610 lines
13 KiB
Go
610 lines
13 KiB
Go
package service
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import (
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"errors"
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"fmt"
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"git.lumeweb.com/LumeWeb/libs5-go/ed25519"
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"git.lumeweb.com/LumeWeb/libs5-go/encoding"
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"git.lumeweb.com/LumeWeb/libs5-go/interfaces"
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"git.lumeweb.com/LumeWeb/libs5-go/net"
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"git.lumeweb.com/LumeWeb/libs5-go/protocol"
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"git.lumeweb.com/LumeWeb/libs5-go/protocol/base"
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"git.lumeweb.com/LumeWeb/libs5-go/protocol/signed"
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"git.lumeweb.com/LumeWeb/libs5-go/structs"
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"git.lumeweb.com/LumeWeb/libs5-go/types"
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"git.lumeweb.com/LumeWeb/libs5-go/utils"
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"github.com/vmihailenco/msgpack/v5"
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bolt "go.etcd.io/bbolt"
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"go.uber.org/zap"
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"net/url"
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"sort"
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"sync"
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"time"
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)
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var _ interfaces.P2PService = (*P2PImpl)(nil)
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var _ interfaces.NodeVotes = (*NodeVotesImpl)(nil)
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var (
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errUnsupportedProtocol = errors.New("unsupported protocol")
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errConnectionIdMissingNodeID = errors.New("connection id missing node id")
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)
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const nodeBucketName = "nodes"
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type P2PImpl struct {
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logger *zap.Logger
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nodeKeyPair *ed25519.KeyPairEd25519
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localNodeID *encoding.NodeId
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networkID string
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nodesBucket *bolt.Bucket
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node interfaces.Node
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inited bool
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reconnectDelay structs.Map
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peers structs.Map
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peersPending structs.Map
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selfConnectionUris []*url.URL
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outgoingPeerBlocklist structs.Map
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incomingPeerBlockList structs.Map
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incomingIPBlocklist structs.Map
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outgoingPeerFailures structs.Map
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maxOutgoingPeerFailures uint
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}
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func NewP2P(node interfaces.Node) *P2PImpl {
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uri, err := url.Parse(fmt.Sprintf("wss://%s:%d/s5/p2p", node.Config().HTTP.API.Domain, node.Config().HTTP.API.Port))
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if err != nil {
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node.Logger().Fatal("failed to HTTP API URL Config", zap.Error(err))
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}
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service := &P2PImpl{
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logger: node.Logger(),
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nodeKeyPair: node.Config().KeyPair,
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networkID: node.Config().P2P.Network,
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node: node,
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inited: false,
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reconnectDelay: structs.NewMap(),
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peers: structs.NewMap(),
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peersPending: structs.NewMap(),
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selfConnectionUris: []*url.URL{uri},
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outgoingPeerBlocklist: structs.NewMap(),
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incomingPeerBlockList: structs.NewMap(),
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incomingIPBlocklist: structs.NewMap(),
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outgoingPeerFailures: structs.NewMap(),
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maxOutgoingPeerFailures: node.Config().P2P.MaxOutgoingPeerFailures,
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}
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return service
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}
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func (p *P2PImpl) SelfConnectionUris() []*url.URL {
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return p.selfConnectionUris
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}
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func (p *P2PImpl) Node() interfaces.Node {
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return p.node
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}
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func (p *P2PImpl) Peers() structs.Map {
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return p.peers
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}
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func (p *P2PImpl) Start() error {
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config := p.Node().Config()
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if len(config.P2P.Peers.Initial) > 0 {
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initialPeers := config.P2P.Peers.Initial
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for _, peer := range initialPeers {
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u, err := url.Parse(peer)
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if err != nil {
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return err
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}
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peer := peer
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go func() {
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err := p.ConnectToNode([]*url.URL{u}, false, nil)
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if err != nil {
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p.logger.Error("failed to connect to initial peer", zap.Error(err), zap.String("peer", peer))
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}
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}()
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}
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}
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return nil
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}
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func (p *P2PImpl) Stop() error {
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panic("implement me")
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}
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func (p *P2PImpl) Init() error {
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if p.inited {
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return nil
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}
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p.localNodeID = encoding.NewNodeId(p.nodeKeyPair.PublicKey())
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err := utils.CreateBucket(nodeBucketName, p.Node().Db())
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if err != nil {
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return err
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}
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p.inited = true
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return nil
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}
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func (p *P2PImpl) ConnectToNode(connectionUris []*url.URL, retried bool, fromPeer net.Peer) error {
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if !p.Node().IsStarted() {
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return nil
