Send the list of used and unused resources for precache

components/precache/core/precache_url_table.h

 // Copyright 2013 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_PRECACHE_CORE_PRECACHE_URL_TABLE_H_
 #define COMPONENTS_PRECACHE_CORE_PRECACHE_URL_TABLE_H_
 
+#include <stdint.h>
+
 #include <map>
+#include <vector>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "url/gurl.h"
 
 namespace sql {
 class Connection;
 }
 
 namespace precache {
 
 // Interface for database table that keeps track of the URLs that have been
 // precached but not used. This table is used to count how many bytes were saved
 // by precached resources.
 // Each row in this table represents a URL that was precached over the network,
 // and has not been fetched through user browsing since then.
 // Manages one table { URL (primary key), precache timestamp }.
 class PrecacheURLTable {
  public:
   PrecacheURLTable();
   ~PrecacheURLTable();
 
   // Initialize the precache URL table for use with the specified database
   // connection. The caller keeps ownership of |db|, and |db| must not be NULL.
   // Init must be called before any other methods.
   bool Init(sql::Connection* db);
 
-  // Adds a precached URL to the table, using the current time as the
-  // precache timestamp. Replaces the row if one already exists.
-  void AddURL(const GURL& url, const base::Time& precache_time);
+  // Adds an URL to the table, |referrer_host_id| is the id of the referrer host
+  // in PrecacheReferrerHostTable, |is_precached| indicates if the URL is
+  // precached, |time| is the timestamp. Replaces the row if one already exists.
+  void AddURL(const GURL& url,
+              int64_t referrer_host_id,
+              bool is_precached,
+              const base::Time& precache_time);
 
-  // Returns true if this URL exists in the table.
-  bool HasURL(const GURL& url);
+  // Returns true if the url is precached.
+  bool IsURLPrecached(const GURL& url);
 
-  // Deletes the row from the table that has the given URL, if it exists.
-  void DeleteURL(const GURL& url);
+  // Returns true if the url is precached, and was not used before.
+  bool IsURLPrecachedAndUnused(const GURL& url);
+
+  // Sets the precached URL as used.
+  void SetPrecachedURLAsUsed(const GURL& url);
+
+  // Set the previously precached URL as not precached, during user browsing.
+  void SetURLAsNotPrecached(const GURL& url);
+
+  // Populates the used and unused resource URLs for the referrer host with id
+  // |referrer_host_id|.
+  void GetURLListForReferrerHost(int64_t referrer_host_id,
+                                 std::vector<GURL>* used_urls,
+                                 std::vector<GURL>* unused_urls);
 
   // Deletes entries that were precached before the time of |delete_end|.
   void DeleteAllPrecachedBefore(const base::Time& delete_end);
 
+  // Deletes entries for the referrer host |referrer_host_id|.
+  void DeleteAllForReferrerHost(int64_t referrer_host_id);
+
   // Delete all entries.
   void DeleteAll();
 
   // Used by tests to get the contents of the table.
   void GetAllDataForTesting(std::map<GURL, base::Time>* map);
 
  private:
   bool CreateTableIfNonExistent();
 
   // Non-owned pointer.
   sql::Connection* db_;
 
   DISALLOW_COPY_AND_ASSIGN(PrecacheURLTable);
 };
 
 }  // namespace precache
 
 #endif  // COMPONENTS_PRECACHE_CORE_PRECACHE_URL_TABLE_H_