Clean up atoms.proto

changes are:
1) for pushed atoms, use attribution node in place of uid when
appropriate
2) name changes to be more consistent

Bug: 73823969
Test: manual test
Change-Id: Iacf7186dbd7a2282f7fe481f43dbbf92e1165b47
diff --git a/cmds/statsd/benchmark/metric_util.cpp b/cmds/statsd/benchmark/metric_util.cpp
index b67764b..50b05cd 100644
--- a/cmds/statsd/benchmark/metric_util.cpp
+++ b/cmds/statsd/benchmark/metric_util.cpp
@@ -127,25 +127,25 @@
 }
 
 AtomMatcher CreateActivityForegroundStateChangedAtomMatcher(
-    const string& name, ActivityForegroundStateChanged::Activity activity) {
+    const string& name, ActivityForegroundStateChanged::State state) {
     AtomMatcher atom_matcher;
     atom_matcher.set_id(StringToId(name));
     auto simple_atom_matcher = atom_matcher.mutable_simple_atom_matcher();
     simple_atom_matcher->set_atom_id(android::util::ACTIVITY_FOREGROUND_STATE_CHANGED);
     auto field_value_matcher = simple_atom_matcher->add_field_value_matcher();
     field_value_matcher->set_field(4);  // Activity field.
-    field_value_matcher->set_eq_int(activity);
+    field_value_matcher->set_eq_int(state);
     return atom_matcher;
 }
 
 AtomMatcher CreateMoveToBackgroundAtomMatcher() {
     return CreateActivityForegroundStateChangedAtomMatcher(
-        "MoveToBackground", ActivityForegroundStateChanged::MOVE_TO_BACKGROUND);
+        "MoveToBackground", ActivityForegroundStateChanged::BACKGROUND);
 }
 
 AtomMatcher CreateMoveToForegroundAtomMatcher() {
     return CreateActivityForegroundStateChangedAtomMatcher(
-        "MoveToForeground", ActivityForegroundStateChanged::MOVE_TO_FOREGROUND);
+        "MoveToForeground", ActivityForegroundStateChanged::FOREGROUND);
 }
 
 Predicate CreateScheduledJobPredicate() {
@@ -315,25 +315,25 @@
 }
 
 std::unique_ptr<LogEvent> CreateActivityForegroundStateChangedEvent(
-    const int uid, const ActivityForegroundStateChanged::Activity activity, uint64_t timestampNs) {
+    const int uid, const ActivityForegroundStateChanged::State state, uint64_t timestampNs) {
     auto event = std::make_unique<LogEvent>(
         android::util::ACTIVITY_FOREGROUND_STATE_CHANGED, timestampNs);
     event->write(uid);
     event->write("pkg_name");
     event->write("class_name");
-    event->write(activity);
+    event->write(state);
     event->init();
     return event;
 }
 
 std::unique_ptr<LogEvent> CreateMoveToBackgroundEvent(const int uid, uint64_t timestampNs) {
     return CreateActivityForegroundStateChangedEvent(
-        uid, ActivityForegroundStateChanged::MOVE_TO_BACKGROUND, timestampNs);
+        uid, ActivityForegroundStateChanged::BACKGROUND, timestampNs);
 }
 
 std::unique_ptr<LogEvent> CreateMoveToForegroundEvent(const int uid, uint64_t timestampNs) {
     return CreateActivityForegroundStateChangedEvent(
-        uid, ActivityForegroundStateChanged::MOVE_TO_FOREGROUND, timestampNs);
+        uid, ActivityForegroundStateChanged::FOREGROUND, timestampNs);
 }
 
 std::unique_ptr<LogEvent> CreateSyncStateChangedEvent(
diff --git a/cmds/statsd/src/atoms.proto b/cmds/statsd/src/atoms.proto
index cfb9d87..7fe8e62 100644
--- a/cmds/statsd/src/atoms.proto
+++ b/cmds/statsd/src/atoms.proto
@@ -16,7 +16,6 @@
 
 syntax = "proto2";
 
