mirror of
https://github.com/status-im/nim-dagger.git
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276bf5ed4f
- Update async procedures to use explicit raises annotation - Modify TrackedFutures to handle futures with no raised exceptions - Replace `asyncSpawn` with explicit future tracking - Update test suites to use `unittest2` - Standardize error handling across network and async components - Remove deprecated error handling patterns This commit introduces a more robust approach to async error handling and future management, improving type safety and reducing potential runtime errors.
108 lines
3.2 KiB
Nim
108 lines
3.2 KiB
Nim
## Nim-Codex
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## Copyright (c) 2021 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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{.push raises: [].}
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import pkg/chronos
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import pkg/libp2p
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import ../protobuf/blockexc
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import ../protobuf/message
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import ../../errors
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import ../../logutils
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import ../../utils/trackedfutures
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logScope:
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topics = "codex blockexcnetworkpeer"
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const DefaultYieldInterval = 50.millis
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type
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ConnProvider* =
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proc(): Future[Connection] {.gcsafe, async: (raises: [CancelledError]).}
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RPCHandler* = proc(peer: NetworkPeer, msg: Message) {.gcsafe, async: (raises: []).}
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NetworkPeer* = ref object of RootObj
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id*: PeerId
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handler*: RPCHandler
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sendConn: Connection
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getConn: ConnProvider
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yieldInterval*: Duration = DefaultYieldInterval
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trackedFutures: TrackedFutures
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proc connected*(self: NetworkPeer): bool =
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not (isNil(self.sendConn)) and not (self.sendConn.closed or self.sendConn.atEof)
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proc readLoop*(self: NetworkPeer, conn: Connection) {.async: (raises: []).} =
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if isNil(conn):
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trace "No connection to read from", peer = self.id
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return
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trace "Attaching read loop", peer = self.id, connId = conn.oid
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try:
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var nextYield = Moment.now() + self.yieldInterval
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while not conn.atEof or not conn.closed:
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if Moment.now() > nextYield:
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nextYield = Moment.now() + self.yieldInterval
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trace "Yielding in read loop",
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peer = self.id, nextYield = nextYield, interval = self.yieldInterval
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await sleepAsync(10.millis)
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let
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data = await conn.readLp(MaxMessageSize.int)
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msg = Message.protobufDecode(data).mapFailure().tryGet()
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trace "Received message", peer = self.id, connId = conn.oid
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await self.handler(self, msg)
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except CancelledError:
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trace "Read loop cancelled"
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except CatchableError as err:
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warn "Exception in blockexc read loop", msg = err.msg
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finally:
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trace "Detaching read loop", peer = self.id, connId = conn.oid
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await conn.close()
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proc connect*(
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self: NetworkPeer
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): Future[Connection] {.async: (raises: [CancelledError]).} =
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if self.connected:
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trace "Already connected", peer = self.id, connId = self.sendConn.oid
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return self.sendConn
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self.sendConn = await self.getConn()
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self.trackedFutures.track(self.readLoop(self.sendConn))
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return self.sendConn
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proc send*(
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self: NetworkPeer, msg: Message
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) {.async: (raises: [CancelledError, LPStreamError]).} =
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let conn = await self.connect()
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if isNil(conn):
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warn "Unable to get send connection for peer message not sent", peer = self.id
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return
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trace "Sending message", peer = self.id, connId = conn.oid
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await conn.writeLp(protobufEncode(msg))
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func new*(
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T: type NetworkPeer,
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peer: PeerId,
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connProvider: ConnProvider,
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rpcHandler: RPCHandler,
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): NetworkPeer =
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doAssert(not isNil(connProvider), "should supply connection provider")
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NetworkPeer(
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id: peer,
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getConn: connProvider,
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handler: rpcHandler,
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trackedFutures: TrackedFutures(),
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)
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