Adds composer.json to composer metadata in db

Adding the composer.json metadata to db for
quick access when retrieving it while
serving composer packages.

db/migrate/20200615083635_add_composer_json_to_metadata.rb

+# frozen_string_literal: true
+
+class AddComposerJsonToMetadata < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :packages_composer_metadata, :composer_json, :jsonb, default: {}, null: false
+  end
+end

db/structure.sql

@@ -4672,7 +4672,8 @@ ALTER SEQUENCE public.packages_build_infos_id_seq OWNED BY public.packages_build
 
 CREATE TABLE public.packages_composer_metadata (
     package_id bigint NOT NULL,
-    target_sha bytea NOT NULL
+    target_sha bytea NOT NULL,
+    composer_json jsonb DEFAULT '{}'::jsonb NOT NULL
 );
 
 CREATE TABLE public.packages_conan_file_metadata (
@@ -13971,5 +13972,6 @@ COPY "schema_migrations" (version) FROM STDIN;
 20200609142507
 20200609142508
 20200609212701
+20200615083635
 \.
 

ee/app/models/packages/composer/metadatum.rb

@@ -8,7 +8,7 @@ module Packages
 
       belongs_to :package, -> { where(package_type: :composer) }, inverse_of: :composer_metadatum
 
-      validates :package, presence: true
+      validates :package, :target_sha, :composer_json, presence: true
     end
   end
 end

ee/app/services/packages/composer/create_package_service.rb

@@ -12,7 +12,8 @@ module Packages
         ::Packages::Package.transaction do
           ::Packages::Composer::Metadatum.upsert(
             package_id: created_package.id,
-            target_sha: target
+            target_sha: target,
+            composer_json: composer_json
           )
         end
       end

ee/changelogs/unreleased/214731-save-composer-json-to-db.yml

+---
+title: Save composer.json to package metadata
+merge_request: 34494
+author:
+type: performance

ee/spec/models/packages/composer/metadatum_spec.rb

+# frozen_string_literal: true
+require 'spec_helper'
+
+RSpec.describe Packages::Composer::Metadatum, type: :model do
+  describe 'relationships' do
+    it { is_expected.to belong_to(:package) }
+  end
+
+  describe 'validations' do
+    it { is_expected.to validate_presence_of(:package) }
+    it { is_expected.to validate_presence_of(:target_sha) }
+    it { is_expected.to validate_presence_of(:composer_json) }
+  end
+end

ee/spec/services/packages/composer/create_package_service_spec.rb

@@ -34,6 +34,8 @@ describe Packages::Composer::CreatePackageService do
 
           expect(created_package.name).to eq package_name
           expect(created_package.version).to eq 'dev-master'
+          expect(created_package.composer_metadatum.target_sha).to eq branch.target
+          expect(created_package.composer_metadatum.composer_json.to_json).to eq json
         end
       end