// Copyright 2012 Google Inc.
//
// 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.

// Author: snagori@google.com (Shrikant Nagori)
// Protobufs to store all information related to logging.
syntax = "proto2";

option optimize_for = LITE_RUNTIME;

import "pagespeed/kernel/http/image_types.proto";
import "pagespeed/opt/logging/enums.proto";

package net_instaweb;

// DEPRECATED.
message TimingInfo {
  // Local HTTP cache lookup time in ms.
  optional int64 cache1_ms = 1;
  // Remote HTTP cache lookup time in ms.
  optional int64 cache2_ms = 2;
  // Time taken to fetch the http header.
  optional int64 header_fetch_ms = 3;
  // Time taken by fastnet to fetch the entire resource.
  optional int64 fetch_ms = 4;
  // Time taken to send the first byte back to the client.
  optional int64 time_to_first_byte_ms = 5;
  // Absolute time when the request started, in ms since 1970.
  optional int64 request_start_ms = 6;
  // Time from the start of the request to when parsing begins. Note that this
  // is only set for HTML requests that are parsed.
  optional int64 time_to_start_parse_ms = 7;
  // Time from the start of the request to when the fetch is triggered. Note
  // that this is only set for requests that require a fetch.
  optional int64 time_to_start_fetch_ms = 8;
  // Time for processing the request, i.e. wall time when the response is fully
  // generated - request_start_ms - fetch_ms.
  optional int64 processing_time_ms = 9;
  // Time from start of request till we begin processing it.
  optional int64 time_to_start_processing_ms = 10;
  // Time from start of request till pcache lookup is started.
  optional int64 time_to_pcache_lookup_start_ms = 11;
  // Time from start of request till pcache lookup is completed.
  optional int64 time_to_pcache_lookup_end_ms = 12;
}

// This proto stores all Blink requests related information.  These are logged
// in the blink log record.
// Next id for BlinkInfo : 8
message BlinkInfo {
  enum BlinkRequestFlow {
    BLINK_CACHE_HIT = 1;
    BLINK_CACHE_MISS_FOUND_RESOURCE = 2;
    BLINK_CACHE_MISS_FETCH_NON_OK = 3;
    BLINK_CACHE_MISS_TRIGGERED_REWRITE = 4;
    FOUND_MALFORMED_HTML = 5;
    FOUND_LAST_STATUS_CODE_NON_OK = 6;
    FOUND_CONTENT_LENGTH_OVER_THRESHOLD = 7;
    // The following is only set in the main log record and not in the blink log
    // record.
    BLINK_BLACKLISTED = 8;  // Diff mismatch based blacklist active.
  };
  // Tracks the flow of a Blink request.  Set in main log record also.
  optional BlinkRequestFlow blink_request_flow = 1;

  // The event id of the user request for which blink flow was triggered.
  // To parse this field, refer:
  // net/instaweb/util/public/string_util.h#StringToInt64
  optional string request_event_id_time_usec = 2;

  // Tracks whether html change detection full-diff found a match or not.
  optional bool html_match = 3;

  enum UserAgent {
    NOT_SET = 0;
    BLINK_DESKTOP_WHITELIST = 1;
    BLINK_DESKTOP_BLACKLIST = 2;
    BLINK_MOBILE = 3;
    NULL_OR_EMPTY = 4;
    NOT_SUPPORT_BLINK = 5;
  };
  // user agent which initiated the blink request.  This is set only in main log
  // record and not in blink log record.
  optional UserAgent blink_user_agent = 4;

  // URL of the request.
  optional string url = 5;

  // Tracks whether html change detection smart-diff found a match or not.
  optional bool html_smart_diff_match = 6;

  // Tracks whether we hit the #mismatches threshold for blacklisting.
  optional bool mismatch_blacklist_threshold_exceeded = 7;
}

// This proto stores information related to metadata cache lookups and
// rewriting.
// Next id for MetadataCacheInfo: 10
message MetadataCacheInfo {
  // Number of hits.
  optional int32 num_hits = 1;
  // Number of "can revalidates".
  optional int32 num_revalidates = 2;
  // Number of misses.
  optional int32 num_misses = 3;

  // The following fields are only for rewriting from HTML parse flow.

