lotus/node/modules/lp2p/routing.go
2019-07-02 14:40:25 +02:00

71 lines
1.3 KiB
Go

package lp2p
import (
"context"
"sort"
routing "github.com/libp2p/go-libp2p-core/routing"
dht "github.com/libp2p/go-libp2p-kad-dht"
record "github.com/libp2p/go-libp2p-record"
routinghelpers "github.com/libp2p/go-libp2p-routing-helpers"
"go.uber.org/fx"
)
type BaseIpfsRouting routing.Routing
type Router struct {
routing.Routing
Priority int // less = more important
}
type p2pRouterOut struct {
fx.Out
Router Router `group:"routers"`
}
func BaseRouting(lc fx.Lifecycle, in BaseIpfsRouting) (out p2pRouterOut, dr *dht.IpfsDHT) {
if dht, ok := in.(*dht.IpfsDHT); ok {
dr = dht
lc.Append(fx.Hook{
OnStop: func(ctx context.Context) error {
return dr.Close()
},
})
}
return p2pRouterOut{
Router: Router{
Priority: 1000,
Routing: in,
},
}, dr
}
type p2pOnlineRoutingIn struct {
fx.In
Routers []Router `group:"routers"`
Validator record.Validator
}
func Routing(in p2pOnlineRoutingIn) routing.Routing {
routers := in.Routers
sort.SliceStable(routers, func(i, j int) bool {
return routers[i].Priority < routers[j].Priority
})
irouters := make([]routing.Routing, len(routers))
for i, v := range routers {
irouters[i] = v.Routing
}
return routinghelpers.Tiered{
Routers: irouters,
Validator: in.Validator,
}
}