Move statistics_provider to chromeos/system

chrome/browser/chromeos/system/statistics_provider.cc

Index: chrome/browser/chromeos/system/statistics_provider.cc
diff --git a/chrome/browser/chromeos/system/statistics_provider.cc b/chrome/browser/chromeos/system/statistics_provider.cc
deleted file mode 100644
index e5fd3dce5620a10065a1c4aa16e807fdf6f238e2..0000000000000000000000000000000000000000
--- a/chrome/browser/chromeos/system/statistics_provider.cc
+++ /dev/null
@@ -1,311 +0,0 @@
-// 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 "chrome/browser/chromeos/system/statistics_provider.h"
-
-#include "base/bind.h"
-#include "base/command_line.h"
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/memory/singleton.h"
-#include "base/path_service.h"
-#include "base/synchronization/waitable_event.h"
-#include "base/sys_info.h"
-#include "base/threading/thread_restrictions.h"
-#include "base/time/time.h"
-#include "chromeos/app_mode/kiosk_oem_manifest_parser.h"
-#include "chromeos/chromeos_constants.h"
-#include "chromeos/chromeos_switches.h"
-#include "chromeos/system/name_value_pairs_parser.h"
-#include "content/public/browser/browser_thread.h"
-
-using content::BrowserThread;
-
-namespace chromeos {
-namespace system {
-namespace {
-
-// Path to the tool used to get system info, and delimiters for the output
-// format of the tool.
-const char* kCrosSystemTool[] = { "/usr/bin/crossystem" };
-const char kCrosSystemEq[] = "=";
-const char kCrosSystemDelim[] = "\n";
-const char kCrosSystemCommentDelim[] = "#";
-const char kCrosSystemUnknownValue[] = "(error)";
-
-const char kHardwareClassCrosSystemKey[] = "hwid";
-const char kHardwareClassKey[] = "hardware_class";
-const char kUnknownHardwareClass[] = "unknown";
-
-// File to get machine hardware info from, and key/value delimiters of
-// the file.
-// /tmp/machine-info is generated by platform/init/chromeos_startup.
-const char kMachineHardwareInfoFile[] = "/tmp/machine-info";
-const char kMachineHardwareInfoEq[] = "=";
-const char kMachineHardwareInfoDelim[] = " \n";
-
-// File to get ECHO coupon info from, and key/value delimiters of
-// the file.
-const char kEchoCouponFile[] = "/var/cache/echo/vpd_echo.txt";
-const char kEchoCouponEq[] = "=";
-const char kEchoCouponDelim[] = "\n";
-
-// File to get VPD info from, and key/value delimiters of the file.
-const char kVpdFile[] = "/var/log/vpd_2.0.txt";
-const char kVpdEq[] = "=";
-const char kVpdDelim[] = "\n";
-
-// Timeout that we should wait for statistics to get loaded
-const int kTimeoutSecs = 3;
-
-// The location of OEM manifest file used to trigger OOBE flow for kiosk mode.
-const CommandLine::CharType kOemManifestFilePath[] =
-    FILE_PATH_LITERAL("/usr/share/oem/oobe/manifest.json");
-
-}  // namespace
-
-// Key values for GetMachineStatistic()/GetMachineFlag() calls.
-const char kDevSwitchBootMode[] = "devsw_boot";
-const char kHardwareClass[] = "hardware_class";
-const char kOffersCouponCodeKey[] = "ubind_attribute";
-const char kOffersGroupCodeKey[] = "gbind_attribute";
-const char kOemCanExitEnterpriseEnrollmentKey[] =
-    "oem_can_exit_enrollment";
-const char kOemDeviceRequisitionKey[] =
-    "oem_device_requisition";
-const char kOemIsEnterpriseManagedKey[] =
-    "oem_enterprise_managed";
-const char kOemKeyboardDrivenOobeKey[] =
-    "oem_keyboard_driven_oobe";
-
-// The StatisticsProvider implementation used in production.
-class StatisticsProviderImpl : public StatisticsProvider {
- public:
-  // StatisticsProvider implementation:
-  virtual void Init() OVERRIDE;
-  virtual void StartLoadingMachineStatistics() OVERRIDE;
-  virtual bool GetMachineStatistic(const std::string& name,
-                                   std::string* result) OVERRIDE;
-  virtual bool GetMachineFlag(const std::string& name,
-                              bool* result) OVERRIDE;
-  virtual void LoadOemManifest() OVERRIDE;
-
-  static StatisticsProviderImpl* GetInstance();
-
- protected:
-  StatisticsProviderImpl();
-  void LoadOemManifestFromFile(const base::FilePath& file);
-
- private:
-  typedef std::map<std::string, bool> MachineFlags;
-  friend struct DefaultSingletonTraits<StatisticsProviderImpl>;
-
-  // Loads the machine statistcs by examining the system.
