feat(batch10): task2 implement jetstream advisory publish

dotnet/src/ZB.MOM.NatsNet.Server/NatsServer.JetStreamEvents.cs

@@ -0,0 +1,86 @@
+// Copyright 2020-2026 The NATS Authors
+// Licensed under the Apache License, Version 2.0
+
+using System.Text.Json;
+
+namespace ZB.MOM.NatsNet.Server;
+
+public sealed partial class NatsServer
+{
+    internal bool PublishAdvisory(Account? acc, string subject, object advisory) =>
+        PublishAdvisory(acc, subject, advisory, SendInternalAccountMsg);
+
+    internal bool PublishAdvisory(
+        Account? acc,
+        string subject,
+        object advisory,
+        Func<Account, string, byte[], Exception?> sendInternalAccountMessage,
+        Func<Account, string, bool>? hasGatewayInterest = null)
+    {
+        ArgumentNullException.ThrowIfNull(sendInternalAccountMessage);
+
+        var account = acc ?? SystemAccount();
+        if (account is null)
+        {
+            return false;
+        }
+
+        var sublist = account.Sublist;
+        var gatewayInterestCheck = hasGatewayInterest ?? HasGatewayInterest;
+        var hasLocalInterest = sublist != null && sublist.HasInterest(subject);
+        if (!hasLocalInterest && !gatewayInterestCheck(account, subject))
+        {
+            return false;
+        }
+
+        byte[] payload;
+        try
+        {
+            payload = JsonSerializer.SerializeToUtf8Bytes(advisory);
+        }
+        catch (Exception ex)
+        {
+            Warnf("Advisory could not be serialized for account {0}: {1}", account.Name, ex);
+            return false;
+        }
+
+        Exception? err;
+        try
+        {
+            err = sendInternalAccountMessage(account, subject, payload);
+        }
+        catch (Exception ex)
+        {
+            err = ex;
+        }
+
+        if (err != null)
+        {
+            Warnf("Advisory could not be sent for account {0}: {1}", account.Name, err);
+            return false;
+        }
+
+        return true;
+    }
+
+    internal Exception? SendInternalAccountMsg(Account account, string subject, byte[] message)
+    {
+        try
+        {
+            var sendQueue = account.GetSendQueue() ?? NewSendQueue(account);
+            SendQueue.Send(sendQueue, subject, string.Empty, [], message);
+            return null;
+        }
+        catch (Exception ex)
+        {
+            return ex;
+        }
+    }
+
+    internal bool HasGatewayInterest(Account account, string subject)
+    {
+        _ = account;
+        _ = subject;
+        return false;
+    }
+}