| 1 | package coreapi |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "sort" |
| 6 | "time" |
| 7 | |
| 8 | coreiface "github.com/ipfs/kubo/core/coreiface" |
| 9 | "github.com/ipfs/kubo/tracing" |
| 10 | inet "github.com/libp2p/go-libp2p/core/network" |
| 11 | "github.com/libp2p/go-libp2p/core/peer" |
| 12 | pstore "github.com/libp2p/go-libp2p/core/peerstore" |
| 13 | "github.com/libp2p/go-libp2p/core/protocol" |
| 14 | "github.com/libp2p/go-libp2p/p2p/net/swarm" |
| 15 | ma "github.com/multiformats/go-multiaddr" |
| 16 | "go.opentelemetry.io/otel/attribute" |
| 17 | "go.opentelemetry.io/otel/trace" |
| 18 | ) |
| 19 | |
| 20 | type SwarmAPI CoreAPI |
| 21 | |
| 22 | type connInfo struct { |
| 23 | peerstore pstore.Peerstore |
| 24 | conn inet.Conn |
| 25 | dir inet.Direction |
| 26 | |
| 27 | addr ma.Multiaddr |
| 28 | peer peer.ID |
| 29 | } |
| 30 | |
| 31 | // tag used in the connection manager when explicitly connecting to a peer. |
| 32 | const ( |
| 33 | connectionManagerTag = "user-connect" |
| 34 | connectionManagerWeight = 100 |
| 35 | ) |
| 36 | |
| 37 | func (api *SwarmAPI) Connect(ctx context.Context, pi peer.AddrInfo) error { |
| 38 | ctx, span := tracing.Span(ctx, "CoreAPI.SwarmAPI", "Connect", trace.WithAttributes(attribute.String("peerid", pi.ID.String()))) |
| 39 | defer span.End() |
| 40 | |
| 41 | if api.peerHost == nil { |
| 42 | return coreiface.ErrOffline |
| 43 | } |
| 44 | |
| 45 | if swrm, ok := api.peerHost.Network().(*swarm.Swarm); ok { |
| 46 | swrm.Backoff().Clear(pi.ID) |
| 47 | } |
| 48 | |
| 49 | if err := api.peerHost.Connect(ctx, pi); err != nil { |
| 50 | return err |
| 51 | } |
| 52 | |
| 53 | api.peerHost.ConnManager().TagPeer(pi.ID, connectionManagerTag, connectionManagerWeight) |
| 54 | return nil |
| 55 | } |
| 56 | |
| 57 | func (api *SwarmAPI) Disconnect(ctx context.Context, addr ma.Multiaddr) error { |
| 58 | _, span := tracing.Span(ctx, "CoreAPI.SwarmAPI", "Disconnect", trace.WithAttributes(attribute.String("addr", addr.String()))) |
| 59 | defer span.End() |
| 60 | |
| 61 | if api.peerHost == nil { |
| 62 | return coreiface.ErrOffline |
| 63 | } |
| 64 | |
| 65 | taddr, id := peer.SplitAddr(addr) |
| 66 | if id == "" { |
| 67 | return peer.ErrInvalidAddr |
| 68 | } |
| 69 | |
| 70 | span.SetAttributes(attribute.String("peerid", id.String())) |
| 71 | |
| 72 | net := api.peerHost.Network() |
| 73 | if taddr == nil { |
| 74 | if net.Connectedness(id) != inet.Connected { |
| 75 | return coreiface.ErrNotConnected |
| 76 | } |
| 77 | if err := net.ClosePeer(id); err != nil { |
| 78 | return err |
| 79 | } |
| 80 | return nil |
| 81 | } |
| 82 | for _, conn := range net.ConnsToPeer(id) { |
| 83 | if !conn.RemoteMultiaddr().Equal(taddr) { |
| 84 | continue |
| 85 | } |
| 86 | |
| 87 | return conn.Close() |
| 88 | } |
| 89 | return coreiface.ErrConnNotFound |
| 90 | } |
| 91 | |
| 92 | func (api *SwarmAPI) KnownAddrs(ctx context.Context) (map[peer.ID][]ma.Multiaddr, error) { |
| 93 | _, span := tracing.Span(ctx, "CoreAPI.SwarmAPI", "KnownAddrs") |