-// TODO: Not the right package and class name
 package android.os.statsd;
 option java_package = "com.android.os";
 option java_outer_classname = "AtomsProto";
@@ -49,7 +48,7 @@
     oneof pushed {
         // For StatsLog reasons, 1 is illegal and will not work. Must start at 2.
         BleScanStateChanged ble_scan_state_changed = 2;
-        // TODO: 3 is blank, but need not be
+        // 3 is available for use
         BleScanResultReceived ble_scan_result_received = 4;
         SensorStateChanged sensor_state_changed = 5;
         GpsScanStateChanged gps_scan_state_changed = 6;
@@ -60,12 +59,12 @@
         LongPartialWakelockStateChanged long_partial_wakelock_state_changed = 11;
         MobileRadioPowerStateChanged mobile_radio_power_state_changed = 12;
         WifiRadioPowerStateChanged wifi_radio_power_state_changed = 13;
-        // TODO: 14-19 are blank, but need not be
+        // 14 - 19 are available
         BatterySaverModeStateChanged battery_saver_mode_state_changed = 20;
         DeviceIdleModeStateChanged device_idle_mode_state_changed = 21;
         DeviceIdlingModeStateChanged device_idling_mode_state_changed = 22;
         AudioStateChanged audio_state_changed = 23;
-        MediaCodecActivityChanged media_codec_activity_changed = 24;
+        MediaCodecStateChanged media_codec_state_changed = 24;
         CameraStateChanged camera_state_changed = 25;
         FlashlightStateChanged flashlight_state_changed = 26;
         UidProcessStateChanged uid_process_state_changed = 27;
@@ -74,8 +73,7 @@
         BatteryLevelChanged battery_level_changed = 30;
         ChargingStateChanged charging_state_changed = 31;
         PluggedStateChanged plugged_state_changed = 32;
-        // TODO: 33 is blank, but is available for use.
-        DeviceOnStatusChanged device_on_status_changed = 34;
+        // 33 - 34 are available
         WakeupAlarmOccurred wakeup_alarm_occurred = 35;
         KernelWakeupReported kernel_wakeup_reported = 36;
         WifiLockStateChanged wifi_lock_state_changed = 37;
@@ -86,12 +84,12 @@
         ActivityForegroundStateChanged activity_foreground_state_changed = 42;
         IsolatedUidChanged isolated_uid_changed = 43;
         PacketWakeupOccurred packet_wakeup_occurred = 44;
-        DropboxErrorChanged dropbox_error_changed = 45;
+        // 45 is available
         AnomalyDetected anomaly_detected = 46;
         AppBreadcrumbReported app_breadcrumb_reported = 47;
-        AppStartChanged app_start_changed = 48;
-        AppStartCancelChanged app_start_cancel_changed = 49;
-        AppStartFullyDrawnChanged app_start_fully_drawn_changed = 50;
+        AppStartOccurred app_start_occurred = 48;
+        AppStartCanceled app_start_canceled = 49;
+        AppStartFullyDrawn app_start_fully_drawn = 50;
         LmkKillOccurred lmk_kill_occurred = 51;
         PictureInPictureStateChanged picture_in_picture_state_changed = 52;
         WifiMulticastLockStateChanged wifi_multicast_lock_state_changed = 53;
@@ -106,7 +104,7 @@
         KeyguardStateChanged keyguard_state_changed = 62;
         KeyguardBouncerStateChanged keyguard_bouncer_state_changed = 63;
         KeyguardBouncerPasswordEntered keyguard_bouncer_password_entered = 64;
-        AppDied app_died=65;
+        AppDied app_died = 65;
         ResourceConfigurationChanged resource_configuration_changed = 66;
         BluetoothEnabledStateChanged bluetooth_enabled_state_changed = 67;
         BluetoothConnectionStateChanged bluetooth_connection_state_changed = 68;
@@ -119,6 +117,12 @@
         MobileConnectionStateChanged mobile_connection_state_changed = 75;
         MobileRadioTechnologyChanged mobile_radio_technology_changed = 76;
         UsbDeviceAttached usb_device_attached = 77;
+        AppCrashOccurred app_crash_occurred = 78;
+        ANROccurred anr_occurred = 79;
+        WTFOccurred wtf_occurred = 80;
+        LowMemReported low_mem_reported = 81;
+
+
     }
 
     // Pulled events will start at field 10000.
@@ -134,7 +138,7 @@
         CpuTimePerFreq cpu_time_per_freq = 10008;
         CpuTimePerUid cpu_time_per_uid = 10009;
         CpuTimePerUidFreq cpu_time_per_uid_freq = 10010;
-        WifiActivityEnergyInfo wifi_activity_energy_info = 10011;
+        WifiActivityInfo wifi_activity_info = 10011;
         ModemActivityInfo modem_activity_info = 10012;
         BluetoothActivityInfo bluetooth_activity_info = 10007;
         ProcessMemoryState process_memory_state = 10013;
@@ -224,21 +228,19 @@
  *   frameworks/base/services/core/java/com/android/server/am/BatteryStatsService.java
  */
 message ProcessLifeCycleStateChanged {
-    // TODO: should be a string tagged w/ uid annotation
     optional int32 uid = 1 [(is_uid) = true];
 
     // The process name (usually same as the app name).
-    optional string name = 2;
+    optional string process_name = 2;
 
     // What lifecycle state the process changed to.
     // This enum is specific to atoms.proto.
-    enum Event {
-        PROCESS_FINISHED = 0;
-        PROCESS_STARTED = 1;
-        PROCESS_CRASHED = 2;
-        PROCESS_ANRED = 3;
+    enum State {
+        FINISHED = 0;
+        STARTED = 1;
+        CRASHED = 2;
     }
-    optional Event event = 3;
+    optional State state = 3;
 }
 
 /**
@@ -247,7 +249,6 @@
  * Logged from:
  *   packages/apps/Bluetooth/src/com/android/bluetooth/gatt/AppScanStats.java
  */
-// TODO: Consider changing to tracking per-scanner-id (log from AppScanStats).
 message BleScanStateChanged {
     repeated AttributionNode attribution_node = 1;
 
@@ -278,7 +279,7 @@
     repeated AttributionNode attribution_node = 1;
 
     // Number of ble scan results returned.
-    optional int32 num_of_results = 2;
+    optional int32 num_results = 2;
 }
 
 /**
@@ -290,7 +291,6 @@
 message SensorStateChanged {
     repeated AttributionNode attribution_node = 1;
 
-    // TODO: Is there a way to get the actual name of the sensor?
     // The id (int) of the sensor.
     optional int32 sensor_id = 2;
 
@@ -329,7 +329,7 @@
     repeated AttributionNode attribution_node = 1;
 
     // Name of the sync (as named in the app). Can be chosen at run-time.
-    optional string name = 2;
+    optional string sync_name = 2;
 
     enum State {
         OFF = 0;
@@ -348,7 +348,7 @@
     repeated AttributionNode attribution_node = 1;
 
     // Name of the job (as named in the app)
-    optional string name = 2;
+    optional string job_name = 2;
 
     enum State {
         FINISHED = 0;
@@ -387,7 +387,7 @@
  * Logged from:
  *   frameworks/base/services/core/java/com/android/server/am/BatteryStatsService.java
  */
-message MediaCodecActivityChanged {
+message MediaCodecStateChanged {
     repeated AttributionNode attribution_node = 1;
 
     enum State {
@@ -561,22 +561,6 @@
     optional android.os.BatteryPluggedStateEnum state = 1;
 }
 
