Deprecate Sherlock tool

This removes most of the things related to Sherlock.
Dependent gems and docs will be removed separately.

.rubocop_todo.yml

@@ -325,7 +325,6 @@ Performance/Sum:
     - 'lib/container_registry/tag.rb'
     - 'lib/gitlab/ci/reports/test_suite_comparer.rb'
     - 'lib/gitlab/diff/file.rb'
-    - 'lib/gitlab/sherlock/transaction.rb'
     - 'lib/gitlab/usage_data.rb'
     - 'lib/peek/views/detailed_view.rb'
     - 'spec/models/namespace/root_storage_statistics_spec.rb'

.rubocop_todo/database/multiple_databases.yml

@@ -26,7 +26,6 @@ Database/MultipleDatabases:
   - lib/gitlab/import_export/group/relation_tree_restorer.rb
   - lib/gitlab/legacy_github_import/importer.rb
   - lib/gitlab/seeder.rb
-  - lib/gitlab/sherlock/query.rb
   - lib/system_check/orphans/repository_check.rb
   - spec/db/schema_spec.rb
   - spec/initializers/database_config_spec.rb

.rubocop_todo/rails/time_zone.yml

@@ -76,7 +76,6 @@ Rails/TimeZone:
   - lib/gitlab/prometheus/queries/additional_metrics_environment_query.rb
   - lib/gitlab/prometheus/queries/matched_metric_query.rb
   - lib/gitlab/prometheus_client.rb
-  - lib/gitlab/sherlock/transaction.rb
   - lib/gitlab/task_helpers.rb
   - lib/gitlab/x509/tag.rb
   - lib/grafana/time_window.rb
@@ -141,7 +140,6 @@ Rails/TimeZone:
   - spec/lib/gitlab/prometheus/queries/additional_metrics_deployment_query_spec.rb
   - spec/lib/gitlab/prometheus/queries/deployment_query_spec.rb
   - spec/lib/gitlab/prometheus/queries/validate_query_spec.rb
-  - spec/lib/gitlab/sherlock/transaction_spec.rb
   - spec/lib/gitlab/sidekiq_logging/json_formatter_spec.rb
   - spec/lib/gitlab/sidekiq_middleware/duplicate_jobs/strategies/until_executing_spec.rb
   - spec/lib/gitlab/updated_notes_paginator_spec.rb

app/assets/stylesheets/_page_specific_files.scss

@@ -28,7 +28,6 @@
 @import './pages/service_desk';
 @import './pages/settings';
 @import './pages/settings_ci_cd';
-@import './pages/sherlock';
 @import './pages/storage_quota';
 @import './pages/tree';
 @import './pages/users';

app/assets/stylesheets/pages/sherlock.scss

-table .sherlock-code {
-  max-width: 700px;
-}
-
-.sherlock-code {
-  pre {
-    word-wrap: normal;
-
-    code {
-      white-space: pre;
-    }
-  }
-}
-
-.sherlock-line-samples-table {
-  thead th,
-  tbody td {
-    font-size: 13px !important;
-    text-align: right;
-    padding: 0 10px !important;
-  }
-
-  .slow {
-    color: $red-500;
-    font-weight: $gl-font-weight-bold;
-  }
-}
-
-.sherlock-file-sample pre {
-  padding-top: 28px !important;
-}

app/controllers/sherlock/application_controller.rb

-# frozen_string_literal: true
-
-module Sherlock
-  class ApplicationController < ::ApplicationController
-    before_action :find_transaction
-
-    def find_transaction
-      if params[:transaction_id]
-        @transaction = Gitlab::Sherlock.collection
-          .find_transaction(params[:transaction_id])
-      end
-    end
-  end
-end

app/controllers/sherlock/file_samples_controller.rb

-# frozen_string_literal: true
-
-module Sherlock
-  class FileSamplesController < Sherlock::ApplicationController
-    def show
-      @file_sample = @transaction.find_file_sample(params[:id])
-    end
-  end
-end

app/controllers/sherlock/queries_controller.rb

-# frozen_string_literal: true
-
-module Sherlock
-  class QueriesController < Sherlock::ApplicationController
-    def show
-      @query = @transaction.find_query(params[:id])
-    end
-  end
-end

app/controllers/sherlock/transactions_controller.rb

-# frozen_string_literal: true
-
-module Sherlock
-  class TransactionsController < Sherlock::ApplicationController
-    def index
-      @transactions = Gitlab::Sherlock.collection.newest_first
-    end
-
-    def show
-      @transaction = Gitlab::Sherlock.collection.find_transaction(params[:id])
-
-      render_404 unless @transaction
-    end
-
-    def destroy_all
-      Gitlab::Sherlock.collection.clear
-
-      redirect_back_or_default(options: { status: :found })
-    end
-  end
-end

app/helpers/nav/top_nav_helper.rb

@@ -189,15 +189,6 @@ module Nav
         end
       end
       # rubocop: enable Cop/UserAdmin
-
-      if Gitlab::Sherlock.enabled?
-        builder.add_secondary_menu_item(
-          id: 'sherlock',
-          title: _('Sherlock Transactions'),
-          icon: 'admin',
-          href: sherlock_transactions_path
-        )
-      end
     end
 
     def projects_menu_item_attrs

app/helpers/nav_helper.rb

@@ -46,10 +46,6 @@ module NavHelper
     class_names
   end
 
-  def has_extra_nav_icons?
-    Gitlab::Sherlock.enabled? || current_user.admin?
-  end
-
   def page_has_markdown?
     current_path?('merge_requests#show') ||
       current_path?('projects/merge_requests/conflicts#show') ||

app/views/sherlock/file_samples/show.html.haml

-- page_title t('sherlock.title'), t('sherlock.transaction'),
-  t('sherlock.file_sample')
-
-- header_title t('sherlock.title'), sherlock_transactions_path
-
-.row-content-block
-  .float-right
-    = link_to(sherlock_transaction_path(@transaction), class: 'btn gl-button') do
-      = sprite_icon('arrow-left')
-      = t('sherlock.transaction')
-  .oneline
-    = t('sherlock.file_sample')
-    = @file_sample.id
-
-.gl-mt-3
-  %p
-    %span.light
-      #{t('sherlock.time')}:
-    %strong
-      = @file_sample.duration.round(2)
-      = t('sherlock.milliseconds')
-  %p
-    %span.light
-      #{t('sherlock.events')}:
-    %strong
-      = @file_sample.events
-
-%article.file-holder
-  .js-file-title.file-title
-    = sprite_icon("doc-text")
-    %strong
-      = @file_sample.file
-  .code.file-content.js-syntax-highlight
-    .line-numbers
-      %table.sherlock-line-samples-table.gl-mb-0
-        %thead
-          %tr
-            %th= t('sherlock.line_capitalized')
-            %th= t('sherlock.events')
-            %th= t('sherlock.time')
-            %th= t('sherlock.percent')
-        %tbody
-          - @file_sample.line_samples.each_with_index do |sample, index|
-            %tr{ class: sample.majority_of?(@file_sample.duration) ? 'slow' : '' }
-              %td= index + 1
-              %td= sample.events
-              %td
-                = sample.duration.round(2)
-                = t('sherlock.milliseconds')
-              %td
-                = sample.percentage_of(@file_sample.duration).round
-                = t('sherlock.percent')
-
-    .sherlock-file-sample
-      = highlight(@file_sample.file, @file_sample.source)

