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feat: add /connz endpoint with pagination, sorting, and subscription details

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This commit is contained in:
Joseph Doherty
2026-02-22 22:36:28 -05:00
parent 87746168ba
commit 9eb108b1df
3 changed files with 233 additions and 3 deletions
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79
tests/NATS.Server.Tests/MonitorTests.cs
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@@ -98,6 +98,85 @@ public class MonitorTests : IAsyncLifetime
varz.InBytes.ShouldBeGreaterThanOrEqualTo(5L);
}
[Fact]
public async Task Connz_returns_connections()
{
using var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
await sock.ConnectAsync(new IPEndPoint(IPAddress.Loopback, _natsPort));
using var stream = new NetworkStream(sock);
var buf = new byte[4096];
_ = await stream.ReadAsync(buf);
await stream.WriteAsync("CONNECT {\"name\":\"test-client\",\"lang\":\"csharp\",\"version\":\"1.0\"}\r\n"u8.ToArray());
await Task.Delay(200);
var response = await _http.GetAsync($"http://127.0.0.1:{_monitorPort}/connz");
response.StatusCode.ShouldBe(HttpStatusCode.OK);
var connz = await response.Content.ReadFromJsonAsync<Connz>();
connz.ShouldNotBeNull();
connz.NumConns.ShouldBeGreaterThanOrEqualTo(1);
connz.Conns.Length.ShouldBeGreaterThanOrEqualTo(1);
var conn = connz.Conns.First(c => c.Name == "test-client");
conn.Ip.ShouldNotBeNullOrEmpty();
conn.Port.ShouldBeGreaterThan(0);
conn.Lang.ShouldBe("csharp");
conn.Version.ShouldBe("1.0");
conn.Uptime.ShouldNotBeNullOrEmpty();
}
[Fact]
public async Task Connz_pagination()
{
var sockets = new List<Socket>();
try
{
for (int i = 0; i < 3; i++)
{
var s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
await s.ConnectAsync(new IPEndPoint(IPAddress.Loopback, _natsPort));
var ns = new NetworkStream(s);
var buf = new byte[4096];
_ = await ns.ReadAsync(buf);
await ns.WriteAsync("CONNECT {}\r\n"u8.ToArray());
sockets.Add(s);
}
await Task.Delay(200);
var response = await _http.GetAsync($"http://127.0.0.1:{_monitorPort}/connz?limit=2&offset=0");
var connz = await response.Content.ReadFromJsonAsync<Connz>();
connz!.Conns.Length.ShouldBe(2);
connz.Total.ShouldBeGreaterThanOrEqualTo(3);
connz.Limit.ShouldBe(2);
connz.Offset.ShouldBe(0);
}
finally
{
foreach (var s in sockets) s.Dispose();
}
}
[Fact]
public async Task Connz_with_subscriptions()
{
using var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
await sock.ConnectAsync(new IPEndPoint(IPAddress.Loopback, _natsPort));
using var stream = new NetworkStream(sock);
var buf = new byte[4096];
_ = await stream.ReadAsync(buf);
await stream.WriteAsync("CONNECT {}\r\nSUB foo 1\r\nSUB bar 2\r\n"u8.ToArray());
await Task.Delay(200);
var response = await _http.GetAsync($"http://127.0.0.1:{_monitorPort}/connz?subs=true");
var connz = await response.Content.ReadFromJsonAsync<Connz>();
var conn = connz!.Conns.First(c => c.NumSubs >= 2);
conn.Subs.ShouldNotBeNull();
conn.Subs.ShouldContain("foo");
conn.Subs.ShouldContain("bar");
}
private static int GetFreePort()
{
using var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);