mirror of https://github.com/vacp2p/nim-libp2p.git
gossipsub / floodsub fixes (#348)
* mcache fixes * remove timed cache - the window shifting already removes old messages * ref -> object * avoid unnecessary allocations with `[]` operator * simplify init * fix several gossipsub/floodsub issues * floodsub, gossipsub: don't rebroadcast messages that fail validation (!) * floodsub, gossipsub: don't crash when unsubscribing from unknown topics (!) * gossipsub: don't send message to peers that are not interested in the topic, when messages don't share topic list * floodsub: don't repeat all messages for each message when rebroadcasting * floodsub: allow sending empty data * floodsub: fix inefficient unsubscribe * sync floodsub/gossipsub logging * gossipsub: include incoming messages in mcache (!) * gossipsub: don't rebroadcast already-seen messages (!) * pubsubpeer: remove incoming/outgoing seen caches - these are already handled in gossipsub, floodsub and will cause trouble when peers try to resubscribe / regraft topics (because control messages will have same digest) * timedcache: reimplement without timers (fixes timer leaks and extreme inefficiency due to per-message closures, futures etc) * timedcache: ref -> obj
This commit is contained in:
Jacek Sieka
GitHub
parent
c0bc73ddac
commit
5819c6a9a7
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@ -7,16 +7,17 @@
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import sequtils, tables, sets, strutils
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import std/[sequtils, sets, tables]
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import chronos, chronicles, metrics
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import pubsub,
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pubsubpeer,
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timedcache,
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peertable,
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rpc/[messages, message],
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import ./pubsub,
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./pubsubpeer,
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./timedcache,
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./peertable,
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./rpc/[message, messages],
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../../stream/connection,
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../../peerid,
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../../peerinfo
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../../peerinfo,
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../../utility
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logScope:
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topics = "floodsub"
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@ -49,15 +50,13 @@ method subscribeTopic*(f: FloodSub,
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method unsubscribePeer*(f: FloodSub, peer: PeerID) =
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## handle peer disconnects
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##
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trace "unsubscribing floodsub peer", peer = $peer
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let pubSubPeer = f.peers.getOrDefault(peer)
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if pubSubPeer.isNil:
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return
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for t in toSeq(f.floodsub.keys):
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if t in f.floodsub:
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f.floodsub[t].excl(pubSubPeer)
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for _, v in f.floodsub.mpairs():
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v.excl(pubSubPeer)
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procCall PubSub(f).unsubscribePeer(peer)
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@ -66,35 +65,34 @@ method rpcHandler*(f: FloodSub,
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rpcMsg: RPCMsg) {.async.} =
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await procCall PubSub(f).rpcHandler(peer, rpcMsg)
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if rpcMsg.messages.len > 0: # if there are any messages
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for msg in rpcMsg.messages: # for every message
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let msgId = f.msgIdProvider(msg)
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logScope:
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msgId
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peer = peer.id
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if f.seen.put(msgId):
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trace "Dropping already-seen message"
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continue
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if f.verifySignature and not msg.verify(peer.peerId):
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debug "Dropping message due to failed signature verification"
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continue
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if not (await f.validate(msg)):
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trace "Dropping message due to failed validation"
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continue
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var toSendPeers = initHashSet[PubSubPeer]()
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for msg in rpcMsg.messages: # for every message
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let msgId = f.msgIdProvider(msg)
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logScope: msgId
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for t in msg.topicIDs: # for every topic in the message
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f.floodsub.withValue(t, peers): toSendPeers.incl(peers[])
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if msgId notin f.seen:
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f.seen.put(msgId) # add the message to the seen cache
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await handleData(f, t, msg.data)
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if f.verifySignature and not msg.verify(peer.peerId):
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trace "dropping message due to failed signature verification"
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continue
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if not (await f.validate(msg)):
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trace "dropping message due to failed validation"
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continue
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for t in msg.topicIDs: # for every topic in the message
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if t in f.floodsub:
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toSendPeers.incl(f.floodsub[t]) # get all the peers interested in this topic
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await handleData(f, t, msg.data)
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# forward the message to all peers interested in it