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}
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unsupported, _ := url.Parse("http://0.0.0.0")
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unsupported.Scheme = "unsupported"
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var connectionUri *url.URL
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for _, uri := range connectionUris {
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if uri.Scheme == "ws" || uri.Scheme == "wss" {
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connectionUri = uri
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break
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}
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}
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if connectionUri == nil {
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for _, uri := range connectionUris {
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if uri.Scheme == "tcp" {
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connectionUri = uri
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break
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}
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}
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}
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if connectionUri == nil {
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connectionUri = unsupported
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}
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if connectionUri.Scheme == "unsupported" {
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return errUnsupportedProtocol
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}
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scheme := connectionUri.Scheme
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if connectionUri.User == nil {
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return errConnectionIdMissingNodeID
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}
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username := connectionUri.User.Username()
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id, err := encoding.DecodeNodeId(username)
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if err != nil {
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return err
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}
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idString, err := id.ToString()
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if err != nil {
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return err
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}
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if p.peersPending.Contains(idString) || p.peers.Contains(idString) {
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p.logger.Debug("already connected", zap.String("node", connectionUri.String()))
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return nil
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}
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if p.outgoingPeerFailures.Contains(idString) {
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p.logger.Error("outgoing peer is on blocklist", zap.String("node", connectionUri.String()))
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return nil
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}
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reconnectDelay := p.reconnectDelay.GetInt(idString)
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if reconnectDelay == nil {
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delay := 1
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reconnectDelay = &delay
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}
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if id.Equals(p.localNodeID) {
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return nil
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}
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p.logger.Debug("connect", zap.String("node", connectionUri.String()))
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socket, err := net.CreateTransportSocket(scheme, connectionUri)
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if err != nil {
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if retried {
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p.logger.Error("failed to connect, too many retries", zap.String("node", connectionUri.String()), zap.Error(err))
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counter := uint(0)
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if p.outgoingPeerFailures.Contains(idString) {
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tmp := *p.outgoingPeerFailures.GetInt(idString)
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counter = uint(tmp)
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}
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counter++
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p.outgoingPeerFailures.Put(idString, counter)
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if counter >= p.maxOutgoingPeerFailures {
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fromPeerId, err := fromPeer.Id().ToString()
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if err != nil {
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return err
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}
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p.outgoingPeerBlocklist.Put(fromPeerId, true)
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p.incomingPeerBlockList.Put(idString, true)
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err = fromPeer.End()
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if err != nil {
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return err
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}
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}
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return nil
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}
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retried = true
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p.logger.Error("failed to connect", zap.String("node", connectionUri.String()), zap.Error(err))
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delay := p.reconnectDelay.GetInt(idString)
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if delay == nil {
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tmp := 1
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delay = &tmp
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}
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delayDeref := *delay
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p.reconnectDelay.PutInt(idString, delayDeref*2)
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time.Sleep(time.Duration(delayDeref) * time.Second)
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return p.ConnectToNode(connectionUris, retried, fromPeer)
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}
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if p.outgoingPeerFailures.Contains(idString) {
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p.outgoingPeerFailures.Remove(idString)
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}
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peer, err := net.CreateTransportPeer(scheme, &net.TransportPeerConfig{
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Socket: socket,
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Uris: []*url.URL{connectionUri},
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})
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if err != nil {
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return err
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}
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peer.SetId(id)
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p.Node().ConnectionTracker().Add(1)
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peerId, err := peer.Id().ToString()
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if err != nil {
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return err
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}
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p.peersPending.Put(peerId, peer)
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go func() {
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err := p.OnNewPeer(peer, true)
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if err != nil {
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p.logger.Error("peer error", zap.Error(err))
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}
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p.Node().ConnectionTracker().Done()
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}()
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return nil
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}
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func (p *P2PImpl) OnNewPeer(peer net.Peer, verifyId bool) error {
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var wg sync.WaitGroup