app/views/sherlock/queries/_backtrace.html.haml

-.gl-mt-3
-  .card
-    .card-header
-      %strong
-        = t('sherlock.application_backtrace')
-    %ul.content-list
-      - @query.application_backtrace.each do |location|
-        %li
-          %strong
-            - if defined?(BetterErrors)
-              = link_to(location.path, BetterErrors.editor.url(location.path, location.line))
-            - else
-              = location.path
-          %small.light
-            = t('sherlock.line')
-            = location.line
-
-  .card
-    .card-header
-      %strong
-        = t('sherlock.full_backtrace')
-    %ul.content-list
-      - @query.backtrace.each do |location|
-        %li
-          - if location.application?
-            %strong= location.path
-          - else
-            = location.path
-          %small.light
-            = t('sherlock.line')
-            = location.line

app/views/sherlock/queries/_general.html.haml

-.gl-mt-3
-  .card
-    .card-header
-      %strong
-        = t('sherlock.general')
-    %ul.content-list
-      %li
-        %span.light
-          #{t('sherlock.time')}:
-        %strong
-          = @query.duration.round(4)
-          = t('sherlock.milliseconds')
-      %li
-        - frame = @query.last_application_frame
-        %span.light
-          #{t('sherlock.origin')}:
-        %strong
-          - if defined?(BetterErrors)
-            = link_to(frame.path, BetterErrors.editor.url(frame.path, frame.line))
-          - else
-            = frame.path
-        %small.light
-          = t('sherlock.line')
-          = frame.line
-
-  .card
-    .card-header
-      .float-right
-        %button.js-clipboard-trigger.gl-button.btn.btn-default.btn-sm{ title: t('sherlock.copy_to_clipboard'), type: :button }
-          = sprite_icon('copy-to-clipboard')
-        %pre.hidden
-          = @query.formatted_query
-      %strong
-        = t('sherlock.query')
-    %ul.content-list
-      %li
-        .code.js-syntax-highlight.sherlock-code
-          :preserve
-            #{highlight("#{@query.id}.sql", @query.formatted_query, language: 'sql')}
-
-  .card
-    .card-header
-      .float-right
-        %button.js-clipboard-trigger.gl-button.btn.btn-default.btn-sm{ title: t('sherlock.copy_to_clipboard'), type: :button }
-          = sprite_icon('copy-to-clipboard')
-        %pre.hidden
-          = @query.explain
-      %strong
-        = t('sherlock.query_plan')
-    %ul.content-list
-      %li
-        .code.js-syntax-highlight.sherlock-code
-          %pre
-            %code= @query.explain

app/views/sherlock/queries/show.html.haml

-- page_title t('sherlock.title'), t('sherlock.transaction'), t('sherlock.query')
-- header_title t('sherlock.title'), sherlock_transactions_path
-
-%ul.nav-links.nav.nav-tabs
-  %li.active
-    %a{ href: "#tab-general", data: { toggle: "tab" } }
-      = t('sherlock.general')
-  %li
-    %a{ href: "#tab-backtrace", data: { toggle: "tab" } }
-      = t('sherlock.backtrace')
-
-.row-content-block
-  .float-right
-    = link_to(sherlock_transaction_path(@transaction), class: 'btn gl-button btn-default') do
-      = sprite_icon('arrow-left')
-      = t('sherlock.transaction')
-  .oneline
-    = t('sherlock.query')
-    = @query.id
-
-.tab-content
-  .tab-pane.active#tab-general
-    = render(partial: 'general')
-
-  .tab-pane#tab-backtrace
-    = render(partial: 'backtrace')

app/views/sherlock/transactions/_file_samples.html.haml

-- if @transaction.file_samples.empty?
-  .nothing-here-block
-    = t('sherlock.no_file_samples')
-- else
-  .table-holder
-    %table.table
-      %thead
-        %tr
-          %th= t('sherlock.time_inclusive')
-          %th= t('sherlock.count')
-          %th= t('sherlock.path')
-          %th
-      %tbody
-        - @transaction.sorted_file_samples.each do |sample|
-          %tr
-            %td
-              = sample.duration.round(2)
-              = t('sherlock.milliseconds')
-            %td= @transaction.view_counts.fetch(sample.file, 1)
-            %td= sample.relative_path
-            %td
-              = link_to(t('sherlock.view'),
-                sherlock_transaction_file_sample_path(@transaction, sample),
-                class: 'gl-button btn btn-sm')

app/views/sherlock/transactions/_general.html.haml

-.gl-mt-3
-  .card
-    .card-header
-      %strong
-        = t('sherlock.general')
-    %ul.content-list
-      %li
-        %span.light
-          #{t('sherlock.id')}:
-        %strong
-          = @transaction.id
-      %li
-        %span.light
-          #{t('sherlock.type')}:
-        %strong
-          = @transaction.type
-      %li
-        %span.light
-          #{t('sherlock.path')}:
-        %strong
-          = @transaction.path
-      %li
-        %span.light
-          #{t('sherlock.time')}:
-        %strong
-          = @transaction.duration.round(2)
-          = t('sherlock.seconds')
-      %li
-        %span.light
-          #{t('sherlock.query_time')}
-        %strong
-          = @transaction.query_duration.round(2)
-          = t('sherlock.seconds')
-      %li
-        %span.light
-          #{t('sherlock.finished_at')}:
-        %strong
-          = time_ago_with_tooltip @transaction.finished_at

app/views/sherlock/transactions/_queries.html.haml

-- if @transaction.queries.empty?
-  .nothing-here-block
-    = t('sherlock.no_queries')
-- else
-  .table-holder
-    %table.table#sherlock-queries
-      %thead
-        %tr
-          %th= t('sherlock.time')
-          %th= t('sherlock.query')
-          %th
-      %tbody
-        - @transaction.sorted_queries.each do |query|
-          %tr
-            %td
-              = query.duration.round(2)
-              = t('sherlock.milliseconds')
-            %td
-              .code.js-syntax-highlight.sherlock-code
-                = highlight("#{query.id}.sql", query.formatted_query, language: 'sql')
-            %td
-              = link_to(t('sherlock.view'),
-                sherlock_transaction_query_path(@transaction, query),
-                class: 'gl-button btn btn-sm')

app/views/sherlock/transactions/index.html.haml

-- page_title t('sherlock.title')
-- header_title t('sherlock.title'), sherlock_transactions_path
-
-.row-content-block
-  .float-right
-    = link_to(destroy_all_sherlock_transactions_path,
-      class: 'gl-button btn btn-danger',
-      method: :delete) do
-      = sprite_icon('remove')
-      = t('sherlock.delete_all_transactions')
-  .oneline= t('sherlock.introduction')
-
-- if @transactions.empty?
-  .nothing-here-block= t('sherlock.no_transactions')
-- else
-  .table-holder
-    %table.table
-      %thead
-        %tr
-          %th= t('sherlock.type')
-          %th= t('sherlock.path')
-          %th= t('sherlock.time')
-          %th= t('sherlock.queries')
-          %th= t('sherlock.finished_at')
-          %th
-      %tbody
-        - @transactions.each do |trans|
-          %tr
-            %td= trans.type
-            %td
-              %span{ title: trans.path }
-                = truncate(trans.path, length: 70)
-            %td
-              = trans.duration.round(2)
-              = t('sherlock.seconds')
-            %td= trans.queries.length
-            %td
-              = time_ago_with_tooltip trans.finished_at
-            %td
-              = link_to(sherlock_transaction_path(trans), class: 'gl-button btn btn-sm') do
-                = t('sherlock.view')