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f.broadcast(
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toSeq(toSendPeers),
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RPCMsg(messages: rpcMsg.messages))
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trace "forwared message to peers", peers = toSendPeers.len
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# In theory, if topics are the same in all messages, we could batch - we'd
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# also have to be careful to only include validated messages
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f.broadcast(toSeq(toSendPeers), RPCMsg(messages: @[msg]))
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trace "Forwared message to peers", peers = toSendPeers.len
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method init*(f: FloodSub) =
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proc handler(conn: Connection, proto: string) {.async.} =
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@ -114,30 +112,41 @@ method publish*(f: FloodSub,
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# base returns always 0
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discard await procCall PubSub(f).publish(topic, data)
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if data.len <= 0 or topic.len <= 0:
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trace "topic or data missing, skipping publish"
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logScope: topic
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trace "Publishing message on topic", data = data.shortLog
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if topic.len <= 0: # data could be 0/empty
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debug "Empty topic, skipping publish"
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return 0
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if topic notin f.floodsub:
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trace "missing peers for topic, skipping publish"
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return
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let peers = toSeq(f.floodsub.getOrDefault(topic))
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if peers.len == 0:
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debug "No peers for topic, skipping publish"
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return 0
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trace "publishing on topic", name = topic
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inc f.msgSeqno
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let
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msg = Message.init(f.peerInfo, data, topic, f.msgSeqno, f.sign)
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peers = toSeq(f.floodsub.getOrDefault(topic))
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msgId = f.msgIdProvider(msg)
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# start the future but do not wait yet
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f.broadcast(
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peers,
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RPCMsg(messages: @[msg]))
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logScope: msgId
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trace "Created new message", msg = shortLog(msg), peers = peers.len
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if f.seen.put(msgId):
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# custom msgid providers might cause this
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trace "Dropping already-seen message"
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return 0
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# Try to send to all peers that are known to be interested
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f.broadcast(peers, RPCMsg(messages: @[msg]))
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when defined(libp2p_expensive_metrics):
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libp2p_pubsub_messages_published.inc(labelValues = [topic])
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trace "published message to peers", peers = peers.len,
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msg = msg.shortLog()
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trace "Published message to peers"
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return peers.len
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method unsubscribe*(f: FloodSub,
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@ -156,5 +165,5 @@ method unsubscribeAll*(f: FloodSub, topic: string) {.async.} =
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method initPubSub*(f: FloodSub) =
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procCall PubSub(f).initPubSub()
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f.floodsub = initTable[string, HashSet[PubSubPeer]]()
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f.seen = newTimedCache[string](2.minutes)
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f.seen = TimedCache[string].init(2.minutes)
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f.init()
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@ -7,20 +7,19 @@
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import std/[tables, sets, options, sequtils, random]
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import std/[options, random, sequtils, sets, tables]
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import chronos, chronicles, metrics
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import pubsub,
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floodsub,
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pubsubpeer,
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peertable,
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mcache,
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timedcache,
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rpc/[messages, message],
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import ./pubsub,
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./floodsub,
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./pubsubpeer,
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./peertable,
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./mcache,
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./timedcache,
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./rpc/[messages, message],
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../protocol,
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../../peerinfo,
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../../stream/connection,
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../../peerinfo,
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../../peerid,
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../../errors,
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../../utility
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logScope:
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@ -379,47 +378,36 @@ method rpcHandler*(g: GossipSub,
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rpcMsg: RPCMsg) {.async.} =
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await procCall PubSub(g).rpcHandler(peer, rpcMsg)