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var pid string
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if peer.Id() != nil {
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pid, _ = peer.Id().ToString()
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} else {
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pid = "unknown"
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}
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pip := peer.GetIP()
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if p.incomingIPBlocklist.Contains(pid) {
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p.logger.Error("peer is on identity blocklist", zap.String("peer", pid))
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err := peer.End()
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if err != nil {
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return err
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}
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return nil
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}
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if p.incomingPeerBlockList.Contains(pip) {
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p.logger.Debug("peer is on ip blocklist", zap.String("peer", pid), zap.String("ip", pip))
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err := peer.End()
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if err != nil {
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return err
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}
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return nil
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}
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p.logger.Debug("OnNewPeer started", zap.String("peer", pid))
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challenge := protocol.GenerateChallenge()
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peer.SetChallenge(challenge)
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wg.Add(1)
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go func() {
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defer wg.Done()
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p.OnNewPeerListen(peer, verifyId)
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}()
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handshakeOpenMsg, err := msgpack.Marshal(protocol.NewHandshakeOpen(challenge, p.networkID))
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if err != nil {
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return err
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}
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err = peer.SendMessage(handshakeOpenMsg)
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if err != nil {
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return err
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}
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p.logger.Debug("OnNewPeer sent handshake", zap.String("peer", pid))
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p.logger.Debug("OnNewPeer before Wait", zap.String("peer", pid))
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wg.Wait() // Wait for OnNewPeerListen goroutine to finish
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p.logger.Debug("OnNewPeer ended", zap.String("peer", pid))
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return nil
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}
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func (p *P2PImpl) OnNewPeerListen(peer net.Peer, verifyId bool) {
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var pid string
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if peer.Id() != nil {
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pid, _ = peer.Id().ToString()
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} else {
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pid = "unknown"
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}
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onDone := net.CloseCallback(func() {
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if peer.Id() != nil {
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pid, err := peer.Id().ToString()
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if err != nil {
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p.logger.Error("failed to get peer id", zap.Error(err))
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return
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}
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// Handle closure of the connection
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if p.peers.Contains(pid) {
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p.peers.Remove(pid)
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}
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if p.peersPending.Contains(pid) {
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p.peersPending.Remove(pid)
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}
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}
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})
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onError := net.ErrorCallback(func(args ...interface{}) {
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p.logger.Error("peer error", zap.Any("args", args))
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})
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peer.ListenForMessages(func(message []byte) error {
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imsg := base.NewIncomingMessageUnknown()
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err := msgpack.Unmarshal(message, imsg)
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p.logger.Debug("ListenForMessages", zap.Any("message", imsg), zap.String("peer", pid))
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if err != nil {
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return err
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}
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handler, ok := protocol.GetMessageType(imsg.Kind())
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if ok {
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if handler.RequiresHandshake() && !peer.IsHandshakeDone() {
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p.logger.Debug("Peer is not handshake done, ignoring message", zap.Any("type", types.ProtocolMethodMap[types.ProtocolMethod(imsg.Kind())]))
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return nil
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}
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imsg.SetOriginal(message)
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handler.SetIncomingMessage(imsg)
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handler.SetSelf(handler)
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err := msgpack.Unmarshal(imsg.Data(), handler)
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if err != nil {
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return err
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}
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err = handler.HandleMessage(p.node, peer, verifyId)
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if err != nil {
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return err
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}
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}
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return nil
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}, net.ListenerOptions{
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OnClose: &onDone,
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OnError: &onError,
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Logger: p.logger,
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})
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}
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func (p *P2PImpl) readNodeVotes(nodeId *encoding.NodeId) (interfaces.NodeVotes, error) {
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var value []byte
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var found bool
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err := p.node.Db().View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(nodeBucketName))
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if b == nil {
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return fmt.Errorf("Bucket %s not found", nodeBucketName)
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}
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value = b.Get(nodeId.Raw())
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if value == nil {
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return nil
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}
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found = true
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return nil
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})
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if err != nil {
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return nil, err
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}
