/// <summary>
/// Initializes a new instance of the <see cref="T:EasyCaching.HybridCache.HybridCachingProvider"/> class.
/// </summary>
/// <param name="optionsAccs">Options accs.</param>
/// <param name="factory">Providers factory</param>
/// <param name="bus">Bus.</param>
/// <param name="loggerFactory">Logger factory.</param>
public HybridCachingProvider(
IOptions <HybridCachingOptions> optionsAccs
, IEasyCachingProviderFactory factory
, IEasyCachingBus bus = null
, ILoggerFactory loggerFactory = null
)
{
ArgumentCheck.NotNull(factory, nameof(factory));
this._options = optionsAccs.Value;
ArgumentCheck.NotNullOrWhiteSpace(_options.TopicName, nameof(_options.TopicName));
this._logger = loggerFactory?.CreateLogger <HybridCachingProvider>();
// Here use the order to distinguish traditional provider
var local = factory.GetCachingProvider(_options.LocalCacheProviderName);
if (local.IsDistributedCache)
{
throw new NotFoundCachingProviderException("Can not found any local caching providers.");
}
else
{
this._localCache = local;
}
// Here use the order to distinguish traditional provider
var distributed = factory.GetCachingProvider(_options.DistributedCacheProviderName);
if (!distributed.IsDistributedCache)
{
throw new NotFoundCachingProviderException("Can not found any distributed caching providers.");
}
else
{
this._distributedCache = distributed;
}
this._bus = bus ?? NullEasyCachingBus.Instance;
this._bus.Subscribe(_options.TopicName, OnMessage);
this._cacheId = Guid.NewGuid().ToString("N");
// policy
retryAsyncPolicy = Policy.Handle <Exception>()
.WaitAndRetryAsync(this._options.BusRetryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt - 1)));
retryPolicy = Policy.Handle <Exception>()
.WaitAndRetry(this._options.BusRetryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt - 1)));
fallbackPolicy = Policy.Handle <Exception>().Fallback(() => { });
fallbackAsyncPolicy = Policy.Handle <Exception>().FallbackAsync(ct =>
{
return(Task.CompletedTask);
});
_busSyncWrap = Policy.Wrap(fallbackPolicy, retryPolicy);
_busAsyncWrap = Policy.WrapAsync(fallbackAsyncPolicy, retryAsyncPolicy);
}
public void NotNull_Should_Not_Throw_ArgumentNullException_When_Argument_Is_Not_Null(object obj)
{
var ex = Record.Exception(() => ArgumentCheck.NotNull(obj, "name"));
Assert.Null(ex);
}
public void NotNull_Should_Throw_ArgumentNullException_When_Argument_Is_Null()
{
Assert.Throws <ArgumentNullException>(() => ArgumentCheck.NotNull(null, "name"));
}
/// <summary>
/// Uses the easy caching response caching.
/// </summary>
/// <returns>The easy caching response caching.</returns>
/// <param name="app">App.</param>
public static IApplicationBuilder UseEasyCachingResponseCaching(this IApplicationBuilder app)
{
ArgumentCheck.NotNull(app, nameof(app));
return(app.UseMiddleware <EasyCachingResponseCachingMiddleware>());
}
