lotus/graphsync/main.go

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package main
import (
"context"
"crypto/rand"
"fmt"
"io"
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goruntime "runtime"
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"time"
"github.com/ipfs/go-blockservice"
"github.com/ipfs/go-cid"
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ds "github.com/ipfs/go-datastore"
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dss "github.com/ipfs/go-datastore/sync"
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"github.com/ipfs/go-graphsync/storeutil"
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"github.com/ipfs/go-ipfs-blockstore"
"github.com/ipfs/go-ipfs-chunker"
"github.com/ipfs/go-ipfs-exchange-offline"
"github.com/ipfs/go-ipfs-files"
"github.com/ipfs/go-ipld-format"
"github.com/ipfs/go-merkledag"
"github.com/ipfs/go-unixfs/importer/balanced"
ihelper "github.com/ipfs/go-unixfs/importer/helpers"
"github.com/ipld/go-ipld-prime/linking/cid"
"github.com/ipld/go-ipld-prime/node/basic"
"github.com/ipld/go-ipld-prime/traversal/selector"
"github.com/ipld/go-ipld-prime/traversal/selector/builder"
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"github.com/libp2p/go-libp2p-core/metrics"
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"github.com/testground/sdk-go/network"
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"golang.org/x/sync/errgroup"
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gs "github.com/ipfs/go-graphsync"
gsi "github.com/ipfs/go-graphsync/impl"
gsnet "github.com/ipfs/go-graphsync/network"
"github.com/libp2p/go-libp2p"
"github.com/libp2p/go-libp2p-core/host"
"github.com/libp2p/go-libp2p-core/peer"
"github.com/libp2p/go-libp2p-noise"
"github.com/libp2p/go-libp2p-secio"
tls "github.com/libp2p/go-libp2p-tls"
"github.com/testground/sdk-go/run"
"github.com/testground/sdk-go/runtime"
"github.com/testground/sdk-go/sync"
)
var testcases = map[string]interface{}{
"stress": run.InitializedTestCaseFn(runStress),
}
func main() {
run.InvokeMap(testcases)
}
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type networkParams struct {
latency time.Duration
bandwidth uint64
}
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func runStress(runenv *runtime.RunEnv, initCtx *run.InitContext) error {
var (
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size = runenv.SizeParam("size")
concurrency = runenv.IntParam("concurrency")
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networkParams = parseNetworkConfig(runenv)
)
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runenv.RecordMessage("started test instance")
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Minute)
defer cancel()
initCtx.MustWaitAllInstancesInitialized(ctx)
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host, peers, _ := makeHost(ctx, runenv, initCtx)
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defer host.Close()
var (
// make datastore, blockstore, dag service, graphsync
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bs = blockstore.NewBlockstore(dss.MutexWrap(ds.NewMapDatastore()))
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dagsrv = merkledag.NewDAGService(blockservice.New(bs, offline.Exchange(bs)))
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gsync = gsi.New(ctx,
gsnet.NewFromLibp2pHost(host),
storeutil.LoaderForBlockstore(bs),
storeutil.StorerForBlockstore(bs),
)
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)
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defer initCtx.SyncClient.MustSignalAndWait(ctx, "done", runenv.TestInstanceCount)
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switch runenv.TestGroupID {
case "providers":
if runenv.TestGroupInstanceCount > 1 {
panic("test case only supports one provider")
}
runenv.RecordMessage("we are the provider")
defer runenv.RecordMessage("done provider")
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gsync.RegisterIncomingRequestHook(func(p peer.ID, request gs.RequestData, hookActions gs.IncomingRequestHookActions) {
hookActions.ValidateRequest()
})
return runProvider(ctx, runenv, initCtx, dagsrv, size, networkParams, concurrency)
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case "requestors":
runenv.RecordMessage("we are the requestor")
defer runenv.RecordMessage("done requestor")
p := *peers[0]
if err := host.Connect(ctx, p); err != nil {
return err
}
runenv.RecordMessage("done dialling provider")
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return runRequestor(ctx, runenv, initCtx, gsync, p, dagsrv, networkParams, concurrency)
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default:
panic("unsupported group ID")
}
}
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func parseNetworkConfig(runenv *runtime.RunEnv) []networkParams {
var (
bandwidths = runenv.SizeArrayParam("bandwidths")
latencies []time.Duration
)
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lats := runenv.StringArrayParam("latencies")
for _, l := range lats {
d, err := time.ParseDuration(l)
if err != nil {
panic(err)
}
latencies = append(latencies, d)
}
// prepend bandwidth=0 and latency=0 zero values; the first iteration will
// be a control iteration. The sidecar interprets zero values as no
// limitation on that attribute.