-// TODO: Define this more precisely.
-// TODO: Log the ON state somewhere. It isn't currently logged anywhere.
-/**
- * Logs when the device turns off or on.
- *
- * Logged from:
- *   frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java
- */
-message DeviceOnStatusChanged {
-    enum State {
-        OFF = 0;
-        ON = 1;
-    }
-    optional State state = 1;
-}
-
 /**
  * Logs when an app's wakeup alarm fires.
  *
@@ -598,8 +582,7 @@
  *   frameworks/base/core/java/com/android/internal/os/BatteryStatsImpl.java
  */
 message MobileRadioPowerStateChanged {
-    // TODO: Add attribution instead of uid?
-    optional int32 uid = 1 [(is_uid) = true];
+    repeated AttributionNode attribution_node = 1;
 
     // Power state, from frameworks/base/core/proto/android/telephony/enums.proto.
     optional android.telephony.DataConnectionPowerStateEnum state = 2;
@@ -613,8 +596,7 @@
  *   frameworks/base/core/java/com/android/internal/os/BatteryStatsImpl.java
  */
 message WifiRadioPowerStateChanged {
-    // TODO: Add attribution instead of uid?
-    optional int32 uid = 1 [(is_uid) = true];
+    repeated AttributionNode attribution_node = 1;
 
     // Power state, from frameworks/base/core/proto/android/telephony/enums.proto.
     optional android.telephony.DataConnectionPowerStateEnum state = 2;
@@ -1154,7 +1136,6 @@
 message DaveyOccurred {
     // The UID that logged this atom.
     optional int32 uid = 1 [(is_uid) = true];
-    ;
 
     // Amount of time it took to render the frame. Should be >=700ms.
     optional int64 jank_duration_millis = 2;
@@ -1221,42 +1202,70 @@
     optional string pkg_name = 2;
     optional string class_name = 3;
 
-    enum Activity {
-        MOVE_TO_BACKGROUND = 0;
-        MOVE_TO_FOREGROUND = 1;
+    enum State {
+        BACKGROUND = 0;
+        FOREGROUND = 1;
     }
-    optional Activity activity = 4;
+    optional State state = 4;
 }
 
 /**
- * Logs when an error is written to dropbox.
+ * Logs when an app crashes.
  * Logged from:
  *      frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java
  */
-message DropboxErrorChanged {
-    // The uid if available. -1 means not available.
+message AppCrashOccurred {
     optional int32 uid = 1 [(is_uid) = true];
 
-    // Tag used when recording this error to dropbox. Contains data_ or system_ prefix.
-    optional string tag = 2;
+    optional string event_type = 2;
 
     // The name of the process.
+    // system_server if it is not by an app
     optional string process_name = 3;
 
     // The pid if available. -1 means not available.
     optional sint32 pid = 4;
+}
 
-    // 1 indicates is instant app. -1 indicates Not applicable.
-    optional sint32 is_instant_app = 5;
+/**
+ * Logs when a WTF (What a Terrible Failure) happened.
+ * Logged from:
+ *      frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java
+ */
+message WTFOccurred {
+    optional int32 uid = 1 [(is_uid) = true];
 
-    // The activity name if available.
-    optional string activity_name = 6;
+    optional string tag = 2;
 
-    // The package name if available.
-    optional string package_name = 7;
+    // The name of the process.
+    // system_server if it is not by an app
+    optional string process_name = 3;
 
-    // 1 indicates in foreground. -1 indicates not available.
-    optional sint32 is_foreground = 8;
+    // The pid if available. -1 means not available.
+    optional sint32 pid = 4;
+}
+
+/**
+ * Logs when system server reports low memory.
+ * Logged from:
+ *      frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java
+ */
+message LowMemReported {
+}
+
+/**
+ * Logs when an app ANR (App Not Responding) occurs.
+ * Logged from:
+ *      frameworks/base/services/core/java/com/android/server/am/AppErrors.java
+ */
+message ANROccurred {
+    optional int32 uid = 1 [(is_uid) = true];
+
+    optional string process_name = 2;
+
+    optional string short_component_name = 3;
+
+    optional string reason = 4;
 }
 
 /*
@@ -1299,7 +1308,7 @@
     optional int64 alert_id = 3;
 }
 
-message AppStartChanged {
+message AppStartOccurred {
     // The uid if available. -1 means not available.
     optional int32 uid = 1 [(is_uid) = true];
 
@@ -1307,7 +1316,7 @@
     optional string pkg_name = 2;
 
     enum TransitionType {
-        APP_START_TRANSITION_TYPE_UNKNOWN = 0;
+        UNKNOWN = 0;
         WARM = 1;
         HOT = 2;
         COLD = 3;
@@ -1346,7 +1355,7 @@
     optional int32 package_optimization_compilation_reason = 15;
 }
 
-message AppStartCancelChanged {
+message AppStartCanceled {
     // The uid if available. -1 means not available.
     optional int32 uid = 1 [(is_uid) = true];
 
@@ -1354,7 +1363,7 @@
     optional string pkg_name = 2;
 
     enum TransitionType {
-        APP_START_TRANSITION_TYPE_UNKNOWN = 0;
+        UNKNOWN = 0;
         WARM = 1;
         HOT = 2;
         COLD = 3;
@@ -1366,7 +1375,7 @@
     optional string activity_name = 4;
 }
 
-message AppStartFullyDrawnChanged {
+message AppStartFullyDrawn {
     // The uid if available. -1 means not available.
     optional int32 uid = 1 [(is_uid) = true];
 