app/views/sherlock/transactions/show.html.haml

-- page_title t('sherlock.title'), t('sherlock.transaction')
-- header_title t('sherlock.title'), sherlock_transactions_path
-
-%ul.nav-links.nav.nav-tabs
-  %li.active
-    %a{ href: "#tab-general", data: { toggle: "tab" } }
-      = t('sherlock.general')
-  %li
-    %a{ href: "#tab-queries", data: { toggle: "tab" } }
-      = t('sherlock.queries')
-      = gl_badge_tag @transaction.queries.length.to_s
-  %li
-    %a{ href: "#tab-file-samples", data: { toggle: "tab" } }
-      = t('sherlock.file_samples')
-      = gl_badge_tag @transaction.file_samples.length.to_s
-
-.row-content-block
-  .float-right
-    = link_to(sherlock_transactions_path, class: 'gl-button btn') do
-      = sprite_icon('arrow-left', css_class: 'gl-mr-3')
-      = t('sherlock.all_transactions')
-  .oneline
-    = t('sherlock.transaction')
-    = @transaction.id
-
-.tab-content
-  .tab-pane.active#tab-general
-    = render(partial: 'general')
-
-  .tab-pane#tab-queries
-    = render(partial: 'queries')
-
-  .tab-pane#tab-file-samples
-    = render(partial: 'file_samples')

config/initializers/sherlock.rb

-# frozen_string_literal: true
-
-if Gitlab::Sherlock.enabled?
-  Rails.application.configure do |config|
-    config.middleware.use(Gitlab::Sherlock::Middleware)
-  end
-end

config/locales/sherlock.en.yml

-en:
-  sherlock:
-    title: Sherlock
-    delete_all_transactions: Delete All Transactions
-    introduction: >
-      Below is a list of all transactions recorded by Sherlock. Requests to
-      Sherlock's own routes are ignored.
-    no_transactions: No transactions to show
-    no_queries: No queries to show
-    no_file_samples: No file samples to show
-    all_transactions: All Transactions
-    transaction: Transaction
-    query: Query
-    file_sample: File Sample
-    type: Type
-    path: Path
-    time: Time
-    queries: Queries
-    finished_at: Finished at
-    ago: ago
-    view: View
-    seconds: seconds
-    milliseconds: ms
-    general: General
-    id: ID
-    time_inclusive: Time (inclusive)
-    backtrace: Backtrace
-    application_backtrace: Application Backtrace
-    full_backtrace: Full Backtrace
-    origin: Origin
-    line: line
-    line_capitalized: Line
-    copy_to_clipboard: Copy
-    query_plan: Query Plan
-    events: Events
-    percent: '%'
-    count: Count
-    query_time: Query Time

config/routes.rb

@@ -20,7 +20,6 @@ Rails.application.routes.draw do
   get 'favicon.png', to: favicon_redirect
   get 'favicon.ico', to: favicon_redirect
 
-  draw :sherlock
   draw :development
 
   use_doorkeeper do

config/routes/sherlock.rb

-# frozen_string_literal: true
-
-if Gitlab::Sherlock.enabled?
-  namespace :sherlock do
-    resources :transactions, only: [:index, :show] do
-      resources :queries, only: [:show]
-      resources :file_samples, only: [:show]
-
-      collection do
-        delete :destroy_all
-      end
-    end
-  end
-end

ee/app/helpers/ee/nav_helper.rb

@@ -4,11 +4,6 @@ module EE
   module NavHelper
     extend ::Gitlab::Utils::Override
 
-    override :has_extra_nav_icons?
-    def has_extra_nav_icons?
-      super || can?(current_user, :read_operations_dashboard)
-    end
-
     override :page_has_markdown?
     def page_has_markdown?
       super || current_path?('epics#show')

lib/gitlab/sherlock.rb

-# frozen_string_literal: true
-
-require 'securerandom'
-
-module Gitlab
-  module Sherlock
-    @collection = Collection.new
-
-    class << self
-      attr_reader :collection
-    end
-
-    def self.enabled?
-      Rails.env.development? && !!ENV['ENABLE_SHERLOCK']
-    end
-
-    def self.enable_line_profiler?
-      RUBY_ENGINE == 'ruby'
-    end
-  end
-end

lib/gitlab/sherlock/collection.rb

-# frozen_string_literal: true
-
-module Gitlab
-  module Sherlock
-    # A collection of transactions recorded by Sherlock.
-    #
-    # Method calls for this class are synchronized using a mutex to allow
-    # sharing of a single Collection instance between threads (e.g. when using
-    # Puma as a webserver).
-    class Collection
-      include Enumerable
-
-      def initialize
-        @transactions = []
-        @mutex = Mutex.new
-      end
-
-      def add(transaction)
-        synchronize { @transactions << transaction }
-      end
-
-      alias_method :<<, :add
-
-      def each(&block)
-        synchronize { @transactions.each(&block) }
-      end
-
-      def clear
-        synchronize { @transactions.clear }
-      end
-
-      def empty?
-        synchronize { @transactions.empty? }
-      end
-
-      def find_transaction(id)
-        find { |trans| trans.id == id }
-      end
-
-      def newest_first
-        sort { |a, b| b.finished_at <=> a.finished_at }
-      end
-
-      private
-
-      def synchronize(&block)
-        @mutex.synchronize(&block)
-      end
-    end
-  end
-end

lib/gitlab/sherlock/file_sample.rb

-# frozen_string_literal: true
-
-module Gitlab
-  module Sherlock
-    class FileSample
-      attr_reader :id, :file, :line_samples, :events, :duration
-
-      # file - The full path to the file this sample belongs to.
-      # line_samples - An array of LineSample objects.
-      # duration - The total execution time in milliseconds.
-      # events - The total amount of events.
-      def initialize(file, line_samples, duration, events)
-        @id = SecureRandom.uuid
-        @file = file
-        @line_samples = line_samples
-        @duration = duration
-        @events = events
-      end
-
-      def relative_path
-        @relative_path ||= @file.gsub(%r{^#{Rails.root}/?}, '')
-      end
-
-      def to_param
-        @id
-      end
-
-      def source
-        @source ||= File.read(@file)
-      end
-    end
-  end
-end