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if rpcMsg.messages.len > 0: # if there are any messages
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var toSendPeers: HashSet[PubSubPeer]
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for msg in rpcMsg.messages: # for every message
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let msgId = g.msgIdProvider(msg)
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logScope: msgId
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for msg in rpcMsg.messages: # for every message
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let msgId = g.msgIdProvider(msg)
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logScope:
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msgId
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peer = peer.id
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if msgId in g.seen:
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trace "message already processed, skipping"
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continue
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if g.seen.put(msgId):
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trace "Dropping already-seen message"
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continue
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trace "processing message"
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g.mcache.put(msgId, msg)
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g.seen.put(msgId) # add the message to the seen cache
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if g.verifySignature and not msg.verify(peer.peerId):
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debug "Dropping message due to failed signature verification"
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continue
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if g.verifySignature and not msg.verify(peer.peerId):
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trace "dropping message due to failed signature verification"
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continue
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if not (await g.validate(msg)):
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trace "Dropping message due to failed validation"
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continue
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if not (await g.validate(msg)):
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trace "dropping message due to failed validation"
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continue
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var toSendPeers = initHashSet[PubSubPeer]()
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for t in msg.topicIDs: # for every topic in the message
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g.floodsub.withValue(t, peers): toSendPeers.incl(peers[])
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g.mesh.withValue(t, peers): toSendPeers.incl(peers[])
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# this shouldn't happen
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if g.peerInfo.peerId == msg.fromPeer:
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trace "skipping messages from self"
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continue
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for t in msg.topicIDs: # for every topic in the message
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if t in g.floodsub:
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toSendPeers.incl(g.floodsub[t]) # get all floodsub peers for topic
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if t in g.mesh:
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toSendPeers.incl(g.mesh[t]) # get all mesh peers for topic
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await handleData(g, t, msg.data)
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# forward the message to all peers interested in it
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g.broadcast(
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toSeq(toSendPeers),
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RPCMsg(messages: rpcMsg.messages))
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await handleData(g, t, msg.data)
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# In theory, if topics are the same in all messages, we could batch - we'd
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# also have to be careful to only include validated messages
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g.broadcast(toSeq(toSendPeers), RPCMsg(messages: @[msg]))
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trace "forwared message to peers", peers = toSendPeers.len
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if rpcMsg.control.isSome:
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@ -451,12 +439,13 @@ method unsubscribe*(g: GossipSub,
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for (topic, handler) in topics:
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# delete from mesh only if no handlers are left
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if g.topics[topic].handler.len <= 0:
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if topic notin g.topics:
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if topic in g.mesh:
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let peers = g.mesh.getOrDefault(topic)
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let peers = g.mesh[topic]
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g.mesh.del(topic)
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let prune = RPCMsg(control: some(ControlMessage(prune: @[ControlPrune(topicID: topic)])))
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let prune = RPCMsg(
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control: some(ControlMessage(prune: @[ControlPrune(topicID: topic)])))
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g.broadcast(toSeq(peers), prune)
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method unsubscribeAll*(g: GossipSub, topic: string) {.async.} =
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@ -474,9 +463,12 @@ method publish*(g: GossipSub,
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data: seq[byte]): Future[int] {.async.} =
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# base returns always 0
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discard await procCall PubSub(g).publish(topic, data)
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trace "publishing message on topic", topic, data = data.shortLog
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logScope: topic
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trace "Publishing message on topic", data = data.shortLog
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if topic.len <= 0: # data could be 0/empty
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debug "Empty topic, skipping publish"
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return 0
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var peers: HashSet[PubSubPeer]
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@ -497,29 +489,35 @@ method publish*(g: GossipSub,
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# time
