/// <summary>
/// caches response before it is sent to client if it is a CacheableResponse or if the NegotationContext has the nancy-rapidcache
/// header set.
/// </summary>
/// <param name="context"></param>
private static void SetCache(NancyContext context)
{
if (context.Response is CachedResponse)
{
return;
}
if (context.Request.Query is DynamicDictionary dict)
{
if (DisableCache.Enabled && dict.ContainsKey(DisableCache.Key))
{
return;
}
}
string key = _cacheKeyGenerator.Get(context.Request);
if (string.IsNullOrEmpty(key))
{
return;
}
if (context.Response.StatusCode != HttpStatusCode.OK)
{
_cacheStore.Remove(key);
return;
}
var currentCache = _cacheStore.Get(key);
var now = DateTime.UtcNow;
if (context.Response is CacheableResponse cacheableResponse)
{
if (currentCache == null || currentCache?.Expiration < now)
{
_cacheStore.Set(key, context, cacheableResponse.Expiration);
}
}
else if (context.NegotiationContext.Headers.ContainsKey(CacheHeader.ToLowerInvariant()))
{
var expiration = DateTime.Parse(context.NegotiationContext.Headers[CacheHeader],
CultureInfo.InvariantCulture);
context.NegotiationContext.Headers.Remove(CacheHeader);
if (currentCache == null || currentCache?.Expiration < now)
{
_cacheStore.Set(key, context, expiration);
}
}
}
