chrome/browser/performance_monitor/key_builder.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/performance_monitor/key_builder.h"
   6
   7 #include "base/format_macros.h"
   8 #include "base/logging.h"
   9 #include "base/strings/string_number_conversions.h"
  10 #include "base/strings/string_split.h"
  11 #include "base/strings/stringprintf.h"
  12
  13 namespace performance_monitor {
  14
  15 namespace {
  16
  17 const char kDelimiter = '!';
  18
  19 // These values are used as the portion of the generated key which represents
  20 // the event/metric type when inserting values in the database. We use an ASCII
  21 // character as a mapping, rather than the enum of the metric or event itself,
  22 // so that we can edit the MetricType and EventType enums as desired, without
  23 // worrying about the integrity of the database.
  24 //
  25 // Once a character mapping has been set for a metric or event, do not change
  26 // its value! New character mappings should be greater than 34 (ASCII characters
  27 // below 32 have meaning, 33 is '!' - the database delimiter, and 34 is reserved
  28 // for the 'Undefined' character mapping). Do not repeat values within the
  29 // metric/event sets (repeated values between sets are okay).
  30 //
  31 // Deprecated keys: A key which is deprecated should be clearly marked as such,
  32 // and its use discontinued. Do not remove the key from the listing! (Otherwise,
  33 // a new metric may take its key and think the old data belongs to it.)
  34
  35 enum MetricKeyChar {
  36 METRIC_UNDEFINED_KEY_CHAR = 34,
  37 METRIC_CPU_USAGE_KEY_CHAR = 35,
  38 METRIC_PRIVATE_MEMORY_USAGE_KEY_CHAR = 36,
  39 METRIC_SHARED_MEMORY_USAGE_KEY_CHAR = 37,
  40 METRIC_STARTUP_TIME_KEY_CHAR = 38,
  41 METRIC_TEST_STARTUP_TIME_KEY_CHAR = 39,
  42 METRIC_SESSION_RESTORE_TIME_KEY_CHAR = 40,
  43 METRIC_PAGE_LOAD_TIME_KEY_CHAR = 41,
  44 METRIC_NETWORK_BYTES_READ_KEY_CHAR = 42,
  45 METRIC_NUMBER_OF_METRICS_KEY_CHAR = 255,
  46 };
  47
  48 enum EventKeyChar {
  49 EVENT_UNDEFINED_KEY_CHAR = 34,
  50 EVENT_EXTENSION_INSTALL_KEY_CHAR = 35,
  51 EVENT_EXTENSION_UNINSTALL_KEY_CHAR = 36,
  52 EVENT_EXTENSION_UPDATE_KEY_CHAR = 37,
  53 EVENT_EXTENSION_ENABLE_KEY_CHAR = 38,
  54 EVENT_EXTENSION_DISABLE_KEY_CHAR = 39,
  55 EVENT_CHROME_UPDATE_KEY_CHAR = 40,
  56 EVENT_RENDERER_HANG_KEY_CHAR = 41,
  57 EVENT_RENDERER_CRASH_KEY_CHAR = 42,
  58 EVENT_RENDERER_KILLED_KEY_CHAR = 43,
  59 EVENT_UNCLEAN_EXIT_KEY_CHAR = 44,
  60 EVENT_NUMBER_OF_EVENTS_KEY_CHAR = 255,
  61 };
  62
  63 // The position of different elements in the key for the event db.
  64 enum EventKeyPosition {
  65   EVENT_TIME,  // The time the event was generated.
  66   EVENT_TYPE  // The type of event.
  67 };
  68
  69 // The position of different elements in the key for the recent db.
  70 enum RecentKeyPosition {
  71   RECENT_TIME,  // The time the stat was gathered.
  72   RECENT_TYPE,  // The unique identifier for the type of metric gathered.
  73   RECENT_ACTIVITY  // The unique identifier for the activity.
  74 };
  75
  76 // The position of different elements in the key for the max value db.
  77 enum MaxValueKeyPosition {
  78   MAX_VALUE_TYPE,  // The unique identifier for the type of metric gathered.
  79   MAX_VALUE_ACTIVITY  // The unique identifier for the activity.
  80 };
  81
  82 // The position of different elements in the key for a metric db.
