[Offline pages] Empty RequestQueue and SavePageRequest

components/offline_pages/background/save_page_request.h

+// Copyright 2016 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 COMPONENTS_OFFLINE_PAGES_BACKGROUND_SAVE_PAGE_REQUEST_H_
+#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_SAVE_PAGE_REQUEST_H_
+
+#include <stdint.h>
+
+#include "base/time/time.h"
+#include "components/offline_pages/offline_page_item.h"
+#include "url/gurl.h"
+
+namespace offline_pages {
+
+// Class representing a request to save page.
+class SavePageRequest {
+ public:
+  enum class Status {
+    kNotReady,  // Component requested a page be saved, but not until
+                // |activation_time_|.
+    kPending,   // Page request is pending, and coordinator can attempt it
+                // when it gets a chance to.
+    kStarted,   // The request is currently being processed.
+    kFailed,    // Page request failed many times and will no longer be
+                // retried.
+    kExpired,   // Save page request expired without being fulfilled.
+  };
+
+  SavePageRequest(int64_t request_id,
+                  const GURL& url,
+                  const ClientId& client_id,
+                  const base::Time& creation_time);
+  SavePageRequest(int64_t request_id,
+                  const GURL& url,
+                  const ClientId& client_id,
+                  const base::Time& creation_time,
+                  const base::Time& activation_time);
+  ~SavePageRequest();
+
+  // Status of this request.
+  Status GetStatus(const base::Time& now) const;
+
+  // Updates the |last_attempt_time_| and increments |attempt_count_|.
+  void MarkAttemptStarted(const base::Time& start_time);
+
+  // Marks attempt as completed and clears |last_attempt_time_|.
+  void MarkAttemptCompleted();
+
+  int64_t request_id() const { return request_id_; }
+
+  const GURL& url() const { return url_; }
+
+  const ClientId& client_id() const { return client_id_; }
+
+  const base::Time& creation_time() const { return creation_time_; }
+
+  const base::Time& activation_time() const { return activation_time_; }
+
+  int64_t attempt_count() const { return attempt_count_; }
+
+  const base::Time& last_attempt_time() const { return last_attempt_time_; }
+
+ private:
+  // ID of this request.
+  int64_t request_id_;
+
+  // Online URL of a page to be offlined.
+  GURL url_;
+
+  // Client ID related to the request. Contains namespace and ID assigned by the
+  // requester.
+  ClientId client_id_;
+
+  // Time when this request was created. (Alternative 2).
+  base::Time creation_time_;
+
+  // Time when this request will become active.
+  base::Time activation_time_;
+
+  // Number of attempts made to get the page.
+  int attempt_count_;
+
+  // Timestamp of the last request starting.
+  base::Time last_attempt_time_;
+};
+
+}  // namespace offline_pages
+
+#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_SAVE_PAGE_REQUEST_H_