48 lines
1.4 KiB
Zig
48 lines
1.4 KiB
Zig
const std = @import("std");
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const nats = @import("nats");
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fn onMessage(
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userdata: *bool,
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connection: *nats.Connection,
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subscription: *nats.Subscription,
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message: *nats.Message,
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) void {
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_ = subscription;
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std.debug.print("Subject \"{s}\" received message: \"{s}\"\n", .{
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message.getSubject(),
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message.getData() orelse "[null]",
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});
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if (message.getReply()) |reply| {
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connection.publishString(reply, "salutations") catch @panic("HELP");
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}
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userdata.* = true;
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}
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pub fn main() !void {
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const connection = try nats.Connection.connectTo(nats.default_server_url);
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defer connection.destroy();
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var done = false;
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const subscription = try connection.subscribe(bool, "channel", onMessage, &done);
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defer subscription.destroy();
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while (!done) {
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const reply = try connection.requestString("channel", "greetings", 1000);
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defer reply.destroy();
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std.debug.print("Reply \"{s}\" got message: {s}\n", .{
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reply.getSubject(),
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reply.getData() orelse "[null]",
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});
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}
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const stats = try connection.getStats();
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std.debug.print(
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"Server stats => {{\n\tmessages_in: {d} ({d} B),\n\tmessages_out: {d} ({d} B),\n\treconnects: {d}\n}}\n",
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.{ stats.messages_in, stats.bytes_in, stats.messages_out, stats.bytes_out, stats.reconnects },
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);
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}
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