Revert of Move some sync/notifier to components/invalidation

sync/notifier/sync_system_resources.cc

Index: sync/notifier/sync_system_resources.cc
diff --git a/sync/notifier/sync_system_resources.cc b/sync/notifier/sync_system_resources.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f688609f13e3eb0c21e9b9e626b62cb0b061351a
--- /dev/null
+++ b/sync/notifier/sync_system_resources.cc
@@ -0,0 +1,333 @@
+// Copyright (c) 2012 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 "sync/notifier/sync_system_resources.h"
+
+#include <cstdlib>
+#include <cstring>
+#include <string>
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "base/message_loop/message_loop.h"
+#include "base/stl_util.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
+#include "google/cacheinvalidation/deps/callback.h"
+#include "google/cacheinvalidation/include/types.h"
+#include "jingle/notifier/listener/push_client.h"
+#include "sync/notifier/gcm_network_channel.h"
+#include "sync/notifier/gcm_network_channel_delegate.h"
+#include "sync/notifier/invalidation_util.h"
+#include "sync/notifier/push_client_channel.h"
+
+namespace syncer {
+
+SyncLogger::SyncLogger() {}
+SyncLogger::~SyncLogger() {}
+
+void SyncLogger::Log(LogLevel level, const char* file, int line,
+                     const char* format, ...) {
+  logging::LogSeverity log_severity = -2;  // VLOG(2)
+  bool emit_log = false;
+  switch (level) {
+    case FINE_LEVEL:
+      log_severity = -2;  // VLOG(2)
+      emit_log = VLOG_IS_ON(2);
+      break;
+    case INFO_LEVEL:
+      log_severity = -1;  // VLOG(1)
+      emit_log = VLOG_IS_ON(1);
+      break;
+    case WARNING_LEVEL:
+      log_severity = logging::LOG_WARNING;
+      emit_log = LOG_IS_ON(WARNING);
+      break;
+    case SEVERE_LEVEL:
+      log_severity = logging::LOG_ERROR;
+      emit_log = LOG_IS_ON(ERROR);
+      break;
+  }
+  if (emit_log) {
+    va_list ap;
+    va_start(ap, format);
+    std::string result;
+    base::StringAppendV(&result, format, ap);
+    logging::LogMessage(file, line, log_severity).stream() << result;
+    va_end(ap);
+  }
+}
+
+void SyncLogger::SetSystemResources(invalidation::SystemResources* resources) {
+  // Do nothing.
+}
+
+SyncInvalidationScheduler::SyncInvalidationScheduler()
+    : created_on_loop_(base::MessageLoop::current()),
+      is_started_(false),
+      is_stopped_(false),
+      weak_factory_(this) {
+  CHECK(created_on_loop_);
+}
+
+SyncInvalidationScheduler::~SyncInvalidationScheduler() {
+  CHECK_EQ(created_on_loop_, base::MessageLoop::current());
+  CHECK(is_stopped_);
+}
+
+void SyncInvalidationScheduler::Start() {
+  CHECK_EQ(created_on_loop_, base::MessageLoop::current());
+  CHECK(!is_started_);
+  is_started_ = true;
+  is_stopped_ = false;
+  weak_factory_.InvalidateWeakPtrs();
+}
+
+void SyncInvalidationScheduler::Stop() {
+  CHECK_EQ(created_on_loop_, base::MessageLoop::current());
+  is_stopped_ = true;
+  is_started_ = false;
+  weak_factory_.InvalidateWeakPtrs();
+  STLDeleteElements(&posted_tasks_);
+  posted_tasks_.clear();
+}
+
+void SyncInvalidationScheduler::Schedule(invalidation::TimeDelta delay,
+                                         invalidation::Closure* task) {
+  DCHECK(invalidation::IsCallbackRepeatable(task));
+  CHECK_EQ(created_on_loop_, base::MessageLoop::current());
+
+  if (!is_started_) {
+    delete task;
+    return;
+  }
+
+  posted_tasks_.insert(task);
+  base::MessageLoop::current()->PostDelayedTask(
+      FROM_HERE, base::Bind(&SyncInvalidationScheduler::RunPostedTask,
+                            weak_factory_.GetWeakPtr(), task),
+      delay);
+}
+
+bool SyncInvalidationScheduler::IsRunningOnThread() const {
+  return created_on_loop_ == base::MessageLoop::current();
+}
+
+invalidation::Time SyncInvalidationScheduler::GetCurrentTime() const {
+  CHECK_EQ(created_on_loop_, base::MessageLoop::current());
+  return base::Time::Now();
+}
+
+void SyncInvalidationScheduler::SetSystemResources(
+    invalidation::SystemResources* resources) {
+  // Do nothing.
