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feat: add closed connection tracking, state filtering, ByStop/ByReason sorting

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This commit is contained in:
Joseph Doherty
2026-02-23 01:01:56 -05:00
parent 1806ae607e
commit e31ba04fdb
5 changed files with 178 additions and 3 deletions
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31
src/NATS.Server/NatsServer.cs
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@@ -19,6 +19,8 @@ public sealed class NatsServer : IMessageRouter, ISubListAccess, IDisposable
{
private readonly NatsOptions _options;
private readonly ConcurrentDictionary<ulong, NatsClient> _clients = new();
private readonly ConcurrentQueue<ClosedClient> _closedClients = new();
private const int MaxClosedClients = 10_000;
private readonly ServerInfo _serverInfo;
private readonly ILogger<NatsServer> _logger;
private readonly ILoggerFactory _loggerFactory;
@@ -64,6 +66,8 @@ public sealed class NatsServer : IMessageRouter, ISubListAccess, IDisposable
public Action? ReOpenLogFile { get; set; }
public IEnumerable<NatsClient> GetClients() => _clients.Values;
public IEnumerable<ClosedClient> GetClosedClients() => _closedClients;
public IEnumerable<Auth.Account> GetAccounts() => _accounts.Values;
public Task WaitForReadyAsync() => _listeningStarted.Task;
@@ -580,6 +584,33 @@ public sealed class NatsServer : IMessageRouter, ISubListAccess, IDisposable
{
_clients.TryRemove(client.Id, out _);
_logger.LogDebug("Removed client {ClientId}", client.Id);
// Snapshot for closed-connections tracking
_closedClients.Enqueue(new ClosedClient
{
Cid = client.Id,
Ip = client.RemoteIp ?? "",
Port = client.RemotePort,
Start = client.StartTime,
Stop = DateTime.UtcNow,
Reason = client.CloseReason.ToReasonString(),
Name = client.ClientOpts?.Name ?? "",
Lang = client.ClientOpts?.Lang ?? "",
Version = client.ClientOpts?.Version ?? "",
InMsgs = Interlocked.Read(ref client.InMsgs),
OutMsgs = Interlocked.Read(ref client.OutMsgs),
InBytes = Interlocked.Read(ref client.InBytes),
OutBytes = Interlocked.Read(ref client.OutBytes),
NumSubs = (uint)client.Subscriptions.Count,
Rtt = client.Rtt,
TlsVersion = client.TlsState?.TlsVersion ?? "",
TlsCipherSuite = client.TlsState?.CipherSuite ?? "",
});
// Cap closed clients list
while (_closedClients.Count > MaxClosedClients)
_closedClients.TryDequeue(out _);
var subList = client.Account?.SubList ?? _globalAccount.SubList;
client.RemoveAllSubscriptions(subList);
client.Account?.RemoveClient(client.Id);