| 1 | package libp2p |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "sort" |
| 6 | "time" |
| 7 | |
| 8 | version "github.com/ipfs/kubo" |
| 9 | config "github.com/ipfs/kubo/config" |
| 10 | |
| 11 | logging "github.com/ipfs/go-log/v2" |
| 12 | "github.com/libp2p/go-libp2p" |
| 13 | "github.com/libp2p/go-libp2p/core/crypto" |
| 14 | "github.com/libp2p/go-libp2p/core/peer" |
| 15 | "github.com/libp2p/go-libp2p/core/peerstore" |
| 16 | "github.com/libp2p/go-libp2p/p2p/net/connmgr" |
| 17 | "go.uber.org/fx" |
| 18 | ) |
| 19 | |
| 20 | var log = logging.Logger("p2pnode") |
| 21 | |
| 22 | type Libp2pOpts struct { |
| 23 | fx.Out |
| 24 | |
| 25 | Opts []libp2p.Option `group:"libp2p"` |
| 26 | } |
| 27 | |
| 28 | func ConnectionManager(low, high int, grace, silence time.Duration) func() (opts Libp2pOpts, err error) { |
| 29 | return func() (opts Libp2pOpts, err error) { |
| 30 | cm, err := connmgr.NewConnManager(low, high, |
| 31 | connmgr.WithGracePeriod(grace), |
| 32 | connmgr.WithSilencePeriod(silence), |
| 33 | ) |
| 34 | if err != nil { |
| 35 | return opts, err |
| 36 | } |
| 37 | opts.Opts = append(opts.Opts, libp2p.ConnectionManager(cm)) |
| 38 | return |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | func PstoreAddSelfKeys(id peer.ID, sk crypto.PrivKey, ps peerstore.Peerstore) error { |
| 43 | if err := ps.AddPubKey(id, sk.GetPublic()); err != nil { |
| 44 | return err |
| 45 | } |
| 46 | |
| 47 | return ps.AddPrivKey(id, sk) |
| 48 | } |
| 49 | |
| 50 | func UserAgent() func() (opts Libp2pOpts, err error) { |
| 51 | return simpleOpt(libp2p.UserAgent(version.GetUserAgentVersion())) |
| 52 | } |
| 53 | |
| 54 | func simpleOpt(opt libp2p.Option) func() (opts Libp2pOpts, err error) { |
| 55 | return func() (opts Libp2pOpts, err error) { |
| 56 | opts.Opts = append(opts.Opts, opt) |
| 57 | return |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | type priorityOption struct { |
| 62 | priority, defaultPriority config.Priority |
| 63 | opt libp2p.Option |
| 64 | } |
| 65 | |
| 66 | func prioritizeOptions(opts []priorityOption) libp2p.Option { |
| 67 | type popt struct { |
| 68 | priority int64 // lower priority values mean higher priority |
| 69 | opt libp2p.Option |
| 70 | } |
| 71 | enabledOptions := make([]popt, 0, len(opts)) |
| 72 | for _, o := range opts { |
| 73 | if prio, ok := o.priority.WithDefault(o.defaultPriority); ok { |
| 74 | enabledOptions = append(enabledOptions, popt{ |
| 75 | priority: prio, |
| 76 | opt: o.opt, |
| 77 | }) |
| 78 | } |
| 79 | } |
| 80 | sort.Slice(enabledOptions, func(i, j int) bool { |
| 81 | return enabledOptions[i].priority < enabledOptions[j].priority |
| 82 | }) |
| 83 | p2pOpts := make([]libp2p.Option, len(enabledOptions)) |
| 84 | for i, opt := range enabledOptions { |
| 85 | p2pOpts[i] = opt.opt |
| 86 | } |
| 87 | return libp2p.ChainOptions(p2pOpts...) |
| 88 | } |
| 89 | |
| 90 | func ForceReachability(val *config.OptionalString) func() (opts Libp2pOpts, err error) { |
| 91 | return func() (opts Libp2pOpts, err error) { |
| 92 | if val.IsDefault() { |
| 93 | return |
| 94 | } |
| 95 | v := val.WithDefault("unrecognized") |
| 96 | switch v { |
| 97 | case "public": |
| 98 | opts.Opts = append(opts.Opts, libp2p.ForceReachabilityPublic()) |
| 99 | case "private": |
| 100 | opts.Opts = append(opts.Opts, libp2p.ForceReachabilityPrivate()) |
| 101 | default: |
| 102 | return opts, fmt.Errorf("unrecognized reachability option: %s", v) |
| 103 | } |
| 104 | return |
| 105 | } |
| 106 | } |