+}
+
+void SyncInvalidationScheduler::RunPostedTask(invalidation::Closure* task) {
+  CHECK_EQ(created_on_loop_, base::MessageLoop::current());
+  task->Run();
+  posted_tasks_.erase(task);
+  delete task;
+}
+
+SyncNetworkChannel::SyncNetworkChannel()
+    : invalidator_state_(DEFAULT_INVALIDATION_ERROR),
+      received_messages_count_(0) {}
+
+SyncNetworkChannel::~SyncNetworkChannel() {
+  STLDeleteElements(&network_status_receivers_);
+}
+
+void SyncNetworkChannel::SetMessageReceiver(
+    invalidation::MessageCallback* incoming_receiver) {
+  incoming_receiver_.reset(incoming_receiver);
+}
+
+void SyncNetworkChannel::AddNetworkStatusReceiver(
+    invalidation::NetworkStatusCallback* network_status_receiver) {
+  network_status_receiver->Run(invalidator_state_ == INVALIDATIONS_ENABLED);
+  network_status_receivers_.push_back(network_status_receiver);
+}
+
+void SyncNetworkChannel::SetSystemResources(
+    invalidation::SystemResources* resources) {
+  // Do nothing.
+}
+
+void SyncNetworkChannel::AddObserver(Observer* observer) {
+  observers_.AddObserver(observer);
+}
+
+void SyncNetworkChannel::RemoveObserver(Observer* observer) {
+  observers_.RemoveObserver(observer);
+}
+
+scoped_ptr<SyncNetworkChannel> SyncNetworkChannel::CreatePushClientChannel(
+    const notifier::NotifierOptions& notifier_options) {
+  scoped_ptr<notifier::PushClient> push_client(
+      notifier::PushClient::CreateDefaultOnIOThread(notifier_options));
+  return scoped_ptr<SyncNetworkChannel>(
+      new PushClientChannel(push_client.Pass()));
+}
+
+scoped_ptr<SyncNetworkChannel> SyncNetworkChannel::CreateGCMNetworkChannel(
+    scoped_refptr<net::URLRequestContextGetter> request_context_getter,
+    scoped_ptr<GCMNetworkChannelDelegate> delegate) {
+  return scoped_ptr<SyncNetworkChannel>(new GCMNetworkChannel(
+      request_context_getter, delegate.Pass()));
+}
+
+void SyncNetworkChannel::NotifyStateChange(InvalidatorState invalidator_state) {
+  // Remember state for future NetworkStatusReceivers.
+  invalidator_state_ = invalidator_state;
+  // Notify NetworkStatusReceivers in cacheinvalidation.
+  for (NetworkStatusReceiverList::const_iterator it =
+           network_status_receivers_.begin();
+       it != network_status_receivers_.end(); ++it) {
+    (*it)->Run(invalidator_state_ == INVALIDATIONS_ENABLED);
+  }
+  // Notify observers.
+  FOR_EACH_OBSERVER(Observer, observers_,
+                    OnNetworkChannelStateChanged(invalidator_state_));
+}
+
+bool SyncNetworkChannel::DeliverIncomingMessage(const std::string& message) {
+  if (!incoming_receiver_) {
+    DLOG(ERROR) << "No receiver for incoming notification";
+    return false;
+  }
+  received_messages_count_++;
+  incoming_receiver_->Run(message);
+  return true;
+}
+
+int SyncNetworkChannel::GetReceivedMessagesCount() const {
+  return received_messages_count_;
+}
+
+SyncStorage::SyncStorage(StateWriter* state_writer,
+                         invalidation::Scheduler* scheduler)
+    : state_writer_(state_writer),
+      scheduler_(scheduler) {
+  DCHECK(state_writer_);
+  DCHECK(scheduler_);
+}
+
+SyncStorage::~SyncStorage() {}
+
+void SyncStorage::WriteKey(const std::string& key, const std::string& value,
+                           invalidation::WriteKeyCallback* done) {
+  CHECK(state_writer_);
+  // TODO(ghc): actually write key,value associations, and don't invoke the
+  // callback until the operation completes.
