Support getting and deleting token for Instance ID.

components/gcm_driver/registration_info.h

Index: components/gcm_driver/registration_info.h
diff --git a/components/gcm_driver/registration_info.h b/components/gcm_driver/registration_info.h
new file mode 100644
index 0000000000000000000000000000000000000000..346eca36d9624c13b697ce61c149d7c95b560a32
--- /dev/null
+++ b/components/gcm_driver/registration_info.h
@@ -0,0 +1,130 @@
+// 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 COMPONENTS_GCM_DRIVER_REGISTRATION_INFO_H_
+#define COMPONENTS_GCM_DRIVER_REGISTRATION_INFO_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/linked_ptr.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace gcm  {
+
+// Encapsulates the information needed to register with the server.
+struct RegistrationInfo {
+  enum RegistrationType {
+    GCM_REGISTRATION,
+    INSTANCE_ID_TOKEN
+  };
+
+  // Returns the appropriate RegistrationInfo instance based on the serialized
+  // key and value.
+  // |registration_id| can be NULL if no interest to it.
+  static scoped_ptr<RegistrationInfo> BuildFromString(
+      const std::string& serialzied_key,
+      const std::string& serialzied_value,
+      std::string* registration_id);
+
+  RegistrationInfo();
+  virtual ~RegistrationInfo();
+
+  // Returns the type of the registration info.
+  virtual RegistrationType GetType() const = 0;
+
+  // For persisting to the store. Depending on the type, part of the
+  // registration info is written as key. The remaining of the registration
+  // info plus the registration ID are written as value.
+  virtual std::string GetSerializedKey() const = 0;
+  virtual std::string GetSerializedValue(
+      const std::string& registration_id) const = 0;
+  // |registration_id| can be NULL if it is of no interest to the caller.
+  virtual bool Deserialize(const std::string& serialzied_key,
+                           const std::string& serialzied_value,
+                           std::string* registration_id) = 0;
+
+  // Every registration is associated with an application.
+  std::string app_id;
+};
+
+// For GCM registration.
+struct GCMRegistrationInfo : public RegistrationInfo {
+  GCMRegistrationInfo();
+  ~GCMRegistrationInfo() override;
+
+  // Converts from the base type;
+  static const GCMRegistrationInfo* FromRegistrationInfo(
+      const RegistrationInfo* registration_info);
+  static GCMRegistrationInfo* FromRegistrationInfo(
+      RegistrationInfo* registration_info);
+
+  // RegistrationInfo overrides:
+  RegistrationType GetType() const override;
+  std::string GetSerializedKey() const override;
+  std::string GetSerializedValue(
+      const std::string& registration_id) const override;
+  bool Deserialize(const std::string& serialzied_key,
+                   const std::string& serialzied_value,
+                   std::string* registration_id) override;
+
+  // List of IDs of the servers that are allowed to send the messages to the
+  // application. These IDs are assigned by the Google API Console.
+  std::vector<std::string> sender_ids;
+};
+
+// For InstanceID token retrieval.
+struct InstanceIDTokenInfo : public RegistrationInfo {
+  InstanceIDTokenInfo();
+  ~InstanceIDTokenInfo() override;
+
+  // Converts from the base type;
+  static const InstanceIDTokenInfo* FromRegistrationInfo(
+      const RegistrationInfo* registration_info);
+  static InstanceIDTokenInfo* FromRegistrationInfo(
+      RegistrationInfo* registration_info);
+
+  // RegistrationInfo overrides:
+  RegistrationType GetType() const override;
+  std::string GetSerializedKey() const override;
+  std::string GetSerializedValue(
+      const std::string& registration_id) const override;
+  bool Deserialize(const std::string& serialzied_key,
+                   const std::string& serialzied_value,
+                   std::string* registration_id) override;
+
+  // Entity that is authorized to access resources associated with the Instance
+  // ID. It can be another Instance ID or a project ID assigned by the Google
+  // API Console.
+  std::string authorized_entity;
+
+  // Authorized actions that the authorized entity can take.
+  // E.g. for sending GCM messages, 'GCM' scope should be used.
+  std::string scope;
+
+  // Allows including a small number of string key/value pairs that will be
+  // associated with the token and may be used in processing the request.
+  std::map<std::string, std::string> options;
+};
+
+struct RegistrationInfoComparer {
+  bool operator()(const linked_ptr<RegistrationInfo>& a,
+                  const linked_ptr<RegistrationInfo>& b) const;
+};
+
+// Collection of registration info.
+// Map from RegistrationInfo instance to registration ID.
+typedef std::map<linked_ptr<RegistrationInfo>,
+                std::string,
+                RegistrationInfoComparer> RegistrationInfoMap;
+
+// Returns true if a GCM registration for |app_id| exists in |map|.
+bool ExistsGCMRegistrationInMap(const RegistrationInfoMap& map,
+                                const std::string& app_id);
+
+}  // namespace gcm
+
+#endif  // COMPONENTS_GCM_DRIVER_REGISTRATION_INFO_H_