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g.lastFanoutPubSub[topic] = Moment.fromNow(GossipSubFanoutTTL)
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if peers.len == 0:
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debug "No peers for topic, skipping publish"
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return 0
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inc g.msgSeqno
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let
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msg = Message.init(g.peerInfo, data, topic, g.msgSeqno, g.sign)
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msgId = g.msgIdProvider(msg)
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trace "created new message", msg, topic, peers = peers.len
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logScope: msgId
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if msgId notin g.mcache:
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g.mcache.put(msgId, msg)
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trace "Created new message", msg = shortLog(msg), peers = peers.len
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if peers.len > 0:
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g.broadcast(toSeq(peers), RPCMsg(messages: @[msg]))
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when defined(libp2p_expensive_metrics):
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if peers.len > 0:
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libp2p_pubsub_messages_published.inc(labelValues = [topic])
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trace "published message to peers", peers = peers.len,
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msg = msg.shortLog()
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return peers.len
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else:
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debug "No peers for gossip message", topic, msg = msg.shortLog()
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if g.seen.put(msgId):
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# custom msgid providers might cause this
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trace "Dropping already-seen message"
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return 0
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g.mcache.put(msgId, msg)
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g.broadcast(toSeq(peers), RPCMsg(messages: @[msg]))
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when defined(libp2p_expensive_metrics):
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if peers.len > 0:
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libp2p_pubsub_messages_published.inc(labelValues = [topic])
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trace "Published message to peers"
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return peers.len
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method start*(g: GossipSub) {.async.} =
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trace "gossipsub start"
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@ -556,7 +554,7 @@ method initPubSub*(g: GossipSub) =
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procCall FloodSub(g).initPubSub()
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randomize()
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g.mcache = newMCache(GossipSubHistoryGossip, GossipSubHistoryLength)
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g.mcache = MCache.init(GossipSubHistoryGossip, GossipSubHistoryLength)
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g.mesh = initTable[string, HashSet[PubSubPeer]]() # meshes - topic to peer
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g.fanout = initTable[string, HashSet[PubSubPeer]]() # fanout - topic to peer
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g.gossipsub = initTable[string, HashSet[PubSubPeer]]()# topic to peer map of all gossipsub peers
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@ -7,69 +7,57 @@
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import chronos, chronicles
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import tables, options, sets, sequtils
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import rpc/[messages], timedcache
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import std/[sets, tables, options]
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import rpc/[messages]
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export sets, tables, messages, options
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type
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CacheEntry* = object
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mid*: string
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msg*: Message
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topicIDs*: seq[string]
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MCache* = ref object of RootObj
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msgs*: TimedCache[Message]
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MCache* = object of RootObj
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msgs*: Table[string, Message]
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history*: seq[seq[CacheEntry]]
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historySize*: Natural
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windowSize*: Natural
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proc get*(c: MCache, mid: string): Option[Message] =
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func get*(c: MCache, mid: string): Option[Message] =
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result = none(Message)
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if mid in c.msgs:
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result = some(c.msgs[mid])
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proc contains*(c: MCache, mid: string): bool =
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func contains*(c: MCache, mid: string): bool =
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c.get(mid).isSome
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proc put*(c: MCache, msgId: string, msg: Message) =
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proc handler(key: string, val: Message) {.gcsafe.} =
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## make sure we remove the message from history
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## to keep things consisten
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c.history.applyIt(
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it.filterIt(it.mid != msgId)
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)
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func put*(c: var MCache, msgId: string, msg: Message) =
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if msgId notin c.msgs:
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c.msgs.put(msgId, msg, handler = handler)
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c.history[0].add(CacheEntry(mid: msgId, msg: msg))
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c.msgs[msgId] = msg
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c.history[0].add(CacheEntry(mid: msgId, topicIDs: msg.topicIDs))
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proc window*(c: MCache, topic: string): HashSet[string] =
