[GCM] Adding last token fetching time handling

google_apis/gcm/engine/gcm_store_impl.cc

 // 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.
 
 #include "google_apis/gcm/engine/gcm_store_impl.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_path.h"
@@ skipping 56 matching lines @@
 // Key used to indicate how many accounts were last checked in with this device.
 const char kLastCheckinAccountsKey[] = "last_checkin_accounts_count";
 // Key used to timestamp last checkin (marked with G services settings update).
 const char kLastCheckinTimeKey[] = "last_checkin_time";
 // Lowest lexicographically ordered account key.
 // Used for prefixing account information.
 const char kAccountKeyStart[] = "account1-";
 // Key guaranteed to be higher than all account keys.
 // Used for limiting iteration.
 const char kAccountKeyEnd[] = "account2-";
+// Key user to timestamp last token fetching time.
+const char kLastTokenFetchingTimeKey[] = "last_token_fetching_time";
 
 std::string MakeRegistrationKey(const std::string& app_id) {
   return kRegistrationKeyStart + app_id;
 }
 
 std::string ParseRegistrationKey(const std::string& key) {
   return key.substr(arraysize(kRegistrationKeyStart) - 1);
 }
 
 std::string MakeIncomingKey(const std::string& persistent_id) {
@@ skipping 72 matching lines @@
                           const std::set<std::string>& accounts,
                           const UpdateCallback& callback);
   void SetGServicesSettings(
       const std::map<std::string, std::string>& settings,
       const std::string& digest,
       const UpdateCallback& callback);
   void AddAccountMapping(const AccountMapping& account_mapping,
                          const UpdateCallback& callback);
   void RemoveAccountMapping(const std::string& account_id,
                             const UpdateCallback& callback);
+  void SetLastTokenFetchingTime(const base::Time& time,
+                                const UpdateCallback& callback);
 
  private:
   friend class base::RefCountedThreadSafe<Backend>;
   ~Backend();
 
   bool LoadDeviceCredentials(uint64* android_id, uint64* security_token);
   bool LoadRegistrations(RegistrationInfoMap* registrations);
   bool LoadIncomingMessages(std::vector<std::string>* incoming_messages);
   bool LoadOutgoingMessages(OutgoingMessageMap* outgoing_messages);
   bool LoadLastCheckinInfo(base::Time* last_checkin_time,
                            std::set<std::string>* accounts);
   bool LoadGServicesSettings(std::map<std::string, std::string>* settings,
                              std::string* digest);
   bool LoadAccountMappingInfo(AccountMappings* account_mappings);
+  bool LoadLastTokenFetchingTime(base::Time* last_token_fetching_time);
 
   const base::FilePath path_;
   scoped_refptr<base::SequencedTaskRunner> foreground_task_runner_;
   scoped_ptr<Encryptor> encryptor_;
 
   scoped_ptr<leveldb::DB> db_;
 };
 
 GCMStoreImpl::Backend::Backend(
     const base::FilePath& path,
@@ skipping 34 matching lines @@
 
   if (!LoadDeviceCredentials(&result->device_android_id,
                              &result->device_security_token) ||
       !LoadRegistrations(&result->registrations) ||
       !LoadIncomingMessages(&result->incoming_messages) ||
       !LoadOutgoingMessages(&result->outgoing_messages) ||
       !LoadLastCheckinInfo(&result->last_checkin_time,
                            &result->last_checkin_accounts) ||
       !LoadGServicesSettings(&result->gservices_settings,
                              &result->gservices_digest) ||
-      !LoadAccountMappingInfo(&result->account_mappings)) {
+      !LoadAccountMappingInfo(&result->account_mappings) ||
+      !LoadLastTokenFetchingTime(&result->last_token_fetching_time)) {
     result->Reset();
     foreground_task_runner_->PostTask(FROM_HERE,
                                       base::Bind(callback,
                                                  base::Passed(&result)));
     return;
   }
 
   // Only record histograms if GCM had already been set up for this device.
   if (result->device_android_id != 0 && result->device_security_token != 0) {
     int64 file_size = 0;
@@ skipping 363 matching lines @@
   write_options.sync = true;
 
   leveldb::Status s =
       db_->Delete(write_options, MakeSlice(MakeAccountKey(account_id)));
 
   if (!s.ok())
     LOG(ERROR) << "LevelDB removal of account mapping failed: " << s.ToString();
   foreground_task_runner_->PostTask(FROM_HERE, base::Bind(callback, s.ok()));
 }
 
