add: download pdf from trace server

app/controllers/traces/projects_controller.rb

@@ -56,13 +56,12 @@ class Traces::ProjectsController < Traces::BaseController
 
   def task_pdf 
     return render_error("task_id错误") if params[:task_id].blank?
-    code, data, error = Trace::PdfReportService.call(current_user.trace_token, params[:task_id])
-    domain = Trace.trace_config[:domain]
-    base_url = Trace.trace_config[:base_url]
-    url = "/user/pdfreport?task_id=#{params[:task_id]}"
-    file_path = [domain, base_url, url].join
-    request.headers["Authorization"] = current_user.trace_token
-    redirect_to file_path
+    result = Trace::PdfReportService.call(current_user.trace_token, params[:task_id])
+    if result.is_a?(Hash) && result[:code] == 200
+      redirect_to result[:download_url]
+    else 
+      render_error("下载报告失败！")
+    end
   rescue Exception => exception 
     puts exception.message
     normal_status(-1, exception.message)