/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="next"></param>
/// <returns></returns>
public async Task OnResourceExecutionAsync(ResourceExecutingContext context, ResourceExecutionDelegate next)
{
var settings = new HttpCacheSettings()
{
Expiry = ConfiguredExpiry
};
if (_options.EnableConfiguration)
{
settings = GetConfigSettings(context, settings);
}
if (!settings.Enabled)
{
await next();
return;
}
var pipa = new CachingPipeline(_validator, CacheDirectiveProvider, _options)
{
ApplyNoCacheNoStoreForNonCacheableResponse = ApplyNoCacheNoStoreForNonCacheableResponse,
ConfiguredExpiry = settings.Expiry
};
var carryon = await pipa.Before(context.HttpContext);
if (!carryon) // short-circuit
{
return;
}
var execCtx = await next(); // _______________________________________________________________________________
var or = execCtx.Result as ObjectResult;
await pipa.After(context.HttpContext, or == null || or.Value == null?null : or.Value);
}
private HttpCacheSettings GetConfigSettings(ResourceExecutingContext context, HttpCacheSettings settings)
{
const string ControllerKey = "controller";
const string ActionKey = "action";
if (!context.RouteData.Values.ContainsKey(ControllerKey) ||
!context.RouteData.Values.ContainsKey(ActionKey))
{
return(settings);
}
var key = $"CacheCow:{context.RouteData.Values[ControllerKey]}:{context.RouteData.Values[ActionKey]}";
var section = _config.GetSection(key);
if (section.Exists())
{
section.Bind(settings);
}
return(settings);
}
