56 lines
1.7 KiB
Nim
56 lines
1.7 KiB
Nim
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## Nim-LibP2P
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## Copyright (c) 2018 Status Research & Development GmbH
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## Licensed under either of
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## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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## * MIT license ([LICENSE-MIT](LICENSE-MIT))
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## at your option.
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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 tables, sets
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import chronos
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import pubsubpeer,
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../protocol,
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../../connection,
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../../peerinfo
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export PubSubPeer
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type
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TopicHandler* = proc(topic:string, data: seq[byte]): Future[void] {.gcsafe.}
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Topic* = object
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name*: string
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handler*: TopicHandler
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PubSub* = ref object of LPProtocol
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peerInfo*: PeerInfo
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topics*: Table[string, Topic] # local topics
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peers*: Table[string, PubSubPeer] # peerid to peer map
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peerTopics*: Table[string, HashSet[string]] # topic to remote peer map
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method subscribePeer*(p: PubSub, conn: Connection) {.base, async, gcsafe.} =
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## subscribe to a peer to send/receive pubsub messages
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discard
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method unsubscribe*(p: PubSub, topics: seq[string]) {.base, async, gcsafe.} =
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## unsubscribe from a list of ``topic`` strings
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discard
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method subscribe*(p: PubSub,
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topic: string,
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handler: TopicHandler)
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{.base, async, gcsafe.} =
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## subscribe to a topic
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##
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## ``topic`` - a string topic to subscribe to
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##
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## ``handler`` - is a user provided proc
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## that will be triggered
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## on every received message
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##
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p.topics[topic] = Topic(name: topic, handler: handler)
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method publish*(p: PubSub, topic: string, data: seq[byte]) {.base, async, gcsafe.} =
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## publish to a ``topic``
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discard
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