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func window*(c: MCache, topic: string): HashSet[string] =
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result = initHashSet[string]()
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let len =
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if c.windowSize > c.history.len:
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c.history.len
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else:
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c.windowSize
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let
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len = min(c.windowSize, c.history.len)
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if c.history.len > 0:
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for slot in c.history[0..<len]:
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for entry in slot:
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for t in entry.msg.topicIDs:
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if t == topic:
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result.incl(entry.mid)
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break
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for i in 0..<len:
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for entry in c.history[i]:
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for t in entry.topicIDs:
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if t == topic:
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result.incl(entry.mid)
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break
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proc shift*(c: MCache) =
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while c.history.len > c.historySize:
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for entry in c.history.pop():
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c.msgs.del(entry.mid)
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func shift*(c: var MCache) =
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for entry in c.history.pop():
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c.msgs.del(entry.mid)
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c.history.insert(@[])
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proc newMCache*(window: Natural, history: Natural): MCache =
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new result
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result.historySize = history
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result.windowSize = window
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result.history = newSeq[seq[CacheEntry]]()
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result.history.add(@[]) # initialize with empty slot
|
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result.msgs = newTimedCache[Message](2.minutes)
|
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func init*(T: type MCache, window, history: Natural): T =
|
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T(
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history: newSeq[seq[CacheEntry]](history),
|
||||
historySize: history,
|
||||
windowSize: window
|
||||
)
|
||||
|
|
|
|||
|
|
@ -201,16 +201,17 @@ method unsubscribe*(p: PubSub,
|
|||
topics: seq[TopicPair]) {.base, async.} =
|
||||
## unsubscribe from a list of ``topic`` strings
|
||||
for t in topics:
|
||||
for i, h in p.topics[t.topic].handler:
|
||||
if h == t.handler:
|
||||
p.topics[t.topic].handler.del(i)
|
||||
p.topics.withValue(t.topic, subs):
|
||||
for i, h in subs[].handler:
|
||||
if h == t.handler:
|
||||
subs[].handler.del(i)
|
||||
|
||||
# make sure we delete the topic if
|
||||
# no more handlers are left
|
||||
if p.topics[t.topic].handler.len <= 0:
|
||||
p.topics.del(t.topic)
|
||||
# metrics
|
||||
libp2p_pubsub_topics.set(p.topics.len.int64)
|
||||
# make sure we delete the topic if
|
||||
# no more handlers are left
|
||||
if subs.handler.len <= 0:
|
||||
p.topics.del(t.topic) # careful, invalidates subs
|
||||
# metrics
|
||||
libp2p_pubsub_topics.set(p.topics.len.int64)
|
||||
|
||||
proc unsubscribe*(p: PubSub,
|
||||
topic: string,
|
||||
|
|
|
|||
|
|
@ -10,8 +10,6 @@
|
|||
import std/[hashes, options, strutils, tables]
|
||||
import chronos, chronicles, nimcrypto/sha2, metrics
|
||||
import rpc/[messages, message, protobuf],
|
||||
timedcache,
|
||||
../../switch,
|
||||
../../peerid,
|
||||
../../peerinfo,
|
||||
../../stream/connection,
|
||||
|
|
@ -42,8 +40,6 @@ type
|
|||
connections*: seq[Connection] # connections to this peer
|
||||
peerId*: PeerID
|
||||
handler*: RPCHandler
|
||||
sentRpcCache: TimedCache[string] # cache for already sent messages
|
||||
recvdRpcCache: TimedCache[string] # cache for already received messages
|
||||
observers*: ref seq[PubSubObserver] # ref as in smart_ptr
|
||||
dialLock: AsyncLock
|
||||
|
||||
|
|
@ -87,33 +83,24 @@ proc handle*(p: PubSubPeer, conn: Connection) {.async.} =
|
|||
while not conn.atEof:
|
||||
trace "waiting for data"
|
||||
let data = await conn.readLp(64 * 1024)
|
||||
let digest = $(sha256.digest(data))
|
||||
trace "read data from peer", data = data.shortLog
|
||||
if digest in p.recvdRpcCache:
|
||||
when defined(libp2p_expensive_metrics):
|
||||
libp2p_pubsub_skipped_received_messages.inc(labelValues = [p.id])
|
||||
trace "message already received, skipping"
|
||||
continue
|
||||
|
||||
var rmsg = decodeRpcMsg(data)
|
||||
if rmsg.isErr():
|
||||
notice "failed to decode msg from peer"
|
||||
break
|
||||
|
||||
var msg = rmsg.get()
|
||||
|
||||
trace "decoded msg from peer", msg = msg.shortLog
|
||||
trace "decoded msg from peer", msg = rmsg.get().shortLog
|
||||
# trigger hooks
|
||||
p.recvObservers(msg)
|
||||
p.recvObservers(rmsg.get())
|
||||
|
||||
when defined(libp2p_expensive_metrics):
|
||||
for m in msg.messages:
|
||||
for m in rmsg.get().messages:
|
||||
for t in m.topicIDs:
|
||||
# metrics
|
||||
libp2p_pubsub_received_messages.inc(labelValues = [p.id, t])
|
||||
|
||||
await p.handler(p, msg)
|
||||
p.recvdRpcCache.put(digest)
|
||||
await p.handler(p, rmsg.get())
|
||||
finally:
|
||||
await conn.close()
|
||||
|
||||
|
|
@ -227,13 +214,6 @@ proc sendImpl(p: PubSubPeer, msg: RPCMsg) {.async.} =
|
|||
logScope:
|
||||
encoded = shortLog(encoded)
|
||||
|
||||
let digest = $(sha256.digest(encoded))
|
||||
if digest in p.sentRpcCache:
|
||||
trace "message already sent to peer, skipping"
|
||||
when defined(libp2p_expensive_metrics):
|
||||
libp2p_pubsub_skipped_sent_messages.inc(labelValues = [p.id])
|
||||
return
|
||||
|
||||
var conn = await p.getSendConn()
|
||||
try:
|
||||
trace "about to send message"
|
||||
|
|
@ -243,8 +223,6 @@ proc sendImpl(p: PubSubPeer, msg: RPCMsg) {.async.} =
|
|||
|
||||
trace "sending encoded msgs to peer", connId = $conn.oid
|
||||
await conn.writeLp(encoded)
|
||||
|
||||
p.sentRpcCache.put(digest)
|
||||
trace "sent pubsub message to remote", connId = $conn.oid
|
||||
|
||||
when defined(libp2p_expensive_metrics):
|
||||
|
|
@ -282,6 +260,4 @@ proc newPubSubPeer*(peerId: PeerID,
|
|||
result.getConn = getConn
|
||||
result.codec = codec
|
||||
result.peerId = peerId
|
||||
result.sentRpcCache = newTimedCache[string](2.minutes)
|
||||
result.recvdRpcCache = newTimedCache[string](2.minutes)
|
||||
result.dialLock = newAsyncLock()
