Audit Log Generator

GenerateAuditLogAttribute creates a typed InMemoryAuditLog<TEntry,TKey> factory from a key selector method.

[GenerateAuditLog(typeof(OrderAuditEntry), typeof(string), FactoryName = "CreateLog", LogName = "order-audit")]
public static partial class GeneratedOrderAuditLog
{
    [AuditLogKeySelector]
    private static string SelectKey(OrderAuditEntry entry) => entry.EntryId;
}

The generated factory is equivalent to:

InMemoryAuditLog<OrderAuditEntry, string>
    .Create("order-audit", SelectKey)
    .Build();

Diagnostics:

• PKAUD001: host type must be partial.
• PKAUD002: exactly one [AuditLogKeySelector] method is required.
• PKAUD003: key selector must be static and return TKey from one TEntry parameter.