bandwidths = append([]uint64{0}, bandwidths...)
latencies = append([]time.Duration{0}, latencies...)
var ret []networkParams
for _, bandwidth := range bandwidths {
for _, latency := range latencies {
ret = append(ret, networkParams{
latency: latency,
bandwidth: bandwidth,
})
}
}
return ret
}
func runRequestor(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitContext, gsync gs.GraphExchange, p peer.AddrInfo, dagsrv format.DAGService, networkParams []networkParams, concurrency int) error {
var (
cids []cid.Cid
// create a selector for the whole UnixFS dag
ssb = builder.NewSelectorSpecBuilder(basicnode.Style.Any)
sel = ssb.ExploreRecursive(selector.RecursionLimitNone(), ssb.ExploreAll(ssb.ExploreRecursiveEdge())).Node()
)
for round, np := range networkParams {
var (
topicCid = sync.NewTopic(fmt.Sprintf("cid-%d", round), []cid.Cid{})
stateNext = sync.State(fmt.Sprintf("next-%d", round))
stateNet = sync.State(fmt.Sprintf("network-configured-%d", round))
)
// wait for all instances to be ready for the next state.
initCtx.SyncClient.MustSignalAndWait(ctx, stateNext, runenv.TestInstanceCount)
// clean up previous CIDs to attempt to free memory
// TODO does this work?
_ = dagsrv.RemoveMany(ctx, cids)
runenv.RecordMessage("===== ROUND %d: latency=%s, bandwidth=%d =====", round, np.latency, np.bandwidth)
sctx, scancel := context.WithCancel(ctx)
cidCh := make(chan []cid.Cid, 1)
initCtx.SyncClient.MustSubscribe(sctx, topicCid, cidCh)
cids = <-cidCh
scancel()
// run GC to get accurate-ish stats.
goruntime.GC()
goruntime.GC()
<-initCtx.SyncClient.MustBarrier(ctx, stateNet, 1).C
errgrp, grpctx := errgroup.WithContext(ctx)
for _, c := range cids {
c := c // capture
np := np // capture
errgrp.Go(func() error {
// make a go-ipld-prime link for the root UnixFS node
clink := cidlink.Link{Cid: c}
// execute the traversal.
runenv.RecordMessage("\t>>> requesting CID %s", c)
start := time.Now()
_, errCh := gsync.Request(grpctx, p.ID, clink, sel)
for err := range errCh {
return err
}
runenv.RecordMessage("\t<<< request complete with no errors")
runenv.RecordMessage("***** ROUND %d observed duration (lat=%s,bw=%d): %s", round, np.latency, np.bandwidth, time.Since(start))
// verify that we have the CID now.
if node, err := dagsrv.Get(grpctx, c); err != nil {
return err
} else if node == nil {
return fmt.Errorf("finished graphsync request, but CID not in store")
}
return nil
})
}
if err := errgrp.Wait(); err != nil {
return err
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}
}
return nil
}
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func runProvider(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitContext, dagsrv format.DAGService, size uint64, networkParams []networkParams, concurrency int) error {
var (
cids []cid.Cid
bufferedDS = format.NewBufferedDAG(ctx, dagsrv)
)
for round, np := range networkParams {
var (
topicCid = sync.NewTopic(fmt.Sprintf("cid-%d", round), []cid.Cid{})
stateNext = sync.State(fmt.Sprintf("next-%d", round))
stateNet = sync.State(fmt.Sprintf("network-configured-%d", round))
)
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// wait for all instances to be ready for the next state.
initCtx.SyncClient.MustSignalAndWait(ctx, stateNext, runenv.TestInstanceCount)
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// remove the previous CIDs from the dag service; hopefully this
// will delete them from the store and free up memory.
