/
mocknet.go
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/
mocknet.go
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package mocknet
import (
"context"
"errors"
"sync"
"testing"
"time"
datatransfer "github.com/filecoin-project/go-data-transfer/v2"
retrievaltypes "github.com/filecoin-project/go-retrieval-types"
"github.com/filecoin-project/lassie/pkg/internal/itest/testpeer"
"github.com/filecoin-project/lassie/pkg/types"
bsnet "github.com/ipfs/boxo/bitswap/network"
bssrv "github.com/ipfs/boxo/bitswap/server"
"github.com/ipfs/go-cid"
"github.com/ipld/go-ipld-prime"
"github.com/ipld/go-ipld-prime/datamodel"
cidlink "github.com/ipld/go-ipld-prime/linking/cid"
"github.com/ipni/go-libipni/metadata"
"github.com/libp2p/go-libp2p/core/host"
"github.com/libp2p/go-libp2p/core/peer"
lpmock "github.com/libp2p/go-libp2p/p2p/net/mock"
"github.com/multiformats/go-multicodec"
"github.com/stretchr/testify/require"
)
var QueryErrorTriggerCid = cid.MustParse("bafkqaalb")
type MockRetrievalNet struct {
ctx context.Context
t *testing.T
testPeerGenerator testpeer.TestPeerGenerator
RemoteEvents [][]datatransfer.Event
FinishedChan []chan struct{}
MN lpmock.Mocknet
Self host.Host
Remotes []testpeer.TestPeer
Source types.CandidateSource
}
func NewMockRetrievalNet(ctx context.Context, t *testing.T) *MockRetrievalNet {
mrn := &MockRetrievalNet{
ctx: ctx,
t: t,
Remotes: make([]testpeer.TestPeer, 0),
RemoteEvents: make([][]datatransfer.Event, 0),
FinishedChan: make([]chan struct{}, 0),
}
mrn.Source = &mockCandidateSource{mrn}
mrn.t.Cleanup(func() {
require.NoError(mrn.t, mrn.TearDown())
})
// Setup network
mrn.MN = lpmock.New()
mrn.testPeerGenerator = testpeer.NewTestPeerGenerator(mrn.ctx, mrn.t, mrn.MN, []bsnet.NetOpt{}, []bssrv.Option{})
h, err := mrn.MN.GenPeer()
mrn.Self = h
require.NoError(mrn.t, err)
return mrn
}
func (mrn *MockRetrievalNet) AddBitswapPeers(n int, opts ...testpeer.PeerOption) {
mrn.addPeers(mrn.testPeerGenerator.BitswapPeers(n, opts...))
}
func (mrn *MockRetrievalNet) AddGraphsyncPeers(n int, opts ...testpeer.PeerOption) {
mrn.addPeers(mrn.testPeerGenerator.GraphsyncPeers(n, opts...))
}
func (mrn *MockRetrievalNet) AddHttpPeers(n int, opts ...testpeer.PeerOption) {
mrn.addPeers(mrn.testPeerGenerator.HttpPeers(n, opts...))
}
func (mrn *MockRetrievalNet) addPeers(peers []testpeer.TestPeer) {
for i := 0; i < len(peers); i++ {
mrn.Remotes = append(mrn.Remotes, peers[i])
mrn.RemoteEvents = append(mrn.RemoteEvents, make([]datatransfer.Event, 0))
mrn.FinishedChan = append(mrn.FinishedChan, make(chan struct{}, 1))
}
}
func SetupRetrieval(t *testing.T, remote testpeer.TestPeer) chan []datatransfer.Event {
// Register DealProposal voucher type with automatic Pull acceptance
remoteDealValidator := &mockDealValidator{t: t, acceptPull: true}
require.NoError(t, remote.DatatransferServer.RegisterVoucherType(retrievaltypes.DealProposalType, remoteDealValidator))
remoteEvents := make([]datatransfer.Event, 0)
finishedChan := make(chan []datatransfer.Event, 1)
// Record remote events
subscriberRemote := func(event datatransfer.Event, channelState datatransfer.ChannelState) {
remoteEvents = append(remoteEvents, event)
if event.Code == datatransfer.CleanupComplete {
finishedChan <- remoteEvents
}
}
remote.DatatransferServer.SubscribeToEvents(subscriberRemote)
return finishedChan
}
func WaitForFinish(ctx context.Context, t *testing.T, finishChan chan []datatransfer.Event, timeout time.Duration) []datatransfer.Event {
var events []datatransfer.Event
require.Eventually(t, func() bool {
select {
case events = <-finishChan:
