🔧(search) add elastic search client custom settings

Add settings that permit to configure elastic search client with custom
configuration like custom timeouts. Closes openfun#1613

CHANGELOG.md

@@ -12,6 +12,11 @@ Versioning](https://semver.org/spec/v2.0.0.html).
 
 - Update frontend overriding system to allow to override any frontend module.
 
+## Added
+
+- Add settings that permit to configure elastic search client with custom
+  configuration like custom timeouts.
+
 ## [2.13.0] - 2022-02-18
 
 ### Added

sandbox/settings.py

@@ -315,6 +315,13 @@ class Base(StyleguideMixin, DRFMixin, RichieCoursesConfigurationMixin, Configura
         default="richie", environ_name="RICHIE_ES_INDICES_PREFIX", environ_prefix=None
     )
     RICHIE_ES_STATE_WEIGHTS = values.ListValue(None)
+    # Example to change the timeout: RICHIE_ES_KWARGS={'timeout': 30}
+    RICHIE_ES_KWARGS = values.DictValue(
+        {}, environ_name="RICHIE_ES_KWARGS", environ_prefix=None
+    )
+    RICHIE_ES_CREATE_INDEX_KWARGS = values.DictValue(
+        {}, environ_name="RICHIE_ES_CREATE_INDEX_KWARGS", environ_prefix=None
+    )
 
     # LTI Content
     RICHIE_LTI_PROVIDERS = {

src/richie/apps/search/__init__.py

@@ -10,7 +10,8 @@
 default_app_config = "richie.apps.search.apps.SearchConfig"
 
 ES_CLIENT = ElasticsearchClientCompat7to6(
-    [getattr(settings, "RICHIE_ES_HOST", "elasticsearch")]
+    [getattr(settings, "RICHIE_ES_HOST", "elasticsearch")],
+    **getattr(settings, "RICHIE_ES_KWARGS", {}),
 )
 
 ES_INDICES_CLIENT = ElasticsearchIndicesClientCompat7to6(ES_CLIENT)

src/richie/apps/search/index_manager.py

@@ -46,7 +46,10 @@ def perform_create_index(indexable, logger=None):
     # Create the new index
     if logger:
         logger.info(f'Creating a new Elasticsearch index "{new_index:s}"...')
-    ES_INDICES_CLIENT.create(index=new_index)
+    ES_INDICES_CLIENT.create(
+        index=new_index,
+        **getattr(settings, "RICHIE_ES_CREATE_INDEX_KWARGS", {}),
+    )
 
     # The index needs to be closed before we set an analyzer
     ES_INDICES_CLIENT.close(index=new_index)