+  state_writer_->WriteState(value);
+  cached_state_ = value;
+  // According to the cache invalidation API folks, we can do this as
+  // long as we make sure to clear the persistent state that we start
+  // up the cache invalidation client with.  However, we musn't do it
+  // right away, as we may be called under a lock that the callback
+  // uses.
+  scheduler_->Schedule(
+      invalidation::Scheduler::NoDelay(),
+      invalidation::NewPermanentCallback(
+          this, &SyncStorage::RunAndDeleteWriteKeyCallback,
+          done));
+}
+
+void SyncStorage::ReadKey(const std::string& key,
+                          invalidation::ReadKeyCallback* done) {
+  DCHECK(scheduler_->IsRunningOnThread()) << "not running on scheduler thread";
+  RunAndDeleteReadKeyCallback(done, cached_state_);
+}
+
+void SyncStorage::DeleteKey(const std::string& key,
+                            invalidation::DeleteKeyCallback* done) {
+  // TODO(ghc): Implement.
+  LOG(WARNING) << "ignoring call to DeleteKey(" << key << ", callback)";
+}
+
+void SyncStorage::ReadAllKeys(invalidation::ReadAllKeysCallback* done) {
+  // TODO(ghc): Implement.
+  LOG(WARNING) << "ignoring call to ReadAllKeys(callback)";
+}
+
+void SyncStorage::SetSystemResources(
+    invalidation::SystemResources* resources) {
+  // Do nothing.
+}
+
+void SyncStorage::RunAndDeleteWriteKeyCallback(
+    invalidation::WriteKeyCallback* callback) {
+  callback->Run(
+      invalidation::Status(invalidation::Status::SUCCESS, std::string()));
+  delete callback;
+}
+
+void SyncStorage::RunAndDeleteReadKeyCallback(
+    invalidation::ReadKeyCallback* callback, const std::string& value) {
+  callback->Run(std::make_pair(
+      invalidation::Status(invalidation::Status::SUCCESS, std::string()),
+      value));
+  delete callback;
+}
+
+SyncSystemResources::SyncSystemResources(
+    SyncNetworkChannel* sync_network_channel,
+    StateWriter* state_writer)
+    : is_started_(false),
+      logger_(new SyncLogger()),
+      internal_scheduler_(new SyncInvalidationScheduler()),
+      listener_scheduler_(new SyncInvalidationScheduler()),
+      storage_(new SyncStorage(state_writer, internal_scheduler_.get())),
+      sync_network_channel_(sync_network_channel) {
+}
+
+SyncSystemResources::~SyncSystemResources() {
+  Stop();
+}
+
+void SyncSystemResources::Start() {
+  internal_scheduler_->Start();
+  listener_scheduler_->Start();
+  is_started_ = true;
+}
+
+void SyncSystemResources::Stop() {
+  internal_scheduler_->Stop();
+  listener_scheduler_->Stop();
+}
+
+bool SyncSystemResources::IsStarted() const {
+  return is_started_;
+}
+
+void SyncSystemResources::set_platform(const std::string& platform) {
+  platform_ = platform;
+}
+
+std::string SyncSystemResources::platform() const {
+  return platform_;
+}
+
+SyncLogger* SyncSystemResources::logger() {
+  return logger_.get();
+}
+
+SyncStorage* SyncSystemResources::storage() {
+  return storage_.get();
+}
+
+SyncNetworkChannel* SyncSystemResources::network() {
+  return sync_network_channel_;
+}
+
+SyncInvalidationScheduler* SyncSystemResources::internal_scheduler() {
+  return internal_scheduler_.get();
+}
+
+SyncInvalidationScheduler* SyncSystemResources::listener_scheduler() {
+  return listener_scheduler_.get();
+}
+
+}  // namespace syncer