Kenneth Skovhede
c1bdaa069e
Rewrote all operation handlers to be async. This moves the async/sync threshold out into the controller. Fixed all the uses of cancellation token in the handlers to use the provided cancellation token. Introduced a new ReusableTransaction that can be passed around, avoiding a ref parameter passing of the transaction instance.
71 lines
2.0 KiB
C#
71 lines
2.0 KiB
C#
using System;
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using System.Data;
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#nullable enable
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namespace Duplicati.Library.Main.Database;
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/// <summary>
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/// Wraps a transaction so it can be comitted and restarted
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/// </summary>
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internal class ReusableTransaction : IDisposable
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{
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/// <summary>
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/// The tag used for logging
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/// </summary>
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private static readonly string LOGTAG = Logging.Log.LogTagFromType(typeof(LocalDatabase));
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/// <summary>
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/// The database to use
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/// </summary>
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private readonly LocalDatabase m_db;
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/// <summary>
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/// The current transaction
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/// </summary>
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private IDbTransaction? m_transaction;
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/// <summary>
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/// Creates a new reusable transaction
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/// </summary>
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/// <param name="db">The database to use</param>
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public ReusableTransaction(LocalDatabase db, IDbTransaction? transaction = null)
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{
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m_db = db;
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m_transaction = transaction ?? db.BeginTransaction();
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}
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/// <summary>
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/// The current transaction
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/// </summary>
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public IDbTransaction Transaction => m_transaction ?? throw new InvalidOperationException("Transaction is disposed");
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/// <summary>
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/// Commits the current transaction and optionally restarts it
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/// </summary>
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/// <param name="message">The log message to use</param>
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/// <param name="restart">True if the transaction should be restarted</param>
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public void Commit(string? message = null, bool restart = true)
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{
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if (m_transaction == null)
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throw new InvalidOperationException("Transaction is already disposed");
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if (m_transaction != null)
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{
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using (var timer = string.IsNullOrWhiteSpace(message) ? null : new Logging.Timer(LOGTAG, message, "CommitTransaction"))
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m_transaction.Commit();
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m_transaction.Dispose();
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m_transaction = null;
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}
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if (restart)
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m_transaction = m_db.BeginTransaction();
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}
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/// <inheritdoc/>
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public void Dispose()
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{
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m_transaction?.Dispose();
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m_transaction = null;
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}
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}
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