Reimplement Trigger API

3 files changed, 53 insertions, 0 deletions

diff --git a/lib/api/api.rb b/lib/api/api.rb
index fe1bf8a4816..7834262d612 100644
--- a/lib/api/api.rb
+++ b/lib/api/api.rb
@@ -53,5 +53,6 @@ module API
     mount Settings
     mount Keys
     mount Tags
+    mount Triggers
   end
 end
diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index 381babe291b..b1cd80bdf65 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -361,5 +361,9 @@ module API
         end
       end
     end
+
+    class TriggerRequest < Grape::Entity
+      expose :id, :variables
+    end
   end
 end
diff --git a/lib/api/triggers.rb b/lib/api/triggers.rb
new file mode 100644
index 00000000000..b713c00e82a
--- /dev/null
+++ b/lib/api/triggers.rb
@@ -0,0 +1,48 @@
+module API
+  # Triggers API
+  class Triggers < Grape::API
+    resource :projects do
+      # Trigger a GitLab project build
+      #
+      # Parameters:
+      #   id (required) - The ID of a CI project
+      #   ref (required) - The name of project's branch or tag
+      #   token (required) - The uniq token of trigger
+      #   variables (optional) - The list of variables to be injected into build
+      # Example Request:
+      #   POST /projects/:id/trigger/builds
+      post ":id/trigger/builds" do
+        required_attributes! [:ref, :token]
+
+        project = Project.find_with_namespace(id) || Project.find_by(id: params[:id])
+        trigger = Ci::Trigger.find_by_token(params[:token].to_s)
+        not_found! unless project && trigger
+        unauthorized! unless trigger.project == project
+
+        # validate variables
+        variables = params[:variables]
+        if variables
+          unless variables.is_a?(Hash)
+            render_api_error!('variables needs to be a hash', 400)
+          end
+
+          unless variables.all? { |key, value| key.is_a?(String) && value.is_a?(String) }
+            render_api_error!('variables needs to be a map of key-valued strings', 400)
+          end
+
+          # convert variables from Mash to Hash
+          variables = variables.to_h
+        end
+
+        # create request and trigger builds
+        trigger_request = Ci::CreateTriggerRequestService.new.execute(project, trigger, params[:ref].to_s, variables)
+        if trigger_request
+          present trigger_request, with: Entities::TriggerRequest
+        else
+          errors = 'No builds created'
+          render_api_error!(errors, 400)
+        end
+      end
+    end
+  end
+end