466 lines
11 KiB
Go
466 lines
11 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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// See LICENSE for copying information.
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package kademlia
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import (
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"bytes"
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"context"
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"io/ioutil"
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"net"
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"os"
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"path/filepath"
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"strconv"
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"sync/atomic"
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"testing"
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"github.com/stretchr/testify/assert"
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"google.golang.org/grpc"
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testidentity "storj.io/storj/internal/identity"
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"storj.io/storj/internal/teststorj"
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"storj.io/storj/pkg/node"
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"storj.io/storj/pkg/pb"
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"storj.io/storj/pkg/provider"
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"storj.io/storj/pkg/storj"
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)
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const (
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defaultAlpha = 5
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)
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func TestNewKademlia(t *testing.T) {
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rootdir, cleanup := mktempdir(t, "kademlia")
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defer cleanup()
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cases := []struct {
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id storj.NodeID
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bn []pb.Node
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addr string
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expectedErr error
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}{
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{
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id: func() storj.NodeID {
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id, err := testidentity.NewTestIdentity()
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assert.NoError(t, err)
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return id.ID
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}(),
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bn: []pb.Node{{Id: teststorj.NodeIDFromString("foo")}},
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addr: "127.0.0.1:8080",
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},
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{
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id: func() storj.NodeID {
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id, err := testidentity.NewTestIdentity()
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assert.NoError(t, err)
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return id.ID
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}(),
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bn: []pb.Node{{Id: teststorj.NodeIDFromString("foo")}},
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addr: "127.0.0.1:8080",
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},
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}
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for i, v := range cases {
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dir := filepath.Join(rootdir, strconv.Itoa(i))
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ca, err := testidentity.NewTestCA(context.Background())
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assert.NoError(t, err)
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identity, err := ca.NewIdentity()
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assert.NoError(t, err)
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kad, err := NewKademlia(v.id, pb.NodeType_STORAGE, v.bn, v.addr, nil, identity, dir, defaultAlpha)
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assert.NoError(t, err)
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assert.Equal(t, v.expectedErr, err)
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assert.Equal(t, kad.bootstrapNodes, v.bn)
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assert.NotNil(t, kad.nodeClient)
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assert.NotNil(t, kad.routingTable)
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assert.NoError(t, kad.Disconnect())
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}
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}
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func TestPeerDiscovery(t *testing.T) {
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dir, cleanup := mktempdir(t, "kademlia")
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defer cleanup()
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// make new identity
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bootServer, mockBootServer, bootID, bootAddress := startTestNodeServer()
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defer bootServer.Stop()
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testServer, _, testID, testAddress := startTestNodeServer()
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defer testServer.Stop()
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targetServer, _, targetID, targetAddress := startTestNodeServer()
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defer targetServer.Stop()
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bootstrapNodes := []pb.Node{{Id: bootID.ID, Address: &pb.NodeAddress{Address: bootAddress}}}
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metadata := &pb.NodeMetadata{
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Email: "foo@bar.com",
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Wallet: "FarmerWallet",
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}
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k, err := NewKademlia(testID.ID, pb.NodeType_STORAGE, bootstrapNodes, testAddress, metadata, testID, dir, defaultAlpha)
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assert.NoError(t, err)
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rt, err := k.GetRoutingTable(context.Background())
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assert.NoError(t, err)
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assert.Equal(t, rt.Local().Metadata.Email, "foo@bar.com")
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assert.Equal(t, rt.Local().Metadata.Wallet, "FarmerWallet")
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defer func() {
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assert.NoError(t, k.Disconnect())
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}()
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cases := []struct {
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target storj.NodeID
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opts discoveryOptions
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expected *pb.Node
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expectedErr error
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}{
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{target: func() storj.NodeID {
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// this is what the bootstrap node returns
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mockBootServer.returnValue = []*pb.Node{{Id: targetID.ID, Address: &pb.NodeAddress{Address: targetAddress}}}
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return targetID.ID
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}(),
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opts: discoveryOptions{concurrency: 3, bootstrap: true, retries: 1},
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expected: &pb.Node{},
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expectedErr: nil,
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},
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{target: bootID.ID,
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opts: discoveryOptions{concurrency: 3, bootstrap: true, retries: 1},
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expected: nil,
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expectedErr: nil,
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},
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}
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for _, v := range cases {
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err := k.lookup(context.Background(), v.target, v.opts)
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assert.Equal(t, v.expectedErr, err)
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}
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}
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func TestBootstrap(t *testing.T) {
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bn, s, clean := testNode(t, []pb.Node{})
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defer clean()
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defer s.Stop()
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n1, s1, clean1 := testNode(t, []pb.Node{bn.routingTable.self})
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defer clean1()
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defer s1.Stop()
