/
ExactlyOnceStrategyBuilder.cs
50 lines (42 loc) · 1.6 KB
/
ExactlyOnceStrategyBuilder.cs
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// Copyright (c) 2020 Sergio Aquilini
// This code is licensed under MIT license (see LICENSE file for details)
using System;
using Silverback.Messaging.Inbound.ExactlyOnce;
namespace Silverback.Messaging.Configuration
{
/// <summary>
/// Builds the <see cref="IExactlyOnceStrategy" />.
/// </summary>
public class ExactlyOnceStrategyBuilder : IExactlyOnceStrategyBuilder
{
private IExactlyOnceStrategy? _strategy;
/// <inheritdoc cref="IExactlyOnceStrategyBuilder.StoreOffsets"/>>
public IExactlyOnceStrategyBuilder StoreOffsets()
{
if (_strategy != null)
throw new InvalidOperationException("Cannot use multiple IExactlyOnceStrategy.");
_strategy = new OffsetStoreExactlyOnceStrategy();
return this;
}
/// <inheritdoc cref="IExactlyOnceStrategyBuilder.LogMessages"/>>
public IExactlyOnceStrategyBuilder LogMessages()
{
if (_strategy != null)
throw new InvalidOperationException("Cannot use multiple IExactlyOnceStrategy.");
_strategy = new LogExactlyOnceStrategy();
return this;
}
/// <summary>
/// Builds the <see cref="IExactlyOnceStrategy" /> instance.
/// </summary>
/// <returns>
/// The <see cref="IExactlyOnceStrategy" />.
/// </returns>
public IExactlyOnceStrategy Build()
{
if (_strategy == null)
throw new InvalidOperationException("No strategy was specified.");
return _strategy;
}
}
}