@@ -1374,7 +1383,7 @@
     optional string pkg_name = 2;
 
     enum TransitionType {
-        APP_START_TRANSITION_TYPE_UNKNOWN = 0;
+        UNKNOWN = 0;
         WITH_BUNDLE = 1;
         WITHOUT_BUNDLE = 2;
     }
@@ -1459,8 +1468,8 @@
  *   frameworks/base/core/java/com/android/internal/os/BatteryStatsImpl.java
  */
 message IsolatedUidChanged {
-    // NOTE: DO NOT annotate uid field in this atom. This atom is specially handled in statsd.
     // The host UID. Generally, we should attribute metrics from the isolated uid to the host uid.
+    // NOTE: DO NOT annotate uid field in this atom. This atom is specially handled in statsd.
     optional int32 parent_uid = 1;
 
     optional int32 isolated_uid = 2;
@@ -1621,9 +1630,8 @@
 message WifiBytesTransferByFgBg {
     optional int32 uid = 1 [(is_uid) = true];
 
-    // 1 denotes foreground and 0 denotes background. This is called Set in
-    // NetworkStats.
-    optional int32 is_foreground = 2;
+    // 1 denotes foreground and 0 denotes background. This is called Set in NetworkStats.
+    optional bool is_foreground = 2;
 
     optional int64 rx_bytes = 3;
 
@@ -1663,7 +1671,7 @@
 
     // 1 denotes foreground and 0 denotes background. This is called Set in
     // NetworkStats.
-    optional int32 is_foreground = 2;
+    optional bool is_foreground = 2;
 
     optional int64 rx_bytes = 3;
 
@@ -1760,7 +1768,7 @@
 /**
  * Pulls Wifi Controller Activity Energy Info
  */
-message WifiActivityEnergyInfo {
+message WifiActivityInfo {
     // timestamp(wall clock) of record creation
     optional uint64 timestamp_millis = 1;
     // stack reported state
diff --git a/cmds/statsd/src/external/StatsPullerManagerImpl.cpp b/cmds/statsd/src/external/StatsPullerManagerImpl.cpp
index 0e23bf0..2f0e885 100644
--- a/cmds/statsd/src/external/StatsPullerManagerImpl.cpp
+++ b/cmds/statsd/src/external/StatsPullerManagerImpl.cpp
@@ -120,11 +120,11 @@
           1 * NS_PER_SEC,
           new StatsCompanionServicePuller(android::util::CPU_CLUSTER_TIME)}},
         // wifi_activity_energy_info
-        {android::util::WIFI_ACTIVITY_ENERGY_INFO,
+        {android::util::WIFI_ACTIVITY_INFO,
          {{},
           {},
           1 * NS_PER_SEC,
-          new StatsCompanionServicePuller(android::util::WIFI_ACTIVITY_ENERGY_INFO)}},
+          new StatsCompanionServicePuller(android::util::WIFI_ACTIVITY_INFO)}},
         // modem_activity_info
         {android::util::MODEM_ACTIVITY_INFO,
          {{},
diff --git a/cmds/statsd/tests/FieldValue_test.cpp b/cmds/statsd/tests/FieldValue_test.cpp
index 73e7c44..5a6aba6 100644
--- a/cmds/statsd/tests/FieldValue_test.cpp
+++ b/cmds/statsd/tests/FieldValue_test.cpp
@@ -356,7 +356,7 @@
     EXPECT_EQ("location1", atom.attribution_node(0).tag());
     EXPECT_EQ(2222, atom.attribution_node(1).uid());
     EXPECT_EQ("location2", atom.attribution_node(1).tag());
-    EXPECT_EQ(999, atom.num_of_results());
+    EXPECT_EQ(999, atom.num_results());
 }
 
 
diff --git a/cmds/statsd/tests/e2e/GaugeMetric_e2e_push_test.cpp b/cmds/statsd/tests/e2e/GaugeMetric_e2e_push_test.cpp
index 2e6a0f0..2b91324 100644
--- a/cmds/statsd/tests/e2e/GaugeMetric_e2e_push_test.cpp
+++ b/cmds/statsd/tests/e2e/GaugeMetric_e2e_push_test.cpp
@@ -34,7 +34,7 @@
     *config.add_atom_matcher() = CreateMoveToBackgroundAtomMatcher();
     *config.add_atom_matcher() = CreateMoveToForegroundAtomMatcher();
 
-    auto atomMatcher = CreateSimpleAtomMatcher("", android::util::APP_START_CHANGED);
+    auto atomMatcher = CreateSimpleAtomMatcher("", android::util::APP_START_OCCURRED);
     *config.add_atom_matcher() = atomMatcher;
 
     auto isInBackgroundPredicate = CreateIsInBackgroundPredicate();
@@ -49,18 +49,18 @@
     gaugeMetric->mutable_gauge_fields_filter()->set_include_all(false);
     gaugeMetric->set_sampling_type(sampling_type);
     auto fieldMatcher = gaugeMetric->mutable_gauge_fields_filter()->mutable_fields();
-    fieldMatcher->set_field(android::util::APP_START_CHANGED);
+    fieldMatcher->set_field(android::util::APP_START_OCCURRED);
     fieldMatcher->add_child()->set_field(3);  // type (enum)
     fieldMatcher->add_child()->set_field(4);  // activity_name(str)
     fieldMatcher->add_child()->set_field(7);  // activity_start_msec(int64)
     *gaugeMetric->mutable_dimensions_in_what() =
-        CreateDimensions(android::util::APP_START_CHANGED, {1 /* uid field */ });
+        CreateDimensions(android::util::APP_START_OCCURRED, {1 /* uid field */ });
     gaugeMetric->set_bucket(FIVE_MINUTES);
 
     auto links = gaugeMetric->add_links();
     links->set_condition(isInBackgroundPredicate.id());
     auto dimensionWhat = links->mutable_fields_in_what();
-    dimensionWhat->set_field(android::util::APP_START_CHANGED);
+    dimensionWhat->set_field(android::util::APP_START_OCCURRED);
     dimensionWhat->add_child()->set_field(1);  // uid field.
     auto dimensionCondition = links->mutable_fields_in_condition();
     dimensionCondition->set_field(android::util::ACTIVITY_FOREGROUND_STATE_CHANGED);
@@ -68,12 +68,12 @@
     return config;
 }
 
