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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,196 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "crypto/rand" | ||
| "fmt" | ||
| "net/http" | ||
| _ "net/http/pprof" | ||
| "sync/atomic" | ||
| "time" | ||
|
|
||
| "github.com/filecoin-project/boost/tracing" | ||
| lcli "github.com/filecoin-project/lotus/cli" | ||
| "github.com/ipfs/go-bitswap/client" | ||
| bsnetwork "github.com/ipfs/go-bitswap/network" | ||
| "github.com/ipfs/go-cid" | ||
| "github.com/ipfs/go-datastore" | ||
| bstore "github.com/ipfs/go-ipfs-blockstore" | ||
| nilrouting "github.com/ipfs/go-ipfs-routing/none" | ||
| ipldlegacy "github.com/ipfs/go-ipld-legacy" | ||
| "github.com/libp2p/go-libp2p" | ||
| "github.com/libp2p/go-libp2p/core/crypto" | ||
| "github.com/libp2p/go-libp2p/core/network" | ||
| "github.com/libp2p/go-libp2p/core/peer" | ||
| "github.com/libp2p/go-libp2p/p2p/muxer/mplex" | ||
| "github.com/libp2p/go-libp2p/p2p/muxer/yamux" | ||
| quic "github.com/libp2p/go-libp2p/p2p/transport/quic" | ||
| "github.com/libp2p/go-libp2p/p2p/transport/tcp" | ||
| "github.com/pkg/profile" | ||
| "github.com/urfave/cli/v2" | ||
| "golang.org/x/sync/errgroup" | ||
| ) | ||
|
|
||
| var fetchCmd = &cli.Command{ | ||
| Name: "fetch", | ||
| Usage: "fetch <multiaddr> <root cid>", | ||
| Description: "Fetch all blocks in the DAG under the given root cid from the bitswap node at multiaddr", | ||
| Before: before, | ||
| Flags: []cli.Flag{ | ||
| &cli.BoolFlag{ | ||
| Name: "pprof", | ||
| Usage: "run pprof web server on localhost:6070", | ||
| }, | ||
| &cli.IntFlag{ | ||
| Name: "concurrency", | ||
| Usage: "concurrent request limit - 0 means unlimited", | ||
| Value: 10, | ||
| }, | ||
| &cli.BoolFlag{ | ||
| Name: "tracing", | ||
| Usage: "enables tracing of booster-bitswap calls", | ||
| Value: false, | ||
| }, | ||
| &cli.StringFlag{ | ||
| Name: "tracing-endpoint", | ||
| Usage: "the endpoint for the tracing exporter", | ||
| Value: "http://tempo:14268/api/traces", | ||
| }, | ||
| }, | ||
| Action: func(cctx *cli.Context) error { | ||
| if cctx.Args().Len() != 2 { | ||
| return fmt.Errorf("usage: fetch <multiaddr> <cid>") | ||
| } | ||
|
|
||
| addrInfoStr := cctx.Args().Get(0) | ||
| serverAddrInfo, err := peer.AddrInfoFromString(addrInfoStr) | ||
| if err != nil { | ||
| return fmt.Errorf("parsing server multiaddr %s: %w", addrInfoStr, err) | ||
| } | ||
|
|
||
| rootCidStr := cctx.Args().Get(1) | ||
| rootCid, err := cid.Parse(rootCidStr) | ||
| if err != nil { | ||
| return fmt.Errorf("parsing cid %s: %w", rootCidStr, err) | ||
| } | ||
|
|
||
| defer profile.Start(profile.TraceProfile, profile.ProfilePath(".")).Stop() | ||
|
|
||
| if cctx.Bool("pprof") { | ||
| go func() { | ||
| err := http.ListenAndServe("localhost:6065", nil) | ||
| if err != nil { | ||
| log.Error(err) | ||
| } | ||
| }() | ||
| } | ||
|
|
||
| ctx := lcli.ReqContext(cctx) | ||
|
|
||
| // Instantiate the tracer and exporter | ||
| if cctx.Bool("tracing") { | ||
| tracingStopper, err := tracing.New("booster-bsclient", cctx.String("tracing-endpoint")) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to instantiate tracer: %w", err) | ||
