components/gcm_driver/gcm_driver.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/gcm_driver/gcm_driver.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/bind.h"
  10 #include "base/logging.h"
  11 #include "components/gcm_driver/gcm_app_handler.h"
  12
  13 namespace gcm {
  14
  15 namespace {
  16 const size_t kMaxSenders = 100;
  17 }  // namespace
  18
  19 InstanceIDHandler::InstanceIDHandler() {
  20 }
  21
  22 InstanceIDHandler::~InstanceIDHandler() {
  23 }
  24
  25 void InstanceIDHandler::DeleteAllTokensForApp(
  26     const std::string& app_id, const DeleteTokenCallback& callback) {
  27   DeleteToken(app_id, "*", "*", callback);
  28 }
  29
  30 GCMDriver::GCMDriver() : weak_ptr_factory_(this) {
  31 }
  32
  33 GCMDriver::~GCMDriver() {
  34 }
  35
  36 void GCMDriver::Register(const std::string& app_id,
  37                          const std::vector<std::string>& sender_ids,
  38                          const RegisterCallback& callback) {
  39   DCHECK(!app_id.empty());
  40   DCHECK(!sender_ids.empty() && sender_ids.size() <= kMaxSenders);
  41   DCHECK(!callback.is_null());
  42
  43   GCMClient::Result result = EnsureStarted(GCMClient::IMMEDIATE_START);
  44   if (result != GCMClient::SUCCESS) {
  45     callback.Run(std::string(), result);
  46     return;
  47   }
  48
  49   // If previous register operation is still in progress, bail out.
  50   if (register_callbacks_.find(app_id) != register_callbacks_.end()) {
  51     callback.Run(std::string(), GCMClient::ASYNC_OPERATION_PENDING);
  52     return;
  53   }
  54
  55   // Normalize the sender IDs by making them sorted.
  56   std::vector<std::string> normalized_sender_ids = sender_ids;
  57   std::sort(normalized_sender_ids.begin(), normalized_sender_ids.end());
  58
  59   register_callbacks_[app_id] = callback;
  60
  61   // If previous unregister operation is still in progress, wait until it
  62   // finishes. We don't want to throw ASYNC_OPERATION_PENDING when the user
  63   // uninstalls an app (ungistering) and then reinstalls the app again
  64   // (registering).
  65   std::map<std::string, UnregisterCallback>::iterator unregister_iter =
  66       unregister_callbacks_.find(app_id);
  67   if (unregister_iter != unregister_callbacks_.end()) {
  68     // Replace the original unregister callback with an intermediate callback
  69     // that will invoke the original unregister callback and trigger the pending
  70     // registration after the unregistration finishes.
  71     // Note that some parameters to RegisterAfterUnregister are specified here
  72     // when the callback is created (base::Bind supports the partial binding
  73     // of parameters).
  74     unregister_iter->second = base::Bind(
  75         &GCMDriver::RegisterAfterUnregister,
  76         weak_ptr_factory_.GetWeakPtr(),
  77         app_id,
  78         normalized_sender_ids,
  79         unregister_iter->second);
  80     return;
  81   }
  82
  83   RegisterImpl(app_id, normalized_sender_ids);
  84 }
  85
  86 void GCMDriver::Unregister(const std::string& app_id,
  87                            const UnregisterCallback& callback) {
  88   UnregisterInternal(app_id, nullptr /* sender_id */, callback);
  89 }
  90
  91 void GCMDriver::UnregisterWithSenderId(
  92     const std::string& app_id,
  93     const std::string& sender_id,
  94     const UnregisterCallback& callback) {
  95   DCHECK(!sender_id.empty());
  96   UnregisterInternal(app_id, &sender_id, callback);
  97 }
  98
  99 void GCMDriver::UnregisterInternal(const std::string& app_id,
 100                                    const std::string* sender_id,
 101                                    const UnregisterCallback& callback) {
 102   DCHECK(!app_id.empty());
 103   DCHECK(!callback.is_null());
 104
 105   GCMClient::Result result = EnsureStarted(GCMClient::IMMEDIATE_START);
 106   if (result != GCMClient::SUCCESS) {
 107     callback.Run(result);
 108     return;
 109   }
 110
 111   // If previous un/register operation is still in progress, bail out.
 112   if (register_callbacks_.find(app_id) != register_callbacks_.end() ||
 113       unregister_callbacks_.find(app_id) != unregister_callbacks_.end()) {
 114     callback.Run(GCMClient::ASYNC_OPERATION_PENDING);
 115     return;
 116   }
 117
 118   unregister_callbacks_[app_id] = callback;
 119
 120   if (sender_id)
 121     UnregisterWithSenderIdImpl(app_id, *sender_id);
 122   else
 123     UnregisterImpl(app_id);
 124 }
 125
 126 void GCMDriver::Send(const std::string& app_id,
 127                      const std::string& receiver_id,
 128                      const OutgoingMessage& message,
 129                      const SendCallback& callback) {
 130   DCHECK(!app_id.empty());
 131   DCHECK(!receiver_id.empty());
 132   DCHECK(!callback.is_null());
 133
 134   GCMClient::Result result = EnsureStarted(GCMClient::IMMEDIATE_START);
 135   if (result != GCMClient::SUCCESS) {
 136     callback.Run(std::string(), result);
 137     return;
 138   }
 139
 140   // If the message with send ID is still in progress, bail out.