lib/gitlab/sherlock/line_profiler.rb

-# frozen_string_literal: true
-
-module Gitlab
-  module Sherlock
-    # Class for profiling code on a per line basis.
-    #
-    # The LineProfiler class can be used to profile code on per line basis
-    # without littering your code with Ruby implementation specific profiling
-    # methods.
-    #
-    # This profiler only includes samples taking longer than a given threshold
-    # and those that occur in the actual application (e.g. files from Gems are
-    # ignored).
-    class LineProfiler
-      # The minimum amount of time that has to be spent in a file for it to be
-      # included in a list of samples.
-      MINIMUM_DURATION = 10.0
-
-      # Profiles the given block.
-      #
-      # Example:
-      #
-      #     profiler = LineProfiler.new
-      #
-      #     retval, samples = profiler.profile do
-      #       "cats are amazing"
-      #     end
-      #
-      #     retval  # => "cats are amazing"
-      #     samples # => [#<Gitlab::Sherlock::FileSample ...>, ...]
-      #
-      # Returns an Array containing the block's return value and an Array of
-      # FileSample objects.
-      def profile(&block)
-        if mri?
-          profile_mri(&block)
-        else
-          raise NotImplementedError,
-            'Line profiling is not supported on this platform'
-        end
-      end
-
-      # Profiles the given block using rblineprof (MRI only).
-      def profile_mri
-        require 'rblineprof'
-
-        retval  = nil
-        samples = lineprof(/^#{Rails.root}/) { retval = yield }
-
-        file_samples = aggregate_rblineprof(samples)
-
-        [retval, file_samples]
-      end
-
-      # Returns an Array of file samples based on the output of rblineprof.
-      #
-      # lineprof_stats - A Hash containing rblineprof statistics on a per file
-      #                  basis.
-      #
-      # Returns an Array of FileSample objects.
-      def aggregate_rblineprof(lineprof_stats)
-        samples = []
-
-        lineprof_stats.each do |(file, stats)|
-          source_lines = File.read(file).each_line.to_a
-          line_samples = []
-
-          total_duration = microsec_to_millisec(stats[0][0])
-          total_events   = stats[0][2]
-
-          next if total_duration <= MINIMUM_DURATION
-
-          stats[1..].each_with_index do |data, index|
-            next unless source_lines[index]
-
-            duration = microsec_to_millisec(data[0])
-            events   = data[2]
-
-            line_samples << LineSample.new(duration, events)
-          end
-
-          samples << FileSample
-            .new(file, line_samples, total_duration, total_events)
-        end
-
-        samples
-      end
-
-      private
-
-      def microsec_to_millisec(microsec)
-        microsec / 1000.0
-      end
-
-      def mri?
-        RUBY_ENGINE == 'ruby'
-      end
-    end
-  end
-end

lib/gitlab/sherlock/line_sample.rb

-# frozen_string_literal: true
-
-module Gitlab
-  module Sherlock
-    class LineSample
-      attr_reader :duration, :events
-
-      # duration - The execution time in milliseconds.
-      # events - The amount of events.
-      def initialize(duration, events)
-        @duration = duration
-        @events = events
-      end
-
-      # Returns the sample duration percentage relative to the given duration.
-      #
-      # Example:
-      #
-      #     sample.duration            # => 150
-      #     sample.percentage_of(1500) # => 10.0
-      #
-      # total_duration - The total duration to compare with.
-      #
-      # Returns a float
-      def percentage_of(total_duration)
-        (duration.to_f / total_duration) * 100.0
-      end
-
-      # Returns true if the current sample takes up the majority of the given
-      # duration.
-      #
-      # total_duration - The total duration to compare with.
-      def majority_of?(total_duration)
-        percentage_of(total_duration) >= 30
-      end
-    end
-  end
-end

lib/gitlab/sherlock/location.rb

-# frozen_string_literal: true
-
-module Gitlab
-  module Sherlock
-    class Location
-      attr_reader :path, :line
-
-      SHERLOCK_DIR = File.dirname(__FILE__)
-
-      # Creates a new Location from a `Thread::Backtrace::Location`.
-      def self.from_ruby_location(location)
-        new(location.path, location.lineno)
-      end
-
-      # path - The full path of the frame as a String.
-      # line - The line number of the frame as a Fixnum.
-      def initialize(path, line)
-        @path = path
-        @line = line
-      end
-
-      # Returns true if the current frame originated from the application.
-      def application?
-        @path.start_with?(Rails.root.to_s) && !path.start_with?(SHERLOCK_DIR)
-      end
-    end
-  end
-end

lib/gitlab/sherlock/middleware.rb

-# frozen_string_literal: true
-
-module Gitlab
-  module Sherlock
-    # Rack middleware used for tracking request metrics.
-    class Middleware
-      CONTENT_TYPES = %r{text/html|application/json}i.freeze
-
-      IGNORE_PATHS = %r{^/sherlock}.freeze
-
-      def initialize(app)
-        @app = app
-      end
-
-      # env - A Hash containing Rack environment details.
-      def call(env)
-        if instrument?(env)
-          call_with_instrumentation(env)
-        else
-          @app.call(env)
-        end
-      end
-
-      def call_with_instrumentation(env)
-        trans = transaction_from_env(env)
-        retval = trans.run { @app.call(env) }
-
-        Sherlock.collection.add(trans)
-
-        retval
-      end
-
-      def instrument?(env)
-        !!(env['HTTP_ACCEPT'] =~ CONTENT_TYPES &&
-           env['REQUEST_URI'] !~ IGNORE_PATHS)
-      end
-
-      def transaction_from_env(env)
-        Transaction.new(env['REQUEST_METHOD'], env['REQUEST_URI'])
-      end
-    end
-  end
-end

lib/gitlab/sherlock/query.rb

-# frozen_string_literal: true
-
-module Gitlab
-  module Sherlock
-    class Query
-      attr_reader :id, :query, :started_at, :finished_at, :backtrace
-
-      # SQL identifiers that should be prefixed with newlines.
-      PREFIX_NEWLINE = %r{
-        \s+(FROM
-          |(LEFT|RIGHT)?INNER\s+JOIN
-          |(LEFT|RIGHT)?OUTER\s+JOIN
-          |WHERE
-          |AND
-          |GROUP\s+BY
-          |ORDER\s+BY
-          |LIMIT
-          |OFFSET)\s+}ix.freeze # Vim indent breaks when this is on a newline :<
-
-      # Creates a new Query using a String and a separate Array of bindings.
-      #
-      # query - A String containing a SQL query, optionally with numeric
-      #         placeholders (`$1`, `$2`, etc).
-      #
-      # bindings - An Array of ActiveRecord columns and their values.
-      # started_at - The start time of the query as a Time-like object.
-      # finished_at - The completion time of the query as a Time-like object.
-      #
-      # Returns a new Query object.
-      def self.new_with_bindings(query, bindings, started_at, finished_at)
-        bindings.each_with_index do |(_, value), index|
-          quoted_value = ActiveRecord::Base.connection.quote(value)
-
-          query = query.gsub("$#{index + 1}", quoted_value)
-        end
-
-        new(query, started_at, finished_at)
-      end
-
-      # query - The SQL query as a String (without placeholders).
-      # started_at - The start time of the query as a Time-like object.
-      # finished_at - The completion time of the query as a Time-like object.
-      def initialize(query, started_at, finished_at)
-        @id = SecureRandom.uuid
-        @query = query
-        @started_at = started_at
-        @finished_at = finished_at
-        @backtrace = caller_locations.map do |loc|
-          Location.from_ruby_location(loc)
-        end
-
-        unless @query.end_with?(';')
-          @query = "#{@query};"
-        end
-      end
-
-      # Returns the query duration in milliseconds.
-      def duration
-        @duration ||= (@finished_at - @started_at) * 1000.0
-      end
-
-      def to_param
-        @id
-      end
-
-      # Returns a human readable version of the query.
-      def formatted_query
-        @formatted_query ||= format_sql(@query)
-      end
-
-      # Returns the last application frame of the backtrace.
-      def last_application_frame
-        @last_application_frame ||= @backtrace.find(&:application?)
-      end
-
-      # Returns an Array of application frames (excluding Gems and the likes).
-      def application_backtrace
-        @application_backtrace ||= @backtrace.select(&:application?)
-      end
-
-      # Returns the query plan as a String.
-      def explain
-        unless @explain
-          ActiveRecord::Base.connection.transaction do
-            @explain = raw_explain(@query).values.flatten.join("\n")
-
-            # Roll back any queries that mutate data so we don't mess up
-            # anything when running explain on an INSERT, UPDATE, DELETE, etc.
-            raise ActiveRecord::Rollback
-          end
-        end
-
-        @explain
-      end
-
-      private
-
-      def raw_explain(query)
-        explain = "EXPLAIN ANALYZE #{query};"
-
-        ActiveRecord::Base.connection.execute(explain)
-      end
-
-      def format_sql(query)
-        query.each_line
-          .map { |line| line.strip }
-          .join("\n")
-          .gsub(PREFIX_NEWLINE) { "\n#{Regexp.last_match(1)} " }
-      end
-    end
-  end
-end

