updating xserver to check for vars before deploying

playbooks/roles/xserver/defaults/main.yml

@@ -8,9 +8,9 @@ XSERVER_RUN_URL: ''
 XSERVER_LOGGING_ENV: 'sandbox'
 XSERVER_SYSLOG_SERVER: ''
 # For 6.00x use "{{ xserver_data_dir }}/data/content-mit-600x~2012_Fall"
-XSERVER_GRADER_DIR: "{{ xserver_data_dir }}/data/edx-demo-course"
+XSERVER_GRADER_DIR: ""
 # For 6.00x use "git@github.com:/MITx/6.00x.git"
-XSERVER_GRADER_SOURCE: "https://{{ COMMON_GIT_MIRROR }}/edx/edx-demo-course.git"
+XSERVER_GRADER_SOURCE: ""
 
 
 # by default do not check out the content

playbooks/roles/xserver/tasks/main.yml

@@ -3,6 +3,10 @@
 # access to the edX 6.00x repo which is not public
 ---
 
+- name: xserver | checking for grader info
+  fail: msg="You must define XSERVER_GRADER_DIR and XSERVER_GRADER_SOURCE to use this role!"
+  when: XSERVER_GRADER_DIR == "" or XSERVER_GRADER_SOURCE == ""
+
 - name: xserver | create application user
   user: >
     name="{{ xserver_user }}"