  83 enum MetricKeyPosition {
  84   METRIC_TYPE,  // The unique identifier for the metric.
  85   METRIC_TIME,  // The time the stat was gathered.
  86   METRIC_ACTIVITY  // The unique identifier for the activity.
  87 };
  88
  89 }  // namespace
  90
  91 RecentKey::RecentKey(const std::string& recent_time,
  92                      MetricType recent_type,
  93                      const std::string& recent_activity)
  94     : time(recent_time), type(recent_type), activity(recent_activity) {
  95 }
  96
  97 RecentKey::~RecentKey() {
  98 }
  99
 100 MetricKey::MetricKey(const std::string& metric_time,
 101                      MetricType metric_type,
 102                      const std::string& metric_activity)
 103     : time(metric_time), type(metric_type), activity(metric_activity) {
 104 }
 105
 106 MetricKey::~MetricKey() {
 107 }
 108
 109 KeyBuilder::KeyBuilder() {
 110   PopulateKeyMaps();
 111 }
 112
 113 KeyBuilder::~KeyBuilder() {
 114 }
 115
 116 void KeyBuilder::PopulateKeyMaps() {
 117   // Hard-code the generation of the map between event types and event key
 118   // character mappings.
 119   event_type_to_event_key_char_[EVENT_UNDEFINED] = EVENT_UNDEFINED_KEY_CHAR;
 120   event_type_to_event_key_char_[EVENT_EXTENSION_INSTALL] =
 121       EVENT_EXTENSION_INSTALL_KEY_CHAR;
 122   event_type_to_event_key_char_[EVENT_EXTENSION_UNINSTALL] =
 123       EVENT_EXTENSION_UNINSTALL_KEY_CHAR;
 124   event_type_to_event_key_char_[EVENT_EXTENSION_UPDATE] =
 125       EVENT_EXTENSION_UPDATE_KEY_CHAR;
 126   event_type_to_event_key_char_[EVENT_EXTENSION_ENABLE] =
 127       EVENT_EXTENSION_ENABLE_KEY_CHAR;
 128   event_type_to_event_key_char_[EVENT_EXTENSION_DISABLE] =
 129       EVENT_EXTENSION_DISABLE_KEY_CHAR;
 130   event_type_to_event_key_char_[EVENT_RENDERER_HANG] =
 131       EVENT_RENDERER_HANG_KEY_CHAR;
 132   event_type_to_event_key_char_[EVENT_RENDERER_CRASH] =
 133       EVENT_RENDERER_CRASH_KEY_CHAR;
 134   event_type_to_event_key_char_[EVENT_RENDERER_KILLED] =
 135       EVENT_RENDERER_KILLED_KEY_CHAR;
 136   event_type_to_event_key_char_[EVENT_UNCLEAN_EXIT] =
 137       EVENT_UNCLEAN_EXIT_KEY_CHAR;
 138   event_type_to_event_key_char_[EVENT_NUMBER_OF_EVENTS] =
 139       EVENT_NUMBER_OF_EVENTS_KEY_CHAR;
 140   DCHECK(event_type_to_event_key_char_.size() == EVENT_NUMBER_OF_EVENTS);
 141
 142   // Generate the reverse map for easy look-up between event character mappings
 143   // and event types.
 144   for (int i = static_cast<int>(EVENT_UNDEFINED);
 145        i <= static_cast<int>(EVENT_NUMBER_OF_EVENTS); ++i) {
 146     event_key_char_to_event_type_[event_type_to_event_key_char_[
 147         static_cast<EventType>(i)]] = static_cast<EventType>(i);
 148   }
 149
 150   // Repeat the process for metrics.
