Niek Otten
c70840e5b7
Failing unit + acceptance tests for the Event Subscriber's NotificationProjector: a zaken/zaak/create notification yields one INGEDIEND projection row, duplicate deliveries collapse to one row, non-zaak/non-create notifications are ignored, and a rebuild repopulates the projection from the durable notification log (PRD §8.4). The projector is a no-op stub so the tests compile and fail on the assertions; the implementation follows in the green commit. The notification log doubles as the idempotency guard and rebuild source so a rebuild needs no OpenZaak access (§8.1). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
31 lines
1.5 KiB
C#
31 lines
1.5 KiB
C#
namespace EventSubscriber.Application;
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/// <summary>
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/// An inbound NRC (Open Notificaties) notification, as Open Notificaties POSTs it to an
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/// abonnement callback. Only the fields the projection needs are modelled; the full ZGW
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/// "Notificatie" resource also carries <c>aanmaakdatum</c> and <c>kenmerken</c> which the
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/// minimal projection ignores (bsn is deferred — see ADR-0008). For a <c>zaken</c>/<c>zaak</c>/<c>create</c>
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/// notification <c>hoofdObject</c> and <c>resourceUrl</c> are both the created zaak's URL.
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/// </summary>
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public sealed record Notification(
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string Kanaal,
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string Resource,
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string Actie,
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Uri ResourceUrl)
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{
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/// <summary>The only event the walking-skeleton projection reacts to: a zaak being created.</summary>
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public bool IsZaakCreated =>
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Kanaal == "zaken" && Resource == "zaak" && Actie == "create";
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/// <summary>The zaak UUID — the trailing path segment of the resource URL — used as the projection key.</summary>
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public string ZaakId => ResourceUrl.Segments[^1].Trim('/');
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/// <summary>
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/// A deterministic dedup key. Open Notificaties carries no notification id and may
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/// redeliver, so the key is derived from the immutable notification content: two
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/// deliveries of the same zaak-create collapse to one. (NRC may also deliver
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/// out of order; the projector tolerates that — order does not change the outcome.)
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/// </summary>
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public string IdempotencyKey => $"{Kanaal}:{Resource}:{Actie}:{ResourceUrl}";
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}
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