新建实训 --事务一致性及异常处理

app/controllers/challenges_controller.rb

@@ -25,7 +25,8 @@ class ChallengesController < ApplicationController
     @challenge.shixun = @shixun
     @challenge.user = User.current
     ActiveRecord::Base.transaction do
-      if @challenge.save
+      begin
+        @challenge.save!
         if params[:sample][:input].length > 0
           params[:sample][:input].each_with_index do |value, index|
             unless (value == params[:sample][:output][index] && value.blank?)
@@ -43,21 +44,34 @@ class ChallengesController < ApplicationController
             ChallengeTag.create(:name => input, :challenge_id => @challenge.id)
           end
         end
-        # 向jenkins端发送请求，构建pipeline片段
-        params = {:shixunType => "#{@challenge.evaluation_way.to_i}", :filePath => "#{@challenge.path}", :step => "#{@challenge.position}"}
-        uri = URI("#{jenkins_shixuns}/jenkins-exec/api/generateScriptPerChallenge")
-        res = uri_exec uri, params
+        # 向jenkins端发送请求，构建pipeline片段，实时返回结果
+        begin
+          jenkins_shixuns = Redmine::Configuration['jenkins_shixuns']
+          params = {:shixunType => "#{@challenge.evaluation_way.to_i}", :filePath => "#{@challenge.path}", :step => "#{@challenge.position}", :challengeId => "#{@challenge.id}"}
+          uri = URI("#{jenkins_shixuns}/jenkins-exec/api/generateScriptPerChallenge")
+          res = uri_exec uri, params
+          if res.blank?
+            raise("jenkins服务器异常")
+          end
+        rescue
+          raise("jenkins服务器异常")
+        end
         respond_to do |format|
           format.html {redirect_to shixun_challenge_path(@challenge, :shixun_id => @shixun), notice: '创建成功！'}
         end
-      else
-        respond_to do |format|
-          format.html { render :action => 'new' }
-        end
+      rescue Exception => e
+        flash[:error] = "#{e.message}"
+        redirect_to new_shixun_challenge_path(:shixun_id => @shixun.id)
+        raise ActiveRecord::Rollback
       end
     end
   end
 
+  # 处理新建challenge返回的pipeline片段
+  def fragment_from_jenkins
+
+  end
+
   def index
     # 顶部导航
     @challenges = @shixun.challenges.order("position desc")