetcher.Request(0)
select {
case <-requester.requestC:
@ -182,19 +180,19 @@ func TestFetcherCancelStopsRequest(t *testing.T) {
func TestFetcherOfferUsesSource(t *testing.T) {
requester := newMockRequester(100 * time.Millisecond)
addr := make([]byte, 32)
fetcher := NewFetcher(addr, requester.doRequest, true)
peersToSkip := &sync.Map{}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// start the fetcher
go fetcher.run(ctx, peersToSkip)
fetcher := NewFetcher(ctx, addr, requester.doRequest, true)
peersToSkip := &sync.Map{}
// start the fetcher
go fetcher.run(peersToSkip)
rctx := context.Background()
// call the Offer function with the source peer
fetcher.Offer(rctx, &sourcePeerID)
fetcher.Offer(&sourcePeerID)
// fetcher should not initiate request
select {
@ -204,8 +202,7 @@ func TestFetcherOfferUsesSource(t *testing.T) {
}
// call Request after the Offer
rctx = context.Background()
fetcher.Request(rctx, 0)
fetcher.Request(0)
// there should be exactly 1 request coming from fetcher
var request *Request
@ -234,19 +231,19 @@ func TestFetcherOfferUsesSource(t *testing.T) {
func TestFetcherOfferAfterRequestUsesSourceFromContext(t *testing.T) {
requester := newMockRequester(100 * time.Millisecond)
addr := make([]byte, 32)
fetcher := NewFetcher(addr, requester.doRequest, true)
peersToSkip := &sync.Map{}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
fetcher := NewFetcher(ctx, addr, requester.doRequest, true)
peersToSkip := &sync.Map{}
// start the fetcher
go fetcher.run(ctx, peersToSkip)
go fetcher.run(peersToSkip)
// call Request first
rctx := context.Background()
fetcher.Request(rctx, 0)
fetcher.Request(0)
// there should be a request coming from fetcher
var request *Request
@ -260,7 +257,7 @@ func TestFetcherOfferAfterRequestUsesSourceFromContext(t *testing.T) {
}
// after the Request call Offer
fetcher.Offer(context.Background(), &sourcePeerID)
fetcher.Offer(&sourcePeerID)
// there should be a request coming from fetcher
select {
@ -283,21 +280,21 @@ func TestFetcherOfferAfterRequestUsesSourceFromContext(t *testing.T) {
func TestFetcherRetryOnTimeout(t *testing.T) {
requester := newMockRequester()
addr := make([]byte, 32)
fetcher := NewFetcher(addr, requester.doRequest, true)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
fetcher := NewFetcher(ctx, addr, requester.doRequest, true)
// set searchTimeOut to low value so the test is quicker
fetcher.searchTimeout = 250 * time.Millisecond
peersToSkip := &sync.Map{}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// start the fetcher
go fetcher.run(ctx, peersToSkip)
go fetcher.run(peersToSkip)
// call the fetch function with an active context
rctx := context.Background()
fetcher.Request(rctx, 0)
fetcher.Request(0)
// after 100ms the first request should be initiated
time.Sleep(100 * time.Millisecond)
@ -339,7 +336,7 @@ func TestFetcherFactory(t *testing.T) {
fetcher := fetcherFactory.New(context.Background(), addr, peersToSkip)
fetcher.Request(context.Background(), 0)
fetcher.Request(0)
// check if the created fetchFunction really starts a fetcher and initiates a request
select {
@ -353,7 +350,11 @@ func TestFetcherFactory(t *testing.T) {
func TestFetcherRequestQuitRetriesRequest(t *testing.T) {
requester := newMockRequester()
addr := make([]byte, 32)
fetcher := NewFetcher(addr, requester.doRequest, true)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
fetcher := NewFetcher(ctx, addr, requester.doRequest, true)
// make sure the searchTimeout is long so it is sure the request is not
// retried because of timeout
@ -361,13 +362,9 @@ func TestFetcherRequestQuitRetriesRequest(t *testing.T) {
peersToSkip := &sync.Map{}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
go fetcher.run(peersToSkip)
go fetcher.run(ctx, peersToSkip)
rctx := context.Background()
fetcher.Request(rctx, 0)
fetcher.Request(0)
select {
case <-requester.requestC:
@ -460,17 +457,15 @@ func TestRequestSkipPeerPermanent(t *testing.T) {
func TestFetcherMaxHopCount(t *testing.T) {
requester := newMockRequester()
addr := make([]byte, 32)
fetcher := NewFetcher(addr, requester.doRequest, true)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
fetcher := NewFetcher(ctx, addr, requester.doRequest, true)
peersToSkip := &sync.Map{}
go fetcher.run(ctx, peersToSkip)
rctx := context.Background()
fetcher.Request(rctx, maxHopCount)
go fetcher.run(peersToSkip)
// if hopCount is already at max no request should be initiated
select {