for _, c := range cids {
_ = dagsrv.Remove(ctx, c)
}
cids = cids[:0]
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runenv.RecordMessage("===== ROUND %d: latency=%s, bandwidth=%d =====", round, np.latency, np.bandwidth)
// generate as many random files as the concurrency level.
for i := 0; i < concurrency; i++ {
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// file with random data
file := files.NewReaderFile(io.LimitReader(rand.Reader, int64(size)))
const unixfsChunkSize uint64 = 1 << 10
const unixfsLinksPerLevel = 1024
params := ihelper.DagBuilderParams{
Maxlinks: unixfsLinksPerLevel,
RawLeaves: true,
CidBuilder: nil,
Dagserv: bufferedDS,
}
db, err := params.New(chunk.NewSizeSplitter(file, int64(unixfsChunkSize)))
if err != nil {
return fmt.Errorf("unable to setup dag builder: %w", err)
}
node, err := balanced.Layout(db)
if err != nil {
return fmt.Errorf("unable to create unix fs node: %w", err)
}
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cids = append(cids, node.Cid())
}
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if err := bufferedDS.Commit(); err != nil {
return fmt.Errorf("unable to commit unix fs node: %w", err)
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}
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// run GC to get accurate-ish stats.
goruntime.GC()
goruntime.GC()
runenv.RecordMessage("\tCIDs are: %v", cids)
initCtx.SyncClient.MustPublish(ctx, topicCid, cids)
runenv.RecordMessage("\tconfiguring network for round %d", round)
initCtx.NetClient.MustConfigureNetwork(ctx, &network.Config{
Network: "default",
Enable: true,
Default: network.LinkShape{
Latency: np.latency,
Bandwidth: np.bandwidth * 8, // bps
},
CallbackState: stateNet,
CallbackTarget: 1,
})
runenv.RecordMessage("\tnetwork configured for round %d", round)
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}
return nil
}
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func makeHost(ctx context.Context, runenv *runtime.RunEnv, initCtx *run.InitContext) (host.Host, []*peer.AddrInfo, *metrics.BandwidthCounter) {
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secureChannel := runenv.StringParam("secure_channel")
var security libp2p.Option
switch secureChannel {
case "noise":
security = libp2p.Security(noise.ID, noise.New)
case "secio":
security = libp2p.Security(secio.ID, secio.New)
case "tls":
security = libp2p.Security(tls.ID, tls.New)
}
// ☎️ Let's construct the libp2p node.
ip := initCtx.NetClient.MustGetDataNetworkIP()
listenAddr := fmt.Sprintf("/ip4/%s/tcp/0", ip)
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bwcounter := metrics.NewBandwidthCounter()
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host, err := libp2p.New(ctx,
security,
libp2p.ListenAddrStrings(listenAddr),
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libp2p.BandwidthReporter(bwcounter),
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)
if err != nil {
panic(fmt.Sprintf("failed to instantiate libp2p instance: %s", err))
}
// Record our listen addrs.
runenv.RecordMessage("my listen addrs: %v", host.Addrs())
// Obtain our own address info, and use the sync service to publish it to a
// 'peersTopic' topic, where others will read from.
var (
id = host.ID()
ai = &peer.AddrInfo{ID: id, Addrs: host.Addrs()}
// the peers topic where all instances will advertise their AddrInfo.
peersTopic = sync.NewTopic("peers", new(peer.AddrInfo))
// initialize a slice to store the AddrInfos of all other peers in the run.
peers = make([]*peer.AddrInfo, 0, runenv.TestInstanceCount-1)
)
// Publish our own.
initCtx.SyncClient.MustPublish(ctx, peersTopic, ai)
// Now subscribe to the peers topic and consume all addresses, storing them
// in the peers slice.
peersCh := make(chan *peer.AddrInfo)
sctx, scancel := context.WithCancel(ctx)
defer scancel()
sub := initCtx.SyncClient.MustSubscribe(sctx, peersTopic, peersCh)
// Receive the expected number of AddrInfos.
for len(peers) < cap(peers) {
select {
case ai := <-peersCh:
if ai.ID == id {
continue // skip over ourselves.
}
peers = append(peers, ai)
case err := <-sub.Done():
panic(err)
}
}
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return host, peers, bwcounter
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}