mirror of
https://github.com/mudler/LocalAI.git
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128 lines
3.1 KiB
Go
128 lines
3.1 KiB
Go
//go:build p2p
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// +build p2p
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package p2p
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import (
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"context"
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"errors"
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"fmt"
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"net"
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"time"
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"math/rand/v2"
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"github.com/mudler/edgevpn/pkg/node"
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"github.com/mudler/edgevpn/pkg/protocol"
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"github.com/mudler/edgevpn/pkg/types"
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"github.com/rs/zerolog/log"
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)
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func (f *FederatedServer) Start(ctx context.Context) error {
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n, err := NewNode(f.p2ptoken)
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if err != nil {
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return fmt.Errorf("creating a new node: %w", err)
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}
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err = n.Start(ctx)
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if err != nil {
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return fmt.Errorf("creating a new node: %w", err)
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}
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if err := ServiceDiscoverer(ctx, n, f.p2ptoken, f.service, func(servicesID string, tunnel NodeData) {
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log.Debug().Msgf("Discovered node: %s", tunnel.ID)
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}); err != nil {
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return err
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}
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return f.proxy(ctx, n)
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}
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func (fs *FederatedServer) proxy(ctx context.Context, node *node.Node) error {
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log.Info().Msgf("Allocating service '%s' on: %s", fs.service, fs.listenAddr)
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// Open local port for listening
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l, err := net.Listen("tcp", fs.listenAddr)
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if err != nil {
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log.Error().Err(err).Msg("Error listening")
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return err
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}
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// ll.Info("Binding local port on", srcaddr)
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ledger, _ := node.Ledger()
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// Announce ourselves so nodes accepts our connection
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ledger.Announce(
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ctx,
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10*time.Second,
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func() {
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// Retrieve current ID for ip in the blockchain
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//_, found := ledger.GetKey(protocol.UsersLedgerKey, node.Host().ID().String())
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// If mismatch, update the blockchain
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//if !found {
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updatedMap := map[string]interface{}{}
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updatedMap[node.Host().ID().String()] = &types.User{
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PeerID: node.Host().ID().String(),
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Timestamp: time.Now().String(),
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}
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ledger.Add(protocol.UsersLedgerKey, updatedMap)
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// }
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},
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)
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defer l.Close()
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for {
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select {
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case <-ctx.Done():
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return errors.New("context canceled")
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default:
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log.Debug().Msg("New for connection")
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// Listen for an incoming connection.
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conn, err := l.Accept()
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if err != nil {
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fmt.Println("Error accepting: ", err.Error())
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continue
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}
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// Handle connections in a new goroutine, forwarding to the p2p service
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go func() {
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var tunnelAddresses []string
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for _, v := range GetAvailableNodes(fs.service) {
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if v.IsOnline() {
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tunnelAddresses = append(tunnelAddresses, v.TunnelAddress)
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} else {
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log.Info().Msgf("Node %s is offline", v.ID)
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}
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}
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if len(tunnelAddresses) == 0 {
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log.Error().Msg("No available nodes yet")
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return
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}
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// open a TCP stream to one of the tunnels
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// chosen randomly
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// TODO: optimize this and track usage
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tunnelAddr := tunnelAddresses[rand.IntN(len(tunnelAddresses))]
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tunnelConn, err := net.Dial("tcp", tunnelAddr)
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if err != nil {
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log.Error().Err(err).Msg("Error connecting to tunnel")
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return
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}
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log.Info().Msgf("Redirecting %s to %s", conn.LocalAddr().String(), tunnelConn.RemoteAddr().String())
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closer := make(chan struct{}, 2)
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go copyStream(closer, tunnelConn, conn)
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go copyStream(closer, conn, tunnelConn)
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<-closer
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tunnelConn.Close()
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conn.Close()
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// ll.Infof("(service %s) Done handling %s", serviceID, l.Addr().String())
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}()
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}
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}
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}
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