func TestPushPop(t *testing.T) {
	prq := newPRQ()
	partner := testutil.RandPeerIDFatal(t)
	alphabet := strings.Split("abcdefghijklmnopqrstuvwxyz", "")
	vowels := strings.Split("aeiou", "")
	consonants := func() []string {
		var out []string
		for _, letter := range alphabet {
			skip := false
			for _, vowel := range vowels {
				if letter == vowel {
					skip = true
				}
			}
			if !skip {
				out = append(out, letter)
			}
		}
		return out
	}()
	sort.Strings(alphabet)
	sort.Strings(vowels)
	sort.Strings(consonants)

	// add a bunch of blocks. cancel some. drain the queue. the queue should only have the kept entries

	for _, index := range rand.Perm(len(alphabet)) { // add blocks for all letters
		letter := alphabet[index]
		t.Log(partner.String())

		c := cid.NewCidV0(u.Hash([]byte(letter)))
		prq.Push(&wantlist.Entry{Cid: c, Priority: math.MaxInt32 - index}, partner)
	}
	for _, consonant := range consonants {
		c := cid.NewCidV0(u.Hash([]byte(consonant)))
		prq.Remove(c, partner)
	}

	prq.fullThaw()

	var out []string
	for {
		received := prq.Pop()
		if received == nil {
			break
		}

		out = append(out, received.Entry.Cid.String())
	}

	// Entries popped should already be in correct order
	for i, expected := range vowels {
		exp := cid.NewCidV0(u.Hash([]byte(expected))).String()
		if out[i] != exp {
			t.Fatal("received", out[i], "expected", expected)
		}
	}
}
예제 #2
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파일: gen.go 프로젝트: tswindell/go-ipfs
func RandCidV0() (*cid.Cid, error) {
	buf := make([]byte, 16)
	if _, err := io.ReadFull(u.NewTimeSeededRand(), buf); err != nil {
		return &cid.Cid{}, err
	}
	return cid.NewCidV0(buf), nil
}
예제 #3
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func TestClientFindProviders(t *testing.T) {
	pi := testutil.RandIdentityOrFatal(t)
	rs := NewServer()
	client := rs.Client(pi)

	k := cid.NewCidV0(u.Hash([]byte("hello")))
	err := client.Provide(context.Background(), k)
	if err != nil {
		t.Fatal(err)
	}

	// This is bad... but simulating networks is hard
	time.Sleep(time.Millisecond * 300)
	max := 100

	providersFromClient := client.FindProvidersAsync(context.Background(), k, max)
	isInClient := false
	for pi := range providersFromClient {
		if pi.ID == pi.ID {
			isInClient = true
		}
	}
	if !isInClient {
		t.Fatal("Despite client providing key, client didn't receive peer when finding providers")
	}
}
예제 #4
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func TestClientOverMax(t *testing.T) {
	rs := NewServer()
	k := cid.NewCidV0(u.Hash([]byte("hello")))
	numProvidersForHelloKey := 100
	for i := 0; i < numProvidersForHelloKey; i++ {
		pi := testutil.RandIdentityOrFatal(t)
		err := rs.Client(pi).Provide(context.Background(), k)
		if err != nil {
			t.Fatal(err)
		}
	}

	max := 10
	pi := testutil.RandIdentityOrFatal(t)
	client := rs.Client(pi)

	providersFromClient := client.FindProvidersAsync(context.Background(), k, max)
	i := 0
	for _ = range providersFromClient {
		i++
	}
	if i != max {
		t.Fatal("Too many providers returned")
	}
}
예제 #5
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func TestValidAfter(t *testing.T) {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	pi := testutil.RandIdentityOrFatal(t)
	key := cid.NewCidV0(u.Hash([]byte("mock key")))
	conf := DelayConfig{
		ValueVisibility: delay.Fixed(1 * time.Hour),
		Query:           delay.Fixed(0),
	}

	rs := NewServerWithDelay(conf)

	rs.Client(pi).Provide(ctx, key)

	var providers []pstore.PeerInfo
	providers, err := rs.Client(pi).FindProviders(ctx, key)
	if err != nil {
		t.Fatal(err)
	}
	if len(providers) > 0 {
		t.Fail()
	}

	conf.ValueVisibility.Set(0)
	providers, err = rs.Client(pi).FindProviders(ctx, key)
	if err != nil {
		t.Fatal(err)
	}
	t.Log("providers", providers)
	if len(providers) != 1 {
		t.Fail()
	}
}
예제 #6
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func TestBlockReturnsErr(t *testing.T) {
	off := Exchange(bstore())
	c := cid.NewCidV0(u.Hash([]byte("foo")))
	_, err := off.GetBlock(context.Background(), c)
	if err != nil {
		return // as desired
	}
	t.Fail()
}
예제 #7
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// TODO does dht ensure won't receive self as a provider? probably not.
func TestCanceledContext(t *testing.T) {
	rs := NewServer()
	k := cid.NewCidV0(u.Hash([]byte("hello")))

