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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_ARC_TRACING_ARC_TRACING_BRIDGE_H_
#define CHROME_BROWSER_ASH_ARC_TRACING_ARC_TRACING_BRIDGE_H_
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "base/functional/callback_forward.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/synchronization/lock.h"
#include "base/thread_annotations.h"
#include "chromeos/ash/experiences/arc/mojom/tracing.mojom-forward.h"
#include "chromeos/ash/experiences/arc/session/connection_observer.h"
#include "components/keyed_service/core/keyed_service.h"
namespace content {
class BrowserContext;
} // namespace content
namespace arc {
class ArcBridgeService;
// This class provides the interface to trigger tracing in the container.
class ArcTracingBridge : public KeyedService,
public ConnectionObserver<mojom::TracingInstance> {
public:
// Returns singleton instance for the given BrowserContext,
// or nullptr if the browser |context| is not allowed to use ARC.
static ArcTracingBridge* GetForBrowserContext(
content::BrowserContext* context);
static ArcTracingBridge* GetForBrowserContextForTesting(
content::BrowserContext* context);
ArcTracingBridge(content::BrowserContext* context,
ArcBridgeService* bridge_service);
ArcTracingBridge(const ArcTracingBridge&) = delete;
ArcTracingBridge& operator=(const ArcTracingBridge&) = delete;
~ArcTracingBridge() override;
void GetCategories(std::set<std::string>* category_set);
// ConnectionObserver<mojom::TracingInstance> overrides:
void OnConnectionReady() override;
// State of the tracing activity of the bridge.
enum class State { kDisabled, kStarting, kEnabled, kStopping };
State state() const { return state_; }
using StartCallback = base::OnceCallback<void(bool)>;
using StopCallback = base::OnceCallback<void()>;
// Starts tracing and calls |callback| when started indicating whether tracing
// was started successfully via its parameter.
void StartTracing(const std::string& config, StartCallback callback);
// Stops tracing and calls |callback| when stopped.
void StopTracing(StopCallback callback);
static void EnsureFactoryBuilt();
private:
struct Category;
// Callback for QueryAvailableCategories.
void OnCategoriesReady(const std::vector<std::string>& categories);
void OnArcTracingStarted(StartCallback callback, bool success);
void OnArcTracingStopped(StopCallback callback, bool success);
const raw_ptr<ArcBridgeService>
arc_bridge_service_; // Owned by ArcServiceManager.
// List of available categories.
base::Lock categories_lock_;
std::vector<Category> categories_ GUARDED_BY(categories_lock_);
State state_ = State::kDisabled;
// NOTE: Weak pointers must be invalidated before all other member variables
// so it must be the last member.
base::WeakPtrFactory<ArcTracingBridge> weak_ptr_factory_{this};
};
} // namespace arc
#endif // CHROME_BROWSER_ASH_ARC_TRACING_ARC_TRACING_BRIDGE_H_
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