wip with DHT

@whyrusleeping @jbenet this is a WIP with the DHT.

wip

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

Conflicts:
	epictest/addcat_test.go
	exchange/bitswap/testnet/peernet.go
	exchange/bitswap/testutils.go
	routing/mock/centralized_server.go
	routing/mock/centralized_test.go
	routing/mock/interface.go

fix(routing/mock) fill in function definition

core/mock.go

@@ -1,6 +1,7 @@
 package core
 
 import (
+	context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
 	ds "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore"
 	syncds "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore/sync"
 	"github.com/jbenet/go-ipfs/blocks/blockstore"
@@ -11,12 +12,13 @@ import (
 	nsys "github.com/jbenet/go-ipfs/namesys"
 	path "github.com/jbenet/go-ipfs/path"
 	peer "github.com/jbenet/go-ipfs/peer"
-	mdht "github.com/jbenet/go-ipfs/routing/mock"
+	dht "github.com/jbenet/go-ipfs/routing/dht"
 	ds2 "github.com/jbenet/go-ipfs/util/datastore2"
 )
 
 // NewMockNode constructs an IpfsNode for use in tests.
 func NewMockNode() (*IpfsNode, error) {
+	ctx := context.TODO()
 	nd := new(IpfsNode)
 
 	// Generate Identity
@@ -41,8 +43,7 @@ func NewMockNode() (*IpfsNode, error) {
 	nd.Datastore = ds2.CloserWrap(syncds.MutexWrap(dstore))
 
 	// Routing
-	dht := mdht.NewServer().ClientWithDatastore(peer.PeerInfo{ID: p}, nd.Datastore)
-	nd.Routing = dht
+	nd.Routing = dht.NewDHT(ctx, nd.Identity, nd.Network, nd.Datastore)
 
 	// Bitswap
 	bstore := blockstore.NewBlockstore(nd.Datastore)
@@ -54,7 +55,7 @@ func NewMockNode() (*IpfsNode, error) {
 	nd.DAG = mdag.NewDAGService(bserv)
 
 	// Namespace resolver
-	nd.Namesys = nsys.NewNameSystem(dht)
+	nd.Namesys = nsys.NewNameSystem(nd.Routing)
 
 	// Path resolver
 	nd.Resolver = &path.Resolver{DAG: nd.DAG}

epictest/addcat_test.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"io"
+	"math"
 	"os"
 	"testing"
 	"time"
@@ -16,12 +17,12 @@ import (
 	importer "github.com/jbenet/go-ipfs/importer"
 	chunk "github.com/jbenet/go-ipfs/importer/chunk"
 	merkledag "github.com/jbenet/go-ipfs/merkledag"
+	mocknet "github.com/jbenet/go-ipfs/net/mock"
 	path "github.com/jbenet/go-ipfs/path"
 	mockrouting "github.com/jbenet/go-ipfs/routing/mock"
 	uio "github.com/jbenet/go-ipfs/unixfs/io"
 	util "github.com/jbenet/go-ipfs/util"
 	errors "github.com/jbenet/go-ipfs/util/debugerror"
-	delay "github.com/jbenet/go-ipfs/util/delay"
 )
 
 const kSeed = 1
@@ -87,11 +88,14 @@ func RandomBytes(n int64) []byte {
 
 func AddCatBytes(data []byte, conf Config) error {
 	ctx := context.Background()
-	rs := mockrouting.NewServerWithDelay(mockrouting.DelayConfig{
-		Query:           delay.Fixed(conf.RoutingLatency),
-		ValueVisibility: delay.Fixed(conf.RoutingLatency),
+	mn := mocknet.New(ctx)
+	// defer mn.Close() FIXME does mocknet require clean-up
+	mn.SetLinkDefaults(mocknet.LinkOptions{
+		Latency:   conf.NetworkLatency,
+		Bandwidth: math.MaxInt32, // TODO add to conf
 	})
-	net, err := tn.StreamNetWithDelay(ctx, rs, delay.Fixed(conf.NetworkLatency))
+	dhtNetwork := mockrouting.NewDHTNetwork(mn)
+	net, err := tn.StreamNet(ctx, mn, dhtNetwork)
 	if err != nil {
 		return errors.Wrap(err)
 	}
@@ -100,6 +104,28 @@ func AddCatBytes(data []byte, conf Config) error {
 