7
swarm/network/stream/delivery.go
View File

@ -144,7 +144,6 @@ func (d *Delivery) handleRetrieveRequestMsg(ctx context.Context, sp *Peer, req *
ctx, osp = spancontext.StartSpan(
ctx,
"retrieve.request")
defer osp.Finish()
s, err := sp.getServer(NewStream(swarmChunkServerStreamName, "", true))
if err != nil {
@ -167,6 +166,7 @@ func (d *Delivery) handleRetrieveRequestMsg(ctx context.Context, sp *Peer, req *
}()
go func() {
defer osp.Finish()
chunk, err := d.chunkStore.Get(ctx, req.Addr)
if err != nil {
retrieveChunkFail.Inc(1)
@ -213,11 +213,12 @@ func (d *Delivery) handleChunkDeliveryMsg(ctx context.Context, sp *Peer, req *Ch
ctx, osp = spancontext.StartSpan(
ctx,
"chunk.delivery")
defer osp.Finish()
processReceivedChunksCount.Inc(1)
go func() {
defer osp.Finish()
req.peer = sp
err := d.chunkStore.Put(ctx, storage.NewChunk(req.Addr, req.SData))
if err != nil {
@ -271,7 +272,7 @@ func (d *Delivery) RequestFromPeers(ctx context.Context, req *network.Request) (
Addr: req.Addr,
SkipCheck: req.SkipCheck,
HopCount: req.HopCount,
}, Top)
}, Top, "request.from.peers")
if err != nil {
return nil, nil, err
}

2
swarm/network/stream/messages.go
View File

@ -300,7 +300,7 @@ func (p *Peer) handleOfferedHashesMsg(ctx context.Context, req *OfferedHashesMsg
return
}
log.Trace("sending want batch", "peer", p.ID(), "stream", msg.Stream, "from", msg.From, "to", msg.To)
err := p.SendPriority(ctx, msg, c.priority)
err := p.SendPriority(ctx, msg, c.priority, "")
if err != nil {
log.Warn("SendPriority error", "err", err)
}

26
swarm/network/stream/peer.go
View File

@ -65,6 +65,7 @@ type Peer struct {
// on creating a new client in offered hashes handler.
clientParams map[Stream]*clientParams
quit chan struct{}
spans sync.Map
}
type WrappedPriorityMsg struct {
@ -82,10 +83,16 @@ func NewPeer(peer *protocols.Peer, streamer *Registry) *Peer {
clients: make(map[Stream]*client),
clientParams: make(map[Stream]*clientParams),
quit: make(chan struct{}),
spans: sync.Map{},
}
ctx, cancel := context.WithCancel(context.Background())
go p.pq.Run(ctx, func(i interface{}) {
wmsg := i.(WrappedPriorityMsg)
defer p.spans.Delete(wmsg.Context)
sp, ok := p.spans.Load(wmsg.Context)
if ok {
defer sp.(opentracing.Span).Finish()
}
err := p.Send(wmsg.Context, wmsg.Msg)
if err != nil {
log.Error("Message send error, dropping peer", "peer", p.ID(), "err", err)
@ -130,7 +137,6 @@ func NewPeer(peer *protocols.Peer, streamer *Registry) *Peer {
// Deliver sends a storeRequestMsg protocol message to the peer
// Depending on the `syncing` parameter we send different message types
func (p *Peer) Deliver(ctx context.Context, chunk storage.Chunk, priority uint8, syncing bool) error {
var sp opentracing.Span
var msg interface{}
spanName := "send.chunk.delivery"
@ -151,18 +157,22 @@ func (p *Peer) Deliver(ctx context.Context, chunk storage.Chunk, priority uint8,
}
spanName += ".retrieval"
}
ctx, sp = spancontext.StartSpan(
ctx,
spanName)
defer sp.Finish()
return p.SendPriority(ctx, msg, priority)
return p.SendPriority(ctx, msg, priority, spanName)
}
// SendPriority sends message to the peer using the outgoing priority queue
func (p *Peer) SendPriority(ctx context.Context, msg interface{}, priority uint8) error {
func (p *Peer) SendPriority(ctx context.Context, msg interface{}, priority uint8, traceId string) error {
defer metrics.GetOrRegisterResettingTimer(fmt.Sprintf("peer.sendpriority_t.%d", priority), nil).UpdateSince(time.Now())
metrics.GetOrRegisterCounter(fmt.Sprintf("peer.sendpriority.%d", priority), nil).Inc(1)
if traceId != "" {
var sp opentracing.Span
ctx, sp = spancontext.StartSpan(
ctx,
traceId,
)
p.spans.Store(ctx, sp)
}
wmsg := WrappedPriorityMsg{
Context: ctx,
Msg: msg,
@ -205,7 +215,7 @@ func (p *Peer) SendOfferedHashes(s *server, f, t uint64) error {
Stream: s.stream,
}
log.Trace("Swarm syncer offer batch", "peer", p.ID(), "stream", s.stream, "len", len(hashes), "from", from, "to", to)
return p.SendPriority(ctx, msg, s.priority)
return p.SendPriority(ctx, msg, s.priority, "send.offered.hashes")
}
func (p *Peer) getServer(s Stream) (*server, error) {

