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test(event-subscriber): the projection is sourced from register records (refs #153)

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Ports, schema and failing tests for the subscriber half of S-19b-2, ahead of the
implementation.

The subscriber now listens on the `objecten` kanaal instead of `zaken`. An Objecten
notification carries no record data — only the object URL — so the record is read back
through the ACL (§8.1), and the zaak-shaped surface goes away: IsZaakCreated /
IsZaakStatusSet / ZaakUrl / ZaakId and ToEntry's `Resource == "status"` mapping are replaced
by IsRegisterRecordWritten + ObjectUrl.

The notification log now holds the projected row itself (register id, status, reference),
so a rebuild is a replay with no mapping rules and no upstream reads. The migration drops
the old columns rather than renaming them — EF scaffolded renames that would have carried
ZGW values into columns meaning something else — and empties both tables, since a
pre-slice row is neither reprojectable nor re-derivable from the new source.

Red: HandleAsync recognises a register write but does not yet read or project it, so the
seven projection assertions fail on an empty store.
This commit is contained in:
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2026-08-28 12:32:15 +02:00
parent 566ef7dd64
commit 142ed454aa
12 changed files with 336 additions and 184 deletions
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services/projection-api/Projection.ReadModel/ProjectionDbContext.cs
+11 -10
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@@ -34,9 +34,8 @@ public sealed class ProjectionDbContext(DbContextOptions<ProjectionDbContext> op
e.ToTable("processed_notifications");
e.HasKey(r => r.Key);
e.Property(r => r.Key).HasColumnName("key");
e.Property(r => r.Actie).HasColumnName("actie").IsRequired();
e.Property(r => r.ZaakId).HasColumnName("zaak_id").IsRequired();
e.Property(r => r.Resource).HasColumnName("resource").IsRequired();
e.Property(r => r.RegisterId).HasColumnName("register_id").IsRequired();
e.Property(r => r.Status).HasColumnName("status").IsRequired();
e.Property(r => r.Reference).HasColumnName("reference");
e.Property(r => r.ReceivedAt).HasColumnName("received_at");
});
@@ -56,18 +55,20 @@ public sealed class RegisterEntryRow
public string? NaamPlaceholder { get; set; }
}
/// <summary>An accepted notification, retained so the projection can be rebuilt without OpenZaak (§8.1).</summary>
/// <summary>An accepted notification, retained so the projection can be rebuilt without reading
/// Objecten or ZGW (§8.1, §8.4). Since S-19b-2 it holds the projected row itself — the register
/// record's id, status and reference — so a rebuild is a replay with no mapping rules (ADR-0030).</summary>
public sealed class ProcessedNotificationRow
{
public required string Key { get; set; }
public required string Actie { get; set; }
public required string ZaakId { get; set; }
/// <summary>The ZGW resource (e.g. <c>zaak</c> or <c>status</c>) — retained so a rebuild reprojects
/// the right status without reading OpenZaak (S-09b).</summary>
public required string Resource { get; set; }
/// <summary>The registration this record is for (the zaak id) — the projection row's key.</summary>
public required string RegisterId { get; set; }
/// <summary>The zaak reference (identificatie), retained so a rebuild reprojects it without the ACL (#78).</summary>
/// <summary>The register status the record carried (INGEDIEND / INGESCHREVEN).</summary>
public required string Status { get; set; }
/// <summary>The citizen-facing reference the record carried — matches the submit confirmation (#78).</summary>
public string? Reference { get; set; }
public DateTimeOffset ReceivedAt { get; set; }