mirror of
https://github.com/logos-messaging/logos-messaging-nim.git
synced 2026-06-27 20:10:02 +00:00
369ad1b430
Expose the reliable-channel layer through the v0.1.3 FFI: - channel_create / channel_send / channel_close call the ReliableChannelManager api (createReliableChannel / send / closeChannel), marshalling channel id + base64 payload + ephemeral by hand - channel message received / sent / errored are surfaced by listening to the channel-layer broker events in start_node and forwarding them through callEventCallback (received payload base64-encoded), dropped in stop_node Stays on nim-ffi v0.1.3 (no typed/CBOR rewrite). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
77 lines
2.1 KiB
Nim
77 lines
2.1 KiB
Nim
import std/json
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import chronos, results, ffi
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import
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logos_delivery/waku/common/base64,
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logos_delivery,
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logos_delivery/waku/waku_core/topics/content_topic,
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logos_delivery/api/types,
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../declare_lib
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proc logosdelivery_channel_create(
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ctx: ptr FFIContext[LogosDelivery],
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callback: FFICallBack,
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userData: pointer,
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channelIdStr: cstring,
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contentTopicStr: cstring,
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senderIdStr: cstring,
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) {.ffi.} =
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requireInitializedNode(ctx, "ChannelCreate"):
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return err(errMsg)
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let id = ctx.myLib[].reliableChannelManager.createReliableChannel(
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ChannelId($channelIdStr),
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ContentTopic($contentTopicStr),
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SdsParticipantID($senderIdStr),
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).valueOr:
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return err("ChannelCreate failed: " & $error)
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return ok(string(id))
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proc logosdelivery_channel_send(
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ctx: ptr FFIContext[LogosDelivery],
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callback: FFICallBack,
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userData: pointer,
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channelIdStr: cstring,
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messageJson: cstring,
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) {.ffi.} =
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## `messageJson` carries `{ "payload": <base64>, "ephemeral": <bool> }`.
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requireInitializedNode(ctx, "ChannelSend"):
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return err(errMsg)
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var jsonNode: JsonNode
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try:
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jsonNode = parseJson($messageJson)
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except Exception as e:
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return err("Failed to parse channel message JSON: " & e.msg)
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if not jsonNode.hasKey("payload"):
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return err("Missing payload field")
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let payload = base64.decode(Base64String(jsonNode["payload"].getStr())).valueOr:
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return err("invalid payload format: " & error)
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let ephemeral = jsonNode.getOrDefault("ephemeral").getBool(false)
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let requestId = (
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await ctx.myLib[].reliableChannelManager.send(
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ChannelId($channelIdStr), payload, ephemeral
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)
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).valueOr:
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return err("ChannelSend failed: " & $error)
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return ok($requestId)
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proc logosdelivery_channel_close(
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ctx: ptr FFIContext[LogosDelivery],
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callback: FFICallBack,
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userData: pointer,
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channelIdStr: cstring,
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) {.ffi.} =
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requireInitializedNode(ctx, "ChannelClose"):
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return err(errMsg)
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(await ctx.myLib[].reliableChannelManager.closeChannel(ChannelId($channelIdStr))).isOkOr:
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return err("ChannelClose failed: " & $error)
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return ok("")
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