update ci configuration to send slack notifications on failure and added rake task

.gitlab-ci.yml

@@ -19,7 +19,12 @@ before_script:
   - bundle install --without postgres production --jobs $(nproc)  "${FLAGS[@]}"
   - RAILS_ENV=test bundle exec rake db:drop db:create db:schema:load db:migrate
 
+stages:
+- test
+- notifications
+
 spec:feature:
+  stage: test
   script:
     - RAILS_ENV=test bundle exec rake assets:precompile 2>/dev/null
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spec:feature
@@ -28,6 +33,7 @@ spec:feature:
     - mysql
 
 spec:api:
+  stage: test
   script:
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spec:api
   tags:
@@ -35,6 +41,7 @@ spec:api:
     - mysql
 
 spec:models:
+  stage: test
   script:
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spec:models
   tags:
@@ -42,6 +49,7 @@ spec:models:
     - mysql
 
 spec:lib:
+  stage: test
   script:
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spec:lib
   tags:
@@ -49,6 +57,7 @@ spec:lib:
     - mysql
 
 spec:services:
+  stage: test
   script:
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spec:services
   tags:
@@ -56,6 +65,7 @@ spec:services:
     - mysql
 
 spec:benchmark:
+  stage: test
   script:
     - RAILS_ENV=test bundle exec rake spec:benchmark
   tags:
@@ -64,6 +74,7 @@ spec:benchmark:
   allow_failure: true
 
 spec:other:
+  stage: test
   script:
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spec:other
   tags:
@@ -71,6 +82,7 @@ spec:other:
     - mysql
 
 spinach:project:half:
+  stage: test
   script:
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spinach:project:half
   tags:
@@ -78,6 +90,7 @@ spinach:project:half:
     - mysql
 
 spinach:project:rest:
+  stage: test
   script:
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spinach:project:rest
   tags:
@@ -85,6 +98,7 @@ spinach:project:rest:
     - mysql
 
 spinach:other:
+  stage: test
   script:
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spinach:other
   tags:
@@ -92,6 +106,7 @@ spinach:other:
     - mysql
 
 teaspoon:
+  stage: test
   script:
     - RAILS_ENV=test bundle exec teaspoon
   tags:
@@ -99,6 +114,7 @@ teaspoon:
     - mysql
 
 rubocop:
+  stage: test
   script:
     - bundle exec rubocop
   tags:
@@ -106,6 +122,7 @@ rubocop:
     - mysql
 
 brakeman:
+  stage: test
   script:
     - bundle exec rake brakeman
   tags:
@@ -113,6 +130,7 @@ brakeman:
     - mysql
 
 flog:
+  stage: test
   script:
     - bundle exec rake flog
   tags:
@@ -120,6 +138,7 @@ flog:
     - mysql
 
 flay:
+  stage: test
   script:
     - bundle exec rake flay
   tags:
@@ -127,6 +146,7 @@ flay:
     - mysql
 
 bundler:audit:
+  stage: test
   script:
     - "bundle exec bundle-audit update"
     - "bundle exec bundle-audit check"
@@ -135,9 +155,10 @@ bundler:audit:
     - mysql
   allow_failure: true
 
-# Ruby 2.1 jobs
+## Ruby 2.1 jobs
 
 spec:ruby21:
+  stage: test
   image: ruby:2.1
   script:
     - RAILS_ENV=test bundle exec rake assets:precompile 2>/dev/null
@@ -149,6 +170,7 @@ spec:ruby21:
   - master
 
 spinach:ruby21:
+  stage: test
   image: ruby:2.1
   script:
     - RAILS_ENV=test SIMPLECOV=true bundle exec rake spinach
@@ -157,3 +179,12 @@ spinach:ruby21:
     - mysql
   only:
   - master
+
+notify:slack:
+  stage: notifications
+  script:
+    - bundle exec rake ci:slack
+  when: on_failure
+#  only:
+#    - master
+#    - tags
\ No newline at end of file

lib/tasks/ci/slack.rake

+namespace :ci do
+  namespace :slack do
+    desc "GitLab CI | Send slack notification on build failure"
+    task error: :environment do
+      error_text = 'Build failed for master/tags'
+      Kernel.system "curl -X POST --data-urlencode 'payload={\"channel\": \"#ci-test\", \"username\": \"gitlab-ci\", \"text\": \"#{error_text}\", \"icon_emoji\": \":gitlab:\"}' $CI_SLACK_WEBHOOK_URL"
+    end
+  end
+end