Merge pull request #3752 from edx/neem/course-block-structures

Settings for S3-backed Course Block Structures

CHANGELOG.md

@@ -230,3 +230,6 @@
 
 - Role: ecommerce
   - Removed `SEGMENT_KEY` which is no longer used.  Segment key is now defined in DB configuration. (https://github.com/edx/ecommerce/pull/1121)
+
+- Role: edxapp
+  - Added `EDXAPP_BLOCK_STRUCTURES_SETTINGS` to configure S3-backed Course Block Structures.

playbooks/roles/edxapp/defaults/main.yml

@@ -635,6 +635,21 @@ EDXAPP_SESSION_SAVE_EVERY_REQUEST: false
 
 EDXAPP_SESSION_COOKIE_SECURE: false
 
+# Course Block Structures
+EDXAPP_BLOCK_STRUCTURES_SETTINGS:
+  # Delay, in seconds, after a new edit of a course is published
+  # before updating the block structures cache.  This is needed
+  # for a better chance at getting the latest changes when there
+  # are secondary reads in sharded mongoDB clusters. See TNL-5041
+  # for more info.
+  COURSE_PUBLISH_TASK_DELAY: 30
+
+  # Delay, in seconds, between retry attempts if a task fails.
+  TASK_DEFAULT_RETRY_DELAY: 30
+
+  # Maximum number of retries per task.
+  TASK_MAX_RETRIES: 5
+
 #-------- Everything below this line is internal to the role ------------
 
 #Use YAML references (& and *) and hash merge <<: to factor out shared settings
@@ -959,6 +974,7 @@ generic_env_config:  &edxapp_generic_env
   REGISTRATION_EXTRA_FIELDS: "{{ EDXAPP_REGISTRATION_EXTRA_FIELDS }}"
   XBLOCK_SETTINGS: "{{ EDXAPP_XBLOCK_SETTINGS }}"
   EDXMKTG_USER_INFO_COOKIE_NAME: "{{ EDXAPP_EDXMKTG_USER_INFO_COOKIE_NAME }}"
+  BLOCK_STRUCTURES_SETTINGS: "{{ EDXAPP_BLOCK_STRUCTURES_SETTINGS }}"
 
   # Deprecated, maintained for backward compatibility
   COMPREHENSIVE_THEME_DIR: "{{ EDXAPP_COMPREHENSIVE_THEME_DIR }}"