Introduce dedicated rules for rspec jobs per level

This allows to run different level of rspec jobs based on the changes.
Signed-off-by: Rémy Coutable <remy@rymai.me>

.gitlab/ci/rails.gitlab-ci.yml

@@ -112,10 +112,10 @@ downtime_check:
 .rspec-base-pg11:
   extends:
     - .rspec-base
-    - .rails:rules:ee-and-foss
     - .use-pg11
 
 .rspec-base-migration:
+  extends: .rails:rules:ee-and-foss-migration
   script:
     - run_timed_command "scripts/gitaly-test-build"
     - run_timed_command "scripts/gitaly-test-spawn"
@@ -129,26 +129,34 @@ rspec migration pg11:
   parallel: 5
 
 rspec unit pg11:
-  extends: .rspec-base-pg11
+  extends:
+    - .rspec-base-pg11
+    - .rails:rules:ee-and-foss-unit
   parallel: 20
 
 rspec integration pg11:
-  extends: .rspec-base-pg11
+  extends:
+    - .rspec-base-pg11
+    - .rails:rules:ee-and-foss-integration
   parallel: 8
 
 rspec system pg11:
-  extends: .rspec-base-pg11
+  extends:
+    - .rspec-base-pg11
+    - .rails:rules:ee-and-foss-system
   parallel: 24
 
 rspec fast_spec_helper:
-  extends: .rspec-base-pg11
+  extends:
+    - .rspec-base-pg11
+    - .rails:rules:ee-and-foss-fast_spec_helper
   script:
     - bin/rspec spec/fast_spec_helper.rb
 
 .db-job-base:
   extends:
     - .rails-job-base
-    - .rails:rules:ee-and-foss
+    - .rails:rules:ee-and-foss-migration
     - .use-pg11
   stage: test
   needs: ["setup-test-env"]
@@ -253,62 +261,70 @@ rspec:coverage:
 
 ##################################################
 # EE: default refs (MRs, master, schedules) jobs #
-.rspec-base-ee:
-  extends:
-    - .rspec-base
-    - .rails:rules:ee-only
-
 .rspec-base-pg11-as-if-foss:
   extends:
     - .rspec-base
-    - .rails:rules:as-if-foss
     - .as-if-foss
     - .use-pg11
   needs: ["setup-test-env", "retrieve-tests-metadata", "compile-test-assets as-if-foss"]
 
-.rspec-ee-base-pg11:
-  extends:
-    - .rspec-base-ee
-    - .use-pg11-ee
-
 rspec migration pg11-as-if-foss:
   extends:
     - .rspec-base-pg11-as-if-foss
     - .rspec-base-migration
+    - .rails:rules:as-if-foss-migration
   parallel: 5
 
 rspec unit pg11-as-if-foss:
-  extends: .rspec-base-pg11-as-if-foss
+  extends:
+    - .rspec-base-pg11-as-if-foss
+    - .rails:rules:as-if-foss-unit
   parallel: 20
 
 rspec integration pg11-as-if-foss:
-  extends: .rspec-base-pg11-as-if-foss
+  extends:
+    - .rspec-base-pg11-as-if-foss
+    - .rails:rules:as-if-foss-integration
   parallel: 8
 
 rspec system pg11-as-if-foss:
-  extends: .rspec-base-pg11-as-if-foss
+  extends:
+    - .rspec-base-pg11-as-if-foss
+    - .rails:rules:as-if-foss-system
   parallel: 24
 
+.rspec-ee-base-pg11:
+  extends:
+    - .rspec-base
+    - .use-pg11-ee
+
 rspec-ee migration pg11:
   extends:
     - .rspec-ee-base-pg11
     - .rspec-base-migration
+    - .rails:rules:ee-only-migration
   parallel: 2
 
 rspec-ee unit pg11:
-  extends: .rspec-ee-base-pg11
+  extends:
+    - .rspec-ee-base-pg11
+    - .rails:rules:ee-only-unit
   parallel: 10
 
 rspec-ee integration pg11:
-  extends: .rspec-ee-base-pg11
+  extends:
+    - .rspec-ee-base-pg11
+    - .rails:rules:ee-only-integration
   parallel: 4
 
 rspec-ee system pg11:
-  extends: .rspec-ee-base-pg11
+  extends:
+    - .rspec-ee-base-pg11
+    - .rails:rules:ee-only-system
   parallel: 6
 