lib/gitlab/sherlock/transaction.rb

-# frozen_string_literal: true
-
-module Gitlab
-  module Sherlock
-    class Transaction
-      attr_reader :id, :type, :path, :queries, :file_samples, :started_at,
-        :finished_at, :view_counts
-
-      # type - The type of transaction (e.g. "GET", "POST", etc)
-      # path - The path of the transaction (e.g. the HTTP request path)
-      def initialize(type, path)
-        @id = SecureRandom.uuid
-        @type = type
-        @path = path
-        @queries = []
-        @file_samples = []
-        @started_at = nil
-        @finished_at = nil
-        @thread = Thread.current
-        @view_counts = Hash.new(0)
-      end
-
-      # Runs the transaction and returns the block's return value.
-      def run
-        @started_at = Time.now
-
-        retval = with_subscriptions do
-          profile_lines { yield }
-        end
-
-        @finished_at = Time.now
-
-        retval
-      end
-
-      # Returns the duration in seconds.
-      def duration
-        @duration ||= started_at && finished_at ? finished_at - started_at : 0
-      end
-
-      # Returns the total query duration in seconds.
-      def query_duration
-        @query_duration ||= @queries.map { |q| q.duration }.inject(:+) / 1000.0
-      end
-
-      def to_param
-        @id
-      end
-
-      # Returns the queries sorted in descending order by their durations.
-      def sorted_queries
-        @queries.sort { |a, b| b.duration <=> a.duration }
-      end
-
-      # Returns the file samples sorted in descending order by their durations.
-      def sorted_file_samples
-        @file_samples.sort { |a, b| b.duration <=> a.duration }
-      end
-
-      # Finds a query by the given ID.
-      #
-      # id - The query ID as a String.
-      #
-      # Returns a Query object if one could be found, nil otherwise.
-      def find_query(id)
-        @queries.find { |query| query.id == id }
-      end
-
-      # Finds a file sample by the given ID.
-      #
-      # id - The query ID as a String.
-      #
-      # Returns a FileSample object if one could be found, nil otherwise.
-      def find_file_sample(id)
-        @file_samples.find { |sample| sample.id == id }
-      end
-
-      def profile_lines
-        retval = nil
-
-        if Sherlock.enable_line_profiler?
-          retval, @file_samples = LineProfiler.new.profile { yield }
-        else
-          retval = yield
-        end
-
-        retval
-      end
-
-      def subscribe_to_active_record
-        ActiveSupport::Notifications.subscribe('sql.active_record') do |_, start, finish, _, data|
-          next unless same_thread?
-
-          unless data.fetch(:cached, data[:name] == 'CACHE')
-            track_query(data[:sql].strip, data[:binds], start, finish)
-          end
-        end
-      end
-
-      def subscribe_to_action_view
-        regex = /render_(template|partial)\.action_view/
-
-        ActiveSupport::Notifications.subscribe(regex) do |_, start, finish, _, data|
-          next unless same_thread?
-
-          track_view(data[:identifier])
-        end
-      end
-
-      private
-
-      def track_query(query, bindings, start, finish)
-        @queries << Query.new_with_bindings(query, bindings, start, finish)
-      end
-
-      def track_view(path)
-        @view_counts[path] += 1
-      end
-
-      def with_subscriptions
-        ar_subscriber = subscribe_to_active_record
-        av_subscriber = subscribe_to_action_view
-
-        retval = yield
-
-        ActiveSupport::Notifications.unsubscribe(ar_subscriber)
-        ActiveSupport::Notifications.unsubscribe(av_subscriber)
-
-        retval
-      end
-
-      # In case somebody uses a multi-threaded server locally (e.g. Puma) we
-      # _only_ want to track notifications that originate from the transaction
-      # thread.
-      def same_thread?
-        Thread.current == @thread
-      end
-    end
-  end
-end

locale/gitlab.pot

@@ -32850,9 +32850,6 @@ msgstr ""
 msgid "SharedRunnersMinutesSettings|Reset used pipeline minutes"
 msgstr ""
 
-msgid "Sherlock Transactions"
-msgstr ""
-
 msgid "Shimo|Go to Shimo Workspace"
 msgstr ""
 

spec/helpers/nav/top_nav_helper_spec.rb

@@ -20,7 +20,6 @@ RSpec.describe Nav::TopNavHelper do
     let(:current_group) { nil }
     let(:with_current_settings_admin_mode) { false }
     let(:with_header_link_admin_mode) { false }
-    let(:with_sherlock_enabled) { false }
     let(:with_projects) { false }
     let(:with_groups) { false }
     let(:with_milestones) { false }
@@ -34,7 +33,6 @@ RSpec.describe Nav::TopNavHelper do
     before do
       allow(Gitlab::CurrentSettings).to receive(:admin_mode) { with_current_settings_admin_mode }
       allow(helper).to receive(:header_link?).with(:admin_mode) { with_header_link_admin_mode }
-      allow(Gitlab::Sherlock).to receive(:enabled?) { with_sherlock_enabled }
 