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err := n1.Bootstrap(context.Background())
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assert.NoError(t, err)
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n2, s2, clean2 := testNode(t, []pb.Node{bn.routingTable.self})
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defer clean2()
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defer s2.Stop()
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err = n2.Bootstrap(context.Background())
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assert.NoError(t, err)
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nodeIDs, err := n2.routingTable.nodeBucketDB.List(nil, 0)
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assert.NoError(t, err)
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assert.Len(t, nodeIDs, 3)
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}
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func testNode(t *testing.T, bn []pb.Node) (*Kademlia, *grpc.Server, func()) {
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// new address
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lis, err := net.Listen("tcp", "127.0.0.1:0")
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assert.NoError(t, err)
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// new config
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// new identity
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fid, err := testidentity.NewTestIdentity()
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assert.NoError(t, err)
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// new kademlia
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dir, cleanup := mktempdir(t, "kademlia")
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k, err := NewKademlia(fid.ID, pb.NodeType_STORAGE, bn, lis.Addr().String(), nil, fid, dir, defaultAlpha)
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assert.NoError(t, err)
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s := node.NewServer(k)
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// new ident opts
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identOpt, err := fid.ServerOption()
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assert.NoError(t, err)
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grpcServer := grpc.NewServer(identOpt)
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pb.RegisterNodesServer(grpcServer, s)
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go func() { assert.NoError(t, grpcServer.Serve(lis)) }()
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return k, grpcServer, func() {
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defer cleanup()
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assert.NoError(t, k.Disconnect())
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}
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}
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func TestGetNodes(t *testing.T) {
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var (
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nodeIDA = teststorj.NodeIDFromString("AAAAA")
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nodeIDB = teststorj.NodeIDFromString("BBBBB")
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nodeIDC = teststorj.NodeIDFromString("CCCCC")
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nodeIDD = teststorj.NodeIDFromString("DDDDD")
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)
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lis, err := net.Listen("tcp", "127.0.0.1:0")
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assert.NoError(t, err)
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srv, _ := newTestServer([]*pb.Node{{Id: teststorj.NodeIDFromString("foo")}})
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go func() { assert.NoError(t, srv.Serve(lis)) }()
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defer srv.Stop()
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// make new identity
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fid, err := testidentity.NewTestIdentity()
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assert.NoError(t, err)
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fid2, err := testidentity.NewTestIdentity()
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assert.NoError(t, err)
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fid.ID = nodeIDA
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fid2.ID = nodeIDB
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// create two new unique identities
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assert.NotEqual(t, fid.ID, fid2.ID)
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dir, cleanup := mktempdir(t, "kademlia")
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defer cleanup()
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k, err := NewKademlia(fid.ID, pb.NodeType_STORAGE, []pb.Node{{Id: fid2.ID, Address: &pb.NodeAddress{Address: lis.Addr().String()}}}, lis.Addr().String(), nil, fid, dir, defaultAlpha)
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assert.NoError(t, err)
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defer func() {
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assert.NoError(t, k.Disconnect())
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}()
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// add nodes
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ids := storj.NodeIDList{nodeIDA, nodeIDB, nodeIDC, nodeIDD}
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bw := []int64{1, 2, 3, 4}
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disk := []int64{4, 3, 2, 1}
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nodes := []*pb.Node{}
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for i, v := range ids {
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n := &pb.Node{
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Id: v,
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Restrictions: &pb.NodeRestrictions{
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FreeBandwidth: bw[i],
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FreeDisk: disk[i],
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},
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}
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nodes = append(nodes, n)
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err = k.routingTable.ConnectionSuccess(n)
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assert.NoError(t, err)
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}
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cases := []struct {
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testID string
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start storj.NodeID
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limit int
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restrictions []pb.Restriction
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expected []*pb.Node
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}{
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{testID: "one",
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start: nodeIDB,
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limit: 2,
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restrictions: []pb.Restriction{
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{
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Operator: pb.Restriction_GT,
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Operand: pb.Restriction_FREE_BANDWIDTH,
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Value: int64(2),
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},
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},
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expected: nodes[2:],
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},
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{testID: "two",
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start: nodeIDA,
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limit: 3,
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restrictions: []pb.Restriction{
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{
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Operator: pb.Restriction_GT,
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Operand: pb.Restriction_FREE_BANDWIDTH,
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Value: int64(2),
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},
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{
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Operator: pb.Restriction_LT,
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Operand: pb.Restriction_FREE_DISK,
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Value: int64(2),
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},
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},
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expected: nodes[3:],
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},
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{testID: "three",
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start: nodeIDA,
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limit: 4,
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restrictions: []pb.Restriction{},
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expected: nodes,
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},
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}
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for _, c := range cases {
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t.Run(c.testID, func(t *testing.T) {
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ns, err := k.GetNodes(context.Background(), c.start, c.limit, c.restrictions...)
