// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Sync protocol for debug info clients can send to the sync server.

syntax = "proto2";

option optimize_for = LITE_RUNTIME;
option retain_unknown_fields = true;

package sync_pb;

import "get_updates_caller_info.proto";

// Per-type hint information.
message TypeHint {
  // The data type this hint applied to.
  optional int32 data_type_id = 1;

  // Whether or not a valid hint is provided.
  optional bool has_valid_hint = 2;
}

// Information about the source that triggered a sync.
message SourceInfo {
  // An enum indicating the reason for the nudge.
  optional GetUpdatesCallerInfo.GetUpdatesSource source = 1;

  // The per-type hint information associated with the nudge.
  repeated TypeHint type_hint = 2;
}

// The additional info here is from the StatusController. They get sent when
// the event SYNC_CYCLE_COMPLETED  is sent.
message SyncCycleCompletedEventInfo {
  // optional bool syncer_stuck = 1; // Was always false, now obsolete.

  // The client has never set these values correctly.  It set
  // num_blocking_conflicts to the total number of conflicts detected and set
  // num_non_blocking_conflicts to the number of blocking (aka. simple)
  // conflicts.
  //
  // These counters have been deprecated to avoid further confusion.  The newer
  // counters provide more detail and are less buggy.
  optional int32 num_blocking_conflicts = 2 [deprecated = true];
  optional int32 num_non_blocking_conflicts = 3 [deprecated = true];

  // These new conflict counters replace the ones above.
  optional int32 num_encryption_conflicts = 4;
  optional int32 num_hierarchy_conflicts = 5;
  optional int32 num_simple_conflicts = 6; // No longer sent since M24.
  optional int32 num_server_conflicts = 7;

  // Counts to track the effective usefulness of our GetUpdate requests.
  optional int32 num_updates_downloaded = 8;
  optional int32 num_reflected_updates_downloaded = 9;
  optional GetUpdatesCallerInfo caller_info = 10;

  // A list of all the sources that were merged into this session.
  //
  // Some scenarios, notably mode switches and canary jobs, can spuriously add
  // back-to-back duplicate sources to this list.
  repeated SourceInfo source_info = 11;
}

// Datatype specifics statistics gathered at association time.
message DatatypeAssociationStats {
  // The datatype that was associated.
  optional int32 data_type_id = 1;

  // The state of the world before association.
  optional int32 num_local_items_before_association = 2;
  optional int32 num_sync_items_before_association = 3;

  // The state of the world after association.
  optional int32 num_local_items_after_association = 4;
  optional int32 num_sync_items_after_association = 5;

  // The changes that got us from before to after. In a correctly working
  // system these should be the deltas between before and after.
  optional int32 num_local_items_added = 6;
  optional int32 num_local_items_deleted = 7;
  optional int32 num_local_items_modified = 8;
  optional int32 num_sync_items_added = 9;
  optional int32 num_sync_items_deleted = 10;
  optional int32 num_sync_items_modified = 11;

  // Model versions before association. Ideally local and sync model should
  // have same version if models were persisted properly in last session.
  // Note: currently version is only set on bookmark model.
  optional int64 local_version_pre_association = 20;
  optional int64 sync_version_pre_association = 21;

  // The data type ran into an error during model association.
  optional bool had_error = 12;

  // Waiting time before downloading starts. This measures the time between
  // receiving configuration request for a set of data types to starting
  // downloading data of this type.
  optional int64 download_wait_time_us = 15;

  // Time spent on downloading sync data for first time sync.
  // Note: This measures the time between asking backend to download data to
  //       being notified of download-ready by backend. So it consists of
  //       time on data downloading and processing at sync backend. But
  //       downloading time should dominate. It's also the total time spent on
  //       downloading data of all types in the priority group of
  //       |data_type_id| instead of just one data type.
  optional int64 download_time_us = 13;

  // Waiting time for higher priority types to finish association. This
  // measures the time between finishing downloading data to requesting
  // association manager to associate this batch of types. High priority types
  // have near zero waiting time.
  optional int64 association_wait_time_for_high_priority_us = 16;

  // Waiting time for other types with same priority during association.
  // Data type manger sends types of same priority to association manager to
  // configure as a batch. Association manager configures one type at a time.
  // This measures the time between when a type is sent to association manager
  // (among other types) to when association manager starts configuring the
  // type. Total wait time before association is
  //     |association_wait_time_for_high_priority_us| +
  //     |association_wait_time_for_same_priority_us|
  optional int64 association_wait_time_for_same_priority_us = 14;

  // Time spent on model association.
  optional int64 association_time_us = 17;

  // Higher priority type that's configured before this type.
  repeated int32 high_priority_type_configured_before = 18;

  // Same priority type that's configured before this type.
  repeated int32 same_priority_type_configured_before = 19;
}

message DebugEventInfo {
  // Singleton event types. These events have no further information beyond
  // the fact that the event happened.
  enum SingletonEventType {
    CONNECTION_STATUS_CHANGE = 1; // Connection status change. Note this
                                  // gets generated even during a successful
                                  // connection.
    UPDATED_TOKEN = 2; // Client received an updated token.
    PASSPHRASE_REQUIRED = 3; // Cryptographer needs passphrase.
    PASSPHRASE_ACCEPTED = 4; // Passphrase was accepted by cryptographer.
    INITIALIZATION_COMPLETE = 5; // Sync Initialization is complete.

    // |STOP_SYNCING_PERMANENTLY| event should never be seen by the server in
    // the absence of bugs.
    STOP_SYNCING_PERMANENTLY = 6; // Server sent stop syncing permanently.

    ENCRYPTION_COMPLETE = 7; // Client has finished encrypting all data.
    ACTIONABLE_ERROR = 8; // Client received an actionable error.
    ENCRYPTED_TYPES_CHANGED = 9; // Set of encrypted types has changed.
                                 // NOTE: until m25 bootstrap token updated also
                                 // shared this field (erroneously).
    PASSPHRASE_TYPE_CHANGED = 10;  // The encryption passphrase state changed.
    KEYSTORE_TOKEN_UPDATED = 11;  // A new keystore encryption token was
                                  // persisted.
    CONFIGURE_COMPLETE = 12;      // The datatype manager has finished an
                                  // at least partially successful
                                  // configuration and is once again syncing
                                  // with the server.
    BOOTSTRAP_TOKEN_UPDATED = 13;  // A new cryptographer bootstrap token was
                                   // generated.
  }

  // Each of the following fields correspond to different kinds of events. as
  // a result, only one is set during any single DebugEventInfo.
  // A singleton event. See enum definition.
  optional SingletonEventType singleton_event = 1;
  // A sync cycle completed.
  optional SyncCycleCompletedEventInfo sync_cycle_completed_event_info = 2;
  // A datatype triggered a nudge.
  optional int32 nudging_datatype = 3;
  // A notification triggered a nudge.
  repeated int32 datatypes_notified_from_server = 4;
  // A datatype finished model association.
  optional DatatypeAssociationStats datatype_association_stats = 5;
}

message DebugInfo {
  repeated DebugEventInfo events = 1;

  // Whether cryptographer is ready to encrypt and decrypt data.
  optional bool cryptographer_ready = 2;

  // Cryptographer has pending keys which indicates the correct passphrase
  // has not been provided yet.
  optional bool cryptographer_has_pending_keys = 3;

  // Indicates client has dropped some events to save bandwidth.
  optional bool events_dropped = 4;
}