 .rspec-ee-base-geo:
-  extends: .rspec-base-ee
+  extends: .rspec-base
   script:
     - run_timed_command "scripts/gitaly-test-build"
     - run_timed_command "scripts/gitaly-test-spawn"
@@ -322,19 +338,25 @@ rspec-ee system pg11:
     - .use-pg11-ee
 
 rspec-ee unit pg11 geo:
-  extends: .rspec-ee-base-geo-pg11
+  extends:
+    - .rspec-ee-base-geo-pg11
+    - .rails:rules:ee-only-unit
   parallel: 2
 
 rspec-ee integration pg11 geo:
-  extends: .rspec-ee-base-geo-pg11
+  extends:
+    - .rspec-ee-base-geo-pg11
+    - .rails:rules:ee-only-integration
 
 rspec-ee system pg11 geo:
-  extends: .rspec-ee-base-geo-pg11
+  extends:
+    - .rspec-ee-base-geo-pg11
+    - .rails:rules:ee-only-system
 
 db:rollback geo:
   extends:
     - db:rollback
-    - .rails:rules:ee-only
+    - .rails:rules:ee-only-migration
   script:
     - bundle exec rake geo:db:migrate VERSION=20170627195211
     - bundle exec rake geo:db:migrate

.gitlab/ci/rules.gitlab-ci.yml

@@ -92,6 +92,17 @@
   - "vendor/assets/**/*"
   - "{,ee/}{app/assets,app/helpers,app/presenters,app/views,locale,public,symbol}/**/*"
 
+.backend-patterns: &backend-patterns
+  - "Gemfile{,.lock}"
+  - "Rakefile"
+  - "config.ru"
+  # List explicitly all the app/ dirs that aren't backend (i.e. all except app/assets).
+  - "{,ee/}{app/channels,app/controllers,app/finders,app/graphql,app/helpers,app/mailers,app/models,app/policies,app/presenters,app/serializers,app/services,app/uploaders,app/validators,app/views,app/workers}/**/*"
+  - "{,ee/}{bin,cable,config,db,lib}/**/*"
+
+.db-patterns: &db-patterns
+  - "{,ee/}{db}/**/*"
+
 .backstage-patterns: &backstage-patterns
   - "Dangerfile"
   - "danger/**/*"
@@ -382,24 +393,86 @@
 ###############
 # Rails rules #
 ###############
-.rails:rules:ee-and-foss:
+.rails:rules:ee-and-foss-migration:
   rules:
-    - <<: *if-default-refs
-      changes: *code-backstage-patterns
+    - changes: *db-patterns
+
+.rails:rules:ee-and-foss-unit:
+  rules:
+    - changes: *backend-patterns
+
+.rails:rules:ee-and-foss-integration:
+  rules:
+    - changes: *backend-patterns
+
+.rails:rules:ee-and-foss-system:
+  rules:
+    - changes: *code-backstage-patterns
+
+.rails:rules:ee-and-foss-fast_spec_helper:
+  rules:
+    - changes: ["config/**/*"]
 
 .rails:rules:default-refs-code-backstage-qa:
   rules:
     - <<: *if-default-refs
       changes: *code-backstage-qa-patterns
 
-.rails:rules:ee-only:
+.rails:rules:ee-only-migration:
   rules:
     - <<: *if-not-ee
       when: never
-    - <<: *if-default-refs
-      changes: *code-backstage-patterns
+    - changes: *db-patterns
+
+.rails:rules:ee-only-unit:
+  rules:
+    - <<: *if-not-ee
+      when: never
+    - changes: *backend-patterns
+
+.rails:rules:ee-only-integration:
+  rules:
+    - <<: *if-not-ee
+      when: never
+    - changes: *backend-patterns
+
+.rails:rules:ee-only-system:
+  rules:
+    - <<: *if-not-ee
+      when: never
+    - changes: *code-backstage-patterns
+
+.rails:rules:as-if-foss-migration:
+  rules:
+    - <<: *if-not-ee
+      when: never
+    - <<: *if-security-merge-request
+      changes: *db-patterns
+    - <<: *if-merge-request-title-as-if-foss
+    - <<: *if-merge-request
+      changes: *ci-patterns
+
+.rails:rules:as-if-foss-unit:
+  rules:
+    - <<: *if-not-ee
+      when: never
+    - <<: *if-security-merge-request
+      changes: *backend-patterns
+    - <<: *if-merge-request-title-as-if-foss
+    - <<: *if-merge-request
+      changes: *ci-patterns
+
+.rails:rules:as-if-foss-integration:
+  rules:
+    - <<: *if-not-ee
+      when: never
+    - <<: *if-security-merge-request
+      changes: *backend-patterns
+    - <<: *if-merge-request-title-as-if-foss
+    - <<: *if-merge-request
+      changes: *ci-patterns
 
-.rails:rules:as-if-foss:
+.rails:rules:as-if-foss-system:
   rules:
     - <<: *if-not-ee
       when: never