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// 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.
#ifndef CHROME_BROWSER_METRICS_PLUGIN_METRICS_PROVIDER_H_
#define CHROME_BROWSER_METRICS_PLUGIN_METRICS_PROVIDER_H_
#include <map>
#include <vector>
#include "base/basictypes.h"
#include "base/gtest_prod_util.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/string16.h"
#include "components/metrics/metrics_provider.h"
#include "content/public/browser/browser_child_process_observer.h"
namespace base {
class FilePath;
}
namespace content {
struct WebPluginInfo;
}
class PrefRegistrySimple;
class PrefService;
// PluginMetricsProvider is responsible for adding out plugin information to
// the UMA proto.
class PluginMetricsProvider : public metrics::MetricsProvider,
public content::BrowserChildProcessObserver {
public:
explicit PluginMetricsProvider(PrefService* local_state);
~PluginMetricsProvider() override;
// Fetches plugin information data asynchronously and calls |done_callback|
// when done.
void GetPluginInformation(const base::Closure& done_callback);
// metrics::MetricsDataProvider:
void ProvideSystemProfileMetrics(
metrics::SystemProfileProto* system_profile_proto) override;
void ProvideStabilityMetrics(
metrics::SystemProfileProto* system_profile_proto) override;
void ClearSavedStabilityMetrics() override;
// Notifies the provider about an error loading the plugin at |plugin_path|.
void LogPluginLoadingError(const base::FilePath& plugin_path);
// Sets this provider's list of plugins, exposed for testing.
void SetPluginsForTesting(const std::vector<content::WebPluginInfo>& plugins);
// Returns true if process of type |type| should be counted as a plugin
// process, and false otherwise.
static bool IsPluginProcess(int process_type);
// Registers local state prefs used by this class.
static void RegisterPrefs(PrefRegistrySimple* registry);
private:
FRIEND_TEST_ALL_PREFIXES(PluginMetricsProviderTest,
RecordCurrentStateWithDelay);
FRIEND_TEST_ALL_PREFIXES(PluginMetricsProviderTest,
RecordCurrentStateIfPending);
FRIEND_TEST_ALL_PREFIXES(PluginMetricsProviderTest,
ProvideStabilityMetricsWhenPendingTask);
struct ChildProcessStats;
// Receives the plugin list from the PluginService and calls |done_callback|.
void OnGotPlugins(const base::Closure& done_callback,
const std::vector<content::WebPluginInfo>& plugins);
// Returns reference to ChildProcessStats corresponding to |data|.
ChildProcessStats& GetChildProcessStats(
const content::ChildProcessData& data);
// Saves plugin information to local state.
void RecordCurrentState();
// Posts a delayed task for RecordCurrentState. Returns true if new task is
// posted and false if there was one already waiting for execution.
// The param delay_sec is for unit tests.
bool RecordCurrentStateWithDelay(int delay_ms);
// If a delayed RecordCurrnetState task exists then cancels it, calls
// RecordCurrentState immediately and returns true. Otherwise returns false.
bool RecordCurrentStateIfPending();
// content::BrowserChildProcessObserver:
void BrowserChildProcessHostConnected(
const content::ChildProcessData& data) override;
void BrowserChildProcessCrashed(
const content::ChildProcessData& data) override;
void BrowserChildProcessInstanceCreated(
const content::ChildProcessData& data) override;
PrefService* local_state_;
// The list of plugins which was retrieved on the file thread.
std::vector<content::WebPluginInfo> plugins_;
// Buffer of child process notifications for quick access.
std::map<base::string16, ChildProcessStats> child_process_stats_buffer_;
base::WeakPtrFactory<PluginMetricsProvider> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(PluginMetricsProvider);
};
#endif // CHROME_BROWSER_METRICS_PLUGIN_METRICS_PROVIDER_H_
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