Niek Otten
566fc9bcea
On each notification the subscriber reads the zaak's reference (identificatie) through the ACL — the only code allowed to talk to ZGW (§8.1) — and persists it on the register_projection row and in the processed_notifications replay log. Storing it in the log keeps rebuild log-only (ADR-0008): no ACL/ZGW access on rebuild. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
42 lines
1.5 KiB
C#
42 lines
1.5 KiB
C#
using EventSubscriber.Application;
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using Microsoft.EntityFrameworkCore;
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namespace Projection.ReadModel;
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/// <summary>EF Core implementation of the notification log. Idempotency is enforced atomically
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/// by the primary key on <c>key</c>: a duplicate insert raises a unique violation, which is
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/// caught and reported as "already recorded" rather than failing the request.</summary>
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public sealed class EfNotificationLog(ProjectionDbContext db) : INotificationLog
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{
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public async Task<bool> TryRecordAsync(RecordedNotification notification, CancellationToken ct = default)
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{
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db.ProcessedNotifications.Add(new ProcessedNotificationRow
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{
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Key = notification.Key,
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Actie = notification.Actie,
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ZaakId = notification.ZaakId,
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Resource = notification.Resource,
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Reference = notification.Reference,
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ReceivedAt = DateTimeOffset.UtcNow,
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});
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try
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{
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await db.SaveChangesAsync(ct);
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return true;
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}
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catch (DbUpdateException)
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{
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// Already recorded by an earlier (or concurrent) delivery — drop this duplicate.
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db.ChangeTracker.Clear();
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return false;
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}
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}
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public async Task<IReadOnlyList<RecordedNotification>> AllAsync(CancellationToken ct = default)
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=> await db.ProcessedNotifications
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.OrderBy(r => r.ReceivedAt)
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.Select(r => new RecordedNotification(r.Key, r.Actie, r.ZaakId, r.Resource, r.Reference))
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.ToListAsync(ct);
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}
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