| 94 | defer span.End() |
| 95 | |
| 96 | if api.peerHost == nil { |
| 97 | return nil, coreiface.ErrOffline |
| 98 | } |
| 99 | |
| 100 | addrs := make(map[peer.ID][]ma.Multiaddr) |
| 101 | ps := api.peerHost.Network().Peerstore() |
| 102 | for _, p := range ps.Peers() { |
| 103 | addrs[p] = append(addrs[p], ps.Addrs(p)...) |
| 104 | sort.Slice(addrs[p], func(i, j int) bool { |
| 105 | return addrs[p][i].String() < addrs[p][j].String() |
| 106 | }) |
| 107 | } |
| 108 | |
| 109 | return addrs, nil |
| 110 | } |
| 111 | |
| 112 | func (api *SwarmAPI) LocalAddrs(ctx context.Context) ([]ma.Multiaddr, error) { |
| 113 | _, span := tracing.Span(ctx, "CoreAPI.SwarmAPI", "LocalAddrs") |
| 114 | defer span.End() |
| 115 | |
| 116 | if api.peerHost == nil { |
| 117 | return nil, coreiface.ErrOffline |
| 118 | } |
| 119 | |
| 120 | return api.peerHost.Addrs(), nil |
| 121 | } |
| 122 | |
| 123 | func (api *SwarmAPI) ListenAddrs(ctx context.Context) ([]ma.Multiaddr, error) { |
| 124 | _, span := tracing.Span(ctx, "CoreAPI.SwarmAPI", "ListenAddrs") |
| 125 | defer span.End() |
| 126 | |
| 127 | if api.peerHost == nil { |
| 128 | return nil, coreiface.ErrOffline |
| 129 | } |
| 130 | |
| 131 | return api.peerHost.Network().InterfaceListenAddresses() |
| 132 | } |
| 133 | |
| 134 | func (api *SwarmAPI) Peers(ctx context.Context) ([]coreiface.ConnectionInfo, error) { |
| 135 | _, span := tracing.Span(ctx, "CoreAPI.SwarmAPI", "Peers") |
| 136 | defer span.End() |
| 137 | |
| 138 | if api.peerHost == nil { |
| 139 | return nil, coreiface.ErrOffline |
| 140 | } |
| 141 | |
| 142 | conns := api.peerHost.Network().Conns() |
| 143 | |
| 144 | out := make([]coreiface.ConnectionInfo, 0, len(conns)) |
| 145 | for _, c := range conns { |
| 146 | |
| 147 | ci := &connInfo{ |
| 148 | peerstore: api.peerstore, |
| 149 | conn: c, |
| 150 | dir: c.Stat().Direction, |
| 151 | |
| 152 | addr: c.RemoteMultiaddr(), |
| 153 | peer: c.RemotePeer(), |
| 154 | } |
| 155 | |
| 156 | /* |
| 157 | // FIXME(steb): |
| 158 | swcon, ok := c.(*swarm.Conn) |
| 159 | if ok { |
| 160 | ci.muxer = fmt.Sprintf("%T", swcon.StreamConn().Conn()) |
| 161 | } |
| 162 | */ |
| 163 | |
| 164 | out = append(out, ci) |
| 165 | } |
| 166 | |
| 167 | return out, nil |
| 168 | } |
| 169 | |
| 170 | func (ci *connInfo) ID() peer.ID { |
| 171 | return ci.peer |
| 172 | } |
| 173 | |
| 174 | func (ci *connInfo) Address() ma.Multiaddr { |
| 175 | return ci.addr |
| 176 | } |
| 177 | |
| 178 | func (ci *connInfo) Direction() inet.Direction { |
| 179 | return ci.dir |
| 180 | } |
| 181 | |
| 182 | func (ci *connInfo) Latency() (time.Duration, error) { |
| 183 | return ci.peerstore.LatencyEWMA(peer.ID(ci.ID())), nil |
| 184 | } |
| 185 | |
| 186 | func (ci *connInfo) Streams() ([]protocol.ID, error) { |
| 187 | streams := ci.conn.GetStreams() |
| 188 | |
| 189 | out := make([]protocol.ID, len(streams)) |
| 190 | for i, s := range streams { |
| 191 | out[i] = s.Protocol() |
| 192 | } |
| 193 | |
| 194 | return out, nil |
| 195 | } |