-  void LoadMachineStatistics();
-
-  bool initialized_;
-  bool load_statistics_started_;
-  NameValuePairsParser::NameValueMap machine_info_;
-  MachineFlags machine_flags_;
-  base::WaitableEvent on_statistics_loaded_;
-
-  DISALLOW_COPY_AND_ASSIGN(StatisticsProviderImpl);
-};
-
-void StatisticsProviderImpl::Init() {
-  DCHECK(!initialized_);
-  initialized_ = true;
-}
-
-bool StatisticsProviderImpl::GetMachineStatistic(
-    const std::string& name, std::string* result) {
-  CHECK(initialized_);
-  CHECK(load_statistics_started_)
-      << "GetMachineStatistic called before load started: " << name;
-
-  VLOG(1) << "Statistic is requested for " << name;
-  // Block if the statistics are not loaded yet. Per LOG(WARNING) below,
-  // the statistics are loaded before requested as of now. For regular
-  // sessions (i.e. not OOBE), statistics are first requested when the
-  // user is logging in so we have plenty of time to load the data
-  // beforehand.
-  //
-  // If you see the warning appeared for regular sessions, it probably
-  // means that there is new client code that uses the statistics in the
-  // very early stage of the browser startup. The statistic name should be
-  // helpful to identify the caller.
-  if (!on_statistics_loaded_.IsSignaled()) {
-    // http://crbug.com/125385
-    base::Time start_time = base::Time::Now();
-    base::ThreadRestrictions::ScopedAllowWait allow_wait;
-    on_statistics_loaded_.TimedWait(base::TimeDelta::FromSeconds(kTimeoutSecs));
-    base::TimeDelta dtime = base::Time::Now() - start_time;
-    if (!on_statistics_loaded_.IsSignaled()) {
-      LOG(ERROR) << "Statistics weren't loaded after waiting "
-                 << dtime.InMilliseconds() << "ms. "
-                 << "Requested statistic: " << name;
-      return false;
-    } else {
-      LOG(ERROR) << "Statistic loaded after waiting "
-                 << dtime.InMilliseconds() << "ms. "
-                 << "Requested statistic: " << name;
-    }
-  }
-
-  NameValuePairsParser::NameValueMap::iterator iter = machine_info_.find(name);
-  if (iter != machine_info_.end()) {
-    *result = iter->second;
-    return true;
-  }
-  return false;
-}
-
-bool StatisticsProviderImpl::GetMachineFlag(
-    const std::string& name, bool* result) {
-  MachineFlags::const_iterator iter = machine_flags_.find(name);
-  if (iter != machine_flags_.end()) {
-    *result = iter->second;
-    return true;
-  }
-
-  return false;
-}
-
-void StatisticsProviderImpl::LoadOemManifest() {
-  LoadOemManifestFromFile(base::FilePath(kOemManifestFilePath));
-}
-
-// manual_reset needs to be true, as we want to keep the signaled state.
-StatisticsProviderImpl::StatisticsProviderImpl()
-    : initialized_(false),
-      load_statistics_started_(false),
-      on_statistics_loaded_(true  /* manual_reset */,
-                            false /* initially_signaled */) {
-}
-
-void StatisticsProviderImpl::StartLoadingMachineStatistics() {
-  DCHECK(initialized_);
-  DCHECK(!load_statistics_started_);
-  load_statistics_started_ = true;
-
-  VLOG(1) << "Started loading statistics";
-  BrowserThread::PostBlockingPoolTask(
-      FROM_HERE,
-      base::Bind(&StatisticsProviderImpl::LoadMachineStatistics,
-                 base::Unretained(this)));
-}
-
-void StatisticsProviderImpl::LoadMachineStatistics() {
-  NameValuePairsParser parser(&machine_info_);
-
-  // Parse all of the key/value pairs from the crossystem tool.
-  if (!parser.ParseNameValuePairsFromTool(
-          arraysize(kCrosSystemTool), kCrosSystemTool, kCrosSystemEq,
-          kCrosSystemDelim, kCrosSystemCommentDelim)) {
-    LOG(WARNING) << "There were errors parsing the output of "
-                 << kCrosSystemTool << ".";
-  }
-
-  // Ensure that the hardware class key is present with the expected
-  // key name, and if it couldn't be retrieved, that the value is "unknown".