       # Defaulting all `dashboard_nav_link?` calls to false ensures the EE-specific behavior
       # is not enabled in this CE spec
@@ -434,27 +432,6 @@ RSpec.describe Nav::TopNavHelper do
           expect(subject[:shortcuts]).to eq([expected_shortcuts])
         end
       end
-
-      context 'when sherlock is enabled' do
-        let(:with_sherlock_enabled) { true }
-
-        before do
-          # Note: We have to mock the sherlock route because the route is conditional on
-          # sherlock being enabled, but it parsed at Rails load time and can't be overridden
-          # in a spec.
-          allow(helper).to receive(:sherlock_transactions_path) { '/fake_sherlock_path' }
-        end
-
-        it 'has sherlock as last :secondary item' do
-          expected_sherlock_item = ::Gitlab::Nav::TopNavMenuItem.build(
-            id: 'sherlock',
-            title: 'Sherlock Transactions',
-            icon: 'admin',
-            href: '/fake_sherlock_path'
-          )
-          expect(subject[:secondary].last).to eq(expected_sherlock_item)
-        end
-      end
     end
 
     context 'when current_user is admin' do

spec/lib/gitlab/sherlock/collection_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::Sherlock::Collection do
-  let(:collection) { described_class.new }
-
-  let(:transaction) do
-    Gitlab::Sherlock::Transaction.new('POST', '/cat_pictures')
-  end
-
-  describe '#add' do
-    it 'adds a new transaction' do
-      collection.add(transaction)
-
-      expect(collection).not_to be_empty
-    end
-
-    it 'is aliased as <<' do
-      collection << transaction
-
-      expect(collection).not_to be_empty
-    end
-  end
-
-  describe '#each' do
-    it 'iterates over every transaction' do
-      collection.add(transaction)
-
-      expect { |b| collection.each(&b) }.to yield_with_args(transaction)
-    end
-  end
-
-  describe '#clear' do
-    it 'removes all transactions' do
-      collection.add(transaction)
-
-      collection.clear
-
-      expect(collection).to be_empty
-    end
-  end
-
-  describe '#empty?' do
-    it 'returns true for an empty collection' do
-      expect(collection).to be_empty
-    end
-
-    it 'returns false for a collection with a transaction' do
-      collection.add(transaction)
-
-      expect(collection).not_to be_empty
-    end
-  end
-
-  describe '#find_transaction' do
-    it 'returns the transaction for the given ID' do
-      collection.add(transaction)
-
-      expect(collection.find_transaction(transaction.id)).to eq(transaction)
-    end
-
-    it 'returns nil when no transaction could be found' do
-      collection.add(transaction)
-
-      expect(collection.find_transaction('cats')).to be_nil
-    end
-  end
-
-  describe '#newest_first' do
-    it 'returns transactions sorted from new to old' do
-      trans1 = Gitlab::Sherlock::Transaction.new('POST', '/cat_pictures')
-      trans2 = Gitlab::Sherlock::Transaction.new('POST', '/more_cat_pictures')
-
-      allow(trans1).to receive(:finished_at).and_return(Time.utc(2015, 1, 1))
-      allow(trans2).to receive(:finished_at).and_return(Time.utc(2015, 1, 2))
-
-      collection.add(trans1)
-      collection.add(trans2)
-
-      expect(collection.newest_first).to eq([trans2, trans1])
-    end
-  end
-end

spec/lib/gitlab/sherlock/file_sample_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::Sherlock::FileSample do
-  let(:sample) { described_class.new(__FILE__, [], 150.4, 2) }
-
-  describe '#id' do
-    it 'returns the ID' do
-      expect(sample.id).to be_an_instance_of(String)
-    end
-  end
-
-  describe '#file' do
-    it 'returns the file path' do
-      expect(sample.file).to eq(__FILE__)
-    end
-  end
-
-  describe '#line_samples' do
-    it 'returns the line samples' do
-      expect(sample.line_samples).to eq([])
-    end
-  end
-
-  describe '#events' do
-    it 'returns the total number of events' do
-      expect(sample.events).to eq(2)
-    end
-  end
-
-  describe '#duration' do
-    it 'returns the total execution time' do
-      expect(sample.duration).to eq(150.4)
-    end
-  end
-
-  describe '#relative_path' do
-    it 'returns the relative path' do
-      expect(sample.relative_path)
-        .to eq('spec/lib/gitlab/sherlock/file_sample_spec.rb')
-    end
-  end
-
-  describe '#to_param' do
-    it 'returns the sample ID' do
-      expect(sample.to_param).to eq(sample.id)
-    end
-  end
-
-  describe '#source' do
-    it 'returns the contents of the file' do
-      expect(sample.source).to eq(File.read(__FILE__))
-    end
-  end
-end

spec/lib/gitlab/sherlock/line_profiler_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::Sherlock::LineProfiler do
-  let(:profiler) { described_class.new }
-
-  describe '#profile' do
-    it 'runs the profiler when using MRI' do
-      allow(profiler).to receive(:mri?).and_return(true)
-      allow(profiler).to receive(:profile_mri)
-
-      profiler.profile { 'cats' }
-    end
-
-    it 'raises NotImplementedError when profiling an unsupported platform' do
-      allow(profiler).to receive(:mri?).and_return(false)
-
-      expect { profiler.profile { 'cats' } }.to raise_error(NotImplementedError)
-    end
-  end
-
-  describe '#profile_mri' do
-    it 'returns an Array containing the return value and profiling samples' do
-      allow(profiler).to receive(:lineprof)
-        .and_yield
-        .and_return({ __FILE__ => [[0, 0, 0, 0]] })
-
-      retval, samples = profiler.profile_mri { 42 }
-
-      expect(retval).to eq(42)
-      expect(samples).to eq([])
-    end
-  end
-
-  describe '#aggregate_rblineprof' do
-    let(:raw_samples) do
-      { __FILE__ => [[30000, 30000, 5, 0], [15000, 15000, 4, 0]] }
-    end
-
-    it 'returns an Array of FileSample objects' do
-      samples = profiler.aggregate_rblineprof(raw_samples)
-
-      expect(samples).to be_an_instance_of(Array)
-      expect(samples[0]).to be_an_instance_of(Gitlab::Sherlock::FileSample)
-    end
-
-    describe 'the first FileSample object' do
-      let(:file_sample) do
-        profiler.aggregate_rblineprof(raw_samples)[0]
-      end
-
-      it 'uses the correct file path' do
-        expect(file_sample.file).to eq(__FILE__)
-      end
-
-      it 'contains a list of line samples' do
-        line_sample = file_sample.line_samples[0]
-
-        expect(line_sample).to be_an_instance_of(Gitlab::Sherlock::LineSample)
-
-        expect(line_sample.duration).to eq(15.0)
-        expect(line_sample.events).to eq(4)
-      end
-
-      it 'contains the total file execution time' do
-        expect(file_sample.duration).to eq(30.0)
-      end
-
-      it 'contains the total amount of file events' do
-        expect(file_sample.events).to eq(5)
-      end
-    end
-  end
-end

spec/lib/gitlab/sherlock/line_sample_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::Sherlock::LineSample do
-  let(:sample) { described_class.new(150.0, 4) }
-
-  describe '#duration' do
-    it 'returns the duration' do
-      expect(sample.duration).to eq(150.0)
-    end
-  end
-
-  describe '#events' do
-    it 'returns the amount of events' do
-      expect(sample.events).to eq(4)
-    end
-  end
-
-  describe '#percentage_of' do
-    it 'returns the percentage of 1500.0' do
-      expect(sample.percentage_of(1500.0)).to be_within(0.1).of(10.0)
-    end
-  end
-
-  describe '#majority_of' do
-    it 'returns true if the sample takes up the majority of the given duration' do
-      expect(sample.majority_of?(500.0)).to eq(true)
-    end
-
-    it "returns false if the sample doesn't take up the majority of the given duration" do
-      expect(sample.majority_of?(1500.0)).to eq(false)
-    end
-  end
-end

