Esempio n. 1
0
// convenience method for creating two switches connected to each other.
func makeSwitchPair(t testing.TB, initSwitch func(*Switch) *Switch) (*Switch, *Switch) {

	s1PrivKey := acm.GenPrivKeyEd25519()
	s2PrivKey := acm.GenPrivKeyEd25519()

	// Create two switches that will be interconnected.
	s1 := initSwitch(NewSwitch())
	s1.SetNodeInfo(&types.NodeInfo{
		PubKey:  s1PrivKey.PubKey().(acm.PubKeyEd25519),
		Moniker: "switch1",
		ChainID: "testing",
		Version: "123.123.123",
	})
	s1.SetNodePrivKey(s1PrivKey)
	s2 := initSwitch(NewSwitch())
	s2.SetNodeInfo(&types.NodeInfo{
		PubKey:  s2PrivKey.PubKey().(acm.PubKeyEd25519),
		Moniker: "switch2",
		ChainID: "testing",
		Version: "123.123.123",
	})
	s2.SetNodePrivKey(s2PrivKey)

	// Start switches and reactors
	s1.Start()
	s2.Start()

	// Create a listener for s1
	l := NewDefaultListener("tcp", ":8001")

	// Dial the listener & add the connection to s2.
	lAddr := l.ExternalAddress()
	connOut, err := lAddr.Dial()
	if err != nil {
		t.Fatalf("Could not connect to listener address %v", lAddr)
	} else {
		t.Logf("Created a connection to listener address %v", lAddr)
	}
	connIn, ok := <-l.Connections()
	if !ok {
		t.Fatalf("Could not get inbound connection from listener")
	}

	go s1.AddPeerWithConnection(connIn, false) // AddPeer is blocking, requires handshake.
	s2.AddPeerWithConnection(connOut, true)

	// Wait for things to happen, peers to get added...
	time.Sleep(100 * time.Millisecond)

	// Close the server, no longer needed.
	l.Stop()

	return s1, s2
}
func makeSecretConnPair(tb testing.TB) (fooSecConn, barSecConn *SecretConnection) {
	fooConn, barConn := makeDummyConnPair()
	fooPrvKey := acm.GenPrivKeyEd25519()
	fooPubKey := fooPrvKey.PubKey().(acm.PubKeyEd25519)
	barPrvKey := acm.GenPrivKeyEd25519()
	barPubKey := barPrvKey.PubKey().(acm.PubKeyEd25519)

	Parallel(
		func() {
			var err error
			fooSecConn, err = MakeSecretConnection(fooConn, fooPrvKey)
			if err != nil {
				tb.Errorf("Failed to establish SecretConnection for foo: %v", err)
				return
			}
			remotePubBytes := fooSecConn.RemotePubKey()
			if !bytes.Equal(remotePubBytes[:], barPubKey[:]) {
				tb.Errorf("Unexpected fooSecConn.RemotePubKey.  Expected %v, got %v",
					barPubKey, fooSecConn.RemotePubKey())
			}
		},
		func() {
			var err error
			barSecConn, err = MakeSecretConnection(barConn, barPrvKey)
			if barSecConn == nil {
				tb.Errorf("Failed to establish SecretConnection for bar: %v", err)
				return
			}
			remotePubBytes := barSecConn.RemotePubKey()
			if !bytes.Equal(remotePubBytes[:], fooPubKey[:]) {
				tb.Errorf("Unexpected barSecConn.RemotePubKey.  Expected %v, got %v",
					fooPubKey, barSecConn.RemotePubKey())
			}
		})

	return
}
func TestSecretConnectionReadWrite(t *testing.T) {
	fooConn, barConn := makeDummyConnPair()
	fooWrites, barWrites := []string{}, []string{}
	fooReads, barReads := []string{}, []string{}

	// Pre-generate the things to write (for foo & bar)
	for i := 0; i < 100; i++ {
		fooWrites = append(fooWrites, RandStr((RandInt()%(dataMaxSize*5))+1))
		barWrites = append(barWrites, RandStr((RandInt()%(dataMaxSize*5))+1))
	}

	// A helper that will run with (fooConn, fooWrites, fooReads) and vice versa
	genNodeRunner := func(nodeConn dummyConn, nodeWrites []string, nodeReads *[]string) func() {
		return func() {
			// Node handskae
			nodePrvKey := acm.GenPrivKeyEd25519()
			nodeSecretConn, err := MakeSecretConnection(nodeConn, nodePrvKey)
			if err != nil {
				t.Errorf("Failed to establish SecretConnection for node: %v", err)
				return
			}
			// In parallel, handle reads and writes
			Parallel(
				func() {
					// Node writes
					for _, nodeWrite := range nodeWrites {
						n, err := nodeSecretConn.Write([]byte(nodeWrite))
						if err != nil {
							t.Errorf("Failed to write to nodeSecretConn: %v", err)
							return
						}
						if n != len(nodeWrite) {
							t.Errorf("Failed to write all bytes. Expected %v, wrote %v", len(nodeWrite), n)
							return
						}
					}
					nodeConn.PipeWriter.Close()
				},
				func() {
					// Node reads
					readBuffer := make([]byte, dataMaxSize)
					for {
						n, err := nodeSecretConn.Read(readBuffer)
						if err == io.EOF {
							return
						} else if err != nil {
							t.Errorf("Failed to read from nodeSecretConn: %v", err)
							return
						}
						*nodeReads = append(*nodeReads, string(readBuffer[:n]))
					}
					nodeConn.PipeReader.Close()
				})
		}
	}