|
||||
|
|
|
|||
|
|
@ -7,73 +7,59 @@
|
|||
## This file may not be copied, modified, or distributed except according to
|
||||
## those terms.
|
||||
|
||||
import tables
|
||||
import chronos, chronicles
|
||||
import std/[heapqueue, sets]
|
||||
|
||||
logScope:
|
||||
topics = "timedcache"
|
||||
import chronos/timer
|
||||
|
||||
const Timeout* = 10.seconds # default timeout in ms
|
||||
|
||||
type
|
||||
ExpireHandler*[V] = proc(key: string, val: V) {.gcsafe.}
|
||||
TimedEntry*[V] = object of RootObj
|
||||
val: V
|
||||
handler: ExpireHandler[V]
|
||||
TimedEntry*[K] = ref object of RootObj
|
||||
key: K
|
||||
expiresAt: Moment
|
||||
|
||||
TimedCache*[V] = ref object of RootObj
|
||||
cache*: Table[string, TimedEntry[V]]
|
||||
onExpire*: ExpireHandler[V]
|
||||
timeout*: Duration
|
||||
TimedCache*[K] = object of RootObj
|
||||
expiries: HeapQueue[TimedEntry[K]]
|
||||
entries: HashSet[K]
|
||||
timeout: Duration
|
||||
|
||||
# TODO: This belong in chronos, temporary left here until chronos is updated
|
||||
proc addTimer*(at: Duration, cb: CallbackFunc, udata: pointer = nil) =
|
||||
## Arrange for the callback ``cb`` to be called at the given absolute
|
||||
## timestamp ``at``. You can also pass ``udata`` to callback.
|
||||
addTimer(Moment.fromNow(at), cb, udata)
|
||||
func `<`*(a, b: TimedEntry): bool =
|
||||
a.expiresAt < b.expiresAt
|
||||
|
||||
proc put*[V](t: TimedCache[V],
|
||||
key: string,
|
||||
val: V = "",
|
||||
timeout: Duration,
|
||||
handler: ExpireHandler[V] = nil) =
|
||||
trace "adding entry to timed cache", key = key
|
||||
t.cache[key] = TimedEntry[V](val: val, handler: handler)
|
||||
func expire*(t: var TimedCache, now: Moment = Moment.now()) =
|
||||
while t.expiries.len() > 0 and t.expiries[0].expiresAt < now:
|
||||
t.entries.excl(t.expiries.pop().key)
|
||||
|
||||
addTimer(
|
||||
timeout,
|
||||
proc (arg: pointer = nil) {.gcsafe.} =
|
||||
trace "deleting expired entry from timed cache", key = key
|
||||
if key in t.cache:
|
||||
let entry = t.cache[key]
|
||||
t.cache.del(key)
|
||||
if not isNil(entry.handler):
|
||||
entry.handler(key, entry.val)
|
||||
func del*[K](t: var TimedCache[K], key: K): bool =
|
||||
# Removes existing key from cache, returning false if it was not present
|
||||
if not t.entries.missingOrExcl(key):
|
||||
for i in 0..<t.expiries.len:
|
||||
if t.expiries[i].key == key:
|
||||
t.expiries.del(i)
|
||||
break
|
||||
true
|
||||
else:
