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perf: replace SubList routed-sub string keys

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This commit is contained in:
Joseph Doherty
2026-03-13 09:51:11 -04:00
parent 08bd34c529
commit 348bec36b2
3 changed files with 19 additions and 48 deletions
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7
src/NATS.Server/Subscriptions/RoutedSubKey.cs Normal file
View File

@@ -0,0 +1,7 @@
namespace NATS.Server.Subscriptions;
internal readonly record struct RoutedSubKey(string RouteId, string Account, string Subject, string? Queue)
{
public static RoutedSubKey FromRemoteSubscription(RemoteSubscription sub)
=> new(sub.RouteId, sub.Account, sub.Subject, sub.Queue);
}

41
src/NATS.Server/Subscriptions/SubList.cs
View File

@@ -16,7 +16,7 @@ public sealed class SubList : IDisposable
private readonly ReaderWriterLockSlim _lock = new();
private readonly TrieLevel _root = new();
private readonly SubListCacheSweeper _sweeper = new();
private readonly Dictionary<string, RemoteSubscription> _remoteSubs = new(StringComparer.Ordinal);
private readonly Dictionary<RoutedSubKey, RemoteSubscription> _remoteSubs = [];
private Dictionary<string, CachedResult>? _cache = new(StringComparer.Ordinal);
private uint _count;
private volatile bool _disposed;
@@ -31,8 +31,6 @@ public sealed class SubList : IDisposable
private readonly Dictionary<string, List<Action<bool>>> _queueRemoveNotifications = new(StringComparer.Ordinal);
private readonly record struct CachedResult(SubListResult Result, long Generation);
internal readonly record struct RoutedSubKeyInfo(string RouteId, string Account, string Subject, string? Queue);
public event Action<InterestChange>? InterestChanged;
public SubList()
@@ -178,7 +176,7 @@ public sealed class SubList : IDisposable
_lock.EnterWriteLock();
try
{
var key = BuildRoutedSubKey(sub.RouteId, sub.Account, sub.Subject, sub.Queue);
var key = RoutedSubKey.FromRemoteSubscription(sub);
var changed = false;
if (sub.IsRemoval)
{
@@ -223,7 +221,7 @@ public sealed class SubList : IDisposable
_lock.EnterWriteLock();
try
{
var key = BuildRoutedSubKey(sub.RouteId, sub.Account, sub.Subject, sub.Queue);
var key = RoutedSubKey.FromRemoteSubscription(sub);
if (!_remoteSubs.TryGetValue(key, out var existing))
return;
@@ -240,28 +238,6 @@ public sealed class SubList : IDisposable
}
}
internal static string BuildRoutedSubKey(string routeId, string account, string subject, string? queue)
=> $"{routeId}|{account}|{subject}|{queue}";
internal static string? GetAccNameFromRoutedSubKey(string routedSubKey)
=> GetRoutedSubKeyInfo(routedSubKey)?.Account;
internal static RoutedSubKeyInfo? GetRoutedSubKeyInfo(string routedSubKey)
{
if (string.IsNullOrWhiteSpace(routedSubKey))
return null;
var parts = routedSubKey.Split('|');
if (parts.Length != 4)
return null;
if (parts[0].Length == 0 || parts[1].Length == 0 || parts[2].Length == 0)
return null;
var queue = parts[3].Length == 0 ? null : parts[3];
return new RoutedSubKeyInfo(parts[0], parts[1], parts[2], queue);
}
public int RemoveRemoteSubs(string routeId)
{
_lock.EnterWriteLock();
@@ -270,8 +246,7 @@ public sealed class SubList : IDisposable
var removed = 0;
foreach (var kvp in _remoteSubs.ToArray())
{
var info = GetRoutedSubKeyInfo(kvp.Key);
if (info == null || !string.Equals(info.Value.RouteId, routeId, StringComparison.Ordinal))
if (!string.Equals(kvp.Key.RouteId, routeId, StringComparison.Ordinal))
continue;
if (_remoteSubs.Remove(kvp.Key))
@@ -304,12 +279,8 @@ public sealed class SubList : IDisposable
var removed = 0;
foreach (var kvp in _remoteSubs.ToArray())
{
var info = GetRoutedSubKeyInfo(kvp.Key);
if (info == null)
continue;
if (!string.Equals(info.Value.RouteId, routeId, StringComparison.Ordinal)
|| !string.Equals(info.Value.Account, account, StringComparison.Ordinal))
if (!string.Equals(kvp.Key.RouteId, routeId, StringComparison.Ordinal)
|| !string.Equals(kvp.Key.Account, account, StringComparison.Ordinal))
{
continue;
}

19
tests/NATS.Server.Clustering.Tests/Routes/RouteRemoteSubCleanupParityBatch2Tests.cs
View File

@@ -10,21 +10,14 @@ namespace NATS.Server.Clustering.Tests.Routes;
public class RouteRemoteSubCleanupParityBatch2Tests
{
[Fact]
public void Routed_sub_key_helpers_parse_account_and_queue_fields()
public void Routed_sub_key_exposes_route_account_subject_and_queue_fields()
{
var key = SubList.BuildRoutedSubKey("R1", "A", "orders.*", "q1");
var key = RoutedSubKey.FromRemoteSubscription(new RemoteSubscription("orders.*", "q1", "R1", "A"));
SubList.GetAccNameFromRoutedSubKey(key).ShouldBe("A");
var info = SubList.GetRoutedSubKeyInfo(key);
info.ShouldNotBeNull();
info.Value.RouteId.ShouldBe("R1");
info.Value.Account.ShouldBe("A");
info.Value.Subject.ShouldBe("orders.*");
info.Value.Queue.ShouldBe("q1");
SubList.GetRoutedSubKeyInfo("invalid").ShouldBeNull();
SubList.GetAccNameFromRoutedSubKey("invalid").ShouldBeNull();
key.RouteId.ShouldBe("R1");
key.Account.ShouldBe("A");
key.Subject.ShouldBe("orders.*");
key.Queue.ShouldBe("q1");
}
[Fact]