Adding cache implementation for the programs api.

ECOM-2832

openedx/core/djangoapps/programs/utils.py

@@ -1,6 +1,7 @@
 """
 Helper methods for Programs.
 """
+from django.core.cache import cache
 from edx_rest_api_client.client import EdxRestApiClient
 from openedx.core.djangoapps.programs.models import ProgramsApiConfig
 
@@ -20,3 +21,29 @@ def programs_api_client(api_url, jwt_access_token):
         api_url,
         jwt=jwt_access_token
     )
+
+
+def is_cache_enabled_for_programs():    # pylint: disable=invalid-name
+    """Returns a Boolean indicating whether responses from the Programs API
+    will be cached.
+    """
+    return ProgramsApiConfig.current().is_cache_enabled
+
+
+def set_cached_programs_response(programs_data):
+    """ Set cache value for the programs data with specific ttl.
+
+    Arguments:
+        programs_data (dict): Programs data in dictionary format
+    """
+    cache.set(
+        ProgramsApiConfig.PROGRAMS_API_CACHE_KEY,
+        programs_data,
+        ProgramsApiConfig.current().cache_ttl
+    )
+
+
+def get_cached_programs_response():
+    """ Get programs data from cache against cache key."""
+    cache_key = ProgramsApiConfig.PROGRAMS_API_CACHE_KEY
+    return cache.get(cache_key)