public void SetCachePolicyProvider_Roundtrips()
{
// Arrange
CachePolicyProvider provider = new CachePolicyProvider();
HttpConfiguration config = new HttpConfiguration();
// Act
config.SetCachePolicyProvider(provider);
ICachePolicyProvider actual = config.GetCachePolicyProvider();
// Assert
Assert.Same(provider, actual);
}
/// <summary>
/// Gets the <see cref="Microsoft.Azure.Mobile.Server.Cache.ICachePolicyProvider"/> registered with the current <see cref="System.Web.Http.HttpConfiguration" />.
/// </summary>
/// <param name="config">The current <see cref="System.Web.Http.HttpConfiguration"/>.</param>
/// <returns>The registered instance.</returns>
public static ICachePolicyProvider GetCachePolicyProvider(this HttpConfiguration config)
{
if (config == null)
{
throw new ArgumentNullException("config");
}
ICachePolicyProvider provider = null;
if (!config.Properties.TryGetValue(CachePolicyProviderKey, out provider))
{
provider = new CachePolicyProvider();
config.Properties[CachePolicyProviderKey] = provider;
}
return(provider);
}
/// <summary>
/// 获取缓存策略
/// </summary>
/// <param name="context">MVC 请求上下文</param>
/// <param name="action">Action 信息</param>
/// <param name="parameters">Action 参数</param>
/// <returns>缓存策略</returns>
protected override CachePolicy CreateCachePolicy(ControllerContext context, ActionDescriptor action, IDictionary <string, object> parameters)
{
if (CachePolicyProvider != null)
{
return(CachePolicyProvider.CreateCachePolicy(context, action, parameters));
}
var httpMethod = context.HttpContext.Request.HttpMethod;
if (!httpMethod.EqualsIgnoreCase("get") && !httpMethod.EqualsIgnoreCase("header"))//如果不是GET或Header请求，都不予缓存。
{
return(null);
}
var provider = context.Controller as IMvcCachePolicyProvider;
if (provider == null)
{
var _provider = context.Controller as ICachePolicyProvider;
if (_provider != null)
{
provider = new MvcCachePolicyProviderWrapper(_provider);
}
}
var policy = provider.CreateCachePolicy(context, action, parameters);
if (policy != null)
{
return(policy);
}
return(MvcEnvironment.CreateCachePolicy(context, action, parameters));
}
public CachePolicyProviderTests()
{
ServiceProviderMock = Substitute.For <IServiceProvider>();
Sut = new CachePolicyProvider(ServiceProviderMock);
}
