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// 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.
//
// Simple system resources class that uses the current message loop
// for scheduling. Assumes the current message loop is already
// running.
#ifndef SYNC_NOTIFIER_CHROME_SYSTEM_RESOURCES_H_
#define SYNC_NOTIFIER_CHROME_SYSTEM_RESOURCES_H_
#pragma once
#include <set>
#include <string>
#include <vector>
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/message_loop.h"
#include "base/threading/non_thread_safe.h"
#include "google/cacheinvalidation/include/system-resources.h"
#include "sync/notifier/state_writer.h"
namespace sync_notifier {
class CacheInvalidationPacketHandler;
class ChromeLogger : public invalidation::Logger {
public:
ChromeLogger();
virtual ~ChromeLogger();
// invalidation::Logger implementation.
virtual void Log(LogLevel level, const char* file, int line,
const char* format, ...) OVERRIDE;
virtual void SetSystemResources(
invalidation::SystemResources* resources) OVERRIDE;
};
class ChromeScheduler : public invalidation::Scheduler {
public:
ChromeScheduler();
virtual ~ChromeScheduler();
// Start and stop the scheduler.
void Start();
void Stop();
// invalidation::Scheduler implementation.
virtual void Schedule(invalidation::TimeDelta delay,
invalidation::Closure* task) OVERRIDE;
virtual bool IsRunningOnThread() const OVERRIDE;
virtual invalidation::Time GetCurrentTime() const OVERRIDE;
virtual void SetSystemResources(
invalidation::SystemResources* resources) OVERRIDE;
private:
base::WeakPtrFactory<ChromeScheduler> weak_factory_;
// Holds all posted tasks that have not yet been run.
std::set<invalidation::Closure*> posted_tasks_;
const MessageLoop* created_on_loop_;
bool is_started_;
bool is_stopped_;
// Runs the task, deletes it, and removes it from |posted_tasks_|.
void RunPostedTask(invalidation::Closure* task);
};
class ChromeStorage : public invalidation::Storage {
public:
ChromeStorage(StateWriter* state_writer, invalidation::Scheduler* scheduler);
virtual ~ChromeStorage();
void SetInitialState(const std::string& value) {
cached_state_ = value;
}
// invalidation::Storage implementation.
virtual void WriteKey(const std::string& key, const std::string& value,
invalidation::WriteKeyCallback* done) OVERRIDE;
virtual void ReadKey(const std::string& key,
invalidation::ReadKeyCallback* done) OVERRIDE;
virtual void DeleteKey(const std::string& key,
invalidation::DeleteKeyCallback* done) OVERRIDE;
virtual void ReadAllKeys(
invalidation::ReadAllKeysCallback* key_callback) OVERRIDE;
virtual void SetSystemResources(
invalidation::SystemResources* resources) OVERRIDE;
private:
// Runs the given storage callback with SUCCESS status and deletes it.
void RunAndDeleteWriteKeyCallback(
invalidation::WriteKeyCallback* callback);
// Runs the given callback with the given value and deletes it.
void RunAndDeleteReadKeyCallback(
invalidation::ReadKeyCallback* callback, const std::string& value);
StateWriter* state_writer_;
invalidation::Scheduler* scheduler_;
std::string cached_state_;
};
class ChromeNetwork : public invalidation::NetworkChannel {
public:
ChromeNetwork();
virtual ~ChromeNetwork();
void UpdatePacketHandler(CacheInvalidationPacketHandler* packet_handler);
// invalidation::NetworkChannel implementation.
virtual void SendMessage(const std::string& outgoing_message) OVERRIDE;
virtual void SetMessageReceiver(
invalidation::MessageCallback* incoming_receiver) OVERRIDE;
virtual void AddNetworkStatusReceiver(
invalidation::NetworkStatusCallback* network_status_receiver) OVERRIDE;
virtual void SetSystemResources(
invalidation::SystemResources* resources) OVERRIDE;
private:
void HandleInboundMessage(const std::string& incoming_message);
CacheInvalidationPacketHandler* packet_handler_;
scoped_ptr<invalidation::MessageCallback> incoming_receiver_;
std::vector<invalidation::NetworkStatusCallback*> network_status_receivers_;
base::WeakPtrFactory<ChromeNetwork> weak_factory_;
};
class ChromeSystemResources : public invalidation::SystemResources {
public:
explicit ChromeSystemResources(StateWriter* state_writer);
virtual ~ChromeSystemResources();
// invalidation::SystemResources implementation.
virtual void Start() OVERRIDE;
virtual void Stop() OVERRIDE;
virtual bool IsStarted() const OVERRIDE;
virtual void set_platform(const std::string& platform);
virtual std::string platform() const OVERRIDE;
virtual ChromeLogger* logger() OVERRIDE;
virtual ChromeStorage* storage() OVERRIDE;
virtual ChromeNetwork* network() OVERRIDE;
virtual ChromeScheduler* internal_scheduler() OVERRIDE;
virtual ChromeScheduler* listener_scheduler() OVERRIDE;
private:
bool is_started_;
std::string platform_;
scoped_ptr<ChromeLogger> logger_;
scoped_ptr<ChromeScheduler> internal_scheduler_;
scoped_ptr<ChromeScheduler> listener_scheduler_;
scoped_ptr<ChromeStorage> storage_;
scoped_ptr<ChromeNetwork> network_;
};
} // namespace sync_notifier
#endif // SYNC_NOTIFIER_CHROME_SYSTEM_RESOURCES_H_
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