-std::unique_ptr<LogEvent> CreateAppStartChangedEvent(
-    const int uid, const string& pkg_name, AppStartChanged::TransitionType type,
+std::unique_ptr<LogEvent> CreateAppStartOccurredEvent(
+    const int uid, const string& pkg_name, AppStartOccurred::TransitionType type,
     const string& activity_name, const string& calling_pkg_name, const bool is_instant_app,
     int64_t activity_start_msec, uint64_t timestampNs) {
     auto logEvent = std::make_unique<LogEvent>(
-        android::util::APP_START_CHANGED, timestampNs);
+        android::util::APP_START_OCCURRED, timestampNs);
     logEvent->write(uid);
     logEvent->write(pkg_name);
     logEvent->write(type);
@@ -112,32 +112,32 @@
             appUid1, bucketStartTimeNs + 2 * bucketSizeNs + 100));
 
 
-        events.push_back(CreateAppStartChangedEvent(
-            appUid1, "app1", AppStartChanged::WARM, "activity_name1", "calling_pkg_name1",
+        events.push_back(CreateAppStartOccurredEvent(
+            appUid1, "app1", AppStartOccurred::WARM, "activity_name1", "calling_pkg_name1",
             true /*is_instant_app*/, 101 /*activity_start_msec*/, bucketStartTimeNs + 10));
-        events.push_back(CreateAppStartChangedEvent(
-            appUid1, "app1", AppStartChanged::HOT, "activity_name2", "calling_pkg_name2",
+        events.push_back(CreateAppStartOccurredEvent(
+            appUid1, "app1", AppStartOccurred::HOT, "activity_name2", "calling_pkg_name2",
             true /*is_instant_app*/, 102 /*activity_start_msec*/, bucketStartTimeNs + 20));
-        events.push_back(CreateAppStartChangedEvent(
-            appUid1, "app1", AppStartChanged::COLD, "activity_name3", "calling_pkg_name3",
+        events.push_back(CreateAppStartOccurredEvent(
+            appUid1, "app1", AppStartOccurred::COLD, "activity_name3", "calling_pkg_name3",
             true /*is_instant_app*/, 103 /*activity_start_msec*/, bucketStartTimeNs + 30));
-        events.push_back(CreateAppStartChangedEvent(
-            appUid1, "app1", AppStartChanged::WARM, "activity_name4", "calling_pkg_name4",
+        events.push_back(CreateAppStartOccurredEvent(
+            appUid1, "app1", AppStartOccurred::WARM, "activity_name4", "calling_pkg_name4",
             true /*is_instant_app*/, 104 /*activity_start_msec*/,
             bucketStartTimeNs + bucketSizeNs + 30));
-        events.push_back(CreateAppStartChangedEvent(
-            appUid1, "app1", AppStartChanged::COLD, "activity_name5", "calling_pkg_name5",
+        events.push_back(CreateAppStartOccurredEvent(
+            appUid1, "app1", AppStartOccurred::COLD, "activity_name5", "calling_pkg_name5",
             true /*is_instant_app*/, 105 /*activity_start_msec*/,
             bucketStartTimeNs + 2 * bucketSizeNs));
-        events.push_back(CreateAppStartChangedEvent(
-            appUid1, "app1", AppStartChanged::HOT, "activity_name6", "calling_pkg_name6",
+        events.push_back(CreateAppStartOccurredEvent(
+            appUid1, "app1", AppStartOccurred::HOT, "activity_name6", "calling_pkg_name6",
             false /*is_instant_app*/, 106 /*activity_start_msec*/,
             bucketStartTimeNs + 2 * bucketSizeNs + 10));
 
         events.push_back(CreateMoveToBackgroundEvent(
                 appUid2, bucketStartTimeNs + bucketSizeNs + 10));
-        events.push_back(CreateAppStartChangedEvent(
-            appUid2, "app2", AppStartChanged::COLD, "activity_name7", "calling_pkg_name7",
+        events.push_back(CreateAppStartOccurredEvent(
+            appUid2, "app2", AppStartOccurred::COLD, "activity_name7", "calling_pkg_name7",
             true /*is_instant_app*/, 201 /*activity_start_msec*/,
             bucketStartTimeNs + 2 * bucketSizeNs + 10));
 
@@ -159,7 +159,7 @@
         EXPECT_EQ(2, gaugeMetrics.data_size());
 