	// avoid leaking goroutine, without using the context to signal
	// (we want the goroutine to keep trying to publish on a
	// cancelled context until we've tested it doesnt do anything.)
	done := make(chan struct{})
	defer func() { done <- struct{}{} }()

	t.Log("async'ly announce infinite stream of providers for key")
	i := 0
	go func() { // infinite stream
		for {
			select {
			case <-done:
				t.Log("exiting async worker")
				return
			default:
			}

			pi, err := testutil.RandIdentity()
			if err != nil {
				t.Error(err)
			}
			err = rs.Client(pi).Provide(context.Background(), k)
			if err != nil {
				t.Error(err)
			}
			i++
		}
	}()

	local := testutil.RandIdentityOrFatal(t)
	client := rs.Client(local)

	t.Log("warning: max is finite so this test is non-deterministic")
	t.Log("context cancellation could simply take lower priority")
	t.Log("and result in receiving the max number of results")
	max := 1000

	t.Log("cancel the context before consuming")
	ctx, cancelFunc := context.WithCancel(context.Background())
	cancelFunc()
	providers := client.FindProvidersAsync(ctx, k, max)

	numProvidersReturned := 0
	for _ = range providers {
		numProvidersReturned++
	}
	t.Log(numProvidersReturned)

	if numProvidersReturned == max {
		t.Fatal("Context cancel had no effect")
	}
}
// This test checks that peers wont starve out other peers
func TestPeerRepeats(t *testing.T) {
	prq := newPRQ()
	a := testutil.RandPeerIDFatal(t)
	b := testutil.RandPeerIDFatal(t)
	c := testutil.RandPeerIDFatal(t)
	d := testutil.RandPeerIDFatal(t)

	// Have each push some blocks

	for i := 0; i < 5; i++ {
		elcid := cid.NewCidV0(u.Hash([]byte(fmt.Sprint(i))))
		prq.Push(&wantlist.Entry{Cid: elcid}, a)
		prq.Push(&wantlist.Entry{Cid: elcid}, b)
		prq.Push(&wantlist.Entry{Cid: elcid}, c)
		prq.Push(&wantlist.Entry{Cid: elcid}, d)
	}

	// now, pop off four entries, there should be one from each
	var targets []string
	var tasks []*peerRequestTask
	for i := 0; i < 4; i++ {
		t := prq.Pop()
		targets = append(targets, t.Target.Pretty())
		tasks = append(tasks, t)
	}

	expected := []string{a.Pretty(), b.Pretty(), c.Pretty(), d.Pretty()}
	sort.Strings(expected)
	sort.Strings(targets)

	t.Log(targets)
	t.Log(expected)
	for i, s := range targets {
		if expected[i] != s {
			t.Fatal("unexpected peer", s, expected[i])
		}
	}

	// Now, if one of the tasks gets finished, the next task off the queue should
	// be for the same peer
	for blockI := 0; blockI < 4; blockI++ {
		for i := 0; i < 4; i++ {
			// its okay to mark the same task done multiple times here (JUST FOR TESTING)
			tasks[i].Done()

			ntask := prq.Pop()
			if ntask.Target != tasks[i].Target {
				t.Fatal("Expected task from peer with lowest active count")
			}
		}
	}
}
예제 #9
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func TestKeyNotFound(t *testing.T) {

	var pi = testutil.RandIdentityOrFatal(t)
	var key = cid.NewCidV0(u.Hash([]byte("mock key")))
	var ctx = context.Background()