  // The number of times we successfully revalidated an expired metadata within
  // the rewrite deadline.  This will be 0 if
  // metadata_cache_staleness_threshold_ms is >0.  Will be <= num_revalidates
  optional int32 num_successful_revalidates = 4;
  // The number of times we successfully fetched and rewrote a resource (when
  // metadata cache gave a miss) within the rewrite deadline.  Will be <=
  // num_misses.
  optional int32 num_successful_rewrites_on_miss = 5;
  // The number of times an expired resource metadata was used (as stale).  This
  // will be 0 unless metadata_cache_staleness_threshold_ms flag has a value >0.
  // Will be <= num_hits.
  optional int32 num_stale_rewrites = 6;
  // Total number of rewrites that were completed in the rewrite deadline.
  optional int32 num_rewrites_completed = 7;
  // Number of rewrites that were disabled and hence no cache lookps were done.
  optional int32 num_disabled_rewrites = 8;
  // Number of rewrites that were repeats and hence a previous result was used
  // (no cache lookps were done).
  optional int32 num_repeated_rewrites = 9;
}

message RewritingInfo {
}

// This proto stores all information related to split_html.
// Next id for SplitHtmlInfo : 2
message SplitHtmlInfo {
  // Total size of below-the-fold JSON.
  optional int64 json_size = 1;
}

// This proto stores all information related to property cohorts.
// Next is for PropertyCohortInfo: 7
message PropertyCohortInfo {
  // The name of the property cohort.
  optional string name = 1;
  // Whether the cohort was found in the cache
  optional bool is_cache_hit = 2 [ default = false ];
  // The list of properties that were found in the cache.
  repeated string properties_found = 3;
  // The device type for which this cohort was looked up.
  // Refer to net/instaweb/http/public/user_agent_matcher.h to see what the
  // different values map to.
  optional int32 device_type = 4;
  // The cache type for which this cohort was looked up.
  // Refer to third_party/pagespeed/automatic/proxy_fetch.h to see what
  // the different values map to.
  optional int32 cache_type = 5;
  // Cache result defined as CacheInterface::KeyState in
  // net/instaweb/util/public/cache_interface.h.
  optional int32 cache_key_state = 6;
}

// This proto stores information related to property cache lookups.
// Next id for PropertyPageInfo: 2
message PropertyPageInfo {
  repeated PropertyCohortInfo cohort_info = 1;
}

// Information related to flush subresources filter.
// Next id for FlushEarlyFlowInfo: 2
message FlushEarlyFlowInfo {
  // An estimate of the time available at the client to download resources
  // before it starts receiving html content.
  optional int64 available_time_ms = 1;
}

// Information related to each resource url considered by the flush subresources
// filter.
// Next id for FlushEarlyResourceInfo: 5
message FlushEarlyResourceInfo {
  enum ResourceType {
    UNKNOWN_TYPE = 0;
    PAGESPEED = 1;
    NON_PAGESPEED = 2;
    PRIVATE_CACHEABLE = 3;
    DEFERJS_SCRIPT = 4;
    PUBLIC_CACHEABLE = 5;
  }

  enum ContentType {
    UNKNOWN_CONTENT_TYPE = 0;
    IMAGE = 1;
    JS = 2;
    CSS = 3;
  }

  // Content type of the resource.
  optional ContentType content_type = 1;
  // Type of the resource based on url and its cache ttl.
  optional ResourceType resource_type = 2;
  // Is this resource affected by available bandwidth?
  optional bool is_bandwidth_affected = 3;
  // Is the resource in HEAD or BODY?
  optional bool in_head = 4;
}

// This proto stores information about the critical CSS filter.
// Next id for CriticalCssInfo: 4
message CriticalCssInfo {
  // Number of bytes of uncompressed critical CSS inlined for one HTML page.
  optional int64 critical_inlined_bytes = 1;
  // Number of bytes of uncompressed external CSS (flattened) that corresponds
  // to the inlined critical CSS.
  optional int64 original_external_bytes = 2;
  // Number of bytes of critical CSS inlined plus inline blocks copied
  // to the full CSS load at the bottom of the page.
  // Does count the mark-up nor the JavaScript added.
  optional int64 overhead_bytes = 3;
}

// This proto stores all Cache Html flow requests related information.
// Next id for CacheHtmlLoggingInfo : 8
message CacheHtmlLoggingInfo {
  enum CacheHtmlRequestFlow {
    CACHE_HTML_HIT = 1;
    CACHE_HTML_MISS_FOUND_RESOURCE = 2;
    CACHE_HTML_MISS_FETCH_NON_OK = 3;
    CACHE_HTML_MISS_TRIGGERED_REWRITE = 4;
    FOUND_MALFORMED_HTML = 5;
    FOUND_CONTENT_LENGTH_OVER_THRESHOLD = 6;
    // The following is only set in the main log record and not in the cache
    // html info log record.
    CACHE_HTML_BLACKLISTED = 7;  // Diff mismatch based blacklist active.
  };
  // Tracks the flow of a cache html rewriter request.
  optional CacheHtmlRequestFlow cache_html_request_flow = 1;