         auto data = gaugeMetrics.data(0);
-        EXPECT_EQ(android::util::APP_START_CHANGED, data.dimensions_in_what().field());
+        EXPECT_EQ(android::util::APP_START_OCCURRED, data.dimensions_in_what().field());
         EXPECT_EQ(1, data.dimensions_in_what().value_tuple().dimensions_value_size());
         EXPECT_EQ(1 /* uid field */,
                   data.dimensions_in_what().value_tuple().dimensions_value(0).field());
@@ -171,29 +171,29 @@
             EXPECT_EQ(2, data.bucket_info(0).wall_clock_timestamp_nanos_size());
             EXPECT_EQ(bucketStartTimeNs, data.bucket_info(0).start_bucket_nanos());
             EXPECT_EQ(bucketStartTimeNs + bucketSizeNs, data.bucket_info(0).end_bucket_nanos());
-            EXPECT_EQ(AppStartChanged::HOT, data.bucket_info(0).atom(0).app_start_changed().type());
+            EXPECT_EQ(AppStartOccurred::HOT, data.bucket_info(0).atom(0).app_start_occurred().type());
             EXPECT_EQ("activity_name2",
-                      data.bucket_info(0).atom(0).app_start_changed().activity_name());
+                      data.bucket_info(0).atom(0).app_start_occurred().activity_name());
             EXPECT_EQ(102L,
-                      data.bucket_info(0).atom(0).app_start_changed().activity_start_millis());
-            EXPECT_EQ(AppStartChanged::COLD,
-                      data.bucket_info(0).atom(1).app_start_changed().type());
+                      data.bucket_info(0).atom(0).app_start_occurred().activity_start_millis());
+            EXPECT_EQ(AppStartOccurred::COLD,
+                      data.bucket_info(0).atom(1).app_start_occurred().type());
             EXPECT_EQ("activity_name3",
-                      data.bucket_info(0).atom(1).app_start_changed().activity_name());
+                      data.bucket_info(0).atom(1).app_start_occurred().activity_name());
             EXPECT_EQ(103L,
-                      data.bucket_info(0).atom(1).app_start_changed().activity_start_millis());
+                      data.bucket_info(0).atom(1).app_start_occurred().activity_start_millis());
 
             EXPECT_EQ(1, data.bucket_info(1).atom_size());
             EXPECT_EQ(1, data.bucket_info(1).elapsed_timestamp_nanos_size());
             EXPECT_EQ(1, data.bucket_info(1).wall_clock_timestamp_nanos_size());
             EXPECT_EQ(bucketStartTimeNs + bucketSizeNs, data.bucket_info(1).start_bucket_nanos());
             EXPECT_EQ(bucketStartTimeNs + 2 * bucketSizeNs, data.bucket_info(1).end_bucket_nanos());
-            EXPECT_EQ(AppStartChanged::WARM,
-                      data.bucket_info(1).atom(0).app_start_changed().type());
+            EXPECT_EQ(AppStartOccurred::WARM,
+                      data.bucket_info(1).atom(0).app_start_occurred().type());
             EXPECT_EQ("activity_name4",
-                      data.bucket_info(1).atom(0).app_start_changed().activity_name());
+                      data.bucket_info(1).atom(0).app_start_occurred().activity_name());
             EXPECT_EQ(104L,
-                      data.bucket_info(1).atom(0).app_start_changed().activity_start_millis());
+                      data.bucket_info(1).atom(0).app_start_occurred().activity_start_millis());
 
             EXPECT_EQ(2, data.bucket_info(2).atom_size());
             EXPECT_EQ(2, data.bucket_info(2).elapsed_timestamp_nanos_size());
@@ -202,41 +202,41 @@
                       data.bucket_info(2).start_bucket_nanos());
             EXPECT_EQ(bucketStartTimeNs + 3 * bucketSizeNs,
                       data.bucket_info(2).end_bucket_nanos());
-            EXPECT_EQ(AppStartChanged::COLD,
-                      data.bucket_info(2).atom(0).app_start_changed().type());
+            EXPECT_EQ(AppStartOccurred::COLD,
+                      data.bucket_info(2).atom(0).app_start_occurred().type());
             EXPECT_EQ("activity_name5",
-                      data.bucket_info(2).atom(0).app_start_changed().activity_name());
+                      data.bucket_info(2).atom(0).app_start_occurred().activity_name());
             EXPECT_EQ(105L,
-                      data.bucket_info(2).atom(0).app_start_changed().activity_start_millis());
-            EXPECT_EQ(AppStartChanged::HOT,
-                      data.bucket_info(2).atom(1).app_start_changed().type());
+                      data.bucket_info(2).atom(0).app_start_occurred().activity_start_millis());
+            EXPECT_EQ(AppStartOccurred::HOT,
+                      data.bucket_info(2).atom(1).app_start_occurred().type());
             EXPECT_EQ("activity_name6",
-                      data.bucket_info(2).atom(1).app_start_changed().activity_name());
+                      data.bucket_info(2).atom(1).app_start_occurred().activity_name());
             EXPECT_EQ(106L,
-                      data.bucket_info(2).atom(1).app_start_changed().activity_start_millis());
+                      data.bucket_info(2).atom(1).app_start_occurred().activity_start_millis());
         } else {
             EXPECT_EQ(1, data.bucket_info(0).atom_size());
             EXPECT_EQ(1, data.bucket_info(0).elapsed_timestamp_nanos_size());
             EXPECT_EQ(1, data.bucket_info(0).wall_clock_timestamp_nanos_size());
             EXPECT_EQ(bucketStartTimeNs, data.bucket_info(0).start_bucket_nanos());
             EXPECT_EQ(bucketStartTimeNs + bucketSizeNs, data.bucket_info(0).end_bucket_nanos());
-            EXPECT_EQ(AppStartChanged::HOT, data.bucket_info(0).atom(0).app_start_changed().type());
+            EXPECT_EQ(AppStartOccurred::HOT, data.bucket_info(0).atom(0).app_start_occurred().type());
             EXPECT_EQ("activity_name2",
-                      data.bucket_info(0).atom(0).app_start_changed().activity_name());
+                      data.bucket_info(0).atom(0).app_start_occurred().activity_name());
             EXPECT_EQ(102L,
-                      data.bucket_info(0).atom(0).app_start_changed().activity_start_millis());
+                      data.bucket_info(0).atom(0).app_start_occurred().activity_start_millis());
 
