Construct enough to run hello

chain/blocksync.go

@@ -5,11 +5,12 @@ import (
 	"context"
 	"fmt"
 	"github.com/filecoin-project/go-lotus/lib/cborrpc"
+	exchange "github.com/ipfs/go-ipfs-exchange-interface"
+	"github.com/libp2p/go-libp2p-core/host"
 	"github.com/libp2p/go-libp2p-core/protocol"
 	"math/rand"
 	"sync"
 
-	"github.com/ipfs/go-bitswap"
 	"github.com/ipfs/go-cid"
 	cbor "github.com/ipfs/go-ipld-cbor"
 	inet "github.com/libp2p/go-libp2p-core/network"
@@ -180,17 +181,17 @@ func (bss *BlockSyncService) gatherMessages(ts *TipSet) ([]*SignedMessage, [][]i
 }
 
 type BlockSync struct {
-	bswap     *bitswap.Bitswap
+	bswap     exchange.Interface
 	newStream NewStreamFunc
 
 	syncPeersLk sync.Mutex
 	syncPeers   map[peer.ID]struct{}
 }
 
-func NewBlockSyncClient(bswap *bitswap.Bitswap, newStreamF NewStreamFunc) *BlockSync {
+func NewBlockSyncClient(bswap exchange.Interface, h host.Host) *BlockSync {
 	return &BlockSync{
 		bswap:     bswap,
-		newStream: newStreamF,
+		newStream: h.NewStream,
 		syncPeers: make(map[peer.ID]struct{}),
 	}
 }

chain/chain.go

@@ -173,7 +173,7 @@ type ChainStore struct {
 	headChange func(rev, app []*TipSet) error
 }
 
-func NewChainStore(bs bstore.Blockstore, ds datastore.Datastore) *ChainStore {
+func NewChainStore(bs bstore.Blockstore, ds datastore.Batching) *ChainStore {
 	return &ChainStore{
 		bs:       bs,
 		ds:       ds,

go.mod

@@ -12,6 +12,7 @@ require (
 	github.com/ipfs/go-datastore v0.0.5
 	github.com/ipfs/go-hamt-ipld v0.0.0-20190613164304-cd074602062f
 	github.com/ipfs/go-ipfs-blockstore v0.0.1
+	github.com/ipfs/go-ipfs-exchange-interface v0.0.1
 	github.com/ipfs/go-ipfs-routing v0.1.0
 	github.com/ipfs/go-ipld-cbor v0.0.2
 	github.com/ipfs/go-ipld-format v0.0.2

node/builder.go

@@ -3,6 +3,9 @@ package node
 import (
 	"context"
 	"errors"
+	"github.com/filecoin-project/go-lotus/node/modules/testing"
+	blockstore "github.com/ipfs/go-ipfs-blockstore"
+	exchange "github.com/ipfs/go-ipfs-exchange-interface"
 	"reflect"
 	"time"
 
@@ -18,7 +21,9 @@ import (
 
 	"github.com/filecoin-project/go-lotus/api"
 	"github.com/filecoin-project/go-lotus/build"
+	"github.com/filecoin-project/go-lotus/chain"
 	"github.com/filecoin-project/go-lotus/node/config"
+	"github.com/filecoin-project/go-lotus/node/hello"
 	"github.com/filecoin-project/go-lotus/node/modules"
 	"github.com/filecoin-project/go-lotus/node/modules/helpers"
 	"github.com/filecoin-project/go-lotus/node/modules/lp2p"
@@ -44,13 +49,17 @@ var (
 
 type invoke int
 
+//nolint:golint
 const (
-	// PstoreAddSelfKeysKey is a key for Override for PstoreAddSelfKeys
+	// libp2p
-	PstoreAddSelfKeysKey = invoke(iota)
 
-	// StartListeningKey is a key for Override for StartListening
+	PstoreAddSelfKeysKey = invoke(iota)
 	StartListeningKey
 
+	// filecoin
+	SetGenisisKey
+	RunHelloKey
+
 	_nInvokes // keep this last
 )
 
@@ -97,8 +106,13 @@ var defaults = []Option{
 
 	randomIdentity(),
 
-	Override(new(datastore.Batching), datastore.NewMapDatastore),
+	Override(new(datastore.Batching), testing.MapDatastore),
+	Override(new(blockstore.Blockstore), testing.MapBlockstore), // NOT on top of ds above
 	Override(new(record.Validator), modules.RecordValidator),
+
+	// Filecoin modules
+
+	Override(new(*chain.ChainStore), chain.NewChainStore),
 }
 
 // Online sets up basic libp2p node
@@ -134,7 +148,25 @@ func Online() Option {
 
 		Override(PstoreAddSelfKeysKey, lp2p.PstoreAddSelfKeys),
 		Override(StartListeningKey, lp2p.StartListening(defConf.Libp2p.ListenAddresses)),
+
+		//
+
+		Override(new(blockstore.GCLocker), blockstore.NewGCLocker),
+		Override(new(blockstore.GCBlockstore), blockstore.NewGCBlockstore),
+		Override(new(exchange.Interface), modules.Bitswap),
+
+		// Filecoin services
+		Override(new(*chain.Syncer), chain.NewSyncer),
+		Override(new(*chain.BlockSync), chain.NewBlockSyncClient),
+		Override(new(*chain.Wallet), chain.NewWallet),
+
+		Override(new(modules.Genesis), testing.MakeGenesis),
+		Override(SetGenisisKey, modules.SetGenesis),
+
+		Override(new(*hello.Service), hello.NewHelloService),
+		Override(RunHelloKey, hello.Run),
 	)
+
 }
 