 	adder := sessionGenerator.Next()
 	catter := sessionGenerator.Next()
+	// catter.Routing.Update(context.TODO(), adder.Peer)
+
+	peers := mn.Peers()
+	if len(peers) != 2 {
+		return errors.New("peers not in network")
+	}
+
+	for _, i := range peers {
+		for _, j := range peers {
+			if i == j {
+				continue
+			}
+			fmt.Println(i, " and ", j)
+			if _, err := mn.LinkPeers(i, j); err != nil {
+				return err
+			}
+			if err := mn.ConnectPeers(i, j); err != nil {
+				return err
+			}
+		}
+	}
+
 	catter.SetBlockstoreLatency(conf.BlockstoreLatency)
 
 	adder.SetBlockstoreLatency(0) // disable blockstore latency during add operation

epictest/bench_test.go

@@ -18,6 +18,7 @@ func benchmarkAddCat(numBytes int64, conf Config, b *testing.B) {
 
 var instant = Config{}.All_Instantaneous()
 
+func BenchmarkInstantaneousAddCat1KB(b *testing.B)   { benchmarkAddCat(1*KB, instant, b) }
 func BenchmarkInstantaneousAddCat1MB(b *testing.B)   { benchmarkAddCat(1*MB, instant, b) }
 func BenchmarkInstantaneousAddCat2MB(b *testing.B)   { benchmarkAddCat(2*MB, instant, b) }
 func BenchmarkInstantaneousAddCat4MB(b *testing.B)   { benchmarkAddCat(4*MB, instant, b) }

exchange/bitswap/bitswap_test.go

@@ -11,10 +11,10 @@ import (
 	blocks "github.com/jbenet/go-ipfs/blocks"
 	blocksutil "github.com/jbenet/go-ipfs/blocks/blocksutil"
 	tn "github.com/jbenet/go-ipfs/exchange/bitswap/testnet"
-	peer "github.com/jbenet/go-ipfs/peer"
 	mockrouting "github.com/jbenet/go-ipfs/routing/mock"
 	u "github.com/jbenet/go-ipfs/util"
 	delay "github.com/jbenet/go-ipfs/util/delay"
+	"github.com/jbenet/go-ipfs/util/testutil"
 )
 
 // FIXME the tests are really sensitive to the network delay. fix them to work
@@ -61,7 +61,7 @@ func TestProviderForKeyButNetworkCannotFind(t *testing.T) { // TODO revisit this
 	defer g.Close()
 
 	block := blocks.NewBlock([]byte("block"))
-	pinfo := peer.PeerInfo{ID: peer.ID("testing")}
+	pinfo := testutil.RandPeerOrFatal(t)
 	rs.Client(pinfo).Provide(context.Background(), block.Key()) // but not on network
 
 	solo := g.Next()

exchange/bitswap/testnet/peernet.go

@@ -1,14 +1,12 @@
 package bitswap
 
 import (
-	"math"
-
 	context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
+	ds "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore"
 	bsnet "github.com/jbenet/go-ipfs/exchange/bitswap/network"
 	mockpeernet "github.com/jbenet/go-ipfs/net/mock"
 	peer "github.com/jbenet/go-ipfs/peer"
 	mockrouting "github.com/jbenet/go-ipfs/routing/mock"
-	delay "github.com/jbenet/go-ipfs/util/delay"
 	testutil "github.com/jbenet/go-ipfs/util/testutil"
 )
 
@@ -17,16 +15,7 @@ type peernet struct {
 	routingserver mockrouting.Server
 }
 
-func StreamNetWithDelay(
-	ctx context.Context,
-	rs mockrouting.Server,
-	d delay.D) (Network, error) {
-
-	net := mockpeernet.New(ctx)
-	net.SetLinkDefaults(mockpeernet.LinkOptions{
-		Latency:   d.Get(),
-		Bandwidth: math.MaxInt32, // TODO inject
-	})
+func StreamNet(ctx context.Context, net mockpeernet.Mocknet, rs mockrouting.Server) (Network, error) {
 	return &peernet{net, rs}, nil
 }
 
