Index: mojo/shell/application_manager/fetcher.h |
diff --git a/mojo/shell/application_manager/fetcher.h b/mojo/shell/application_manager/fetcher.h |
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+// Copyright 2015 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef SHELL_APPLICATION_MANAGER_FETCHER_H_ |
+#define SHELL_APPLICATION_MANAGER_FETCHER_H_ |
+ |
+#include "base/callback.h" |
+#include "base/memory/scoped_ptr.h" |
+ |
+#include "mojo/services/network/public/interfaces/url_loader.mojom.h" |
+ |
+class GURL; |
+ |
+namespace base { |
+class FilePath; |
+class TaskRunner; |
+} |
+ |
+namespace mojo { |
+namespace shell { |
+ |
+// Fetcher abstracts getting an application by either file or http[s] URL. |
+// |
+// Although it is possible to use the Network implementation for http[s] URLs |
+// (because the underlying net library knows how to handle them), it is |
+// extremely slow because network responses must be copied to disk in order to |
+// get a file handle we can use with dlopen. |
+// |
+// Until this is solved, we use two different implementations so that |
+// performance isn't completely absymal. |
+class Fetcher { |
+ public: |
+ // The param will be null in the case where the content could not be fetched. |
+ // Reasons include: |
+ // - network error |
+ // - 4x or 5x HTTP errors |
+ typedef base::Callback<void(scoped_ptr<Fetcher>)> FetchCallback; |
+ |
+ Fetcher(const FetchCallback& fetch_callback); |
+ virtual ~Fetcher(); |
+ |
+ // Returns the original URL that was fetched. |
+ virtual const GURL& GetURL() const = 0; |
+ |
+ // If the fetch resulted in a redirect, this returns the final URL after all |
+ // redirects. Otherwise, it returns an empty URL. |
+ virtual GURL GetRedirectURL() const = 0; |
+ |
+ virtual URLResponsePtr AsURLResponse(base::TaskRunner* task_runner, |
+ uint32_t skip) = 0; |
+ |
+ virtual void AsPath( |
+ base::TaskRunner* task_runner, |
+ base::Callback<void(const base::FilePath&, bool)> callback) = 0; |
+ |
+ virtual std::string MimeType() = 0; |
+ |
+ virtual bool HasMojoMagic() = 0; |
+ |
+ virtual bool PeekFirstLine(std::string* line) = 0; |
+ |
+ bool PeekContentHandler(std::string* mojo_shebang, |
+ GURL* mojo_content_handler_url); |
+ |
+ protected: |
+ static const char kMojoMagic[]; |
+ static const size_t kMaxShebangLength; |
+ |
+ FetchCallback loader_callback_; |
+}; |
+ |
+} // namespace shell |
+} // namespace mojo |
+ |
+#endif // SHELL_APPLICATION_MANAGER_FETCHER_H_ |