| } | ||
| log.Info("Tracing exporter enabled") | ||
|
|
||
| defer func() { | ||
| _ = tracingStopper(ctx) | ||
| }() | ||
| } | ||
|
|
||
| // setup libp2p host | ||
| log.Infow("generating libp2p key") | ||
| privKey, _, err := crypto.GenerateECDSAKeyPair(rand.Reader) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| host, err := libp2p.New( | ||
| libp2p.Transport(tcp.NewTCPTransport), | ||
| libp2p.Transport(quic.NewTransport), | ||
| libp2p.Muxer("/mplex/6.7.0", mplex.DefaultTransport), | ||
| libp2p.Muxer("/yamux/1.0.0", yamux.DefaultTransport), | ||
| libp2p.Identity(privKey), | ||
| libp2p.ResourceManager(network.NullResourceManager), | ||
| ) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // Create a bitswap client | ||
| nilRouter, err := nilrouting.ConstructNilRouting(ctx, nil, nil, nil) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| net := bsnetwork.NewFromIpfsHost(host, nilRouter) | ||
| bs := bstore.NewBlockstore(datastore.NewNullDatastore()) | ||
| bsClient := client.New(ctx, net, bs) | ||
| net.Start(bsClient) | ||
|
|
||
| log.Infow("connecting to server", "server", serverAddrInfo.String()) | ||
| err = host.Connect(ctx, *serverAddrInfo) | ||
| if err != nil { | ||
| return fmt.Errorf("connecting to %s: %w", serverAddrInfo, err) | ||
| } | ||
|
|
||
| var throttle chan struct{} | ||
| concurrency := cctx.Int("concurrency") | ||
| if concurrency > 0 { | ||
| throttle = make(chan struct{}, concurrency) | ||
| } | ||
|
|
||
| log.Infow("fetch", "cid", rootCid, "concurrency", concurrency) | ||
| start := time.Now() | ||
| count, size, err := getBlocks(ctx, bsClient, rootCid, throttle) | ||
| if err != nil { | ||
| return fmt.Errorf("getting blocks: %w", err) | ||
| } | ||
|
|
||
| log.Infow("complete", "count", count, "size", size, "duration", time.Since(start)) | ||
| return nil | ||
| }, | ||
| } | ||
|
|
||
| func getBlocks(ctx context.Context, bsClient *client.Client, c cid.Cid, throttle chan struct{}) (uint64, uint64, error) { | ||
| if throttle != nil { | ||
| throttle <- struct{}{} | ||
| } | ||
| // Get the block | ||
| start := time.Now() | ||
| blk, err := bsClient.GetBlock(ctx, c) | ||
| if throttle != nil { | ||
| <-throttle | ||
| } | ||
| if err != nil { | ||
| return 0, 0, err | ||
| } | ||
|
|
||
| var size = uint64(len(blk.RawData())) | ||
| log.Debugw("receive", "cid", c, "size", size, "duration", time.Since(start)) | ||
|
|
||
| // Read the links from the block to child nodes in the DAG | ||
| var count = uint64(1) | ||
| nd, err := ipldlegacy.DecodeNode(ctx, blk) | ||
| if err != nil { | ||
| return 0, 0, fmt.Errorf("decoding node %s: %w", c, err) | ||
| } | ||
|
|
||
| var eg errgroup.Group | ||
| lnks := nd.Links() | ||
| for _, l := range lnks { | ||
| l := l | ||
| // Launch a go routine to fetch the blocks underneath each link | ||
| eg.Go(func() error { | ||
| cnt, sz, err := getBlocks(ctx, bsClient, l.Cid, throttle) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| atomic.AddUint64(&count, cnt) | ||
| atomic.AddUint64(&size, sz) | ||
| return nil | ||
| }) | ||
| } | ||
| return count, size, eg.Wait() | ||
| } |
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