+void GCMStoreImpl::Backend::SetLastTokenFetchingTime(
+    const base::Time& time,
+    const UpdateCallback& callback) {
+  DVLOG(1) << "Setting last token fetching time.";
+  if (!db_.get()) {
+    LOG(ERROR) << "GCMStore db doesn't exist.";
+    foreground_task_runner_->PostTask(FROM_HERE, base::Bind(callback, false));
+    return;
+  }
+
+  leveldb::WriteOptions write_options;
+  write_options.sync = true;
+
+  const leveldb::Status s = db_->Put(
+      write_options,
+      MakeSlice(kLastTokenFetchingTimeKey),
+      MakeSlice(base::Int64ToString(time.ToInternalValue())));
+
+  if (!s.ok())
+    LOG(ERROR) << "LevelDB setting last token fetching time: " << s.ToString();
+  foreground_task_runner_->PostTask(FROM_HERE, base::Bind(callback, s.ok()));
+}
+
 bool GCMStoreImpl::Backend::LoadDeviceCredentials(uint64* android_id,
                                                   uint64* security_token) {
   leveldb::ReadOptions read_options;
   read_options.verify_checksums = true;
 
   std::string result;
   leveldb::Status s = db_->Get(read_options, MakeSlice(kDeviceAIDKey), &result);
   if (s.ok()) {
     if (!base::StringToUint64(result, android_id)) {
       LOG(ERROR) << "Failed to restore device id.";
@@ skipping 176 matching lines @@
                << account_mapping.account_id;
       return false;
     }
     DVLOG(1) << "Found account mapping with ID: " << account_mapping.account_id;
     account_mappings->push_back(account_mapping);
   }
 
   return true;
 }
 
+bool GCMStoreImpl::Backend::LoadLastTokenFetchingTime(
+    base::Time* last_token_fetching_time) {
+  leveldb::ReadOptions read_options;
+  read_options.verify_checksums = true;
+
+  std::string result;
+  leveldb::Status s = db_->Get(read_options,
+                               MakeSlice(kLastTokenFetchingTimeKey),
+                               &result);
+  int64 time_internal = 0LL;
+  if (s.ok() && !base::StringToInt64(result, &time_internal))
+    LOG(ERROR) << "Failed to restore last checkin time. Using default = 0.";
+
+  // In case we cannot read last token fetching time, we default it to 0.
+  *last_token_fetching_time = base::Time::FromInternalValue(time_internal);
+
+  return true;
+}
+
 GCMStoreImpl::GCMStoreImpl(
     const base::FilePath& path,
     scoped_refptr<base::SequencedTaskRunner> blocking_task_runner,
     scoped_ptr<Encryptor> encryptor)
     : backend_(new Backend(path,
                            base::MessageLoopProxy::current(),
                            encryptor.Pass())),
       blocking_task_runner_(blocking_task_runner),
       weak_ptr_factory_(this) {
 }
@@ skipping 199 matching lines @@
 void GCMStoreImpl::RemoveAccountMapping(const std::string& account_id,
                                         const UpdateCallback& callback) {
   blocking_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&GCMStoreImpl::Backend::RemoveAccountMapping,
                  backend_,
                  account_id,
                  callback));
 }
 
+void GCMStoreImpl::SetLastTokenFetchingTime(const base::Time& time,
+                                            const UpdateCallback& callback) {
+  blocking_task_runner_->PostTask(
+      FROM_HERE,
+      base::Bind(&GCMStoreImpl::Backend::SetLastTokenFetchingTime,
+                 backend_,
+                 time,
+                 callback));
+}
+
 void GCMStoreImpl::LoadContinuation(const LoadCallback& callback,
                                     scoped_ptr<LoadResult> result) {
   if (!result->success) {
     callback.Run(result.Pass());
     return;
   }
   int num_throttled_apps = 0;
   for (OutgoingMessageMap::const_iterator
            iter = result->outgoing_messages.begin();
        iter != result->outgoing_messages.end(); ++iter) {
@@ skipping 34 matching lines @@
            removed_message_counts.begin();
        iter != removed_message_counts.end(); ++iter) {
     DCHECK_NE(app_message_counts_.count(iter->first), 0U);
     app_message_counts_[iter->first] -= iter->second;
     DCHECK_GE(app_message_counts_[iter->first], 0);
   }
   callback.Run(true);
 }
 
 }  // namespace gcm