/*
 * Copyright (C) 2021 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// Partial clone of frameworks/proto_logging/stats/atoms.proto. CarWatchdogService only uses small
// number of atoms.

syntax = "proto2";

package android.car.watchdog;
option java_package = "com.android.car.watchdog";
option java_outer_classname = "AtomsProto";

/**
 * Logs the current state of an application/process before it is killed.
 *
 * Keep in sync with proto file at frameworks/proto_logging/stats/atoms.proto
 */
message CarWatchdogKillStatsReported {
  // Linux process uid for the package.
  optional int32 uid = 1;

  // State of the uid when it was killed.
  enum UidState {
    UNKNOWN_UID_STATE = 0;
    BACKGROUND_MODE = 1;
    FOREGROUND_MODE = 2;
  }
  optional UidState uid_state = 2;

  // System state indicating whether the system was in normal mode or garage mode.
  enum SystemState {
    UNKNOWN_SYSTEM_STATE = 0;
    USER_INTERACTION_MODE = 1;
    USER_NO_INTERACTION_MODE = 2;
    GARAGE_MODE = 3;
  }
  optional SystemState system_state = 3;

  // Reason for killing the application.
  // Keep in sync with proto file at packages/services/Car/cpp/watchdog/proto
  enum KillReason {
    UNKNOWN_KILL_REASON = 0;
    KILLED_ON_ANR = 1;
    KILLED_ON_IO_OVERUSE = 2;
    KILLED_ON_MEMORY_OVERUSE = 3;
  }
  optional KillReason kill_reason = 4;

  // Stats of the processes owned by the application when the application was killed.
  // The process stack traces are not collected when the application was killed due to IO_OVERUSE.
  optional CarWatchdogProcessStats process_stats = 5;

  // The application's I/O overuse stats logged only when the kill reason is KILLED_ON_IO_OVERUSE.
  optional CarWatchdogIoOveruseStats io_overuse_stats = 6;
}

/**
 * Logs the I/O overuse stats for an application on detecting I/O overuse.
 *
 * Keep in sync with proto file at frameworks/proto_logging/stats/atoms.proto
 */
message CarWatchdogIoOveruseStatsReported {
  // Linux process uid for the package.
  optional int32 uid = 1;

  // The application's I/O overuse stats.
  optional CarWatchdogIoOveruseStats io_overuse_stats = 2;
}

/**
 * Logs I/O overuse stats for a package.
 *
 * Keep in sync with proto file at frameworks/proto_logging/stats/atoms.proto
 */
message CarWatchdogIoOveruseStats {
  enum Period {
    UNKNOWN_PERIOD = 0;
    DAILY = 1;
    WEEKLY = 2;
  }

  // Threshold and usage stats period.
  optional Period period = 1;

  // Threshold in-terms of write bytes defined for the package.
  optional CarWatchdogPerStateBytes threshold = 2;

  // Number of write bytes in each state for the specified period.
  optional CarWatchdogPerStateBytes written_bytes = 3;

  // Application or service uptime during the aforemetioned period.
  optional uint64 uptime_millis = 4;
};

/**
 * Logs bytes attributed to each application and system states.
 *
 * Keep in sync with proto file at frameworks/proto_logging/stats/atoms.proto
 */
message CarWatchdogPerStateBytes {
  // Number of bytes attributed to the application foreground.
  optional int64 foreground_bytes = 1;

  // Number of bytes attributed to the application background.
  optional int64 background_bytes = 2;

  // Number of bytes attributed to the garage mode.
  optional int64 garage_mode_bytes = 3;
}

/**
 * Logs each CarWatchdogProcessStat in CarWatchdogProcessStats.
 *
 * Keep in sync with proto file at frameworks/proto_logging/stats/atoms.proto
 */
message CarWatchdogProcessStats {
  // Records the stats of the processes owned by an application.
  repeated CarWatchdogProcessStat process_stat = 1;
}

/**
 * Logs a process's stats.
 *
 * Keep in sync with proto file at frameworks/proto_logging/stats/atoms.proto
 */
message CarWatchdogProcessStat {
  // Command name of the process.
  optional string process_name = 1;

