105 lines
2.5 KiB
Nim
105 lines
2.5 KiB
Nim
## Nim-Dagger
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## Copyright (c) 2022 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 std/sequtils
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import pkg/chronos
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import pkg/libp2p
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import pkg/chronicles
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import pkg/questionable
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import pkg/questionable/results
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import pkg/contractabi/address as ca
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import pkg/protobuf_serialization
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import ./stpproto
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import ../discovery
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const
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Codec* = "/dagger/storageproofs/1.0.0"
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MaxMessageSize* = 1 shl 22 # 4MB
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logScope:
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topics = "dagger storageproofs network"
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type
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TagsHandler* = proc(msg: TagsMessage):
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Future[void] {.raises: [Defect], gcsafe.}
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StpNetwork* = ref object of LPProtocol
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switch*: Switch
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discovery*: Discovery
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tagsHandle*: TagsHandler
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proc uploadTags*(
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self: StpNetwork,
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cid: Cid,
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indexes: seq[int],
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tags: seq[seq[byte]],
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host: ca.Address): Future[?!void] {.async.} =
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# Upload tags to `host`
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#
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var msg = TagsMessage(cid: cid.data.buffer)
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for i in indexes:
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msg.tags.add(Tag(idx: i, tag: tags[i]))
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let
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peers = await self.discovery.find(host)
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connFut = await one(peers.mapIt(
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self.switch.dial(
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it.data.peerId,
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it.data.addresses.mapIt( it.address ),
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@[Codec])))
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conn = await connFut
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try:
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await conn.writeLp(
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Protobuf.encode(StorageProofsMessage(tagsMsg: msg)))
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except CancelledError as exc:
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raise exc
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except CatchableError as exc:
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trace "Exception submitting tags", cid, exc = exc.msg
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return failure(exc.msg)
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finally:
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await conn.close()
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return success()
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method init*(self: StpNetwork) =
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## Perform protocol initialization
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##
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proc handle(conn: Connection, proto: string) {.async, gcsafe.} =
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try:
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let
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msg = await conn.readLp(MaxMessageSize)
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message = Protobuf.decode(msg, StorageProofsMessage)
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if message.tagsMsg.tags.len > 0 and not self.tagsHandle.isNil:
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await self.tagsHandle(message.tagsMsg)
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except CatchableError as exc:
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trace "Exception handling Storage Proofs message", exc = exc.msg
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finally:
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await conn.close()
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self.handler = handle
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self.codec = Codec
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proc new*(
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T: type StpNetwork,
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switch: Switch,
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discovery: Discovery): StpNetwork =
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let
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self = StpNetwork(
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switch: switch,
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discovery: discovery)
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self.init()
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self
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