Joseph Doherty
31 lines
1.4 KiB
C#
31 lines
1.4 KiB
C#
using Microsoft.Extensions.Logging;
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using ZB.MOM.WW.LocalDb.Internal;
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namespace ZB.MOM.WW.LocalDb.Replication.Internal;
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/// <summary>
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/// Shared construction of a <see cref="SyncSession"/> and its dependencies (OplogStore + LwwApplier)
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/// from a <see cref="SqliteLocalDb"/> and the bound options. Both the service and client adapters use
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/// this so they build an identical session; snapshot hooks are left null (Task 12 fills them in).
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/// </summary>
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internal static class SyncSessionFactory
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{
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/// <summary>
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/// The engine binds to <see cref="SqliteLocalDb"/> internals (NodeId, Clock, replicated-table
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/// digests), so both adapters require the concrete type AddZbLocalDb registers behind ILocalDb.
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/// </summary>
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public static SqliteLocalDb RequireSqlite(ILocalDb db, string consumer) =>
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db as SqliteLocalDb
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?? throw new InvalidOperationException(
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$"{consumer} requires the ILocalDb registered by AddZbLocalDb (a {nameof(SqliteLocalDb)}); " +
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$"got {db.GetType().FullName}.");
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public static SyncSession Create(SqliteLocalDb db, ReplicationOptions options, ILoggerFactory loggerFactory)
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{
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var store = new OplogStore(db, options);
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var applier = new LwwApplier(db);
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var logger = loggerFactory.CreateLogger<SyncSession>();
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return new SyncSession(db, store, applier, options, logger);
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}
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}
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