private bool IsExistsOnClient(WebResource resource)
{
var etag = Context.Request.Headers["If-None-Match"];
return !String.IsNullOrEmpty(etag) && String.Equals(resource.ETag, etag);
}
public WebResource GetResource(WebResourceDescriptor descriptor)
{
if (descriptor == null)
{
throw new ArgumentNullException("descriptor");
}
try
{
var key = descriptor.GenerateCacheKey(compressor.EncodingType);
syncRoot.EnterUpgradeableReadLock();
var resource = context.Cache[key] as WebResource;
if (resource == null)
{
var group = WebResources.Scripts[descriptor.Name];
if (group == null)
{
throw new WebResourceLocatorException();
}
if (!group.Combined)
{
throw new WebResourceLocatorException();
}
try
{
syncRoot.EnterWriteLock();
var path = Path.GetTempFileName();
using (var writer = new StreamWriter(compressor.CreateOutputStream(File.Create(path))))
{
foreach (var item in group.Items)
{
var provider = GetResourceProvider(item.Source, group.DefaultPath ?? WebResources.ScriptFilesPath);
trace.TraceInformation("Source: {0}", item.Source);
writer.WriteLine();
writer.WriteLine("/* Web Resource Locator: {0} */", DateTime.Now);
writer.WriteLine("/* {0} */", item.Source);
using (var reader = new StreamReader(provider.GetResourceStream(item.Source)))
{
int count;
var buffer = new char[4096];
while ((count = reader.Read(buffer, 0, buffer.Length)) > 0)
{
writer.Write(buffer, 0, count);
}
}
writer.WriteLine();
}
resource = new WebResource(path)
{
ContentType = "application/x-javascript",
Version = group.Version
};
}
context.Cache.Add(key,
resource,
new CacheDependency(path),
group.CacheDuration > TimeSpan.Zero
? DateTime.Now + group.CacheDuration
: Cache.NoAbsoluteExpiration,
Cache.NoSlidingExpiration,
CacheItemPriority.Normal,
null);
}
finally
{
syncRoot.ExitWriteLock();
}
}
return resource;
}
finally
{
syncRoot.ExitUpgradeableReadLock();
}
}