-  std::string hardware_class = machine_info_[kHardwareClassCrosSystemKey];
-  if (hardware_class.empty() || hardware_class == kCrosSystemUnknownValue)
-    machine_info_[kHardwareClassKey] = kUnknownHardwareClass;
-  else
-    machine_info_[kHardwareClassKey] = hardware_class;
-
-  parser.GetNameValuePairsFromFile(base::FilePath(kMachineHardwareInfoFile),
-                                   kMachineHardwareInfoEq,
-                                   kMachineHardwareInfoDelim);
-  parser.GetNameValuePairsFromFile(base::FilePath(kEchoCouponFile),
-                                   kEchoCouponEq,
-                                   kEchoCouponDelim);
-  parser.GetNameValuePairsFromFile(base::FilePath(kVpdFile), kVpdEq, kVpdDelim);
-
-  // Finished loading the statistics.
-  on_statistics_loaded_.Signal();
-  VLOG(1) << "Finished loading statistics";
-}
-
-void StatisticsProviderImpl::LoadOemManifestFromFile(
-    const base::FilePath& file) {
-  KioskOemManifestParser::Manifest oem_manifest;
-  if (!KioskOemManifestParser::Load(file, &oem_manifest))
-    return;
-
-  machine_info_[kOemDeviceRequisitionKey] =
-      oem_manifest.device_requisition;
-  machine_flags_[kOemIsEnterpriseManagedKey] =
-      oem_manifest.enterprise_managed;
-  machine_flags_[kOemCanExitEnterpriseEnrollmentKey] =
-      oem_manifest.can_exit_enrollment;
-  machine_flags_[kOemKeyboardDrivenOobeKey] =
-      oem_manifest.keyboard_driven_oobe;
-}
-
-StatisticsProviderImpl* StatisticsProviderImpl::GetInstance() {
-  return Singleton<StatisticsProviderImpl,
-                   DefaultSingletonTraits<StatisticsProviderImpl> >::get();
-}
-
-// The stub StatisticsProvider implementation used on Linux desktop.
-class StatisticsProviderStubImpl : public StatisticsProviderImpl {
- public:
-  // StatisticsProvider implementation:
-  virtual void Init() OVERRIDE {}
-
-  virtual void StartLoadingMachineStatistics() OVERRIDE {}
-
-  virtual bool GetMachineStatistic(const std::string& name,
-                                   std::string* result) OVERRIDE {
-    if (name == "CHROMEOS_RELEASE_BOARD") {
-      // Note: syncer::GetSessionNameSynchronously() also uses the mechanism
-      // below to determine the CrOs release board. However, it cannot include
-      // statistics_provider.h and use this method because of the mutual
-      // dependency that creates between sync.gyp:sync and chrome.gyp:browser.
-      // TODO(rsimha): Update syncer::GetSessionNameSynchronously() if this code
-      // is ever moved into base/. See http://crbug.com/126732.
-      const CommandLine* command_line = CommandLine::ForCurrentProcess();
-      if (command_line->HasSwitch(chromeos::switches::kChromeOSReleaseBoard)) {
-        *result = command_line->
-            GetSwitchValueASCII(chromeos::switches::kChromeOSReleaseBoard);
-        return true;
-      }
-    }
-    return false;
-  }
-
-  virtual void LoadOemManifest() OVERRIDE {
-    CommandLine* command_line = CommandLine::ForCurrentProcess();
-    if (!command_line->HasSwitch(switches::kAppOemManifestFile))
-      return;
-
-    LoadOemManifestFromFile(
-        command_line->GetSwitchValuePath(switches::kAppOemManifestFile));
-  }
-
-  static StatisticsProviderStubImpl* GetInstance() {
-    return Singleton<StatisticsProviderStubImpl,
-        DefaultSingletonTraits<StatisticsProviderStubImpl> >::get();
-  }
-
- private:
-  friend struct DefaultSingletonTraits<StatisticsProviderStubImpl>;
-
-  StatisticsProviderStubImpl() {
-  }
-
-  DISALLOW_COPY_AND_ASSIGN(StatisticsProviderStubImpl);
-};
-
-StatisticsProvider* StatisticsProvider::GetInstance() {
-  if (base::SysInfo::IsRunningOnChromeOS()) {
-    return StatisticsProviderImpl::GetInstance();
-  } else {
-    return StatisticsProviderStubImpl::GetInstance();
-  }
-}
-
-}  // namespace system
-}  // namespace chromeos