Producing messages

Build the canonical envelope with EnvelopeCodec.Make, encode it to JSON with EnvelopeCodec.Encode, then publish the bytes with your own broker client.

using BabelQueue;

var env = EnvelopeCodec.Make(
    "urn:babel:orders:created",
    new Dictionary<string, object?> { ["order_id"] = 1042L, ["amount"] = 99.90 },
    queue: "orders");

string body = EnvelopeCodec.Encode(env); // compact UTF-8 JSON
// await db.ListRightPushAsync("queues:orders", body);
//   /  channel.BasicPublish("", "orders", props, Encoding.UTF8.GetBytes(body));

Encode produces the canonical schema_version: 1 envelope, with meta.lang set to "dotnet":

{
  "job": "urn:babel:orders:created",
  "trace_id": "7b3f9c2a-e41d-4f88-9b2a-1c0d5e6f7a8b",
  "data": { "order_id": 1042, "amount": 99.90 },
  "meta": { "id": "f1e2d3c4-b5a6-4789-90ab-cdef01234567", "queue": "orders", "lang": "dotnet", "schema_version": 1, "created_at": 1749132727000 },
  "attempts": 0
}

Next: Consuming messages.