Add graphsync

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

node/builder.go

@@ -91,6 +91,7 @@ const (
 
 	RunHelloKey
 	RunBlockSyncKey
+	RunChainGraphsync
 	RunPeerMgrKey
 
 	HandleIncomingBlocksKey
@@ -227,6 +228,7 @@ func Online() Option {
 
 			Override(RunHelloKey, modules.RunHello),
 			Override(RunBlockSyncKey, modules.RunBlockSync),
+			Override(RunChainGraphsync, modules.ChainGraphsync),
 			Override(RunPeerMgrKey, modules.RunPeerMgr),
 			Override(HandleIncomingBlocksKey, modules.HandleIncomingBlocks),
 

node/modules/chain.go

@@ -9,6 +9,10 @@ import (
 	"github.com/ipfs/go-blockservice"
 	"github.com/ipfs/go-car"
 	"github.com/ipfs/go-datastore"
+	graphsync "github.com/ipfs/go-graphsync/impl"
+	"github.com/ipfs/go-graphsync/ipldbridge"
+	gsnet "github.com/ipfs/go-graphsync/network"
+	"github.com/ipfs/go-graphsync/storeutil"
 	blockstore "github.com/ipfs/go-ipfs-blockstore"
 	"github.com/libp2p/go-libp2p-core/host"
 	"github.com/libp2p/go-libp2p-core/routing"
@@ -73,6 +77,15 @@ func ChainBlockservice(bs dtypes.ChainBlockstore, rem dtypes.ChainExchange) dtyp
 	return blockservice.New(bs, rem)
 }
 
+func ChainGraphsync(mctx helpers.MetricsCtx, lc fx.Lifecycle, ibs dtypes.ChainGCBlockstore, h host.Host) dtypes.ClientGraphsync {
+	graphsyncNetwork := gsnet.NewFromLibp2pHost(h)
+	ipldBridge := ipldbridge.NewIPLDBridge()
+	loader := storeutil.LoaderForBlockstore(ibs)
+	gs := graphsync.New(helpers.LifecycleCtx(mctx, lc), graphsyncNetwork, ipldBridge, loader, nil)
+
+	return gs
+}
+
 func ChainStore(lc fx.Lifecycle, bs dtypes.ChainBlockstore, ds dtypes.MetadataDS, syscalls *types.VMSyscalls) *store.ChainStore {
 	chain := store.NewChainStore(bs, ds, syscalls)
 

node/modules/dtypes/storage.go

@@ -24,6 +24,7 @@ type ChainGCLocker blockstore.GCLocker
 type ChainGCBlockstore blockstore.GCBlockstore
 type ChainExchange exchange.Interface
 type ChainBlockService bserv.BlockService
+type ChainGraphsync graphsync.GraphExchange
 
 type ClientFilestore *filestore.Filestore
 type ClientBlockstore blockstore.Blockstore