 // Config sets up constructors based on the provided config

node/hello/hello.go

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"github.com/filecoin-project/go-lotus/chain"
 	"github.com/filecoin-project/go-lotus/lib/cborrpc"
+	"github.com/filecoin-project/go-lotus/node/modules/helpers"
+	"go.uber.org/fx"
 
 	"github.com/libp2p/go-libp2p-core/host"
 
@@ -36,9 +38,12 @@ type Service struct {
 	syncer *chain.Syncer
 }
 
-func NewHelloService(h host.Host) *Service {
+func NewHelloService(h host.Host, cs *chain.ChainStore, syncer *chain.Syncer) *Service {
 	return &Service{
 		newStream: h.NewStream,
+
+		cs:     cs,
+		syncer: syncer,
 	}
 }
 
@@ -97,3 +102,20 @@ func (hs *Service) SayHello(ctx context.Context, pid peer.ID) error {
 
 	return nil
 }
+
+func Run(mctx helpers.MetricsCtx, lc fx.Lifecycle, hs *Service, h host.Host) {
+	ctx := helpers.LifecycleCtx(mctx, lc)
+	h.SetStreamHandler(ProtocolID, hs.HandleStream)
+
+	bundle := inet.NotifyBundle{
+		ConnectedF: func(_ inet.Network, c inet.Conn) {
+			go func() {
+				if err := hs.SayHello(ctx, c.RemotePeer()); err != nil {
+					log.Error("failed to say hello: ", err)
+					return
+				}
+			}()
+		},
+	}
+	h.Network().Notify(&bundle)
+}

node/modules/core.go

@@ -1,16 +1,43 @@
 package modules
 
 import (
+	"context"
+	"github.com/filecoin-project/go-lotus/chain"
+	"github.com/filecoin-project/go-lotus/node/modules/helpers"
+	"github.com/ipfs/go-bitswap"
+	"github.com/ipfs/go-bitswap/network"
+	blockstore "github.com/ipfs/go-ipfs-blockstore"
+	exchange "github.com/ipfs/go-ipfs-exchange-interface"
 	logging "github.com/ipfs/go-log"
+	"github.com/libp2p/go-libp2p-core/host"
 	"github.com/libp2p/go-libp2p-core/peerstore"
+	"github.com/libp2p/go-libp2p-core/routing"
 	record "github.com/libp2p/go-libp2p-record"
+	"go.uber.org/fx"
 )
 
 var log = logging.Logger("modules")
 
+type Genesis *chain.BlockHeader
+
 // RecordValidator provides namesys compatible routing record validator
 func RecordValidator(ps peerstore.Peerstore) record.Validator {
 	return record.NamespacedValidator{
 		"pk": record.PublicKeyValidator{},
 	}
 }
+
+func Bitswap(mctx helpers.MetricsCtx, lc fx.Lifecycle, host host.Host, rt routing.Routing, bs blockstore.GCBlockstore) exchange.Interface {
+	bitswapNetwork := network.NewFromIpfsHost(host, rt)
+	exch := bitswap.New(helpers.LifecycleCtx(mctx, lc), bitswapNetwork, bs)
+	lc.Append(fx.Hook{
+		OnStop: func(ctx context.Context) error {
+			return exch.Close()
+		},
+	})
+	return exch
+}
+
+func SetGenesis(cs *chain.ChainStore, g Genesis) error {
+	return cs.SetGenesis(g)
+}

node/modules/testing/genesis.go

@@ -0,0 +1,15 @@
+package testing
+
+import (
+	"github.com/filecoin-project/go-lotus/chain"
+	"github.com/filecoin-project/go-lotus/node/modules"
+	blockstore "github.com/ipfs/go-ipfs-blockstore"
+)
+
+func MakeGenesis(bs blockstore.Blockstore, w *chain.Wallet) (modules.Genesis, error) {
+	genb, err := chain.MakeGenesisBlock(bs, w)
+	if err != nil {
+		return nil, err
+	}
+	return genb.Genesis, nil
+}

node/modules/testing/storage.go

@@ -0,0 +1,18 @@
+package testing
+
+import (
+	"github.com/ipfs/go-datastore"
+	dsync "github.com/ipfs/go-datastore/sync"
+	blockstore "github.com/ipfs/go-ipfs-blockstore"
+)
+
+func MapBlockstore() blockstore.Blockstore {
+	// TODO: proper datastore
+	bds := dsync.MutexWrap(datastore.NewMapDatastore())
+	bs := blockstore.NewBlockstore(bds)
+	return blockstore.NewIdStore(bs)
+}
+
+func MapDatastore() datastore.Batching {
+	return dsync.MutexWrap(datastore.NewMapDatastore())
+}