5
swarm/network/stream/stream.go
View File

@ -359,7 +359,7 @@ func (r *Registry) Subscribe(peerId enode.ID, s Stream, h *Range, priority uint8
}
log.Debug("Subscribe ", "peer", peerId, "stream", s, "history", h)
return peer.SendPriority(context.TODO(), msg, priority)
return peer.SendPriority(context.TODO(), msg, priority, "")
}
func (r *Registry) Unsubscribe(peerId enode.ID, s Stream) error {
@ -729,7 +729,8 @@ func (c *client) batchDone(p *Peer, req *OfferedHashesMsg, hashes []byte) error
if err != nil {
return err
}
if err := p.SendPriority(context.TODO(), tp, c.priority); err != nil {
if err := p.SendPriority(context.TODO(), tp, c.priority, ""); err != nil {
return err
}
if c.to > 0 && tp.Takeover.End >= c.to {

16
swarm/storage/chunker.go
View File

@ -465,7 +465,7 @@ func (r *LazyChunkReader) ReadAt(b []byte, off int64) (read int, err error) {
length *= r.chunkSize
}
wg.Add(1)
go r.join(b, off, off+length, depth, treeSize/r.branches, r.chunkData, &wg, errC, quitC)
go r.join(cctx, b, off, off+length, depth, treeSize/r.branches, r.chunkData, &wg, errC, quitC)
go func() {
wg.Wait()
close(errC)
@ -485,7 +485,7 @@ func (r *LazyChunkReader) ReadAt(b []byte, off int64) (read int, err error) {
return len(b), nil
}
func (r *LazyChunkReader) join(b []byte, off int64, eoff int64, depth int, treeSize int64, chunkData ChunkData, parentWg *sync.WaitGroup, errC chan error, quitC chan bool) {
func (r *LazyChunkReader) join(ctx context.Context, b []byte, off int64, eoff int64, depth int, treeSize int64, chunkData ChunkData, parentWg *sync.WaitGroup, errC chan error, quitC chan bool) {
defer parentWg.Done()
// find appropriate block level
for chunkData.Size() < uint64(treeSize) && depth > r.depth {
@ -533,7 +533,7 @@ func (r *LazyChunkReader) join(b []byte, off int64, eoff int64, depth int, treeS
go func(j int64) {
childAddress := chunkData[8+j*r.hashSize : 8+(j+1)*r.hashSize]
startTime := time.Now()
chunkData, err := r.getter.Get(r.ctx, Reference(childAddress))
chunkData, err := r.getter.Get(ctx, Reference(childAddress))
if err != nil {
metrics.GetOrRegisterResettingTimer("lcr.getter.get.err", nil).UpdateSince(startTime)
log.Debug("lazychunkreader.join", "key", fmt.Sprintf("%x", childAddress), "err", err)
@ -554,7 +554,7 @@ func (r *LazyChunkReader) join(b []byte, off int64, eoff int64, depth int, treeS
if soff < off {
soff = off
}
r.join(b[soff-off:seoff-off], soff-roff, seoff-roff, depth-1, treeSize/r.branches, chunkData, wg, errC, quitC)
r.join(ctx, b[soff-off:seoff-off], soff-roff, seoff-roff, depth-1, treeSize/r.branches, chunkData, wg, errC, quitC)
}(i)
} //for
}
@ -581,6 +581,11 @@ var errWhence = errors.New("Seek: invalid whence")
var errOffset = errors.New("Seek: invalid offset")
func (r *LazyChunkReader) Seek(offset int64, whence int) (int64, error) {
cctx, sp := spancontext.StartSpan(
r.ctx,
"lcr.seek")
defer sp.Finish()
log.Debug("lazychunkreader.seek", "key", r.addr, "offset", offset)
switch whence {
default:
@ -590,8 +595,9 @@ func (r *LazyChunkReader) Seek(offset int64, whence int) (int64, error) {
case 1:
offset += r.off
case 2:
if r.chunkData == nil { //seek from the end requires rootchunk for size. call Size first
_, err := r.Size(context.TODO(), nil)
_, err := r.Size(cctx, nil)
if err != nil {
return 0, fmt.Errorf("can't get size: %v", err)
}