spec/lib/gitlab/sherlock/location_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::Sherlock::Location do
-  let(:location) { described_class.new(__FILE__, 1) }
-
-  describe 'from_ruby_location' do
-    it 'creates a Location from a Thread::Backtrace::Location' do
-      input  = caller_locations[0]
-      output = described_class.from_ruby_location(input)
-
-      expect(output).to be_an_instance_of(described_class)
-      expect(output.path).to eq(input.path)
-      expect(output.line).to eq(input.lineno)
-    end
-  end
-
-  describe '#path' do
-    it 'returns the file path' do
-      expect(location.path).to eq(__FILE__)
-    end
-  end
-
-  describe '#line' do
-    it 'returns the line number' do
-      expect(location.line).to eq(1)
-    end
-  end
-
-  describe '#application?' do
-    it 'returns true for an application frame' do
-      expect(location.application?).to eq(true)
-    end
-
-    it 'returns false for a non application frame' do
-      loc = described_class.new('/tmp/cats.rb', 1)
-
-      expect(loc.application?).to eq(false)
-    end
-  end
-end

spec/lib/gitlab/sherlock/middleware_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::Sherlock::Middleware do
-  let(:app) { double(:app) }
-  let(:middleware) { described_class.new(app) }
-
-  describe '#call' do
-    describe 'when instrumentation is enabled' do
-      it 'instruments a request' do
-        allow(middleware).to receive(:instrument?).and_return(true)
-        allow(middleware).to receive(:call_with_instrumentation)
-
-        middleware.call({})
-      end
-    end
-
-    describe 'when instrumentation is disabled' do
-      it "doesn't instrument a request" do
-        allow(middleware).to receive(:instrument).and_return(false)
-        allow(app).to receive(:call)
-
-        middleware.call({})
-      end
-    end
-  end
-
-  describe '#call_with_instrumentation' do
-    it 'instruments a request' do
-      trans = double(:transaction)
-      retval = 'cats are amazing'
-      env = {}
-
-      allow(app).to receive(:call).with(env).and_return(retval)
-      allow(middleware).to receive(:transaction_from_env).and_return(trans)
-      allow(trans).to receive(:run).and_yield.and_return(retval)
-      allow(Gitlab::Sherlock.collection).to receive(:add).with(trans)
-
-      middleware.call_with_instrumentation(env)
-    end
-  end
-
-  describe '#instrument?' do
-    it 'returns false for a text/css request' do
-      env = { 'HTTP_ACCEPT' => 'text/css', 'REQUEST_URI' => '/' }
-
-      expect(middleware.instrument?(env)).to eq(false)
-    end
-
-    it 'returns false for a request to a Sherlock route' do
-      env = {
-        'HTTP_ACCEPT' => 'text/html',
-        'REQUEST_URI' => '/sherlock/transactions'
-      }
-
-      expect(middleware.instrument?(env)).to eq(false)
-    end
-
-    it 'returns true for a request that should be instrumented' do
-      env = {
-        'HTTP_ACCEPT' => 'text/html',
-        'REQUEST_URI' => '/cats'
-      }
-
-      expect(middleware.instrument?(env)).to eq(true)
-    end
-  end
-
-  describe '#transaction_from_env' do
-    it 'returns a Transaction' do
-      env = {
-        'HTTP_ACCEPT' => 'text/html',
-        'REQUEST_URI' => '/cats'
-      }
-
-      expect(middleware.transaction_from_env(env))
-        .to be_an_instance_of(Gitlab::Sherlock::Transaction)
-    end
-  end
-end

spec/lib/gitlab/sherlock/query_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::Sherlock::Query do
-  let(:started_at)  { Time.utc(2015, 1, 1) }
-  let(:finished_at) { started_at + 5 }
-
-  let(:query) do
-    described_class.new('SELECT COUNT(*) FROM users', started_at, finished_at)
-  end
-
-  describe 'new_with_bindings' do
-    it 'returns a Query' do
-      sql = 'SELECT COUNT(*) FROM users WHERE id = $1'
-      bindings = [[double(:column), 10]]
-
-      query = described_class
-        .new_with_bindings(sql, bindings, started_at, finished_at)
-
-      expect(query.query).to eq('SELECT COUNT(*) FROM users WHERE id = 10;')
-    end
-  end
-
-  describe '#id' do
-    it 'returns a String' do
-      expect(query.id).to be_an_instance_of(String)
-    end
-  end
-
-  describe '#query' do
-    it 'returns the query with a trailing semi-colon' do
-      expect(query.query).to eq('SELECT COUNT(*) FROM users;')
-    end
-  end
-
-  describe '#started_at' do
-    it 'returns the start time' do
-      expect(query.started_at).to eq(started_at)
-    end
-  end
-
-  describe '#finished_at' do
-    it 'returns the completion time' do
-      expect(query.finished_at).to eq(finished_at)
-    end
-  end
-
-  describe '#backtrace' do
-    it 'returns the backtrace' do
-      expect(query.backtrace).to be_an_instance_of(Array)
-    end
-  end
-
-  describe '#duration' do
-    it 'returns the duration in milliseconds' do
-      expect(query.duration).to be_within(0.1).of(5000.0)
-    end
-  end
-
-  describe '#to_param' do
-    it 'returns the query ID' do
-      expect(query.to_param).to eq(query.id)
-    end
-  end
-
-  describe '#formatted_query' do
-    it 'returns a formatted version of the query' do
-      expect(query.formatted_query).to eq(<<-EOF.strip)
-SELECT COUNT(*)
-FROM users;
-      EOF
-    end
-  end
-
-  describe '#last_application_frame' do
-    it 'returns the last application frame' do
-      frame = query.last_application_frame
-
-      expect(frame).to be_an_instance_of(Gitlab::Sherlock::Location)
-      expect(frame.path).to eq(__FILE__)
-    end
-  end
-
-  describe '#application_backtrace' do
-    it 'returns an Array of application frames' do
-      frames = query.application_backtrace
-
-      expect(frames).to be_an_instance_of(Array)
-      expect(frames).not_to be_empty
-
-      frames.each do |frame|
-        expect(frame.path).to start_with(Rails.root.to_s)
-      end
-    end
-  end
-
-  describe '#explain' do
-    it 'returns the query plan as a String' do
-      lines = [
-        ['Aggregate (cost=123 rows=1)'],
-        ['  -> Index Only Scan using index_cats_are_amazing']
-      ]
-
-      result = double(:result, values: lines)
-
-      allow(query).to receive(:raw_explain).and_return(result)
-
-      expect(query.explain).to eq(<<-EOF.strip)
-Aggregate (cost=123 rows=1)
-  -> Index Only Scan using index_cats_are_amazing
-      EOF
-    end
-  end
-end

