Add individual usage counters for snippet types

changelogs/unreleased/al-215200-snippets-by-type-usage-counter.yml

+---
+title: Add index on id and type for Snippets
+merge_request: 32885
+author:
+type: performance

db/migrate/20200522235146_add_index_on_snippet_type_and_id.rb

+# frozen_string_literal: true
+
+class AddIndexOnSnippetTypeAndId < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :snippets, [:id, :type]
+  end
+
+  def down
+    remove_concurrent_index :snippets, [:id, :type]
+  end
+end

db/structure.sql

@@ -10744,6 +10744,8 @@ CREATE INDEX index_snippets_on_description_trigram ON public.snippets USING gin
 
 CREATE INDEX index_snippets_on_file_name_trigram ON public.snippets USING gin (file_name public.gin_trgm_ops);
 
+CREATE INDEX index_snippets_on_id_and_type ON public.snippets USING btree (id, type);
+
 CREATE INDEX index_snippets_on_project_id_and_visibility_level ON public.snippets USING btree (project_id, visibility_level);
 
 CREATE INDEX index_snippets_on_title_trigram ON public.snippets USING gin (title public.gin_trgm_ops);
@@ -14024,6 +14026,7 @@ COPY "schema_migrations" (version) FROM STDIN;
 20200521225327
 20200521225337
 20200521225346
+20200522235146
 20200525114553
 20200525121014
 20200526000407

lib/gitlab/usage_data.rb

@@ -133,6 +133,8 @@ module Gitlab
             releases: count(Release),
             remote_mirrors: count(RemoteMirror),
             snippets: count(Snippet),
+            personal_snippets: count(PersonalSnippet),
+            project_snippets: count(ProjectSnippet),
             suggestions: count(Suggestion),
             terraform_reports: count(::Ci::JobArtifact.terraform_reports),
             terraform_states: count(::Terraform::State),

spec/support/helpers/usage_data_helpers.rb

@@ -124,6 +124,8 @@ module UsageDataHelpers
       releases
       remote_mirrors
       snippets
+      personal_snippets
+      project_snippets
       suggestions
       terraform_reports
       terraform_states