ce07277c0b
CacheBackingStore.Refuse reloads the refused and moved keys through Loaded and only then unstages them, or changes nothing; RefuseForeign calls it. A write into a store that holds or would hold a variant lands only while the durable record headers equal what this store last read (_lastRead), else CultWriteConflictException. SameStoredIdentity is the one identity predicate. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
27 lines
1.4 KiB
C#
27 lines
1.4 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
|
|
namespace GameCult.Caching
|
|
{
|
|
/// <summary>
|
|
/// A write refused because the store it would land in holds a variant and has changed since its writer last read it. A variant
|
|
/// resolves against other records, and a write never decodes a record it did not stage, so it cannot judge records another
|
|
/// writer changed: it writes only while every record header in the store equals what the writer last read or wrote. Nothing is
|
|
/// written. <see cref="RecordKeys"/> are the keys the write would have written or removed and <see cref="ChangedKeys"/> the keys
|
|
/// whose durable header differs from what the writer last read, both ordinal-sorted. The cache has reloaded all of them as the
|
|
/// store holds them and forgotten the staged changes at those keys, so a retry is judged against that. When reloading failed,
|
|
/// nothing changed and <see cref="Exception.InnerException"/> is the cause.
|
|
/// </summary>
|
|
public sealed class CultWriteConflictException : InvalidOperationException
|
|
{
|
|
public CultWriteConflictException(string message, IReadOnlyList<string> recordKeys, IReadOnlyList<string> changedKeys, Exception? inner = null)
|
|
: base(message, inner)
|
|
{
|
|
RecordKeys = recordKeys;
|
|
ChangedKeys = changedKeys;
|
|
}
|
|
|
|
public IReadOnlyList<string> RecordKeys { get; }
|
|
public IReadOnlyList<string> ChangedKeys { get; }
|
|
}
|
|
}
|