public ImageflowMiddleware(
RequestDelegate next,
IWebHostEnvironment env,
IEnumerable <ILogger <ImageflowMiddleware> > logger,
IEnumerable <IClassicDiskCache> diskCaches,
IEnumerable <IStreamCache> streamCaches,
IEnumerable <IBlobProvider> blobProviders,
ImageflowMiddlewareOptions options)
{
this.next = next;
options.Licensing ??= new Licensing(LicenseManagerSingleton.GetOrCreateSingleton(
"imageflow_", new[] { env.ContentRootPath, Path.GetTempPath() }));
this.options = options;
this.env = env;
this.logger = logger.FirstOrDefault();
diskCache = diskCaches.FirstOrDefault();
var streamCacheArray = streamCaches.ToArray();
if (streamCacheArray.Count() > 1)
{
throw new InvalidOperationException("Only 1 IStreamCache instance can be registered at a time");
}
streamCache = streamCacheArray.FirstOrDefault();
var providers = blobProviders.ToList();
var mappedPaths = options.MappedPaths.ToList();
if (options.MapWebRoot)
{
if (this.env?.WebRootPath == null)
{
throw new InvalidOperationException("Cannot call MapWebRoot if env.WebRootPath is null");
}
mappedPaths.Add(new PathMapping("/", this.env.WebRootPath));
}
//Determine the active cache backend
var streamCacheEnabled = streamCache != null && options.AllowCaching;
var diskCacheEnabled = this.diskCache != null && options.AllowDiskCaching;
if (streamCacheEnabled)
{
options.ActiveCacheBackend = CacheBackend.StreamCache;
}
else if (diskCacheEnabled)
{
options.ActiveCacheBackend = CacheBackend.ClassicDiskCache;
}
else
{
options.ActiveCacheBackend = CacheBackend.NoCache;
}
options.Licensing.Initialize(this.options);
blobProvider = new BlobProvider(providers, mappedPaths);
diagnosticsPage = new DiagnosticsPage(options, env, this.logger, streamCache, this.diskCache, providers);
licensePage = new LicensePage(options);
globalInfoProvider = new GlobalInfoProvider(options, env, this.logger, streamCache, this.diskCache, providers);
options.Licensing.FireHeartbeat();
GlobalPerf.Singleton.SetInfoProviders(new List <IInfoProvider>()
{
globalInfoProvider
});
}