go-waku/mobile/api_discovery.go

82 lines
1.8 KiB
Go

package gowaku
import (
"context"
"errors"
"time"
"github.com/waku-org/go-waku/waku/v2/dnsdisc"
)
type DnsDiscoveryItem struct {
PeerID string `json:"peerID"`
Addresses []string `json:"multiaddrs"`
ENR string `json:"enr,omitempty"`
}
func DnsDiscovery(url string, nameserver string, ms int) string {
var ctx context.Context
var cancel context.CancelFunc
if ms > 0 {
ctx, cancel = context.WithTimeout(context.Background(), time.Duration(int(ms))*time.Millisecond)
defer cancel()
} else {
ctx = context.Background()
}
var dnsDiscOpt []dnsdisc.DnsDiscoveryOption
if nameserver != "" {
dnsDiscOpt = append(dnsDiscOpt, dnsdisc.WithNameserver(nameserver))
}
nodes, err := dnsdisc.RetrieveNodes(ctx, url, dnsDiscOpt...)
if err != nil {
return MakeJSONResponse(err)
}
var response []DnsDiscoveryItem
for _, n := range nodes {
item := DnsDiscoveryItem{
PeerID: n.PeerID.String(),
}
for _, addr := range n.PeerInfo.Addrs {
item.Addresses = append(item.Addresses, addr.String())
}
if n.ENR != nil {
item.ENR = n.ENR.String()
}
response = append(response, item)
}
return PrepareJSONResponse(response, nil)
}
func StartDiscoveryV5() string {
if wakuState.node == nil {
return MakeJSONResponse(errWakuNodeNotReady)
}
if wakuState.node.DiscV5() == nil {
return MakeJSONResponse(errors.New("DiscV5 is not mounted"))
}
err := wakuState.node.DiscV5().Start(context.Background())
if err != nil {
return MakeJSONResponse(err)
}
return MakeJSONResponse(nil)
}
func StopDiscoveryV5() string {
if wakuState.node == nil {
return MakeJSONResponse(errWakuNodeNotReady)
}
if wakuState.node.DiscV5() == nil {
return MakeJSONResponse(errors.New("DiscV5 is not mounted"))
}
wakuState.node.DiscV5().Stop()
return MakeJSONResponse(nil)
}