	rs := NewServer()
	providers := rs.Client(pi).FindProvidersAsync(ctx, key, 10)
	_, ok := <-providers
	if ok {
		t.Fatal("should be closed")
	}
}
예제 #10
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// FWIW: At the time of this commit, including a timestamp in task increases
// time cost of Push by 3%.
func BenchmarkTaskQueuePush(b *testing.B) {
	q := newPRQ()
	peers := []peer.ID{
		testutil.RandPeerIDFatal(b),
		testutil.RandPeerIDFatal(b),
		testutil.RandPeerIDFatal(b),
	}
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		c := cid.NewCidV0(u.Hash([]byte(fmt.Sprint(i))))

		q.Push(&wantlist.Entry{Cid: c, Priority: math.MaxInt32}, peers[i%len(peers)])
	}
}
예제 #11
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// EncodeProtobuf returns the encoded raw data version of a Node instance.
// It may use a cached encoded version, unless the force flag is given.
func (n *ProtoNode) EncodeProtobuf(force bool) ([]byte, error) {
	sort.Stable(LinkSlice(n.links)) // keep links sorted
	if n.encoded == nil || force {
		n.cached = nil
		var err error
		n.encoded, err = n.Marshal()
		if err != nil {
			return nil, err
		}
	}

	if n.cached == nil {
		n.cached = cid.NewCidV0(u.Hash(n.encoded))
	}

	return n.encoded, nil
}
예제 #12
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func TestManualHash(t *testing.T) {
	oldDebugState := u.Debug
	defer (func() {
		u.Debug = oldDebugState
	})()

	data := []byte("I can't figure out more names .. data")
	hash, err := mh.Sum(data, mh.SHA2_256, -1)
	if err != nil {
		t.Fatal(err)
	}

	c := cid.NewCidV0(hash)

	u.Debug = false
	block, err := NewBlockWithCid(data, c)
	if err != nil {
		t.Fatal(err)
	}

	if !bytes.Equal(block.Multihash(), hash) {
		t.Error("wrong multihash")
	}

	data[5] = byte((uint32(data[5]) + 5) % 256) // Transfrom hash to be different
	block, err = NewBlockWithCid(data, c)
	if err != nil {
		t.Fatal(err)
	}

	if !bytes.Equal(block.Multihash(), hash) {
		t.Error("wrong multihash")
	}

	u.Debug = true

	block, err = NewBlockWithCid(data, c)
	if err != ErrWrongHash {
		t.Fatal(err)
	}

}
예제 #13
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func TestBlocks(t *testing.T) {
	bstore := blockstore.NewBlockstore(dssync.MutexWrap(ds.NewMapDatastore()))
	bs := New(bstore, offline.Exchange(bstore))
	defer bs.Close()

	o := newObject([]byte("beep boop"))
	h := cid.NewCidV0(u.Hash([]byte("beep boop")))
	if !o.Cid().Equals(h) {
		t.Error("Block key and data multihash key not equal")
	}

	k, err := bs.AddBlock(o)
	if err != nil {
		t.Error("failed to add block to BlockService", err)
		return
	}

	if !k.Equals(o.Cid()) {
		t.Error("returned key is not equal to block key", err)
	}

	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
	defer cancel()
	b2, err := bs.GetBlock(ctx, o.Cid())
	if err != nil {
		t.Error("failed to retrieve block from BlockService", err)
		return
	}

	if !o.Cid().Equals(b2.Cid()) {
		t.Error("Block keys not equal.")
	}

	if !bytes.Equal(o.RawData(), b2.RawData()) {
		t.Error("Block data is not equal.")
	}
}
예제 #14
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// resolveOnce implements resolver. Uses the IPFS routing system to
// resolve SFS-like names.
func (r *routingResolver) resolveOnce(ctx context.Context, name string) (path.Path, error) {
	log.Debugf("RoutingResolve: '%s'", name)
	cached, ok := r.cacheGet(name)
	if ok {
		return cached, nil
	}

	name = strings.TrimPrefix(name, "/ipns/")
	hash, err := mh.FromB58String(name)
	if err != nil {
		// name should be a multihash. if it isn't, error out here.
		log.Warningf("RoutingResolve: bad input hash: [%s]\n", name)
		return "", err
	}