@@ -39,7 +28,7 @@ func (pn *peernet) Adapter(p testutil.Peer) bsnet.BitSwapNetwork {
 	for _, other := range peers {
 		pn.Mocknet.LinkPeers(p.ID(), other)
 	}
-	routing := pn.routingserver.Client(peer.PeerInfo{ID: p.ID()})
+	routing := pn.routingserver.ClientWithDatastore(context.TODO(), p, ds.NewMapDatastore())
 	return bsnet.NewFromIpfsNetwork(client, routing)
 }
 

exchange/bitswap/testnet/virtual.go

@@ -33,7 +33,7 @@ func (n *network) Adapter(p testutil.Peer) bsnet.BitSwapNetwork {
 	client := &networkClient{
 		local:   p.ID(),
 		network: n,
-		routing: n.routingserver.Client(peer.PeerInfo{ID: p.ID()}),
+		routing: n.routingserver.Client(p),
 	}
 	n.clients[p.ID()] = client
 	return client

exchange/bitswap/testutils.go

@@ -79,15 +79,15 @@ func (i *Instance) SetBlockstoreLatency(t time.Duration) time.Duration {
 // sessions. To safeguard, use the SessionGenerator to generate sessions. It's
 // just a much better idea.
 func session(ctx context.Context, net tn.Network, p testutil.Peer) Instance {
-
-	adapter := net.Adapter(p)
-
 	bsdelay := delay.Fixed(0)
 	const kWriteCacheElems = 100
-	bstore, err := blockstore.WriteCached(blockstore.NewBlockstore(ds_sync.MutexWrap(datastore2.WithDelay(ds.NewMapDatastore(), bsdelay))), kWriteCacheElems)
+
+	adapter := net.Adapter(p)
+	dstore := ds_sync.MutexWrap(datastore2.WithDelay(ds.NewMapDatastore(), bsdelay))
+
+	bstore, err := blockstore.WriteCached(blockstore.NewBlockstore(ds_sync.MutexWrap(dstore)), kWriteCacheElems)
 	if err != nil {
-		// FIXME perhaps change signature and return error.
-		panic(err.Error())
+		panic(err.Error()) // FIXME perhaps change signature and return error.
 	}
 
 	const alwaysSendToPeer = true

namesys/resolve_test.go

@@ -4,18 +4,13 @@ import (
 	"testing"
 
 	ci "github.com/jbenet/go-ipfs/crypto"
-	peer "github.com/jbenet/go-ipfs/peer"
 	mockrouting "github.com/jbenet/go-ipfs/routing/mock"
 	u "github.com/jbenet/go-ipfs/util"
 	testutil "github.com/jbenet/go-ipfs/util/testutil"
 )
 
 func TestRoutingResolve(t *testing.T) {
-	local, err := testutil.RandPeerID()
-	if err != nil {
-		t.Fatal(err)
-	}
-	d := mockrouting.NewServer().Client(peer.PeerInfo{ID: local})
+	d := mockrouting.NewServer().Client(testutil.RandPeerOrFatal(t))
 
 	resolver := NewRoutingResolver(d)
 	publisher := NewRoutingPublisher(d)

net/mux.go

@@ -76,6 +76,7 @@ func (m *Mux) ReadProtocolHeader(s io.Reader) (string, StreamHandler, error) {
 // This operation is threadsafe.
 func (m *Mux) SetHandler(p ProtocolID, h StreamHandler) {
 	m.Lock()
+	log.Debug("setting protocol ", p)
 	m.Handlers[p] = h
 	m.Unlock()
 }

routing/dht/routing.go

@@ -1,6 +1,7 @@
 package dht
 
 import (
+	"math"
 	"sync"
 
 	context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
@@ -127,6 +128,15 @@ func (dht *IpfsDHT) Provide(ctx context.Context, key u.Key) error {
 	return nil
 }
 
+// FindProviders searches until the context expires.
+func (dht *IpfsDHT) FindProviders(ctx context.Context, key u.Key) ([]peer.PeerInfo, error) {
+	var providers []peer.PeerInfo
+	for p := range dht.FindProvidersAsync(ctx, key, math.MaxInt32) {
+		providers = append(providers, p)
+	}
+	return providers, nil
+}
+
 // FindProvidersAsync is the same thing as FindProviders, but returns a channel.
 // Peers will be returned on the channel as soon as they are found, even before
 // the search query completes.

