chrome/browser/predictors/resource_prefetch_predictor.proto

// Copyright 2016 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.

// Protocol buffers used for storing in SQLite.
// CAUTION: When any change is done here, bump kDatabaseVersion in
//          resource_prefetch_predictor_tables.h.

syntax = "proto2";

package predictors;

// Required in Chrome.
option optimize_for = LITE_RUNTIME;

// Represents a single subresource.
message ResourceData {
  // Mirrors content::ResourceType.
  enum ResourceType {
    RESOURCE_TYPE_MAIN_FRAME = 0;
    RESOURCE_TYPE_SUB_FRAME = 1;
    RESOURCE_TYPE_STYLESHEET = 2;
    RESOURCE_TYPE_SCRIPT = 3;
    RESOURCE_TYPE_IMAGE = 4;
    RESOURCE_TYPE_FONT_RESOURCE = 5;
    RESOURCE_TYPE_SUB_RESOURCE = 6;
    RESOURCE_TYPE_OBJECT = 7;
    RESOURCE_TYPE_MEDIA = 8;
    RESOURCE_TYPE_WORKER = 9;
    RESOURCE_TYPE_SHARED_WORKER = 10;
    RESOURCE_TYPE_PREFETCH = 11;
    RESOURCE_TYPE_FAVICON = 12;
    RESOURCE_TYPE_XHR = 13;
    RESOURCE_TYPE_PING = 14;
    RESOURCE_TYPE_SERVICE_WORKER = 15;
    RESOURCE_TYPE_CSP_REPORT = 16;
    RESOURCE_TYPE_PLUGIN_RESOURCE = 17;
    RESOURCE_TYPE_LAST_TYPE = 18;
  }

  // Mirrors net::RequestPriority
  enum Priority {
    REQUEST_PRIORITY_THROTTLED = 0;
    REQUEST_PRIORITY_IDLE = 1;
    REQUEST_PRIORITY_LOWEST = 2;
    REQUEST_PRIORITY_LOW = 3;
    REQUEST_PRIORITY_MEDIUM = 4;
    REQUEST_PRIORITY_HIGHEST = 5;
  }

  optional string resource_url = 1;
  optional ResourceType resource_type = 2;
  optional uint32 number_of_hits = 3;
  optional uint32 number_of_misses = 4;
  optional uint32 consecutive_misses = 5;
  optional double average_position = 6;
  optional Priority priority = 7;
  optional bool has_validators = 8;
  optional bool always_revalidate = 9;
  optional bool before_first_contentful_paint = 10;
}

// Represents a collection of subresources associated with URL or host.
message PrefetchData {
  // Main frame URL of host.
  optional string primary_key = 1;
  optional uint64 last_visit_time = 2;
  repeated ResourceData resources = 3;
}

// Represents a single redirect chain endpoint.
message RedirectStat {
  // Represents the host for RedirectData in a host-based table.
  optional string url = 1;
  optional uint32 number_of_hits = 2;
  optional uint32 number_of_misses = 3;
  optional uint32 consecutive_misses = 4;
}

// Represents a mapping from URL or host to a list of redirect endpoints.
message RedirectData {
  // Main frame URL or host.
  optional string primary_key = 1;
  optional uint64 last_visit_time = 2;
  repeated RedirectStat redirect_endpoints = 3;
}

// Historical data for a single origin accessed from a host.
message OriginStat {
  optional string origin = 1;
  optional uint32 number_of_hits = 2;
  optional uint32 number_of_misses = 3;
  optional uint32 consecutive_misses = 4;
  optional double average_position = 5;
  optional bool always_access_network = 6;
  optional bool accessed_network = 7;
}

// Collection of origins accessed from a host.
message OriginData {
  optional string host = 1;
  optional uint64 last_visit_time = 2;
  repeated OriginStat origins = 3;
}