logos-delivery/library/kernel_api/discovery_api.nim
Fabiana Cecin 549834203d
Bump to nim-libp2p 2.0.0
* bump libp2p pin to release/v2.0.0 (c43199378)
* pin nimble.lock: lsquic/websock/boringssl/protobuf_serialization/npeg/jwt
* add libp2p_mix dep and point libp2p/protocols/mix -> libp2p_mix
* migrate rng to libp2p Rng type (prod, channels, noise, tests)
* noise: take Rng, extract bearSslDrbg internally
* waku_switch: TransportConfig factory; withMaxInOut; local MaxConnections
* waku_relay/rendezvous/discv5/kademlia: v2.0.0 API (rng, config, ServiceDiscovery)
* tests: newStandardSwitch shim; PeerId.random(rng); common.rng()/crypto.newRng()
* drop libp2p/utils/semaphore (use chronos AsyncSemaphore)
* add waku/compat/option_valueor shim where needed
* add std/options where transitive re-export dropped
2026-06-02 15:42:58 -03:00

98 lines
3.1 KiB
Nim

import waku/compat/option_valueor
import std/json
import chronos, chronicles, results, strutils, libp2p/multiaddress, ffi
import
waku/factory/waku,
waku/discovery/waku_dnsdisc,
waku/discovery/waku_discv5,
waku/waku_core/peers,
waku/node/waku_node,
waku/node/kernel_api,
library/declare_lib
proc retrieveBootstrapNodes(
enrTreeUrl: string, ipDnsServer: string
): Future[Result[seq[string], string]] {.async.} =
let dnsNameServers = @[parseIpAddress(ipDnsServer)]
let discoveredPeers: seq[RemotePeerInfo] = (
await retrieveDynamicBootstrapNodes(enrTreeUrl, dnsNameServers)
).valueOr:
return err("failed discovering peers from DNS: " & $error)
var multiAddresses = newSeq[string]()
for discPeer in discoveredPeers:
for address in discPeer.addrs:
multiAddresses.add($address & "/p2p/" & $discPeer)
return ok(multiAddresses)
proc updateDiscv5BootstrapNodes(nodes: string, waku: Waku): Result[void, string] =
waku.wakuDiscv5.updateBootstrapRecords(nodes).isOkOr:
return err("error in updateDiscv5BootstrapNodes: " & $error)
return ok()
proc performPeerExchangeRequestTo*(
numPeers: uint64, waku: Waku
): Future[Result[int, string]] {.async.} =
let numPeersRecv = (await waku.node.fetchPeerExchangePeers(numPeers)).valueOr:
return err($error)
return ok(numPeersRecv)
proc waku_discv5_update_bootnodes(
ctx: ptr FFIContext[Waku],
callback: FFICallBack,
userData: pointer,
bootnodes: cstring,
) {.ffi.} =
## Updates the bootnode list used for discovering new peers via DiscoveryV5
## bootnodes - JSON array containing the bootnode ENRs i.e. `["enr:...", "enr:..."]`
updateDiscv5BootstrapNodes($bootnodes, ctx.myLib[]).isOkOr:
error "UPDATE_DISCV5_BOOTSTRAP_NODES failed", error = error
return err($error)
return ok("discovery request processed correctly")
proc waku_dns_discovery(
ctx: ptr FFIContext[Waku],
callback: FFICallBack,
userData: pointer,
enrTreeUrl: cstring,
nameDnsServer: cstring,
timeoutMs: cint,
) {.ffi.} =
let nodes = (await retrieveBootstrapNodes($enrTreeUrl, $nameDnsServer)).valueOr:
error "GET_BOOTSTRAP_NODES failed", error = error
return err($error)
## returns a comma-separated string of bootstrap nodes' multiaddresses
return ok(nodes.join(","))
proc waku_start_discv5(
ctx: ptr FFIContext[Waku], callback: FFICallBack, userData: pointer
) {.ffi.} =
(await ctx.myLib[].wakuDiscv5.start()).isOkOr:
error "START_DISCV5 failed", error = error
return err("error starting discv5: " & $error)
return ok("discv5 started correctly")
proc waku_stop_discv5(
ctx: ptr FFIContext[Waku], callback: FFICallBack, userData: pointer
) {.ffi.} =
await ctx.myLib[].wakuDiscv5.stop()
return ok("discv5 stopped correctly")
proc waku_peer_exchange_request(
ctx: ptr FFIContext[Waku],
callback: FFICallBack,
userData: pointer,
numPeers: uint64,
) {.ffi.} =
let numValidPeers = (await performPeerExchangeRequestTo(numPeers, ctx.myLib[])).valueOr:
error "waku_peer_exchange_request failed", error = error
return err("failed peer exchange: " & $error)
return ok($numValidPeers)