routing/mock/centralized_client.go

@@ -5,9 +5,11 @@ import (
 
 	context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
 	ds "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore"
+	ma "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
 	peer "github.com/jbenet/go-ipfs/peer"
 	routing "github.com/jbenet/go-ipfs/routing"
 	u "github.com/jbenet/go-ipfs/util"
+	"github.com/jbenet/go-ipfs/util/testutil"
 )
 
 var log = u.Logger("mockrouter")
@@ -15,7 +17,7 @@ var log = u.Logger("mockrouter")
 type client struct {
 	datastore ds.Datastore
 	server    server
-	peer      peer.PeerInfo
+	peer      testutil.Peer
 }
 
 // FIXME(brian): is this method meant to simulate putting a value into the network?
@@ -70,7 +72,11 @@ func (c *client) FindProvidersAsync(ctx context.Context, k u.Key, max int) <-cha
 // Provide returns once the message is on the network. Value is not necessarily
 // visible yet.
 func (c *client) Provide(_ context.Context, key u.Key) error {
-	return c.server.Announce(c.peer, key)
+	info := peer.PeerInfo{
+		ID:    c.peer.ID(),
+		Addrs: []ma.Multiaddr{c.peer.Address()},
+	}
+	return c.server.Announce(info, key)
 }
 
 var _ routing.IpfsRouting = &client{}

routing/mock/centralized_server.go

@@ -5,9 +5,11 @@ import (
 	"sync"
 	"time"
 
+	context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
 	ds "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore"
 	peer "github.com/jbenet/go-ipfs/peer"
 	u "github.com/jbenet/go-ipfs/util"
+	"github.com/jbenet/go-ipfs/util/testutil"
 )
 
 // server is the mockrouting.Client's private interface to the routing server
@@ -71,11 +73,11 @@ func (rs *s) Providers(k u.Key) []peer.PeerInfo {
 	return ret
 }
 
-func (rs *s) Client(p peer.PeerInfo) Client {
-	return rs.ClientWithDatastore(p, ds.NewMapDatastore())
+func (rs *s) Client(p testutil.Peer) Client {
+	return rs.ClientWithDatastore(context.Background(), p, ds.NewMapDatastore())
 }
 
-func (rs *s) ClientWithDatastore(p peer.PeerInfo, datastore ds.Datastore) Client {
+func (rs *s) ClientWithDatastore(_ context.Context, p testutil.Peer, datastore ds.Datastore) Client {
 	return &client{
 		peer:      p,
 		datastore: ds.NewMapDatastore(),

routing/mock/centralized_test.go

@@ -8,11 +8,12 @@ import (
 	peer "github.com/jbenet/go-ipfs/peer"
 	u "github.com/jbenet/go-ipfs/util"
 	delay "github.com/jbenet/go-ipfs/util/delay"
+	"github.com/jbenet/go-ipfs/util/testutil"
 )
 
 func TestKeyNotFound(t *testing.T) {
 
-	var pi = peer.PeerInfo{ID: peer.ID("the peer id")}
+	var pi = testutil.RandPeerOrFatal(t)
 	var key = u.Key("mock key")
 	var ctx = context.Background()
 
@@ -25,7 +26,7 @@ func TestKeyNotFound(t *testing.T) {
 }
 
 func TestClientFindProviders(t *testing.T) {
-	pi := peer.PeerInfo{ID: peer.ID("42")}
+	pi := testutil.RandPeerOrFatal(t)
 	rs := NewServer()
 	client := rs.Client(pi)
 
@@ -39,20 +40,6 @@ func TestClientFindProviders(t *testing.T) {
 	time.Sleep(time.Millisecond * 300)
 	max := 100
 