	// Run foo & bar in parallel
	Parallel(
		genNodeRunner(fooConn, fooWrites, &fooReads),
		genNodeRunner(barConn, barWrites, &barReads),
	)

	// A helper to ensure that the writes and reads match.
	// Additionally, small writes (<= dataMaxSize) must be atomically read.
	compareWritesReads := func(writes []string, reads []string) {
		for {
			// Pop next write & corresponding reads
			var read, write string = "", writes[0]
			var readCount = 0
			for _, readChunk := range reads {
				read += readChunk
				readCount += 1
				if len(write) <= len(read) {
					break
				}
				if len(write) <= dataMaxSize {
					break // atomicity of small writes
				}
			}
			// Compare
			if write != read {
				t.Errorf("Expected to read %X, got %X", write, read)
			}
			// Iterate
			writes = writes[1:]
			reads = reads[readCount:]
			if len(writes) == 0 {
				break
			}
		}
	}

	compareWritesReads(fooWrites, barReads)
	compareWritesReads(barWrites, fooReads)

}
Esempio n. 4
0
func NewNode() *Node {
	// Get BlockStore
	blockStoreDB := dbm.GetDB("blockstore")
	blockStore := bc.NewBlockStore(blockStoreDB)

	// Get State
	stateDB := dbm.GetDB("state")
	state := sm.LoadState(stateDB)
	var genDoc *stypes.GenesisDoc
	if state == nil {
		genDoc, state = sm.MakeGenesisStateFromFile(stateDB, config.GetString("genesis_file"))
		state.Save()
		// write the gendoc to db
		buf, n, err := new(bytes.Buffer), new(int64), new(error)
		wire.WriteJSON(genDoc, buf, n, err)
		stateDB.Set(stypes.GenDocKey, buf.Bytes())
		if *err != nil {
			Exit(Fmt("Unable to write gendoc to db: %v", err))
		}
	} else {
		genDocBytes := stateDB.Get(stypes.GenDocKey)
		err := new(error)
		wire.ReadJSONPtr(&genDoc, genDocBytes, err)
		if *err != nil {
			Exit(Fmt("Unable to read gendoc from db: %v", err))
		}
	}
	// add the chainid to the global config
	config.Set("chain_id", state.ChainID)

	// Get PrivValidator
	privValidatorFile := config.GetString("priv_validator_file")
	privValidator := types.LoadOrGenPrivValidator(privValidatorFile)

	// Generate node PrivKey
	privKey := acm.GenPrivKeyEd25519()

	// Make event switch
	eventSwitch := events.NewEventSwitch()
	_, err := eventSwitch.Start()
	if err != nil {
		Exit(Fmt("Failed to start switch: %v", err))
	}

	// Make PEXReactor
	book := p2p.NewAddrBook(config.GetString("addrbook_file"))
	pexReactor := p2p.NewPEXReactor(book)

	// Make BlockchainReactor
	bcReactor := bc.NewBlockchainReactor(state.Copy(), blockStore, config.GetBool("fast_sync"))

	// Make MempoolReactor
	mempool := mempl.NewMempool(state.Copy())
	mempoolReactor := mempl.NewMempoolReactor(mempool)

	// Make ConsensusReactor
	consensusState := consensus.NewConsensusState(state.Copy(), blockStore, mempoolReactor)
	consensusReactor := consensus.NewConsensusReactor(consensusState, blockStore, config.GetBool("fast_sync"))
	if privValidator != nil {
		consensusReactor.SetPrivValidator(privValidator)
	}

	// Make p2p network switch
	sw := p2p.NewSwitch()
	sw.AddReactor("PEX", pexReactor)
	sw.AddReactor("MEMPOOL", mempoolReactor)
	sw.AddReactor("BLOCKCHAIN", bcReactor)
	sw.AddReactor("CONSENSUS", consensusReactor)

	// add the event switch to all services
	// they should all satisfy events.Eventable
	SetFireable(eventSwitch, pexReactor, bcReactor, mempoolReactor, consensusReactor)

	// run the profile server
	profileHost := config.GetString("prof_laddr")
	if profileHost != "" {
		go func() {
			log.Warn("Profile server", "error", http.ListenAndServe(profileHost, nil))
		}()
	}

	// set vm log level
	vm.SetDebug(config.GetBool("vm_log"))

	return &Node{
		sw:               sw,
		evsw:             eventSwitch,
		book:             book,
		blockStore:       blockStore,
		pexReactor:       pexReactor,
		bcReactor:        bcReactor,
		mempoolReactor:   mempoolReactor,
		consensusState:   consensusState,
		consensusReactor: consensusReactor,
		privValidator:    privValidator,
		genDoc:           genDoc,
		privKey:          privKey,
	}
}