             EXPECT_EQ(1, data.bucket_info(1).atom_size());
             EXPECT_EQ(1, data.bucket_info(1).elapsed_timestamp_nanos_size());
             EXPECT_EQ(1, data.bucket_info(1).wall_clock_timestamp_nanos_size());
             EXPECT_EQ(bucketStartTimeNs + bucketSizeNs, data.bucket_info(1).start_bucket_nanos());
             EXPECT_EQ(bucketStartTimeNs + 2 * bucketSizeNs, data.bucket_info(1).end_bucket_nanos());
-            EXPECT_EQ(AppStartChanged::WARM,
-                      data.bucket_info(1).atom(0).app_start_changed().type());
+            EXPECT_EQ(AppStartOccurred::WARM,
+                      data.bucket_info(1).atom(0).app_start_occurred().type());
             EXPECT_EQ("activity_name4",
-                      data.bucket_info(1).atom(0).app_start_changed().activity_name());
+                      data.bucket_info(1).atom(0).app_start_occurred().activity_name());
             EXPECT_EQ(104L,
-                      data.bucket_info(1).atom(0).app_start_changed().activity_start_millis());
+                      data.bucket_info(1).atom(0).app_start_occurred().activity_start_millis());
 
             EXPECT_EQ(1, data.bucket_info(2).atom_size());
             EXPECT_EQ(1, data.bucket_info(2).elapsed_timestamp_nanos_size());
@@ -245,17 +245,17 @@
                       data.bucket_info(2).start_bucket_nanos());
             EXPECT_EQ(bucketStartTimeNs + 3 * bucketSizeNs,
                       data.bucket_info(2).end_bucket_nanos());
-            EXPECT_EQ(AppStartChanged::COLD,
-                      data.bucket_info(2).atom(0).app_start_changed().type());
+            EXPECT_EQ(AppStartOccurred::COLD,
+                      data.bucket_info(2).atom(0).app_start_occurred().type());
             EXPECT_EQ("activity_name5",
-                      data.bucket_info(2).atom(0).app_start_changed().activity_name());
+                      data.bucket_info(2).atom(0).app_start_occurred().activity_name());
             EXPECT_EQ(105L,
-                      data.bucket_info(2).atom(0).app_start_changed().activity_start_millis());
+                      data.bucket_info(2).atom(0).app_start_occurred().activity_start_millis());
         }
 
         data = gaugeMetrics.data(1);
 
-        EXPECT_EQ(data.dimensions_in_what().field(), android::util::APP_START_CHANGED);
+        EXPECT_EQ(data.dimensions_in_what().field(), android::util::APP_START_OCCURRED);
         EXPECT_EQ(data.dimensions_in_what().value_tuple().dimensions_value_size(), 1);
         EXPECT_EQ(1 /* uid field */,
                   data.dimensions_in_what().value_tuple().dimensions_value(0).field());
@@ -266,10 +266,10 @@
         EXPECT_EQ(1, data.bucket_info(0).wall_clock_timestamp_nanos_size());
         EXPECT_EQ(bucketStartTimeNs + 2 * bucketSizeNs, data.bucket_info(0).start_bucket_nanos());
         EXPECT_EQ(bucketStartTimeNs + 3 * bucketSizeNs, data.bucket_info(0).end_bucket_nanos());
-        EXPECT_EQ(AppStartChanged::COLD, data.bucket_info(0).atom(0).app_start_changed().type());
+        EXPECT_EQ(AppStartOccurred::COLD, data.bucket_info(0).atom(0).app_start_occurred().type());
         EXPECT_EQ("activity_name7",
-                  data.bucket_info(0).atom(0).app_start_changed().activity_name());
-        EXPECT_EQ(201L, data.bucket_info(0).atom(0).app_start_changed().activity_start_millis());
+                  data.bucket_info(0).atom(0).app_start_occurred().activity_name());
+        EXPECT_EQ(201L, data.bucket_info(0).atom(0).app_start_occurred().activity_start_millis());
     }
 }
 
diff --git a/cmds/statsd/tests/guardrail/StatsdStats_test.cpp b/cmds/statsd/tests/guardrail/StatsdStats_test.cpp
index 5c4eda8..04ce73a 100644
--- a/cmds/statsd/tests/guardrail/StatsdStats_test.cpp
+++ b/cmds/statsd/tests/guardrail/StatsdStats_test.cpp
@@ -210,7 +210,7 @@
 
     stats.noteAtomLogged(android::util::SENSOR_STATE_CHANGED, now + 1);
     stats.noteAtomLogged(android::util::SENSOR_STATE_CHANGED, now + 2);
-    stats.noteAtomLogged(android::util::DROPBOX_ERROR_CHANGED, now + 3);
+    stats.noteAtomLogged(android::util::APP_CRASH_OCCURRED, now + 3);
     // pulled event, should ignore
     stats.noteAtomLogged(android::util::WIFI_BYTES_TRANSFER, now + 4);
 
@@ -228,7 +228,7 @@
         if (atomStats.tag() == android::util::SENSOR_STATE_CHANGED && atomStats.count() == 3) {
             sensorAtomGood = true;
         }
-        if (atomStats.tag() == android::util::DROPBOX_ERROR_CHANGED && atomStats.count() == 1) {
+        if (atomStats.tag() == android::util::APP_CRASH_OCCURRED && atomStats.count() == 1) {
             dropboxAtomGood = true;
         }
     }
diff --git a/cmds/statsd/tests/statsd_test_util.cpp b/cmds/statsd/tests/statsd_test_util.cpp
index ce44a35..6621500 100644
--- a/cmds/statsd/tests/statsd_test_util.cpp
+++ b/cmds/statsd/tests/statsd_test_util.cpp
@@ -152,42 +152,42 @@
 }
 
