47 lines
2.1 KiB
Go
47 lines
2.1 KiB
Go
package modules
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import (
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"github.com/ipfs/go-graphsync"
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graphsyncimpl "github.com/ipfs/go-graphsync/impl"
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gsnet "github.com/ipfs/go-graphsync/network"
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"github.com/ipfs/go-graphsync/storeutil"
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"github.com/libp2p/go-libp2p-core/host"
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"github.com/libp2p/go-libp2p-core/peer"
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"go.uber.org/fx"
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"github.com/filecoin-project/lotus/node/modules/dtypes"
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"github.com/filecoin-project/lotus/node/modules/helpers"
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"github.com/filecoin-project/lotus/node/repo"
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)
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// Graphsync creates a graphsync instance from the given loader and storer
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func Graphsync(parallelTransfers uint64) func(mctx helpers.MetricsCtx, lc fx.Lifecycle, r repo.LockedRepo, clientBs dtypes.ClientBlockstore, chainBs dtypes.ExposedBlockstore, h host.Host) (dtypes.Graphsync, error) {
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return func(mctx helpers.MetricsCtx, lc fx.Lifecycle, r repo.LockedRepo, clientBs dtypes.ClientBlockstore, chainBs dtypes.ExposedBlockstore, h host.Host) (dtypes.Graphsync, error) {
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graphsyncNetwork := gsnet.NewFromLibp2pHost(h)
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lsys := storeutil.LinkSystemForBlockstore(clientBs)
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gs := graphsyncimpl.New(helpers.LifecycleCtx(mctx, lc), graphsyncNetwork, lsys, graphsyncimpl.RejectAllRequestsByDefault(), graphsyncimpl.MaxInProgressRequests(parallelTransfers))
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chainLinkSystem := storeutil.LinkSystemForBlockstore(chainBs)
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err := gs.RegisterPersistenceOption("chainstore", chainLinkSystem)
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if err != nil {
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return nil, err
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}
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gs.RegisterIncomingRequestHook(func(p peer.ID, requestData graphsync.RequestData, hookActions graphsync.IncomingRequestHookActions) {
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_, has := requestData.Extension("chainsync")
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if has {
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// TODO: we should confirm the selector is a reasonable one before we validate
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// TODO: this code will get more complicated and should probably not live here eventually
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hookActions.ValidateRequest()
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hookActions.UsePersistenceOption("chainstore")
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}
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})
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gs.RegisterOutgoingRequestHook(func(p peer.ID, requestData graphsync.RequestData, hookActions graphsync.OutgoingRequestHookActions) {
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_, has := requestData.Extension("chainsync")
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if has {
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hookActions.UsePersistenceOption("chainstore")
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}
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})
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return gs, nil
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}
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}
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