	// use the routing system to get the name.
	// /ipns/<name>
	h := []byte("/ipns/" + string(hash))

	var entry *pb.IpnsEntry
	var pubkey ci.PubKey

	resp := make(chan error, 2)
	go func() {
		ipnsKey := string(h)
		val, err := r.routing.GetValue(ctx, ipnsKey)
		if err != nil {
			log.Warning("RoutingResolve get failed.")
			resp <- err
			return
		}

		entry = new(pb.IpnsEntry)
		err = proto.Unmarshal(val, entry)
		if err != nil {
			resp <- err
			return
		}

		resp <- nil
	}()

	go func() {
		// name should be a public key retrievable from ipfs
		pubk, err := routing.GetPublicKey(r.routing, ctx, hash)
		if err != nil {
			resp <- err
			return
		}

		pubkey = pubk
		resp <- nil
	}()

	for i := 0; i < 2; i++ {
		err = <-resp
		if err != nil {
			return "", err
		}
	}

	// check sig with pk
	if ok, err := pubkey.Verify(ipnsEntryDataForSig(entry), entry.GetSignature()); err != nil || !ok {
		return "", fmt.Errorf("Invalid value. Not signed by PrivateKey corresponding to %v", pubkey)
	}

	// ok sig checks out. this is a valid name.

	// check for old style record:
	valh, err := mh.Cast(entry.GetValue())
	if err != nil {
		// Not a multihash, probably a new record
		p, err := path.ParsePath(string(entry.GetValue()))
		if err != nil {
			return "", err
		}

		r.cacheSet(name, p, entry)
		return p, nil
	} else {
		// Its an old style multihash record
		log.Warning("Detected old style multihash record")
		p := path.FromCid(cid.NewCidV0(valh))
		r.cacheSet(name, p, entry)
		return p, nil
	}
}
예제 #15
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func mkFakeCid(s string) *cid.Cid {
	return cid.NewCidV0(u.Hash([]byte(s)))
}
예제 #16
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func (n *ProtoNode) Cid() *cid.Cid {
	h := n.Multihash()

	return cid.NewCidV0(h)
}
func TestBitswapWithoutRouting(t *testing.T) {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()
	const numPeers = 4

	// create network
	mn := mocknet.New(ctx)

	var nodes []*core.IpfsNode
	for i := 0; i < numPeers; i++ {
		n, err := core.NewNode(ctx, &core.BuildCfg{
			Online:  true,
			Host:    coremock.MockHostOption(mn),
			Routing: core.NilRouterOption, // no routing
		})
		if err != nil {
			t.Fatal(err)
		}
		defer n.Close()
		nodes = append(nodes, n)
	}

	mn.LinkAll()

	// connect them
	for _, n1 := range nodes {
		for _, n2 := range nodes {
			if n1 == n2 {
				continue
			}

			log.Debug("connecting to other hosts")
			p2 := n2.PeerHost.Peerstore().PeerInfo(n2.PeerHost.ID())
			if err := n1.PeerHost.Connect(ctx, p2); err != nil {
				t.Fatal(err)
			}
		}
	}

	// add blocks to each before
	log.Debug("adding block.")
	block0 := blocks.NewBlock([]byte("block0"))
	block1 := blocks.NewBlock([]byte("block1"))

	// put 1 before
	if err := nodes[0].Blockstore.Put(block0); err != nil {
		t.Fatal(err)
	}

	//  get it out.
	for i, n := range nodes {
		// skip first because block not in its exchange. will hang.
		if i == 0 {
			continue
		}

		log.Debugf("%d %s get block.", i, n.Identity)
		b, err := n.Blocks.GetBlock(ctx, cid.NewCidV0(block0.Multihash()))
		if err != nil {
			t.Error(err)
		} else if !bytes.Equal(b.RawData(), block0.RawData()) {
			t.Error("byte comparison fail")
		} else {
			log.Debug("got block: %s", b.Cid())
		}
	}

	// put 1 after
	if err := nodes[1].Blockstore.Put(block1); err != nil {
		t.Fatal(err)
	}

	//  get it out.
	for _, n := range nodes {
		b, err := n.Blocks.GetBlock(ctx, cid.NewCidV0(block1.Multihash()))
		if err != nil {
			t.Error(err)
		} else if !bytes.Equal(b.RawData(), block1.RawData()) {
			t.Error("byte comparison fail")
		} else {
			log.Debug("got block: %s", b.Cid())
		}
	}
}
예제 #18
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// NewBlock creates a Block object from opaque data. It will hash the data.
func NewBlock(data []byte) *BasicBlock {
	// TODO: fix assumptions
	return &BasicBlock{data: data, cid: cid.NewCidV0(u.Hash(data))}
}