 AtomMatcher CreateActivityForegroundStateChangedAtomMatcher(
-    const string& name, ActivityForegroundStateChanged::Activity activity) {
+    const string& name, ActivityForegroundStateChanged::State state) {
     AtomMatcher atom_matcher;
     atom_matcher.set_id(StringToId(name));
     auto simple_atom_matcher = atom_matcher.mutable_simple_atom_matcher();
     simple_atom_matcher->set_atom_id(android::util::ACTIVITY_FOREGROUND_STATE_CHANGED);
     auto field_value_matcher = simple_atom_matcher->add_field_value_matcher();
     field_value_matcher->set_field(4);  // Activity field.
-    field_value_matcher->set_eq_int(activity);
+    field_value_matcher->set_eq_int(state);
     return atom_matcher;
 }
 
 AtomMatcher CreateMoveToBackgroundAtomMatcher() {
     return CreateActivityForegroundStateChangedAtomMatcher(
-        "MoveToBackground", ActivityForegroundStateChanged::MOVE_TO_BACKGROUND);
+        "Background", ActivityForegroundStateChanged::BACKGROUND);
 }
 
 AtomMatcher CreateMoveToForegroundAtomMatcher() {
     return CreateActivityForegroundStateChangedAtomMatcher(
-        "MoveToForeground", ActivityForegroundStateChanged::MOVE_TO_FOREGROUND);
+        "Foreground", ActivityForegroundStateChanged::FOREGROUND);
 }
 
 AtomMatcher CreateProcessLifeCycleStateChangedAtomMatcher(
-    const string& name, ProcessLifeCycleStateChanged::Event event) {
+    const string& name, ProcessLifeCycleStateChanged::State state) {
     AtomMatcher atom_matcher;
     atom_matcher.set_id(StringToId(name));
     auto simple_atom_matcher = atom_matcher.mutable_simple_atom_matcher();
     simple_atom_matcher->set_atom_id(android::util::PROCESS_LIFE_CYCLE_STATE_CHANGED);
     auto field_value_matcher = simple_atom_matcher->add_field_value_matcher();
     field_value_matcher->set_field(3);  // Process state field.
-    field_value_matcher->set_eq_int(event);
+    field_value_matcher->set_eq_int(state);
     return atom_matcher;
 }
 
 AtomMatcher CreateProcessCrashAtomMatcher() {
     return CreateProcessLifeCycleStateChangedAtomMatcher(
-        "ProcessCrashed", ProcessLifeCycleStateChanged::PROCESS_CRASHED);
+        "Crashed", ProcessLifeCycleStateChanged::CRASHED);
 }
 
 Predicate CreateScheduledJobPredicate() {
@@ -241,8 +241,8 @@
 Predicate CreateIsInBackgroundPredicate() {
     Predicate predicate;
     predicate.set_id(StringToId("IsInBackground"));
-    predicate.mutable_simple_predicate()->set_start(StringToId("MoveToBackground"));
-    predicate.mutable_simple_predicate()->set_stop(StringToId("MoveToForeground"));
+    predicate.mutable_simple_predicate()->set_start(StringToId("Background"));
+    predicate.mutable_simple_predicate()->set_stop(StringToId("Foreground"));
     return predicate;
 }
 
@@ -373,25 +373,25 @@
 }
 
 std::unique_ptr<LogEvent> CreateActivityForegroundStateChangedEvent(
-    const int uid, const ActivityForegroundStateChanged::Activity activity, uint64_t timestampNs) {
+    const int uid, const ActivityForegroundStateChanged::State state, uint64_t timestampNs) {
     auto event = std::make_unique<LogEvent>(
         android::util::ACTIVITY_FOREGROUND_STATE_CHANGED, timestampNs);
     event->write(uid);
     event->write("pkg_name");
     event->write("class_name");
-    event->write(activity);
+    event->write(state);
     event->init();
     return event;
 }
 
 std::unique_ptr<LogEvent> CreateMoveToBackgroundEvent(const int uid, uint64_t timestampNs) {
     return CreateActivityForegroundStateChangedEvent(
-        uid, ActivityForegroundStateChanged::MOVE_TO_BACKGROUND, timestampNs);
+        uid, ActivityForegroundStateChanged::BACKGROUND, timestampNs);
 }
 
 std::unique_ptr<LogEvent> CreateMoveToForegroundEvent(const int uid, uint64_t timestampNs) {
     return CreateActivityForegroundStateChangedEvent(
-        uid, ActivityForegroundStateChanged::MOVE_TO_FOREGROUND, timestampNs);
+        uid, ActivityForegroundStateChanged::FOREGROUND, timestampNs);
 }
 
 std::unique_ptr<LogEvent> CreateSyncStateChangedEvent(
@@ -418,19 +418,19 @@
 }
 
 std::unique_ptr<LogEvent> CreateProcessLifeCycleStateChangedEvent(
-    const int uid, const ProcessLifeCycleStateChanged::Event event, uint64_t timestampNs) {
+    const int uid, const ProcessLifeCycleStateChanged::State state, uint64_t timestampNs) {
     auto logEvent = std::make_unique<LogEvent>(
         android::util::PROCESS_LIFE_CYCLE_STATE_CHANGED, timestampNs);
     logEvent->write(uid);
     logEvent->write("");
-    logEvent->write(event);
+    logEvent->write(state);
     logEvent->init();
     return logEvent;
 }
 
 std::unique_ptr<LogEvent> CreateAppCrashEvent(const int uid, uint64_t timestampNs) {
     return CreateProcessLifeCycleStateChangedEvent(
-        uid, ProcessLifeCycleStateChanged::PROCESS_CRASHED, timestampNs);
+        uid, ProcessLifeCycleStateChanged::CRASHED, timestampNs);
 }
 
 std::unique_ptr<LogEvent> CreateIsolatedUidChangedEvent(