 141   std::pair<std::string, std::string> key(app_id, message.id);
 142   if (send_callbacks_.find(key) != send_callbacks_.end()) {
 143     callback.Run(message.id, GCMClient::INVALID_PARAMETER);
 144     return;
 145   }
 146
 147   send_callbacks_[key] = callback;
 148
 149   SendImpl(app_id, receiver_id, message);
 150 }
 151
 152 void GCMDriver::UnregisterWithSenderIdImpl(const std::string& app_id,
 153                                            const std::string& sender_id) {
 154   NOTREACHED();
 155 }
 156
 157 void GCMDriver::RegisterFinished(const std::string& app_id,
 158                                  const std::string& registration_id,
 159                                  GCMClient::Result result) {
 160   std::map<std::string, RegisterCallback>::iterator callback_iter =
 161       register_callbacks_.find(app_id);
 162   if (callback_iter == register_callbacks_.end()) {
 163     // The callback could have been removed when the app is uninstalled.
 164     return;
 165   }
 166
 167   RegisterCallback callback = callback_iter->second;
 168   register_callbacks_.erase(callback_iter);
 169   callback.Run(registration_id, result);
 170 }
 171
 172 void GCMDriver::UnregisterFinished(const std::string& app_id,
 173                                    GCMClient::Result result) {
 174   std::map<std::string, UnregisterCallback>::iterator callback_iter =
 175       unregister_callbacks_.find(app_id);
 176   if (callback_iter == unregister_callbacks_.end())
 177     return;
 178
 179   UnregisterCallback callback = callback_iter->second;
 180   unregister_callbacks_.erase(callback_iter);
 181   callback.Run(result);
 182 }
 183
 184 void GCMDriver::SendFinished(const std::string& app_id,
 185                              const std::string& message_id,
 186                              GCMClient::Result result) {
 187   std::map<std::pair<std::string, std::string>, SendCallback>::iterator
 188       callback_iter = send_callbacks_.find(
 189           std::pair<std::string, std::string>(app_id, message_id));
 190   if (callback_iter == send_callbacks_.end()) {
 191     // The callback could have been removed when the app is uninstalled.
 192     return;
 193   }
 194
 195   SendCallback callback = callback_iter->second;
 196   send_callbacks_.erase(callback_iter);
 197   callback.Run(message_id, result);
 198 }
 199
 200 void GCMDriver::Shutdown() {
 201   for (GCMAppHandlerMap::const_iterator iter = app_handlers_.begin();
 202        iter != app_handlers_.end(); ++iter) {
 203     DVLOG(1) << "Calling ShutdownHandler for: " << iter->first;
 204     iter->second->ShutdownHandler();
 205   }
 206   app_handlers_.clear();
 207 }
 208
 209 void GCMDriver::AddAppHandler(const std::string& app_id,
 210                               GCMAppHandler* handler) {
 211   DCHECK(!app_id.empty());
 212   DCHECK(handler);
 213   DCHECK_EQ(app_handlers_.count(app_id), 0u);
 214   app_handlers_[app_id] = handler;
 215   DVLOG(1) << "App handler added for: " << app_id;
 216 }
 217
 218 void GCMDriver::RemoveAppHandler(const std::string& app_id) {
 219   DCHECK(!app_id.empty());
 220   app_handlers_.erase(app_id);
 221   DVLOG(1) << "App handler removed for: " << app_id;
 222 }
 223
 224 GCMAppHandler* GCMDriver::GetAppHandler(const std::string& app_id) {
 225   // Look for exact match.
 226   GCMAppHandlerMap::const_iterator iter = app_handlers_.find(app_id);
 227   if (iter != app_handlers_.end())
 228     return iter->second;
 229
 230   // Ask the handlers whether they know how to handle it.
 231   for (iter = app_handlers_.begin(); iter != app_handlers_.end(); ++iter) {
 232     if (iter->second->CanHandle(app_id))
 233       return iter->second;
 234   }
 235
 236   return &default_app_handler_;
 237 }
 238
 239 bool GCMDriver::HasRegisterCallback(const std::string& app_id) {
 240   return register_callbacks_.find(app_id) != register_callbacks_.end();
 241 }
 242
 243 void GCMDriver::ClearCallbacks() {
 244   register_callbacks_.clear();
 245   unregister_callbacks_.clear();
 246   send_callbacks_.clear();
 247 }
 248
 249 void GCMDriver::RegisterAfterUnregister(
 250     const std::string& app_id,
 251     const std::vector<std::string>& normalized_sender_ids,
 252     const UnregisterCallback& unregister_callback,
 253     GCMClient::Result result) {
 254   // Invoke the original unregister callback.
 255   unregister_callback.Run(result);
 256
 257   // Trigger the pending registration.
 258   DCHECK(register_callbacks_.find(app_id) != register_callbacks_.end());
 259   RegisterImpl(app_id, normalized_sender_ids);
 260 }
 261
 262 }  // namespace gcm