// Copyright 2021 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto2";

option optimize_for = LITE_RUNTIME;

package reporting;

// |Destination| indicates which handler a |Record| should be delivered to.
enum Destination {
  UNDEFINED_DESTINATION = 0;

  // |UPLOAD_EVENTS| sends records to the Eventing pipeline.
  UPLOAD_EVENTS = 1;

  // |MEET_DEVICE_TELEMETRY| is for telemetry data events sent by Meet
  // Devices. For more information, see go/reliable-meet-device-telemetry.
  MEET_DEVICE_TELEMETRY = 2;

  // |WEB_PROTECT| legacy web protect events.
  WEB_PROTECT = 3;

  // |ARC_INSTALL| legacy arc app installation events.
  ARC_INSTALL = 4;

  // |POLICY_VALIDATION| legacy policy validation events.
  POLICY_VALIDATION = 5;

  // |EXTENSION_INSTALL| legacy extension installation events.
  EXTENSION_INSTALL = 6;

  // |REPORTING_RECORD| Temporary group for Encrypted Reporting Pipeline.
  REPORTING_RECORD = 7;

  // |DEVICE_TRUST_REPORTS| is for reporting data updates related to the
  // Device Trust connector, sent by Chrome browsers for Chrome Browser Cloud
  // Management (CBCM).
  DEVICE_TRUST_REPORTS = 8;

  // |PRINT_JOBS| print jobs events.
  PRINT_JOBS = 9;

  // |EXTENSIONS_WORKFLOW| is for sending extension requests events,
  // sent for Chrome Browser Cloud Management (CBCM).
  EXTENSIONS_WORKFLOW = 10;

  // |DLP_EVENTS| events send from data leakage protection for Chrome OS
  DLP_EVENTS = 11;

  // |LOGIN_LOGOUT_EVENTS| is for login/logout events.
  LOGIN_LOGOUT_EVENTS = 12;

  // |HEARTBEAT_EVENT| event used with manual and integration tests to ensure
  // that messages are being uploaded and processed correctly.
  HEARTBEAT_EVENTS = 13;

  // |INFO_METRIC| device info events which are sent by ChromeOS devices.
  INFO_METRIC = 14;

  // |TELEMETRY_METRIC| for device telemetry events which are sent by ChromeOS
  // devices.
  TELEMETRY_METRIC = 15;

  // |EVENT_METRIC| for device events which are sent by ChromeOS devices.
  EVENT_METRIC = 16;

  // |ADDED_REMOVED_EVENTS| is for reporting events where a user has
  // been added or removed.
  ADDED_REMOVED_EVENTS = 17;
}

// |Priority| is used to determine when items from the queue should be rate
// limited or shed. Rate limiting indicates that fewer records will be sent due
// to message volume, records of the lowest priority are limited first. Shedding
// records occurs when disk space is at or near the limt, records of the lowest
// priority are shed first.
enum Priority {
  UNDEFINED_PRIORITY = 0;

  // |IMMEDIATE| queues should transfer small amounts of immediately necessary
  // information. These are the events that will be rate limited before
  // |SECURITY| records. |IMMEDIATE| records are shed before |SECURITY| records.
  IMMEDIATE = 1;

  // |FAST_BATCH| queues should transfer small amounts of information that may
  // be critical for administrative experience. These records will be rate
  // limited before |IMMEDIATE| records.
  // |FAST_BATCH| records are shed before |IMMEDIATE| records.
  // Resource utilization and failed application installation are perfect
  // examples of records that need to be |FAST_BATCH|.
  FAST_BATCH = 2;

  // |SLOW_BATCH| queues should transfer small amounts of non-immediate data.
  // These records will be rate limited before |FAST_BATCH| records.
  // |SLOW_BATCH| records are shed before |FAST_BATCH| records.
  // Application metrics are a good example of records that should be
  // |SLOW_BATCH|.
  SLOW_BATCH = 3;

  // |BACKGROUND_BATCH| queues transfer large amounts of non-immediate data.
  // These records will be rate limited before |SLOW_BATCH| records.
  // |BACKGROUND_BATCH| records are shed before |SLOW_BATCH| records.
  // Log files are a perfect examples of records that need to be
  // |BACKGROUND_BATCH|.
  BACKGROUND_BATCH = 4;

  // |MANUAL_BATCH| queues transfer data only on explicit request.
  // Note that since a queue can hold records submitted by multiple clients,
  // one client requesting to transfer data will do so for all collected
  // records of the same priority, including those enqueued by other clients.
  // |MANUAL_BATCH| records are the first to be rate limited, and since there
  // is no automatic transfer, it is important to explicitly flush them often
  // enough to avoid loss of data.
  // |MANUAL_BATCH| records are the first to be shed.
  MANUAL_BATCH = 5;

  // |SECURITY| queues should transfer information indicating potential security
  // issue; like |IMMEDIATE| they are uploaded right after recording.
  // The difference from |IMMEDIATE| is that any sequencing breach (record
  // digest mismatch, lost events, generation switch) in |SECURITY| queue will
  // be exposed to the domain admin. These are the events that will be rate
  // limited last. |SECURITY| records are the last ones to be shed.
  SECURITY = 6;
}