/*
 * Copyright 2020 Google LLC
 *
 * 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 fcp.client;

option java_package = "com.google.intelligence.fcp.client";
option java_multiple_files = true;

/**
 * Enumerations of timer and counter identifiers.
 *
 * For monitoring, certain timers and counters are logged as integer histograms.
 * This allows for computing aggregate histograms on the cloud and determine
 * distributions of latencies for blocks of code, resource usage etc.
 */
enum HistogramCounters {
  HISTOGRAM_COUNTER_UNDEFINED = 0;

  /**
   * How long it takes to run a plan on device, excluding downloading the plan
   * and reporting results.
   */
  TRAINING_RUN_PHASE_LATENCY = 1;

  /**
   * The end time of running training for a whole plan, excluding downloading
   * the plan and reporting results, relative to the start of the training
   * session.
   */
  TRAINING_RUN_PHASE_END_TIME = 2;

  /** How long running a "restore state op" takes. */
  TRAINING_RESTORE_STATE_LATENCY = 3;

  /**
   * How long it takes to run training for a whole client execution (which may
   * involve running multiple epochs). This includes connecting and fetching
   * example from the example store, as well as training over them.
   */
  TRAINING_RUN_CLIENT_EXECUTION_LATENCY = 4;

  /** How long running an "init op" takes. */
  TRAINING_INIT_OP_LATENCY = 5;

  /** How long running a "before op" takes. */
  TRAINING_BEFORE_OP_LATENCY = 6;

  /** How long running an "after op" takes. */
  TRAINING_AFTER_OP_LATENCY = 7;

  /**
   * How long it takes to run training for a whole epoch. This includes
   * connecting and fetching example from the example store, as well as training
   * over them.
   */
  TRAINING_RUN_EPOCH_LATENCY = 8;

  /**
   * How long it takes to gather enough examples for a mini batch.
   * This counter may be an average across minibatches and epochs.
   */
  TRAINING_GATHER_MINI_BATCH_LATENCY = 9;

  /**
   * How long it takes to run training on a mini batch.
   * This counter may be an average across minibatches and epochs.
   */
  TRAINING_RUN_MINI_BATCH_LATENCY = 10;

  /**
   * How long it takes the TensorFlow session to terminate after it's been
   * interrupted.
   */
  TRAINING_INTERRUPT_TERMINATION_LATENCY = 11;

  /** How long it takes to commit the opstats message to the database. */
  TRAINING_OPSTATS_COMMIT_LATENCY = 12;

  /** The number of examples encountered during overall training, across all
   * client executions. */
  TRAINING_OVERALL_EXAMPLE_COUNT = 100001;

  /**
   * The sum of the size (in bytes) of all the examples encountered during
   * overall training, across all client executions.
   */
  TRAINING_OVERALL_EXAMPLE_SIZE = 100002;

  /**
   * The number of examples encountered in a client execution, across all
   * epochs.
   */
  TRAINING_CLIENT_EXECUTION_EXAMPLE_COUNT = 100003;

  /**
   * The sum of the size (in bytes) of all the examples encountered in a client
   * execution, across all epoch.
   */
  TRAINING_CLIENT_EXECUTION_EXAMPLE_SIZE = 100004;

  /**
   * The number of examples encountered in an epoch.
   * This counter may be an average from multiple epochs.
   */
  TRAINING_EPOCH_EXAMPLE_COUNT = 100005;

  /**
   * The sum of the size (in bytes) of all the examples encountered in an
   * epoch. This counter may be an average from multiple epochs
   */
  TRAINING_EPOCH_EXAMPLE_SIZE = 100006;

  /**
   * The number of examples in a mini batch.
   * This counter may be an average from multiple minibatches.
   */
  TRAINING_MINI_BATCH_EXAMPLE_COUNT = 100007;

  /**
   * The sum of the size (in bytes) of all the examples in a mini batch.
   * This counter may be an average from multiple minibatches.
   */
  TRAINING_MINI_BATCH_EXAMPLE_SIZE = 100008;

  /**
   * The size (in bytes) of the OpStatsDb file.
   */
  OPSTATS_DB_SIZE_BYTES = 100009;

  /**
   * The number of entries in OpStatsDb.
   */
  OPSTATS_DB_NUM_ENTRIES = 100010;

  /**
   * The number of entries pruned from OpStatsDb due to exceeding max size.
   */
  OPSTATS_NUM_PRUNED_ENTRIES = 100011;

  /**
   * The tenure (in hours) of the oldest entry which has been pruned from the
   * OpStatsDb due to exceeding max size.
   */
  OPSTATS_OLDEST_PRUNED_ENTRY_TENURE_HOURS = 100012;

  /** How long checking in/downloading a plan takes (for FL plans only). */
  TRAINING_FL_CHECKIN_LATENCY = 200001;

  /**
   * The end time of reporting results to the server, relative to the start
   * of the training session.
   */
  TRAINING_FL_REPORT_RESULTS_END_TIME = 200002;

  /** How long reporting results to the server takes. */
  TRAINING_FL_REPORT_RESULTS_LATENCY = 200003;

  /** The end time of checking in/downloading a plan from the server, relative
  to the start of the training session. */
  TRAINING_FL_CHECKIN_END_TIME = 200004;

  /** How long reporting results to the server takes. */
  TRAINING_FL_ELIGIBILITY_EVAL_CHECKIN_LATENCY = 200005;
}