return true
case <-ctx.Done():
require.Fail(t, ctx.Err().Error())
return false
default:
return false
}
}, timeout, 100*time.Millisecond)
return events
}
func (mrn *MockRetrievalNet) TearDown() error {
var wg sync.WaitGroup
for _, h := range mrn.Remotes {
wg.Add(1)
go func(h testpeer.TestPeer) {
defer wg.Done()
if h.DatatransferServer != nil {
h.DatatransferServer.Stop(context.Background())
}
if h.BitswapServer != nil {
h.BitswapServer.Close()
}
if h.BitswapNetwork != nil {
h.BitswapNetwork.Stop()
}
if h.HttpServer != nil {
h.HttpServer.Close()
}
}(h)
}
wg.Wait()
return mrn.MN.Close()
}
type mockCandidateSource struct {
mrn *MockRetrievalNet
}
func (mcf *mockCandidateSource) findCandidates(ctx context.Context, cid cid.Cid) ([]types.RetrievalCandidate, error) {
candidates := make([]types.RetrievalCandidate, 0)
for _, h := range mcf.mrn.Remotes {
if _, has := h.Cids[cid]; has {
var md metadata.Metadata
switch h.Protocol {
case multicodec.TransportBitswap:
md = metadata.Default.New(metadata.Bitswap{})
case multicodec.TransportGraphsyncFilecoinv1:
md = metadata.Default.New(&metadata.GraphsyncFilecoinV1{PieceCID: cid})
case multicodec.TransportIpfsGatewayHttp:
md = metadata.Default.New(&metadata.IpfsGatewayHttp{})
}
candidates = append(candidates, types.RetrievalCandidate{MinerPeer: *h.AddrInfo(), RootCid: cid, Metadata: md})
}
}
return candidates, nil
}
func (mcf *mockCandidateSource) FindCandidates(ctx context.Context, cid cid.Cid, cb func(types.RetrievalCandidate)) error {
cand, _ := mcf.findCandidates(ctx, cid)
for _, c := range cand {
select {
case <-ctx.Done():
return ctx.Err()
default:
}
cb(c)
}
return nil
}
var _ datatransfer.RequestValidator = (*mockDealValidator)(nil)
type mockDealValidator struct {
t *testing.T
acceptPull bool
}
func (mdv *mockDealValidator) ValidatePush(
channel datatransfer.ChannelID,
sender peer.ID,
voucher datamodel.Node,
baseCid cid.Cid,
selector datamodel.Node,
) (datatransfer.ValidationResult, error) {
return datatransfer.ValidationResult{Accepted: false}, errors.New("not supported")
}
func (mdv *mockDealValidator) ValidatePull(
channel datatransfer.ChannelID,
receiver peer.ID,
voucher datamodel.Node,
baseCid cid.Cid,
selector datamodel.Node,
) (datatransfer.ValidationResult, error) {
if voucher.Kind() != datamodel.Kind_Map {
mdv.t.Logf("rejecting pull, bad voucher (!map)")
return datatransfer.ValidationResult{Accepted: false}, nil
}
pcn, err := voucher.LookupByString("PayloadCID")
if err != nil || pcn.Kind() != datamodel.Kind_Link {
mdv.t.Logf("rejecting pull, bad voucher PayloadCID")
return datatransfer.ValidationResult{Accepted: false}, nil
}
pcl, err := pcn.AsLink()
if err != nil || !baseCid.Equals(pcl.(cidlink.Link).Cid) {
mdv.t.Logf("rejecting pull, bad voucher PayloadCID (doesn't match)")
return datatransfer.ValidationResult{Accepted: false}, nil
}
pn, err := voucher.LookupByString("Params")
if err != nil || pn.Kind() != datamodel.Kind_Map {
mdv.t.Logf("rejecting pull, bad voucher Params")
return datatransfer.ValidationResult{Accepted: false}, nil
}
sn, err := pn.LookupByString("Selector")
if err != nil || !ipld.DeepEqual(sn, selector) {
mdv.t.Logf("rejecting pull, bad voucher Selector")
return datatransfer.ValidationResult{Accepted: false}, nil
}
return datatransfer.ValidationResult{Accepted: mdv.acceptPull}, nil
}
func (mdv *mockDealValidator) ValidateRestart(
channelID datatransfer.ChannelID,
channel datatransfer.ChannelState,
) (datatransfer.ValidationResult, error) {
return datatransfer.ValidationResult{Accepted: false}, errors.New("not supported")
}