|
||||
false
|
||||
|
||||
func put*[K](t: var TimedCache[K], k: K, now = Moment.now()): bool =
|
||||
# Puts k in cache, returning true if the item was already present and false
|
||||
# otherwise. If the item was already present, its expiry timer will be
|
||||
# refreshed.
|
||||
t.expire(now)
|
||||
|
||||
var res = t.del(k) # Refresh existing item
|
||||
|
||||
t.entries.incl(k)
|
||||
t.expiries.push(TimedEntry[K](key: k, expiresAt: now + t.timeout))
|
||||
|
||||
res
|
||||
|
||||
func contains*[K](t: TimedCache[K], k: K): bool =
|
||||
k in t.entries
|
||||
|
||||
func init*[K](T: type TimedCache[K], timeout: Duration = Timeout): T =
|
||||
T(
|
||||
expiries: initHeapQueue[TimedEntry[K]](),
|
||||
entries: initHashSet[K](),
|
||||
timeout: timeout
|
||||
)
|
||||
|
||||
proc put*[V](t: TimedCache[V],
|
||||
key: string,
|
||||
val: V = "",
|
||||
handler: ExpireHandler[V] = nil) =
|
||||
t.put(key, val, t.timeout, handler)
|
||||
|
||||
proc contains*[V](t: TimedCache[V], key: string): bool =
|
||||
t.cache.contains(key)
|
||||
|
||||
proc del*[V](t: TimedCache[V], key: string) =
|
||||
trace "deleting entry from timed cache", key = key
|
||||
t.cache.del(key)
|
||||
|
||||
proc get*[V](t: TimedCache[V], key: string): V =
|
||||
t.cache[key].val
|
||||
|
||||
proc `[]`*[V](t: TimedCache[V], key: string): V =
|
||||
t.get(key)
|
||||
|
||||
proc `[]=`*[V](t: TimedCache[V], key: string, val: V): V =
|
||||
t.put(key, val)
|
||||
|
||||
proc newTimedCache*[V](timeout: Duration = Timeout): TimedCache[V] =
|
||||
new result
|
||||
result.cache = initTable[string, TimedEntry[V]]()
|
||||
result.timeout = timeout
|
||||
|
|
|
|||
|
|
@ -15,14 +15,14 @@ proc randomPeerID(): PeerID =
|
|||
|
||||
suite "MCache":
|
||||
test "put/get":
|
||||
var mCache = newMCache(3, 5)
|
||||
var mCache = MCache.init(3, 5)
|
||||
var msg = Message(fromPeer: randomPeerID(), seqno: "12345".toBytes())
|
||||
let msgId = defaultMsgIdProvider(msg)
|
||||
mCache.put(msgId, msg)
|
||||
check mCache.get(msgId).isSome and mCache.get(msgId).get() == msg
|
||||
|
||||
test "window":
|
||||
var mCache = newMCache(3, 5)
|
||||
var mCache = MCache.init(3, 5)
|
||||
|
||||
for i in 0..<3:
|
||||
var msg = Message(fromPeer: randomPeerID(),
|
||||
|
|
@ -43,7 +43,7 @@ suite "MCache":
|
|||
check mCache.get(id).get().topicIDs[0] == "foo"
|
||||
|
||||
test "shift - shift 1 window at a time":
|
||||
var mCache = newMCache(1, 5)
|
||||
var mCache = MCache.init(1, 5)
|
||||
|
||||
for i in 0..<3:
|
||||
var msg = Message(fromPeer: randomPeerID(),
|
||||
|
|
@ -73,7 +73,7 @@ suite "MCache":
|
|||
check mCache.window("baz").len == 0
|
||||
|
||||
test "shift - 2 windows at a time":
|
||||
var mCache = newMCache(1, 5)
|
||||
var mCache = MCache.init(1, 5)
|
||||
|
||||
for i in 0..<3:
|
||||
var msg = Message(fromPeer: randomPeerID(),
|
||||
|
|
|
|||
|
|
@ -4,4 +4,5 @@ import testgossipinternal,
|
|||
testfloodsub,
|
||||
testgossipsub,
|
||||
testmcache,
|
||||
testtimedcache,
|
||||
testmessage
|
||||
|
|
|
|||
|
|
@ -0,0 +1,34 @@
|
|||
{.used.}
|
||||
|
||||
import std/unittest
|
||||
import chronos/timer
|
||||
import ../../libp2p/protocols/pubsub/timedcache
|
||||
|
||||
suite "TimedCache":
|
||||
test "put/get":
|
||||
var cache = TimedCache[int].init(5.seconds)
|
||||
|
||||
let now = Moment.now()
|
||||
check:
|
||||
not cache.put(1, now)
|
||||
not cache.put(2, now + 3.seconds)
|
||||
|
||||
check:
|
||||
1 in cache
|
||||
2 in cache
|
||||
|
||||
check: not cache.put(3, now + 6.seconds) # expires 1
|
||||
|
||||
check:
|
||||
1 notin cache
|
||||
2 in cache
|
||||
3 in cache
|
||||
|
||||
check:
|
||||
cache.put(2, now + 7.seconds) # refreshes 2
|
||||
not cache.put(4, now + 12.seconds) # expires 3
|
||||
|
||||
check:
|
||||
2 in cache
|
||||
3 notin cache
|
||||
4 in cache
|
||||
Loading…
Reference in New Issue