  // The event id of the user request for which cache html flow was triggered.
  optional string request_event_id_time_usec = 2;

  // Tracks whether html change detection full-diff found a match or not.
  optional bool html_match = 3;

  // Tracks whether html change detection smart-diff found a match or not.
  optional bool html_smart_diff_match = 4;

  // URL of the request.
  optional string url = 5;

  enum UserAgent {
    NOT_SET = 0;
    CACHE_HTML_DESKTOP_WHITELIST = 1;
    CACHE_HTML_DESKTOP_BLACKLIST = 2;
    CACHE_HTML_MOBILE = 3;
    NULL_OR_EMPTY = 4;
    NOT_SUPPORT_CACHE_HTML = 5;
  };
  // user agent which initiated the cache html request.
  // This is set only in main log record and not in cache html info log record.
  optional UserAgent cache_html_user_agent = 6;

  // Tracks whether we hit the #mismatches threshold for blacklisting.
  optional bool mismatch_blacklist_threshold_exceeded = 7;
}

// Information that applies to a resource.
// Next id for RewriteResourceInfo: 9
message RewriteResourceInfo {
  // True if we inlined the resource.
  optional bool is_inlined = 1 [ default = false ];
  // True if the resource is critical.
  optional bool is_critical = 2 [ default = false ];
  // True if the resource has a pagespeed_no_defer attribute.
  optional bool has_pagespeed_no_defer = 3 [ default = false ];
  // True if the resource is blacklisted.
  optional bool is_blacklisted = 4 [ default = false ];
   // Index of the original resource url in resource url info.
  optional int32 original_resource_url_index = 5 [ default = -1 ];
  // Size (in bytes) of the original resource.
  optional int32 original_size = 6 [ default = 0 ];
  // Size (in bytes) of the optimized resource.
  optional int32 optimized_size = 7 [ default = 0 ];
  // True if the resource has been recompressed.
  optional bool is_recompressed = 8 [ default = false ];
}

// Information related to each resource considered by the image rewrite filter.
// Next id for ImageRewriteResourceInfo: 11
message ImageRewriteResourceInfo {
  // True if the low_res_src html attribute was inserted.
  optional bool is_low_res_src_inserted = 1 [ default = false ];
  // Size of the low resolution image. If it is zero, the low res image was not
  // found.
  optional int32 low_res_size = 2 [ default = 0 ];
  // Type of the original image.
  optional net_instaweb.ImageType original_image_type = 3
      [ default = IMAGE_UNKNOWN ];
  // Type of the optimized image.
  optional net_instaweb.ImageType optimized_image_type = 4
      [ default = IMAGE_UNKNOWN ];
  // True if the image has been resized.
  optional bool is_resized = 5 [ default = false ];
  // Original height.
  optional int32 original_height = 6 [default = 0];
  // Original Width.
  optional int32 original_width = 7 [default = 0];
  // True if the image has been resized using rendered_dimensions.
  optional bool is_resized_using_rendered_dimensions = 8 [ default = false ];
  // Resized height.
  optional int32 resized_height = 9 [default = 0 ];
  // Resized width.
  optional int32 resized_width = 10 [default = 0 ];
}

// This proto stores information describing each rewriter's activity in a
// request.
// Next id for RewriterInfo: 5
message RewriterInfo {
  // The rewriter's id.
  optional string id = 1;
  // Status of this rewriter application.
  // TODO(gee): Remove this package hack.  This is only necessary for the
  // logging_non_lite_proto build rule.
  optional net_instaweb.RewriterApplication.Status status = 2;
  // Flush subresources specific information.
  optional FlushEarlyResourceInfo flush_early_resource_info = 3;
  // Information about a resource.
  optional RewriteResourceInfo rewrite_resource_info = 4;
  // Image rewrite filter specific information.
  optional ImageRewriteResourceInfo image_rewrite_resource_info = 5;
}

// This proto stores all information which related to resource urls.
// Next id for ResourceUrlInfo: 2
message ResourceUrlInfo {
  repeated string url = 1;
}

