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Mesh single-file helpers: delete the second reader, the older catalog layout and the lock-free replace

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Deletes CultMesh's ReadSingleFileSnapshot, HasOlderCatalogLayout, ReadLegacySchemaCatalogEntry,
WriteFileAtomically and the File.Exists gate, ReadStore's entry-reader delegate, and the three tests
of the older catalog layout. This commit does not build: the Mesh read and write sites still name
the deleted reader; the next commit routes them through the CultCache single-file store.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
Meta Vens 2026-10-03 01:59:13 +02:00
commit 2e12e9eebb
4 changed files with 4 additions and 193 deletions
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10
src/GameCult.Caching.MessagePack/CultDocumentMessagePackSerialization.cs
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@ -185,13 +185,7 @@ public static class CultDocumentMessagePackSerialization
/// <see cref="CultStoreUnreadableException"/>, so a reader never takes part of a file for the whole and never skips a slot
/// it does not understand. The rewriting paths use this same reader as their verdict on whether a file may be replaced.
/// </summary>
public static CultPersistedStoreSnapshot DeserializeSnapshot(byte[] payload) => ReadStore(payload, ReadSchemaCatalogEntry);
internal delegate CultSchemaCatalogEntry CatalogEntryReader(ref MessagePackReader reader);
// The one store reader. A caller with an older catalog layout supplies its own entry reader; the framing, the slot count
// and the records are judged here, once.
internal static CultPersistedStoreSnapshot ReadStore(byte[] payload, CatalogEntryReader readCatalogEntry)
public static CultPersistedStoreSnapshot DeserializeSnapshot(byte[] payload)
{
try
{
@ -215,7 +209,7 @@ public static class CultDocumentMessagePackSerialization
snapshot.SchemaCatalog = new CultSchemaCatalogEntry[catalogCount];
for (var index = 0; index < catalogCount; index++)
{
snapshot.SchemaCatalog[index] = readCatalogEntry(ref reader);
snapshot.SchemaCatalog[index] = ReadSchemaCatalogEntry(ref reader);
}
var recordCount = reader.ReadArrayHeader();