timothyandClaude Opus 4.8
94ebf34ccd
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Adds the shared optimistic-concurrency contract so a stale second tab can no longer silently overwrite a fresher edit. PR1 lands the infra + the Block reference aggregate; PRs 2–4 fan the same recipe across the other 8 roots (design: #253#issuecomment-8472). Contract - `IVersionedAggregate` (`int Version`) on all 9 replace-all roots (ProgramSchedule, Block, Template, DecoTemplate, Playlist, Collection, Playout, MultiCollection, RerunCollection), EF-mapped `.IsConcurrencyToken()`; one dual-provider migration `AddAggregateVersions` (nullable:false, default 0). - Strong `ETag` of `Version` on the aggregate GET; `If-Match` on the PUT; mismatch → 412 (distinct from the §3a 409 build-lock guard). Successful PUT returns the new ETag. - `PreconditionFailedError : BaseError` → 412 in `ApiResults.ToErrorResult`; `ConcurrencyHeaders.ParseIfMatch/SetETag`; malformed If-Match → 400; `*`/absent = Phase-1 force-write. Block reference wiring - Handler: standalone `Either` via `CheckVersion` AFTER validation (never through `Apply`, which Join()-flattens the subtype to 422), unconditional `Version++`, `SaveChangesWithConcurrencyGuard` backstop (DbUpdateConcurrencyException → 412). - `BlockViewModel.Version` (header-only, not echoed in the body); controller sets the ETag on GET items and on the successful PUT. - SPA: `client.requestWithMeta` seam; `blocks.getBlockItemsWithMeta` + `replaceBlock` If-Match/ETag round-trip; `BlockEditor` holds the ETag, sends If-Match, and on 412 opens a blocking "changed elsewhere — reload" dialog. Tests - Handler contract tests: stale-If-Match → 412 (no mutation), matching/absent → success + bump, no-op save still bumps, and a two-context racing save → 412; proven non-vacuous (drop `.IsConcurrencyToken()` → the race test fails). - Controller tests: malformed If-Match → 400, If-Match threaded to the command, ETag on GET/PUT, 412 passthrough. SPA: requestWithMeta ETag, replaceBlock If-Match, 412 dialog. Docs: api-conventions §7a, spa-conventions §4a, domain-model glossary, decisions log. Refs #253 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
13 lines
257 B
C#
13 lines
257 B
C#
using ErsatzTV.Core.Domain.Scheduling;
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namespace ErsatzTV.Application.Scheduling;
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public record BlockViewModel(
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int Id,
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int GroupId,
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string GroupName,
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string Name,
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int Minutes,
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BlockStopScheduling StopScheduling,
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int Version);
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