Index: google_apis/gcm/engine/user_list.h |
diff --git a/google_apis/gcm/engine/user_list.h b/google_apis/gcm/engine/user_list.h |
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+// Copyright 2014 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 GOOGLE_APIS_GCM_ENGINE_USER_LIST_H_ |
+#define GOOGLE_APIS_GCM_ENGINE_USER_LIST_H_ |
+ |
+#include <map> |
+#include <string> |
+ |
+#include "base/callback.h" |
+#include "google_apis/gcm/engine/gcm_store.h" |
+#include "google_apis/gcm/gcm_client.h" |
+ |
+namespace gcm { |
+ |
+GCM_EXPORT extern const int64 kInvalidSerialNumber; |
+ |
+// UserList stores mappings between usernames, serial numbers and delegates to |
+// enable dispatching messages to applications. |
+class GCM_EXPORT UserList { |
+ public: |
+ // A callback used by SetDelegate method to return a |user_serial_number| |
+ // assigned to the delegate identified by |username|. |
+ typedef base::Callback<void(const std::string& username, |
+ int64 user_serial_number)> SetDelegateCallback; |
+ |
+ explicit UserList(GCMStore* gcm_store); |
+ ~UserList(); |
+ |
+ // Initializes the User List with a set of mappings and next serial number. |
+ void Initialize(const GCMStore::SerialNumberMappings& result); |
+ |
+ // Sets a user delegate for |username|. It will create a new entry for the |
+ // user if one does not exist. |
+ void SetDelegate(const std::string& username, |
+ GCMClient::Delegate* delegate, |
+ const SetDelegateCallback& callback); |
+ |
+ // Returns a delegate for the user identified by |serial_number| or NULL, if |
+ // a matching delegate was not found. |
+ GCMClient::Delegate* GetDelegateBySerialNumber(int64 serial_number) const; |
+ |
+ // Returns a delegate for the user identified by |username| or NULL, if a |
+ // matching delegate was not found. |
+ GCMClient::Delegate* GetDelegateByUsername(const std::string& username) const; |
+ |
+ // Gets the serial number assigned to a specified |username|, if one is |
+ // assigned, the value will be positive. If there is no matching delegate or |
+ // it is not yet assigned a serial number, the result will be equal to |
+ // kInvalidSerialNumber. |
+ int64 GetSerialNumberForUsername(const std::string& username) const; |
+ |
+ private: |
+ friend class UserListTest; |
+ |
+ struct UserInfo { |
+ UserInfo(); |
+ explicit UserInfo(int64 serial_number); |
+ UserInfo(GCMClient::Delegate* delegate, |
+ const SetDelegateCallback& callback); |
+ ~UserInfo(); |
+ |
+ int64 serial_number; |
+ // Delegate related to the username. Not owned by the UserDelegate. |
+ GCMClient::Delegate* delegate; |
+ SetDelegateCallback callback; |
+ }; |
+ typedef std::map<std::string, UserInfo> UserInfoMap; |
+ |
+ // Assigns a serial number to the user identitified by |username|. |
+ void AssignSerialNumber(const std::string& username); |
+ |
+ // A callback invoked once the Backend is done updating the next serial |
+ // number. |
+ void IncrementSerialNumberCompleted(const std::string& username, |
+ int64 user_serial_number, |
+ bool success); |
+ |
+ // Callback for serial number completion. |
+ void AssignSerialNumberCompleted(const std::string& username, bool success); |
+ |
+ // Concludes the process of setting a delegate by running a callback with |
+ // |username| and |serial_number| assigned to that |username|. It will also |
+ // reset the callback, so that it is not called again. |
+ void OnSerialNumberReady(const UserInfoMap::iterator& iter); |
+ |
+ // Sets the serial number related to the username. It expects the entry to not |
+ // exist yet and will create it. |
+ void SetSerialNumber(const std::string& username, int64 serial_number); |
+ |
+ bool initialized_; |
+ int64 next_serial_number_; |
+ UserInfoMap delegates_; |
+ GCMStore* gcm_store_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(UserList); |
+}; |
+ |
+} // namespace gcm |
+ |
+#endif // GOOGLE_APIS_GCM_ENGINE_USER_LIST_H_ |