// Statistics related to images on the HTML page.
// Next id for ImageStats: 3
message ImageStats {
  // Number of img tags in the page.
  optional int32 num_img_tags = 1;
  // Number of img tags in the page which have inlined data.
  optional int32 num_inlined_img_tags = 2;
}

message RewriteStatusCount {
  // Application status.
  optional net_instaweb.RewriterApplication.Status application_status = 1;
  // Count for status.
  optional int32 count = 2;
}

message RewriterStats {
  // The rewriter's id. This is a two character string indicating the rewrite
  // filter used (e.g. "ic" for image compression) on the resource while
  // proxying the HTML page.
  optional string id = 1;

  // Status of rewriter at the Html page level.
  optional net_instaweb.RewriterHtmlApplication.Status html_status = 2;

  // Status of rewriter applications on resources.
  repeated RewriteStatusCount status_counts = 3;
}

// Information about the device making the request.
// Next id for DeviceInfo: 11
message DeviceInfo {
  // Refer to UserAgentMatcher::DeviceType to interpret this field.
  optional int32 device_type = 1;
  // Is image inlining supported.
  optional bool supports_image_inlining = 2;
  // Is lazyload images supported.
  optional bool supports_lazyload_images = 3;
  // Is critical images beacon supported.
  optional bool supports_critical_images_beacon = 4;
  // Is defer javascript supported.
  optional bool supports_deferjs = 5;
  // Is webp supported.
  optional bool supports_webp = 6;
  // Is webp lossless with alpha supported.
  optional bool supports_webplossless_alpha = 7;
  // Is the useragent a bot.
  optional bool is_bot = 8;
  // Is split html supported.
  optional bool supports_split_html = 9;
  // Is flush early supported.
  optional bool can_preload_resources = 10;
}

// This proto stores all information which we would like to log.
// Next id for LoggingInfo: 26
message LoggingInfo {
  // Stores all Blink related information.
  optional BlinkInfo blink_info = 2;
  // Sorted list of applied rewriter ids separated by comma.
  optional string applied_rewriters = 3;
  // Metadata cache info.
  optional MetadataCacheInfo metadata_cache_info = 4;
  // Whether the original resource is cacheable.
  optional bool is_original_resource_cacheable = 5 [ default = true ];
  // Experiment ID used for this request.
  optional int32 experiment_id = 6;
  // All information related to split_html.
  optional SplitHtmlInfo split_html_info = 7;
  // All information related to the pcache lookup.
  optional PropertyPageInfo property_page_info = 8;
  // Rewriter information for this request.
  repeated RewriterInfo rewriter_info = 9;
  // Rewriter statistics for this request.
  repeated RewriterStats rewriter_stats = 22;
  // Whether the response is HTML.
  optional bool is_html_response = 10 [ default = false ];
  // Whether request URL is disallowed.
  optional bool is_url_disallowed = 11 [ default = false ];
  // RewriteOptions signature hash.
  optional int64 options_signature_hash = 12;
  // Whether request is disabled like PageSpeed=off.
  optional bool is_request_disabled = 13 [ default = false ];
  // Information about flush subresources filter.
  optional FlushEarlyFlowInfo flush_early_flow_info = 14;
  // Whether the size limit for rewriter_info was exceeded.
  optional bool rewriter_info_size_limit_exceeded = 15 [ default = false ];
  // Whether the request is for a pagespeed resource.
  optional bool is_pagespeed_resource = 16 [ default = false ];
  // Information about the resource urls seen on this page.
  optional ResourceUrlInfo resource_url_info = 17;
  // Stores all Cache Html flow related information.
  optional CacheHtmlLoggingInfo cache_html_logging_info = 18;
  // Number of critical images on the page. The default is -1 to easily
  // differentiate between the field being unset and there being no critical
  // images.
  optional int32 num_html_critical_images = 19 [ default = -1 ];
  // Number of critical images in CSS referenced by the page. The default is -1
  // to easily differentiate between the field being unset and there being no
  // critical images.
  optional int32 num_css_critical_images = 20 [ default = -1 ];
  // Statistics related to images on the HTML page.
  optional ImageStats image_stats = 21;
  // Critical CSS info for this request.
  optional CriticalCssInfo critical_css_info = 23;
  // Information about the device making the request.
  optional DeviceInfo device_info = 24;
  // Is the request an XmlHttpRequest.
  optional bool is_xhr = 25;

  // --- DEPRECATED FIELDS FOLLOW ---
  optional TimingInfo deprecated_timing_info = 1;
}