Initial detection of Auto-DevOps buildable projectsauto_devops_detect2

2 files changed, 108 insertions, 1 deletions

diff --git a/lib/gitlab/auto_devops/buildable_detector.rb b/lib/gitlab/auto_devops/buildable_detector.rb
new file mode 100644
index 00000000000..39c3d29135b
--- /dev/null
+++ b/lib/gitlab/auto_devops/buildable_detector.rb
@@ -0,0 +1,103 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module AutoDevops
+    class BuildableDetector
+      VARIABLES = [
+        'BUILDPACK_URL'
+      ].freeze
+
+      FILE_PATTERNS = [
+        'Dockerfile',
+
+        # https://github.com/heroku/heroku-buildpack-clojure
+        'project.clj',
+
+        # https://github.com/heroku/heroku-buildpack-go
+        'go.mod',
+        'Gopkg.mod',
+        'Godeps/Godeps.json',
+        'vendor/vendor.json',
+        'glide.yaml',
+        'src/**.go',
+
+        # https://github.com/heroku/heroku-buildpack-gradle
+        'gradlew',
+        'build.gradle',
+        'settings.gradle',
+
+        # https://github.com/heroku/heroku-buildpack-java
+        'pom.xml',
+        'pom.atom',
+        'pom.clj',
+        'pom.groovy',
+        'pom.rb',
+        'pom.scala',
+        'pom.yaml',
+        'pom.yml',
+
+        # https://github.com/heroku/heroku-buildpack-multi
+        '.buildpacks',
+
+        # https://github.com/heroku/heroku-buildpack-nodejs
+        'package.json',
+
+        # https://github.com/heroku/heroku-buildpack-php
+        'composer.json',
+        'index.php',
+
+        # https://github.com/heroku/heroku-buildpack-play
+        # TODO: detect script excludes some scala files
+        '*/conf/application.conf',
+        '*modules*',
+
+        # https://github.com/heroku/heroku-buildpack-python
+        # TODO: detect script checks that all of these exist, not any
+        'requirements.txt',
+        'setup.py',
+        'Pipfile',
+
+        # https://github.com/heroku/heroku-buildpack-ruby
+        'Gemfile',
+
+        # https://github.com/heroku/heroku-buildpack-scala
+        '*.sbt',
+        'project/*.scala',
+        '.sbt/*.scala',
+        'project/build.properties',
+
+        # https://github.com/dokku/buildpack-nginx
+        '.static'
+      ].freeze
+
+      def initialize(project, ref)
+        @project = project
+        @ref = ref
+      end
+
+      def buildable?
+        detected_variables? || detected_files?
+      end
+
+      private
+
+      attr_accessor :project, :ref
+
+      def detected_variables?
+        project.ci_variables_for(ref: ref).where(key: VARIABLES).exists?
+      end
+
+      def detected_files?
+        return unless tree = project.repository.tree(ref)
+
+        tree.blobs.find do |blob|
+          FILE_PATTERNS.any? do |pattern|
+            File.fnmatch?(pattern, blob.path, File::FNM_CASEFOLD)
+          end
+        end
+      rescue Gitlab::Git::Repository::NoRepository
+        # nop
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/ci/pipeline/chain/validate/config.rb b/lib/gitlab/ci/pipeline/chain/validate/config.rb
index 28c38cc3d18..a6f63eabb80 100644
--- a/lib/gitlab/ci/pipeline/chain/validate/config.rb
+++ b/lib/gitlab/ci/pipeline/chain/validate/config.rb
@@ -11,7 +11,11 @@ module Gitlab
             def perform!
               unless @pipeline.config_processor
                 unless @pipeline.ci_yaml_file
-                  return error("Missing #{@pipeline.ci_yaml_file_path} file")
+                  if @pipeline.project.auto_devops_enabled?
+                    return error("Auto-DevOps enabled but no buildable files found")
+                  else
+                    return error("Missing #{@pipeline.ci_yaml_file_path} file")
+                  end
                 end
 
                 if @command.save_incompleted && @pipeline.has_yaml_errors?