4
swarm/storage/feed/testutil.go
View File

@ -40,9 +40,9 @@ func (t *TestHandler) Close() {
type mockNetFetcher struct{}
func (m *mockNetFetcher) Request(ctx context.Context, hopCount uint8) {
func (m *mockNetFetcher) Request(hopCount uint8) {
}
func (m *mockNetFetcher) Offer(ctx context.Context, source *enode.ID) {
func (m *mockNetFetcher) Offer(source *enode.ID) {
}
func newFakeNetFetcher(context.Context, storage.Address, *sync.Map) storage.NetFetcher {

16
swarm/storage/netstore.go
View File

@ -34,8 +34,8 @@ type (
)
type NetFetcher interface {
Request(ctx context.Context, hopCount uint8)
Offer(ctx context.Context, source *enode.ID)
Request(hopCount uint8)
Offer(source *enode.ID)
}
// NetStore is an extension of local storage
@ -150,7 +150,7 @@ func (n *NetStore) get(ctx context.Context, ref Address) (Chunk, func(context.Co
}
// The chunk is not available in the LocalStore, let's get the fetcher for it, or create a new one
// if it doesn't exist yet
f := n.getOrCreateFetcher(ref)
f := n.getOrCreateFetcher(ctx, ref)
// If the caller needs the chunk, it has to use the returned fetch function to get it
return nil, f.Fetch, nil
}
@ -168,7 +168,7 @@ func (n *NetStore) Has(ctx context.Context, ref Address) bool {
// getOrCreateFetcher attempts at retrieving an existing fetchers
// if none exists, creates one and saves it in the fetchers cache
// caller must hold the lock
func (n *NetStore) getOrCreateFetcher(ref Address) *fetcher {
func (n *NetStore) getOrCreateFetcher(ctx context.Context, ref Address) *fetcher {
if f := n.getFetcher(ref); f != nil {
return f
}
@ -176,7 +176,7 @@ func (n *NetStore) getOrCreateFetcher(ref Address) *fetcher {
// no fetcher for the given address, we have to create a new one
key := hex.EncodeToString(ref)
// create the context during which fetching is kept alive
ctx, cancel := context.WithTimeout(context.Background(), fetcherTimeout)
cctx, cancel := context.WithTimeout(ctx, fetcherTimeout)
// destroy is called when all requests finish
destroy := func() {
// remove fetcher from fetchers
@ -190,7 +190,7 @@ func (n *NetStore) getOrCreateFetcher(ref Address) *fetcher {
// the peers which requested the chunk should not be requested to deliver it.
peers := &sync.Map{}
fetcher := newFetcher(ref, n.NewNetFetcherFunc(ctx, ref, peers), destroy, peers, n.closeC)
fetcher := newFetcher(ref, n.NewNetFetcherFunc(cctx, ref, peers), destroy, peers, n.closeC)
n.fetchers.Add(key, fetcher)
return fetcher
@ -278,9 +278,9 @@ func (f *fetcher) Fetch(rctx context.Context) (Chunk, error) {
if err := source.UnmarshalText([]byte(sourceIF.(string))); err != nil {
return nil, err
}
f.netFetcher.Offer(rctx, &source)
f.netFetcher.Offer(&source)
} else {
f.netFetcher.Request(rctx, hopCount)
f.netFetcher.Request(hopCount)
}
// wait until either the chunk is delivered or the context is done

4
swarm/storage/netstore_test.go
View File

@ -46,12 +46,12 @@ type mockNetFetcher struct {
mu sync.Mutex
}
func (m *mockNetFetcher) Offer(ctx context.Context, source *enode.ID) {
func (m *mockNetFetcher) Offer(source *enode.ID) {
m.offerCalled = true
m.sources = append(m.sources, source)
}
func (m *mockNetFetcher) Request(ctx context.Context, hopCount uint8) {
func (m *mockNetFetcher) Request(hopCount uint8) {
m.mu.Lock()
defer m.mu.Unlock()