spec/lib/gitlab/sherlock/transaction_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::Sherlock::Transaction do
-  let(:transaction) { described_class.new('POST', '/cat_pictures') }
-
-  describe '#id' do
-    it 'returns the transaction ID' do
-      expect(transaction.id).to be_an_instance_of(String)
-    end
-  end
-
-  describe '#type' do
-    it 'returns the type' do
-      expect(transaction.type).to eq('POST')
-    end
-  end
-
-  describe '#path' do
-    it 'returns the path' do
-      expect(transaction.path).to eq('/cat_pictures')
-    end
-  end
-
-  describe '#queries' do
-    it 'returns an Array of queries' do
-      expect(transaction.queries).to be_an_instance_of(Array)
-    end
-  end
-
-  describe '#file_samples' do
-    it 'returns an Array of file samples' do
-      expect(transaction.file_samples).to be_an_instance_of(Array)
-    end
-  end
-
-  describe '#started_at' do
-    it 'returns the start time' do
-      allow(transaction).to receive(:profile_lines).and_yield
-
-      transaction.run { 'cats are amazing' }
-
-      expect(transaction.started_at).to be_an_instance_of(Time)
-    end
-  end
-
-  describe '#finished_at' do
-    it 'returns the completion time' do
-      allow(transaction).to receive(:profile_lines).and_yield
-
-      transaction.run { 'cats are amazing' }
-
-      expect(transaction.finished_at).to be_an_instance_of(Time)
-    end
-  end
-
-  describe '#view_counts' do
-    it 'returns a Hash' do
-      expect(transaction.view_counts).to be_an_instance_of(Hash)
-    end
-
-    it 'sets the default value of a key to 0' do
-      expect(transaction.view_counts['cats.rb']).to be_zero
-    end
-  end
-
-  describe '#run' do
-    it 'runs the transaction' do
-      allow(transaction).to receive(:profile_lines).and_yield
-
-      retval = transaction.run { 'cats are amazing' }
-
-      expect(retval).to eq('cats are amazing')
-    end
-  end
-
-  describe '#duration' do
-    it 'returns the duration in seconds' do
-      start_time = Time.now
-
-      allow(transaction).to receive(:started_at).and_return(start_time)
-      allow(transaction).to receive(:finished_at).and_return(start_time + 5)
-
-      expect(transaction.duration).to be_within(0.1).of(5.0)
-    end
-  end
-
-  describe '#query_duration' do
-    it 'returns the total query duration in seconds' do
-      time   = Time.now
-      query1 = Gitlab::Sherlock::Query.new('SELECT 1', time, time + 5)
-      query2 = Gitlab::Sherlock::Query.new('SELECT 2', time, time + 2)
-
-      transaction.queries << query1
-      transaction.queries << query2
-
-      expect(transaction.query_duration).to be_within(0.1).of(7.0)
-    end
-  end
-
-  describe '#to_param' do
-    it 'returns the transaction ID' do
-      expect(transaction.to_param).to eq(transaction.id)
-    end
-  end
-
-  describe '#sorted_queries' do
-    it 'returns the queries in descending order' do
-      start_time = Time.now
-
-      query1 = Gitlab::Sherlock::Query.new('SELECT 1', start_time, start_time)
-
-      query2 = Gitlab::Sherlock::Query
-        .new('SELECT 2', start_time, start_time + 5)
-
-      transaction.queries << query1
-      transaction.queries << query2
-
-      expect(transaction.sorted_queries).to eq([query2, query1])
-    end
-  end
-
-  describe '#sorted_file_samples' do
-    it 'returns the file samples in descending order' do
-      sample1 = Gitlab::Sherlock::FileSample.new(__FILE__, [], 10.0, 1)
-      sample2 = Gitlab::Sherlock::FileSample.new(__FILE__, [], 15.0, 1)
-
-      transaction.file_samples << sample1
-      transaction.file_samples << sample2
-
-      expect(transaction.sorted_file_samples).to eq([sample2, sample1])
-    end
-  end
-
-  describe '#find_query' do
-    it 'returns a Query when found' do
-      query = Gitlab::Sherlock::Query.new('SELECT 1', Time.now, Time.now)
-
-      transaction.queries << query
-
-      expect(transaction.find_query(query.id)).to eq(query)
-    end
-
-    it 'returns nil when no query could be found' do
-      expect(transaction.find_query('cats')).to be_nil
-    end
-  end
-
-  describe '#find_file_sample' do
-    it 'returns a FileSample when found' do
-      sample = Gitlab::Sherlock::FileSample.new(__FILE__, [], 10.0, 1)
-
-      transaction.file_samples << sample
-
-      expect(transaction.find_file_sample(sample.id)).to eq(sample)
-    end
-
-    it 'returns nil when no file sample could be found' do
-      expect(transaction.find_file_sample('cats')).to be_nil
-    end
-  end
-
-  describe '#profile_lines' do
-    describe 'when line profiling is enabled' do
-      it 'yields the block using the line profiler' do
-        allow(Gitlab::Sherlock).to receive(:enable_line_profiler?)
-          .and_return(true)
-
-        allow_next_instance_of(Gitlab::Sherlock::LineProfiler) do |instance|
-          allow(instance).to receive(:profile).and_return('cats are amazing', [])
-        end
-
-        retval = transaction.profile_lines { 'cats are amazing' }
-
-        expect(retval).to eq('cats are amazing')
-      end
-    end
-
-    describe 'when line profiling is disabled' do
-      it 'yields the block' do
-        allow(Gitlab::Sherlock).to receive(:enable_line_profiler?)
-          .and_return(false)
-
-        retval = transaction.profile_lines { 'cats are amazing' }
-
-        expect(retval).to eq('cats are amazing')
-      end
-    end
-  end
-
-  describe '#subscribe_to_active_record' do
-    let(:subscription) { transaction.subscribe_to_active_record }
-    let(:time) { Time.now }
-    let(:query_data) { { sql: 'SELECT 1', binds: [] } }
-
-    after do
-      ActiveSupport::Notifications.unsubscribe(subscription)
-    end
-
-    it 'tracks executed queries' do
-      expect(transaction).to receive(:track_query)
-        .with('SELECT 1', [], time, time)
-
-      subscription.publish('test', time, time, nil, query_data)
-    end
-
-    it 'only tracks queries triggered from the transaction thread' do
-      expect(transaction).not_to receive(:track_query)
-
-      Thread.new { subscription.publish('test', time, time, nil, query_data) }
-        .join
-    end
-  end
-
-  describe '#subscribe_to_action_view' do
-    let(:subscription) { transaction.subscribe_to_action_view }
-    let(:time) { Time.now }
-    let(:view_data) { { identifier: 'foo.rb' } }
-
-    after do
-      ActiveSupport::Notifications.unsubscribe(subscription)
-    end
-
-    it 'tracks rendered views' do
-      expect(transaction).to receive(:track_view).with('foo.rb')
-
-      subscription.publish('test', time, time, nil, view_data)
-    end
-
-    it 'only tracks views rendered from the transaction thread' do
-      expect(transaction).not_to receive(:track_view)
-
-      Thread.new { subscription.publish('test', time, time, nil, view_data) }
-        .join
-    end
-  end
-end

spec/simplecov_env.rb

@@ -53,7 +53,6 @@ module SimpleCovEnv
       track_files '{app,config/initializers,config/initializers_before_autoloader,db/post_migrate,haml_lint,lib,rubocop,tooling}/**/*.rb'
 
       add_filter '/vendor/ruby/'
-      add_filter '/app/controllers/sherlock/' # Profiling tool used only in development
       add_filter '/bin/'
       add_filter 'db/fixtures/development/' # Matches EE files as well