Fix n plus one issue ci build dast profile

What does this MR do and why?

As described in #346325 (closed), there are two N+1 issues when multiple builds with the dast_configuration keyword are present in the YAML file.

Example:

stages:
  - dast
dast:
  stage: dast
  dast_configuration:
    site_profile: dast_site_profile_name
    scanner_profile: dast_scanner_profile_name
  script:
    - exit 0
dast2:
  stage: dast
  dast_configuration:
    site_profile: another_dast_site_profile_name
    scanner_profile: another_dast_scanner_profile_name
  script:
    - exit 0

In order to fix these N+1 issues this Merge Request:

• Creates a service that takes several builds and profiles and associates them inside a single database insert.
• Extends the profiles finder to batch load profiles.

Before

SELECT "dast_site_profiles".* FROM "dast_site_profiles" WHERE "dast_site_profiles"."project_id" = 2 AND "dast_site_profiles"."name" = 'Portable Receiver 172ca0e6 - 1' ORDER BY "dast_site_profiles"."id" ASC LIMIT 1 /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/

SELECT "dast_sites".* FROM "dast_sites" WHERE "dast_sites"."id" = 3 /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/

SELECT "dast_scanner_profiles".* FROM "dast_scanner_profiles" WHERE "dast_scanner_profiles"."project_id" = 2 AND "dast_scanner_profiles"."name" = 'GPS Bridge 7848fd8e - 1' ORDER BY "dast_scanner_profiles"."id" ASC LIMIT 1 /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/

INSERT INTO "dast_site_profiles_builds" ("dast_site_profile_id", "ci_build_id") VALUES (3, 7) /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/

INSERT INTO "dast_scanner_profiles_builds" ("dast_scanner_profile_id", "ci_build_id") VALUES (3, 7) /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/


SELECT "dast_site_profiles".* FROM "dast_site_profiles" WHERE "dast_site_profiles"."project_id" = 2 AND "dast_site_profiles"."name" = 'Power Bridge a5ed6674 - 2' ORDER BY "dast_site_profiles"."id" ASC LIMIT 1 /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/

SELECT "dast_sites".* FROM "dast_sites" WHERE "dast_sites"."id" = 4 /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/

SELECT "dast_scanner_profiles".* FROM "dast_scanner_profiles" WHERE "dast_scanner_profiles"."project_id" = 2 AND "dast_scanner_profiles"."name" = 'Video System f5efa6ec - 2' ORDER BY "dast_scanner_profiles"."id" ASC LIMIT 1 /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/

INSERT INTO "dast_site_profiles_builds" ("dast_site_profile_id", "ci_build_id") VALUES (4, 8) /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/

INSERT INTO "dast_scanner_profiles_builds" ("dast_scanner_profile_id", "ci_build_id") VALUES (4, 8) /*application:test,correlation_id:1d5d62b143cc80539f1417a2e0b7c529,db_config_name:main*/

After

SELECT "dast_site_profiles".* FROM "dast_site_profiles" WHERE "dast_site_profiles"."project_id" = 1 AND "dast_site_profiles"."name" IN ('Power Bridge c1085309 - 1', 'Electric GPS Compressor f3adb06f - 2') 

SELECT "dast_sites".* FROM "dast_sites" WHERE "dast_sites"."id" IN (2, 1) 

SELECT "dast_scanner_profiles".* FROM "dast_scanner_profiles" WHERE "dast_scanner_profiles"."name" IN ('Auto Case 657d053e - 1', 'Digital Transmitter 3c2c49e0 - 2') 

INSERT INTO "dast_site_profiles_builds" ("ci_build_id","dast_site_profile_id") VALUES (3, 1), (4, 2) ON CONFLICT ("ci_build_id") DO NOTHING RETURNING "dast_site_profile_id","ci_build_id" 

INSERT INTO "dast_scanner_profiles_builds" ("ci_build_id","dast_scanner_profile_id") VALUES (3, 1), (4, 2) ON CONFLICT ("ci_build_id") DO NOTHING RETURNING "dast_scanner_profile_id","ci_build_id" 

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ee/spec/services/app_sec/dast/profiles/create_associations_service_spec.rb

@@ -3,7 +3,38 @@
 require 'spec_helper'
 
 RSpec.describe AppSec::Dast::Profiles::CreateAssociationsService do
-  describe '#associate_dast_profiles_to_builds' do
-    skip
+  let(:params) { { builds: [] } }
+  let_it_be(:user) { build(:user) }
+  let_it_be(:project) { create(:project) }
+
+  subject { described_class.new(project: project, current_user: user, params: params).execute }
+
+  describe '#execute' do
+    shared_examples 'an error occurred' do
+      it 'communicates failure', :aggregate_failures do
+        expect(subject).to be_error
+        #expect(subject.payload[profile.class.underscore.to_sym]).to be_nil
+        expect(subject.errors).to include(error_message)
+      end
+    end
+
+    context 'when the user cannot create dast scans' do
+
+      let(:error_message) { 'Insufficient permissions for dast_configuration keyword' }
+      it_behaves_like 'an error occurred' do
+        let(:error_message) { 'Insufficient permissions for dast_configuration keyword' }
+      end
+    end
+
+    context 'when not licensed' do
+      before do
+        stub_licensed_features(security_on_demand_scans: false)
+      end
+
+      let(:error_message) { 'Insufficient permissions for dast_configuration keyword' }
+      it_behaves_like 'an error occurred' do
+        let(:error_message) { 'Insufficient permissions for dast_configuration keyword' }
+      end
+    end
   end
 end