-	providersFromHashTable, err := rs.Client(pi).FindProviders(context.Background(), k)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	isInHT := false
-	for _, pi := range providersFromHashTable {
-		if pi.ID == pi.ID {
-			isInHT = true
-		}
-	}
-	if !isInHT {
-		t.Fatal("Despite client providing key, peer wasn't in hash table as a provider")
-	}
 	providersFromClient := client.FindProvidersAsync(context.Background(), u.Key("hello"), max)
 	isInClient := false
 	for pi := range providersFromClient {
@@ -70,7 +57,7 @@ func TestClientOverMax(t *testing.T) {
 	k := u.Key("hello")
 	numProvidersForHelloKey := 100
 	for i := 0; i < numProvidersForHelloKey; i++ {
-		pi := peer.PeerInfo{ID: peer.ID(i)}
+		pi := testutil.RandPeerOrFatal(t)
 		err := rs.Client(pi).Provide(context.Background(), k)
 		if err != nil {
 			t.Fatal(err)
@@ -78,7 +65,7 @@ func TestClientOverMax(t *testing.T) {
 	}
 
 	max := 10
-	pi := peer.PeerInfo{ID: peer.ID("TODO")}
+	pi := testutil.RandPeerOrFatal(t)
 	client := rs.Client(pi)
 
 	providersFromClient := client.FindProvidersAsync(context.Background(), k, max)
@@ -113,8 +100,11 @@ func TestCanceledContext(t *testing.T) {
 			default:
 			}
 
-			pi := peer.PeerInfo{ID: peer.ID(i)}
-			err := rs.Client(pi).Provide(context.Background(), k)
+			pi, err := testutil.RandPeer()
+			if err != nil {
+				t.Error(err)
+			}
+			err = rs.Client(pi).Provide(context.Background(), k)
 			if err != nil {
 				t.Error(err)
 			}
@@ -122,7 +112,7 @@ func TestCanceledContext(t *testing.T) {
 		}
 	}()
 
-	local := peer.PeerInfo{ID: peer.ID("peer id doesn't matter")}
+	local := testutil.RandPeerOrFatal(t)
 	client := rs.Client(local)
 
 	t.Log("warning: max is finite so this test is non-deterministic")
@@ -148,7 +138,7 @@ func TestCanceledContext(t *testing.T) {
 
 func TestValidAfter(t *testing.T) {
 
-	var pi = peer.PeerInfo{ID: peer.ID("the peer id")}
+	pi := testutil.RandPeerOrFatal(t)
 	var key = u.Key("mock key")
 	var ctx = context.Background()
 	conf := DelayConfig{

routing/mock/interface.go

@@ -11,18 +11,18 @@ import (
 	routing "github.com/jbenet/go-ipfs/routing"
 	u "github.com/jbenet/go-ipfs/util"
 	delay "github.com/jbenet/go-ipfs/util/delay"
+	"github.com/jbenet/go-ipfs/util/testutil"
 )
 
 // Server provides mockrouting Clients
 type Server interface {
-	Client(p peer.PeerInfo) Client
-	ClientWithDatastore(peer.PeerInfo, ds.Datastore) Client
+	Client(p testutil.Peer) Client
+	ClientWithDatastore(context.Context, testutil.Peer, ds.Datastore) Client
 }
 
 // Client implements IpfsRouting
 type Client interface {
 	FindProviders(context.Context, u.Key) ([]peer.PeerInfo, error)
-
 	routing.IpfsRouting
 }
 

routing/mock/server2.go

@@ -0,0 +1,38 @@
+package mockrouting
+
+import (
+	context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/code.google.com/p/go.net/context"
+	ds "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore"
+	sync "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-datastore/sync"
+	mocknet "github.com/jbenet/go-ipfs/net/mock"
+	dht "github.com/jbenet/go-ipfs/routing/dht"
+	"github.com/jbenet/go-ipfs/util/testutil"
+)
+
+type mocknetserver struct {
+	mn mocknet.Mocknet
+}
+
+func NewDHTNetwork(mn mocknet.Mocknet) Server {
+	return &mocknetserver{
+		mn: mn,
+	}
+}
+
+func (rs *mocknetserver) Client(p testutil.Peer) Client {
+	return rs.ClientWithDatastore(context.TODO(), p, ds.NewMapDatastore())
+}
+
+func (rs *mocknetserver) ClientWithDatastore(ctx context.Context, p testutil.Peer, ds ds.Datastore) Client {
+
+	// FIXME AddPeer doesn't appear to be idempotent
+
+	net, err := rs.mn.AddPeer(p.PrivateKey(), p.Address())
+	if err != nil {
+		panic("FIXME")
+		// return nil, debugerror.Wrap(err)
+	}
+	return dht.NewDHT(ctx, p.ID(), net, sync.MutexWrap(ds))
+}
+
+var _ Server = &mocknetserver{}