Merge branch 'zj-pipelines-api-endpoints' into 'master'

Add endpoints for pipelines

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5837

3 files changed, 83 insertions, 0 deletions

diff --git a/lib/api/api.rb b/lib/api/api.rb
index d43af3f24e9..d9261c97908 100644
--- a/lib/api/api.rb
+++ b/lib/api/api.rb
@@ -56,6 +56,7 @@ module API
     mount ::API::Milestones
     mount ::API::Namespaces
     mount ::API::Notes
+    mount ::API::Pipelines
     mount ::API::ProjectHooks
     mount ::API::ProjectSnippets
     mount ::API::Projects
diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index ec455e67329..99eb8af5ab7 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -500,6 +500,14 @@ module API
       expose :key, :value
     end
 
+    class Pipeline < Grape::Entity
+      expose :id, :status, :ref, :sha, :before_sha, :tag, :yaml_errors
+
+      expose :user, with: Entities::UserBasic
+      expose :created_at, :updated_at, :started_at, :finished_at, :committed_at
+      expose :duration
+    end
+
     class Environment < Grape::Entity
       expose :id, :name, :external_url
     end
diff --git a/lib/api/pipelines.rb b/lib/api/pipelines.rb
new file mode 100644
index 00000000000..2aae75c471d
--- /dev/null
+++ b/lib/api/pipelines.rb
@@ -0,0 +1,74 @@
+module API
+  class Pipelines < Grape::API
+    before { authenticate! }
+
+    params do
+      requires :id, type: String, desc: 'The project ID'
+    end
+    resource :projects do
+      desc 'Get all Pipelines of the project' do
+        detail 'This feature was introduced in GitLab 8.11.'
+        success Entities::Pipeline
+      end
+      params do
+        optional :page,     type: Integer, desc: 'Page number of the current request'
+        optional :per_page, type: Integer, desc: 'Number of items per page'
+      end
+      get ':id/pipelines' do
+        authorize! :read_pipeline, user_project
+
+        present paginate(user_project.pipelines), with: Entities::Pipeline
+      end
+
+      desc 'Gets a specific pipeline for the project' do
+        detail 'This feature was introduced in GitLab 8.11'
+        success Entities::Pipeline
+      end
+      params do
+        requires :pipeline_id, type: Integer, desc: 'The pipeline ID'
+      end
+      get ':id/pipelines/:pipeline_id' do
+        authorize! :read_pipeline, user_project
+
+        present pipeline, with: Entities::Pipeline
+      end
+
+      desc 'Retry failed builds in the pipeline' do
+        detail 'This feature was introduced in GitLab 8.11.'
+        success Entities::Pipeline
+      end
+      params do
+        requires :pipeline_id, type: Integer,  desc: 'The pipeline ID'
+      end
+      post ':id/pipelines/:pipeline_id/retry' do
+        authorize! :update_pipeline, user_project
+
+        pipeline.retry_failed(current_user)
+
+        present pipeline, with: Entities::Pipeline
+      end
+
+      desc 'Cancel all builds in the pipeline' do
+        detail 'This feature was introduced in GitLab 8.11.'
+        success Entities::Pipeline
+      end
+      params do
+        requires :pipeline_id, type: Integer,  desc: 'The pipeline ID'
+      end
+      post ':id/pipelines/:pipeline_id/cancel' do
+        authorize! :update_pipeline, user_project
+
+        pipeline.cancel_running
+
+        status 200
+        present pipeline.reload, with: Entities::Pipeline
+      end
+    end
+
+    helpers do
+      def pipeline
+        @pipeline ||= user_project.pipelines.find(params[:pipeline_id])
+      end
+    end
+  end
+end