/*
 * Copyright (C) 2023 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.
 */

syntax = "proto3";

package android.automotive.watchdog;

// Represents the performance stats captured by the CarWatchdog daemon.
message PerformanceStats {
  optional StatsCollection boot_time_stats = 1;
  optional StatsCollection wake_up_stats = 2;
  repeated UserSwitchStatsCollection user_switch_stats = 3;
  optional StatsCollection last_n_minutes_stats = 4;
  optional StatsCollection custom_collection_stats = 5;
}

// Represents the performance stats captured during a single event as a record.
message StatsCollection {
  optional int64 collection_interval_millis = 1;
  repeated StatsRecord records = 2;
}

// Represents user switch performance stats captured during a single event.
message UserSwitchStatsCollection {
  optional int32 to_user_id = 1;
  optional int32 from_user_id = 2;
  optional StatsCollection user_switch_collection = 3;
}

// Represents the performance stats captured during a single poll.
message StatsRecord {
  optional int32 id = 1;
  optional Date date = 2;
  optional TimeOfDay time = 3;
  optional SystemWideStats system_wide_stats = 4;
  repeated PackageCpuStats package_cpu_stats = 5;
  repeated PackageStorageIoStats package_storage_io_read_stats = 6;
  repeated PackageStorageIoStats package_storage_io_write_stats = 7;
  repeated PackageTaskStateStats package_task_state_stats = 8;
  repeated PackageMajorPageFaults package_major_page_faults = 9;
}

// Represents the system-wide performance summary stats.
message SystemWideStats {
  optional int32 io_wait_time_millis = 1;
  optional int32 idle_cpu_time_millis = 2;
  optional int32 total_cpu_time_millis = 3;
  optional int64 total_cpu_cycles = 4;
  optional int64 total_context_switches = 5;
  optional int32 total_io_blocked_processes = 6;
  optional int32 total_major_page_faults = 7;
  optional StorageIoStats total_storage_io_stats = 8;
}

// Represents the CPU stats for a user package.
message PackageCpuStats {
  message CpuStats {
    optional int32 cpu_time_millis = 1;
    optional int64 cpu_cycles = 2;
  }

  message ProcessCpuStats {
    optional string command = 1;
    optional CpuStats cpu_stats = 2;
  }

  optional UserPackageInfo user_package_info = 1;
  optional CpuStats cpu_stats = 2;
  repeated ProcessCpuStats process_cpu_stats = 3;
}

// Represents the storage I/O stats for a user package.
message PackageStorageIoStats {
  optional UserPackageInfo user_package_info = 1;
  optional StorageIoStats storage_io_stats = 2;
}

message StorageIoStats {
  optional int64 fg_bytes = 1;
  optional int32 fg_fsync = 2;
  optional int64 bg_bytes = 3;
  optional int32 bg_fsync = 4;
}

// Represents the task state stats for a user package.
message PackageTaskStateStats {
  message ProcessTaskStateStats {
    optional string command = 1;
    optional int32 io_blocked_task_count = 2;
  }

  optional UserPackageInfo user_package_info = 1;
  optional int32 io_blocked_task_count = 2;
  optional int32 total_task_count = 3;
  repeated ProcessTaskStateStats process_task_state_stats = 4;
}

// Represents the major page fault stats for a user package.
message PackageMajorPageFaults {
  optional UserPackageInfo user_package_info = 1;
  optional int32 major_page_faults_count = 2;
}

message UserPackageInfo {
  optional int32 user_id = 1;
  optional string package_name = 2;
}

// Represents a whole or partial calendar date, such as a birthday. The time of
// day and time zone are either specified elsewhere or are insignificant. The
// date is relative to the Gregorian Calendar. This can represent one of the
// following:
//
// * A full date, with non-zero year, month, and day values
// * A month and day value, with a zero year, such as an anniversary
// * A year on its own, with zero month and day values
// * A year and month value, with a zero day, such as a credit card expiration
// date
//
// Related types are [google.type.TimeOfDay][google.type.TimeOfDay] and
// `google.protobuf.Timestamp`.
//
// Copied from:
// https://github.com/googleapis/googleapis/blob/master/google/type/date.proto
message Date {
  // Year of the date. Must be from 1 to 9999, or 0 to specify a date without
  // a year.
  optional int32 year = 1;

  // Month of a year. Must be from 1 to 12, or 0 to specify a year without a
  // month and day.
  optional int32 month = 2;

  // Day of a month. Must be from 1 to 31 and valid for the year and month, or 0
  // to specify a year by itself or a year and month where the day isn't
  // significant.
  optional int32 day = 3;
}

// Represents a time of day. The date and time zone are either not significant
// or are specified elsewhere. An API may choose to allow leap seconds. Related
// types are [google.type.Date][google.type.Date] and
// `google.protobuf.Timestamp`.
//
// Copied from:
// https://github.com/googleapis/googleapis/blob/master/google/type/timeofday.proto
message TimeOfDay {
  // Hours of day in 24 hour format. Should be from 0 to 23. An API may choose
  // to allow the value "24:00:00" for scenarios like business closing time.
  optional int32 hours = 1;

  // Minutes of hour of day. Must be from 0 to 59.
  optional int32 minutes = 2;

  // Seconds of minutes of the time. Must normally be from 0 to 59. An API may
  // allow the value 60 if it allows leap-seconds.
  optional int32 seconds = 3;

  // Modified from nanoseconds.
  // Fractions of seconds in milliseconds. Must be from 0 to 999.
  optional int32 millis = 4;
}