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https://github.com/logos-messaging/logos-messaging-nim.git
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e3dd6203ae
* deep changes in libwaku to adap to nim-ffi * start using ffi pragma in library * update some binding examples * add missing declare_lib.nim file * properly rename api files in library folder
52 lines
1.6 KiB
Nim
52 lines
1.6 KiB
Nim
import options, std/[json, strformat]
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import chronicles, chronos, results, ffi
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import
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waku/waku_core/message/message,
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waku/waku_core/codecs,
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waku/factory/waku,
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waku/waku_core/message,
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waku/waku_core/topics/pubsub_topic,
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waku/waku_lightpush_legacy/client,
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waku/node/peer_manager/peer_manager,
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library/events/json_message_event,
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library/declare_lib
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proc waku_lightpush_publish(
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ctx: ptr FFIContext[Waku],
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callback: FFICallBack,
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userData: pointer,
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pubSubTopic: cstring,
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jsonWakuMessage: cstring,
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) {.ffi.} =
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if ctx.myLib[].node.wakuLightpushClient.isNil():
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let errorMsg = "LightpushRequest waku.node.wakuLightpushClient is nil"
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error "PUBLISH failed", error = errorMsg
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return err(errorMsg)
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var jsonMessage: JsonMessage
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try:
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let jsonContent = parseJson($jsonWakuMessage)
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jsonMessage = JsonMessage.fromJsonNode(jsonContent).valueOr:
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raise newException(JsonParsingError, $error)
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except JsonParsingError as exc:
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return err(fmt"Error parsing json message: {exc.msg}")
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let msg = json_message_event.toWakuMessage(jsonMessage).valueOr:
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return err("Problem building the WakuMessage: " & $error)
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let peerOpt = ctx.myLib[].node.peerManager.selectPeer(WakuLightPushCodec)
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if peerOpt.isNone():
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let errorMsg = "failed to lightpublish message, no suitable remote peers"
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error "PUBLISH failed", error = errorMsg
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return err(errorMsg)
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let msgHashHex = (
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await ctx.myLib[].node.wakuLegacyLightpushClient.publish(
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$pubsubTopic, msg, peer = peerOpt.get()
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)
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).valueOr:
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error "PUBLISH failed", error = error
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return err($error)
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return ok(msgHashHex)
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