mirror of
https://github.com/logos-messaging/logos-messaging-nim.git
synced 2026-01-02 14:03:06 +00:00
121 lines
4.1 KiB
Nim
121 lines
4.1 KiB
Nim
{.push raises: [].}
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import std/options, results, chronicles, chronos, metrics, bearssl/rand, stew/byteutils
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import libp2p/peerid
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import
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../waku_core/peers,
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../node/peer_manager,
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../node/delivery_monitor/publish_observer,
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../utils/requests,
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../waku_core,
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./common,
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./protocol_metrics,
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./rpc,
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./rpc_codec
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logScope:
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topics = "waku lightpush client"
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type WakuLightPushClient* = ref object
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peerManager*: PeerManager
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rng*: ref rand.HmacDrbgContext
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publishObservers: seq[PublishObserver]
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proc new*(
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T: type WakuLightPushClient, peerManager: PeerManager, rng: ref rand.HmacDrbgContext
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): T =
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WakuLightPushClient(peerManager: peerManager, rng: rng)
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proc addPublishObserver*(wl: WakuLightPushClient, obs: PublishObserver) =
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wl.publishObservers.add(obs)
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proc sendPushRequest(
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wl: WakuLightPushClient, req: LightPushRequest, peer: PeerId | RemotePeerInfo
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): Future[WakuLightPushResult] {.async.} =
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let connection = (await wl.peerManager.dialPeer(peer, WakuLightPushCodec)).valueOr:
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waku_lightpush_v3_errors.inc(labelValues = [dialFailure])
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return lighpushErrorResult(
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NO_PEERS_TO_RELAY, dialFailure & ": " & $peer & " is not accessible"
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)
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await connection.writeLP(req.encode().buffer)
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var buffer: seq[byte]
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try:
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buffer = await connection.readLp(DefaultMaxRpcSize.int)
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except LPStreamRemoteClosedError:
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error "Failed to read responose from peer", error = getCurrentExceptionMsg()
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return lightpushResultInternalError(
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"Failed to read response from peer: " & getCurrentExceptionMsg()
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)
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let response = LightpushResponse.decode(buffer).valueOr:
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error "failed to decode response"
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waku_lightpush_v3_errors.inc(labelValues = [decodeRpcFailure])
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return lightpushResultInternalError(decodeRpcFailure)
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if response.requestId != req.requestId and
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response.statusCode != TOO_MANY_REQUESTS.uint32:
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error "response failure, requestId mismatch",
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requestId = req.requestId, responseRequestId = response.requestId
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return lightpushResultInternalError("response failure, requestId mismatch")
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return toPushResult(response)
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proc publish*(
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wl: WakuLightPushClient,
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pubSubTopic: Option[PubsubTopic] = none(PubsubTopic),
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wakuMessage: WakuMessage,
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peer: PeerId | RemotePeerInfo,
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): Future[WakuLightPushResult] {.async, gcsafe.} =
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var message = wakuMessage
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if message.timestamp == 0:
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message.timestamp = getNowInNanosecondTime()
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when peer is PeerId:
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info "publish",
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peerId = shortLog(peer),
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msg_hash = computeMessageHash(pubsubTopic.get(""), message).to0xHex
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else:
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info "publish",
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peerId = shortLog(peer.peerId),
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msg_hash = computeMessageHash(pubsubTopic.get(""), message).to0xHex
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let pushRequest = LightpushRequest(
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requestId: generateRequestId(wl.rng), pubSubTopic: pubSubTopic, message: message
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)
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let publishedCount = ?await wl.sendPushRequest(pushRequest, peer)
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for obs in wl.publishObservers:
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obs.onMessagePublished(pubSubTopic.get(""), message)
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return lightpushSuccessResult(publishedCount)
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proc publishToAny*(
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wl: WakuLightPushClient, pubSubTopic: PubsubTopic, wakuMessage: WakuMessage
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): Future[WakuLightPushResult] {.async, gcsafe.} =
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## This proc is similar to the publish one but in this case
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## we don't specify a particular peer and instead we get it from peer manager
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var message = wakuMessage
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if message.timestamp == 0:
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message.timestamp = getNowInNanosecondTime()
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info "publishToAny", msg_hash = computeMessageHash(pubsubTopic, message).to0xHex
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let peer = wl.peerManager.selectPeer(WakuLightPushCodec).valueOr:
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# TODO: check if it is matches the situation - shall we distinguish client side missing peers from server side?
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return lighpushErrorResult(NO_PEERS_TO_RELAY, "no suitable remote peers")
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let pushRequest = LightpushRequest(
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requestId: generateRequestId(wl.rng),
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pubSubTopic: some(pubSubTopic),
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message: message,
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)
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let publishedCount = ?await wl.sendPushRequest(pushRequest, peer)
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for obs in wl.publishObservers:
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obs.onMessagePublished(pubSubTopic, message)
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return lightpushSuccessResult(publishedCount)
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