117 lines
4.0 KiB
Nim
117 lines
4.0 KiB
Nim
import
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private/types
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const tracingEnabled* = defined(p2pdump)
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when tracingEnabled:
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import
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macros,
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serialization, json_serialization/writer,
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chronicles, chronicles_tail/configuration
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export
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# XXX: Nim visibility rules get in the way here.
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# It would be nice if the users of this module don't have to
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# import json_serializer, but this won't work at the moment,
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# because the `encode` call inside `logMsgEvent` has its symbols
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# mixed in from the module where `logMsgEvent` is called
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# (instead of from this module, which will be more logical).
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init, writeValue, getOutput
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# TODO: File this as an issue
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logStream p2pMessages[json[file(p2p_messages.json,truncate)]]
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p2pMessages.useTailPlugin "p2p_tracing_ctail_plugin.nim"
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template logRecord(eventName: static[string], args: varargs[untyped]) =
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p2pMessages.log LogLevel.NONE, eventName, topics = "p2pdump", args
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proc initTracing*(baseProtocol: ProtocolInfo,
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userProtocols: seq[ProtocolInfo]) =
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once:
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var w = init StringJsonWriter
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proc addProtocol(p: ProtocolInfo) =
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w.writeFieldName p.name
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w.beginRecord()
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for msg in p.messages:
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w.writeField $msg.id, msg.name
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w.endRecordField()
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w.beginRecord()
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addProtocol baseProtocol
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for userProtocol in userProtocols:
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addProtocol userProtocol
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w.endRecord()
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logRecord "p2p_protocols", data = JsonString(w.getOutput)
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proc logMsgEventImpl(eventName: static[string],
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peer: Peer,
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protocol: ProtocolInfo,
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msgId: int,
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json: string) =
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# this is kept as a separate proc to reduce the code bloat
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logRecord eventName, port = int(peer.network.address.tcpPort),
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peer = $peer.remote,
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protocol = protocol.name,
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msgId, data = JsonString(json)
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proc logMsgEvent[Msg](eventName: static[string], peer: Peer, msg: Msg) =
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mixin msgProtocol, protocolInfo, msgId
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logMsgEventImpl(eventName, peer,
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Msg.msgProtocol.protocolInfo,
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Msg.msgId,
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StringJsonWriter.encode(msg))
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proc logSentMsgFields*(peer: NimNode,
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protocolInfo: NimNode,
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msgId: int,
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fields: openarray[NimNode]): NimNode =
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## This generates the tracing code inserted in the message sending procs
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## `fields` contains all the params that were serialized in the message
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var tracer = ident("tracer")
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result = quote do:
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var `tracer` = init StringJsonWriter
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beginRecord(`tracer`)
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for f in fields:
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result.add newCall(bindSym"writeField", tracer, newLit($f), f)
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result.add quote do:
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endRecord(`tracer`)
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logMsgEventImpl("outgoing_msg", `peer`,
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`protocolInfo`, `msgId`, getOutput(`tracer`))
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template logSentMsg*(peer: Peer, msg: auto) =
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logMsgEvent("outgoing_msg", peer, msg)
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template logReceivedMsg*(peer: Peer, msg: auto) =
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logMsgEvent("incoming_msg", peer, msg)
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template logConnectedPeer*(p: Peer) =
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logRecord "peer_connected",
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port = int(p.network.address.tcpPort),
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peer = $p.remote
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template logAcceptedPeer*(p: Peer) =
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logRecord "peer_accepted",
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port = int(p.network.address.tcpPort),
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peer = $p.remote
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template logDisconnectedPeer*(p: Peer) =
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logRecord "peer_disconnected",
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port = int(p.network.address.tcpPort),
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peer = $p.remote
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else:
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template initTracing*(baseProtocol: ProtocolInfo,
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userProtocols: seq[ProtocolInfo])= discard
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template logSentMsg*(peer: Peer, msg: auto) = discard
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template logReceivedMsg*(peer: Peer, msg: auto) = discard
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template logConnectedPeer*(peer: Peer) = discard
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template logAcceptedPeer*(peer: Peer) = discard
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template logDisconnectedPeer*(peer: Peer) = discard
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