 151   metric_type_to_metric_key_char_[METRIC_UNDEFINED] = METRIC_UNDEFINED_KEY_CHAR;
 152   metric_type_to_metric_key_char_[METRIC_CPU_USAGE] = METRIC_CPU_USAGE_KEY_CHAR;
 153   metric_type_to_metric_key_char_[METRIC_PRIVATE_MEMORY_USAGE] =
 154       METRIC_PRIVATE_MEMORY_USAGE_KEY_CHAR;
 155   metric_type_to_metric_key_char_[METRIC_SHARED_MEMORY_USAGE] =
 156       METRIC_SHARED_MEMORY_USAGE_KEY_CHAR;
 157   metric_type_to_metric_key_char_[METRIC_STARTUP_TIME] =
 158       METRIC_STARTUP_TIME_KEY_CHAR;
 159   metric_type_to_metric_key_char_[METRIC_TEST_STARTUP_TIME] =
 160       METRIC_TEST_STARTUP_TIME_KEY_CHAR;
 161   metric_type_to_metric_key_char_[METRIC_PAGE_LOAD_TIME] =
 162       METRIC_PAGE_LOAD_TIME_KEY_CHAR;
 163   metric_type_to_metric_key_char_[METRIC_NETWORK_BYTES_READ] =
 164       METRIC_NETWORK_BYTES_READ_KEY_CHAR;
 165   metric_type_to_metric_key_char_[METRIC_NUMBER_OF_METRICS] =
 166       METRIC_NUMBER_OF_METRICS_KEY_CHAR;
 167   DCHECK(metric_type_to_metric_key_char_.size() == METRIC_NUMBER_OF_METRICS);
 168
 169   for (int i = static_cast<int>(METRIC_UNDEFINED);
 170        i <= static_cast<int>(METRIC_NUMBER_OF_METRICS); ++i) {
 171     metric_key_char_to_metric_type_[metric_type_to_metric_key_char_[
 172         static_cast<MetricType>(i)]] = static_cast<MetricType>(i);
 173   }
 174 }
 175
 176 std::string KeyBuilder::CreateActiveIntervalKey(const base::Time& time) {
 177     return base::StringPrintf("%016" PRId64, time.ToInternalValue());
 178 }
 179
 180 std::string KeyBuilder::CreateMetricKey(const base::Time& time,
 181                                           const MetricType type,
 182                                           const std::string& activity) {
 183   return base::StringPrintf("%c%c%016" PRId64 "%c%s",
 184                             metric_type_to_metric_key_char_[type],
 185                             kDelimiter, time.ToInternalValue(),
 186                             kDelimiter, activity.c_str());
 187 }
 188
 189 std::string KeyBuilder::CreateEventKey(const base::Time& time,
 190                                          const EventType type) {
 191   return base::StringPrintf("%016" PRId64 "%c%c",
 192                             time.ToInternalValue(), kDelimiter,
 193                             event_type_to_event_key_char_[type]);
 194 }
 195
 196 std::string KeyBuilder::CreateRecentKey(const base::Time& time,
 197                                           const MetricType type,
 198                                           const std::string& activity) {
 199   return base::StringPrintf("%016" PRId64 "%c%c%c%s",
 200                             time.ToInternalValue(),
 201                             kDelimiter, metric_type_to_metric_key_char_[type],
 202                             kDelimiter, activity.c_str());
 203 }
 204
 205 std::string KeyBuilder::CreateRecentMapKey(const MetricType type,
 206                                              const std::string& activity) {
 207   return base::StringPrintf("%s%c%c",
 208                             activity.c_str(),
 209                             kDelimiter, metric_type_to_metric_key_char_[type]);
 210 }
 211
 212 std::string KeyBuilder::CreateMaxValueKey(const MetricType type,
 213                                             const std::string& activity) {
 214   return base::StringPrintf("%c%c%s",
 215                             metric_type_to_metric_key_char_[type],
 216                             kDelimiter, activity.c_str());
 217 }
 218
 219 EventType KeyBuilder::EventKeyToEventType(const std::string& event_key) {
 220   std::vector<std::string> split;
 221   base::SplitString(event_key, kDelimiter, &split);
 222   DCHECK(split[EVENT_TYPE].size() == 1);
 223   return event_key_char_to_event_type_[
 224       static_cast<int>(split[EVENT_TYPE].at(0))];
 225 }
 226
 227 RecentKey KeyBuilder::SplitRecentKey(const std::string& key) {
 228   std::vector<std::string> split;
 229   base::SplitString(key, kDelimiter, &split);
 230   DCHECK(split[RECENT_TYPE].size() == 1);
 231   return RecentKey(split[RECENT_TIME],
 232                    metric_key_char_to_metric_type_[
 233                        static_cast<int>(split[RECENT_TYPE].at(0))],
 234                    split[RECENT_ACTIVITY]);
 235 }
 236
 237 MetricKey KeyBuilder::SplitMetricKey(const std::string& key) {
 238   std::vector<std::string> split;
 239   base::SplitString(key, kDelimiter, &split);
 240   DCHECK(split[METRIC_TYPE].size() == 1);
 241   return MetricKey(split[METRIC_TIME],
 242                    metric_key_char_to_metric_type_[
 243                        static_cast<int>(split[METRIC_TYPE].at(0))],
 244                    split[METRIC_ACTIVITY]);
 245 }
 246
 247 }  // namespace performance_monitor