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assert.NoError(t, err)
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assert.Equal(t, len(c.expected), len(ns))
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for i, n := range ns {
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assert.True(t, bytes.Equal(c.expected[i].Id.Bytes(), n.Id.Bytes()))
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}
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})
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}
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}
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func TestMeetsRestrictions(t *testing.T) {
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cases := []struct {
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testID string
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r []pb.Restriction
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n pb.Node
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expect bool
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}{
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{testID: "pass one",
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r: []pb.Restriction{
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{
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Operator: pb.Restriction_EQ,
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Operand: pb.Restriction_FREE_BANDWIDTH,
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Value: int64(1),
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},
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},
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n: pb.Node{
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Restrictions: &pb.NodeRestrictions{
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FreeBandwidth: int64(1),
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},
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},
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expect: true,
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},
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{testID: "pass multiple",
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r: []pb.Restriction{
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{
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Operator: pb.Restriction_LTE,
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Operand: pb.Restriction_FREE_BANDWIDTH,
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Value: int64(2),
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},
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{
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Operator: pb.Restriction_GTE,
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Operand: pb.Restriction_FREE_DISK,
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Value: int64(2),
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},
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},
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n: pb.Node{
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Restrictions: &pb.NodeRestrictions{
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FreeBandwidth: int64(1),
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FreeDisk: int64(3),
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},
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},
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expect: true,
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},
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{testID: "fail one",
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r: []pb.Restriction{
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{
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Operator: pb.Restriction_LT,
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Operand: pb.Restriction_FREE_BANDWIDTH,
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Value: int64(2),
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},
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{
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Operator: pb.Restriction_GT,
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Operand: pb.Restriction_FREE_DISK,
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Value: int64(2),
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},
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},
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n: pb.Node{
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Restrictions: &pb.NodeRestrictions{
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FreeBandwidth: int64(2),
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FreeDisk: int64(3),
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},
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},
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expect: false,
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},
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{testID: "fail multiple",
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r: []pb.Restriction{
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{
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Operator: pb.Restriction_LT,
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Operand: pb.Restriction_FREE_BANDWIDTH,
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Value: int64(2),
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},
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{
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Operator: pb.Restriction_GT,
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Operand: pb.Restriction_FREE_DISK,
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Value: int64(2),
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},
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},
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n: pb.Node{
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Restrictions: &pb.NodeRestrictions{
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FreeBandwidth: int64(2),
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FreeDisk: int64(2),
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},
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},
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expect: false,
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},
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}
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for _, c := range cases {
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t.Run(c.testID, func(t *testing.T) {
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result := meetsRestrictions(c.r, c.n)
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assert.Equal(t, c.expect, result)
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})
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}
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}
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func mktempdir(t *testing.T, dir string) (string, func()) {
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rootdir, err := ioutil.TempDir("", dir)
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assert.NoError(t, err)
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cleanup := func() {
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assert.NoError(t, os.RemoveAll(rootdir))
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}
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return rootdir, cleanup
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}
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func startTestNodeServer() (*grpc.Server, *mockNodesServer, *provider.FullIdentity, string) {
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lis, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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return nil, nil, nil, ""
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}
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ca, err := testidentity.NewTestCA(context.Background())
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if err != nil {
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return nil, nil, nil, ""
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}
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identity, err := ca.NewIdentity()
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if err != nil {
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return nil, nil, nil, ""
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}
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identOpt, err := identity.ServerOption()
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if err != nil {
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return nil, nil, nil, ""
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}
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grpcServer := grpc.NewServer(identOpt)
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mn := &mockNodesServer{queryCalled: 0}
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pb.RegisterNodesServer(grpcServer, mn)
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go func() {
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if err := grpcServer.Serve(lis); err != nil {
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return
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}
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}()
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return grpcServer, mn, identity, lis.Addr().String()
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}
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func newTestServer(nn []*pb.Node) (*grpc.Server, *mockNodesServer) {
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ca, err := testidentity.NewTestCA(context.Background())
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if err != nil {
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return nil, nil
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}
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identity, err := ca.NewIdentity()
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if err != nil {
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return nil, nil
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}
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identOpt, err := identity.ServerOption()
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if err != nil {
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return nil, nil
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}
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grpcServer := grpc.NewServer(identOpt)
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mn := &mockNodesServer{queryCalled: 0}
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pb.RegisterNodesServer(grpcServer, mn)
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return grpcServer, mn
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}
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type mockNodesServer struct {
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queryCalled int32
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pingCalled int32
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returnValue []*pb.Node
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}
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func (mn *mockNodesServer) Query(ctx context.Context, req *pb.QueryRequest) (*pb.QueryResponse, error) {
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atomic.AddInt32(&mn.queryCalled, 1)
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return &pb.QueryResponse{Response: mn.returnValue}, nil
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}
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func (mn *mockNodesServer) Ping(ctx context.Context, req *pb.PingRequest) (*pb.PingResponse, error) {
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atomic.AddInt32(&mn.pingCalled, 1)
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return &pb.PingResponse{}, nil
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}
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