Use V3 services for debug route

lib/travis/api/app/endpoint/jobs.rb

@@ -124,16 +124,6 @@ class Travis::Api::App
         end
       end
 
-      post "/:job_id/debug" do
-        Travis.logger.debug "Reached endpoint"
-        job = service(:find_job, params).run
-        Travis.logger.debug "found job: #{job}"
-        cfg = job.config
-        cfg.merge! debug_data
-        job.save!
-        status 200
-      end
-
       def archive_url(path)
         "https://s3.amazonaws.com/#{hostname('archive')}#{path}"
       end

lib/travis/api/v3/permissions/job.rb

@@ -9,5 +9,9 @@ module Travis::API::V3
     def restart?
       write?
     end
+
+    def debug?
+      write?
+    end
   end
 end

lib/travis/api/v3/routes.rb

@@ -34,6 +34,7 @@ module Travis::API::V3
 
       post :cancel, '/cancel'
       post :restart, '/restart'
+      post :debug, '/debug'
     end
 
     resource :organization do

lib/travis/api/v3/services/job/debug.rb

@@ -0,0 +1,19 @@
+module Travis::API::V3
+  class Services::Job::Debug < Service
+
+    def run
+      raise LoginRequired unless access_control.logged_in? or access_control.full_access?
+      raise NotFound      unless job = find(:job)
+      access_control.permissions(job).debug!
+
+      Travis.logger.debug "Reached endpoint"
+      job = service(:find_job, params).run
+      Travis.logger.debug "found job: #{job}"
+      cfg = job.config
+      cfg.merge! debug_data
+      job.save!
+
+      accepted(job: job, state_change: :created)
+    end
+  end
+end