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if !found {
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return NewNodeVotes(), nil
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}
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var score interfaces.NodeVotes
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err = msgpack.Unmarshal(value, &score)
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if err != nil {
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return nil, err
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}
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return score, nil
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}
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func (p *P2PImpl) saveNodeVotes(nodeId *encoding.NodeId, votes interfaces.NodeVotes) error {
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// Marshal the votes into data
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data, err := msgpack.Marshal(votes)
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if err != nil {
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return err
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}
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// Use a transaction to save the data
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err = p.node.Db().Update(func(tx *bolt.Tx) error {
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// Get or create the bucket
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b := tx.Bucket([]byte(nodeBucketName))
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// Put the data into the bucket
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return b.Put(nodeId.Raw(), data)
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})
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return err
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}
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func (p *P2PImpl) GetNodeScore(nodeId *encoding.NodeId) (float64, error) {
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if nodeId.Equals(p.localNodeID) {
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return 1, nil
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}
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score, err := p.readNodeVotes(nodeId)
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if err != nil {
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return 0.5, err
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}
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return protocol.CalculateNodeScore(score.Good(), score.Bad()), nil
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}
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func (p *P2PImpl) SortNodesByScore(nodes []*encoding.NodeId) ([]*encoding.NodeId, error) {
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scores := make(map[encoding.NodeIdCode]float64)
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var errOccurred error
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for _, nodeId := range nodes {
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score, err := p.GetNodeScore(nodeId)
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if err != nil {
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errOccurred = err
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scores[nodeId.HashCode()] = 0 // You may choose a different default value for error cases
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} else {
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scores[nodeId.HashCode()] = score
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}
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}
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sort.Slice(nodes, func(i, j int) bool {
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return scores[nodes[i].HashCode()] > scores[nodes[j].HashCode()]
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})
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return nodes, errOccurred
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}
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func (p *P2PImpl) SignMessageSimple(message []byte) ([]byte, error) {
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signedMessage := signed.NewSignedMessageRequest(message)
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signedMessage.SetNodeId(p.localNodeID)
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err := signedMessage.Sign(p.Node())
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if err != nil {
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return nil, err
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}
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result, err := msgpack.Marshal(signedMessage)
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if err != nil {
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return nil, err
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}
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return result, nil
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}
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func (p *P2PImpl) AddPeer(peer net.Peer) error {
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peerId, err := peer.Id().ToString()
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if err != nil {
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return err
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}
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p.peers.Put(peerId, peer)
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p.reconnectDelay.Put(peerId, 1)
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if p.peersPending.Contains(peerId) {
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p.peersPending.Remove(peerId)
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}
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return nil
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}
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func (p *P2PImpl) SendPublicPeersToPeer(peer net.Peer, peersToSend []net.Peer) error {
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announceRequest := signed.NewAnnounceRequest(peer, peersToSend)
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message, err := msgpack.Marshal(announceRequest)
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if err != nil {
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return err
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}
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signedMessage, err := p.SignMessageSimple(message)
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if err != nil {
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return err
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}
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err = peer.SendMessage(signedMessage)
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return nil
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}
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func (p *P2PImpl) SendHashRequest(hash *encoding.Multihash, kinds []types.StorageLocationType) error {
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hashRequest := protocol.NewHashRequest(hash, kinds)
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message, err := msgpack.Marshal(hashRequest)
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if err != nil {
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return err
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}
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for _, peer := range p.peers.Values() {
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peerValue, ok := peer.(net.Peer)
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if !ok {
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p.node.Logger().Error("failed to cast peer to net.Peer")
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continue
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}
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err = peerValue.SendMessage(message)
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}
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return nil
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}
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func (p *P2PImpl) UpVote(nodeId *encoding.NodeId) error {
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err := p.vote(nodeId, true)
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if err != nil {
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return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (p *P2PImpl) DownVote(nodeId *encoding.NodeId) error {
|
|
err := p.vote(nodeId, false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (p *P2PImpl) vote(nodeId *encoding.NodeId, upvote bool) error {
|
|
votes, err := p.readNodeVotes(nodeId)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if upvote {
|
|
votes.Upvote()
|
|
} else {
|
|
votes.Downvote()
|
|
}
|
|
|
|
err = p.saveNodeVotes(nodeId, votes)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
func (p *P2PImpl) NodeId() *encoding.NodeId {
|
|
return p.localNodeID
|
|
}
|