  // Process uptime.
  optional uint64 uptime_millis = 2;

  // Number of major page faults caused by the process and its children.
  optional uint64 major_page_faults = 3;

  // Peak virtual memory size in kb.
  optional uint64 vm_peak_kb = 4;

  // Virtual memory size in kb.
  optional uint64 vm_size_kb = 5;

  // Peak resident set size (high water mark) in kb.
  optional uint64 vm_hwm_kb = 6;

  // Resident set size in kb.
  optional uint64 vm_rss_kb = 7;
}

/**
 * Logs total I/O usage summary for all applications and services running in the system.
 *
 * Keep in sync with proto file at
 * packages/services/Car/service/src/com/android/car/watchdog/proto/atoms.proto
 *
 * Pulled from:
 *  packages/services/Car/service/src/com/android/car/watchdog/WatchdogPerfHandler.java
 */
message CarWatchdogSystemIoUsageSummary {
  // I/O usage summary for the system.
  optional CarWatchdogIoUsageSummary io_usage_summary = 1;

  // Start time of the event in milliseconds since epoch.
  // Note: This field must be a top-level field as it is used to slice the metrics.
  optional int64 start_time_millis = 2;
}

/**
 * Logs I/O usage summary for an UID.
 *
 * Keep in sync with proto file at
 * packages/services/Car/service/src/com/android/car/watchdog/proto/atoms.proto
 *
 * Pulled from:
 *  packages/services/Car/service/src/com/android/car/watchdog/WatchdogPerfHandler.java
 */
message CarWatchdogUidIoUsageSummary {
  // UID of the application/service whose usage summary are recorded.
  optional int32 uid = 1;

  // I/O usage summary for the UID.
  optional CarWatchdogIoUsageSummary io_usage_summary = 2;

  // Start time of the event in milliseconds since epoch.
  // Note: This field must be a top-level field as it is used to slice the metrics.
  optional int64 start_time_millis = 3;
}

/**
 * Logs I/O usage summary for a time period.
 *
 * Keep in sync with proto file at
 * packages/services/Car/service/src/com/android/car/watchdog/proto/atoms.proto
 *
 * Pulled from:
 *  packages/services/Car/service/src/com/android/car/watchdog/WatchdogPerfHandler.java
 */
message CarWatchdogIoUsageSummary {
  // Summary event time period.
  optional CarWatchdogEventTimePeriod event_time_period = 1;

  // Daily I/O usage summary for the period. Logs summary entries only for days with I/O usage.
  // The entries are ordered beginning from the event_time_period.start_time_millis.
  repeated CarWatchdogDailyIoUsageSummary daily_io_usage_summary = 2;
}

/**
 * Logs a car watchdog event's time period.
 *
 * Keep in sync with proto file at
 * packages/services/Car/service/src/com/android/car/watchdog/proto/atoms.proto
 *
 * Pulled from:
 *  packages/services/Car/service/src/com/android/car/watchdog/WatchdogPerfHandler.java
 */
message CarWatchdogEventTimePeriod {
  enum Period {
    UNKNOWN_PERIOD = 0;
    WEEKLY = 1;
    BIWEEKLY = 2;
    MONTHLY = 3;
  }

  // Deprecated field - Start time of the event in milliseconds since epoch.
  optional uint64 start_time_millis = 1 [deprecated = true];

  // Period for the event.
  optional Period period = 2;
}

/**
 * Logs daily I/O usage summary.
 *
 * Keep in sync with proto file at
 * packages/services/Car/service/src/com/android/car/watchdog/proto/atoms.proto
 *
 * Pulled from:
 *  packages/services/Car/service/src/com/android/car/watchdog/WatchdogPerfHandler.java
 */
message CarWatchdogDailyIoUsageSummary {
  // Total bytes written to disk during a day.
  optional CarWatchdogPerStateBytes written_bytes = 1;

  // Total uptime for the system or service or application during a day.
  optional uint64 uptime_millis = 2;

  // Total disk I/O overuses during a day.
  optional int32 overuse_count = 3;
}