add some logging

osdu_az/partition/partition_service.py

@@ -30,7 +30,8 @@ class PartitionService:
     @staticmethod
     async def get_partition(data_partition_id: str) -> PartitionInfo:
         partition_info = PartitionsCache.get(data_partition_id)
-        if not partition_info:
+        if partition_info is None:
+            _LOGGER.info(f'Partition info "{data_partition_id}" not cached => fetch it')
             partition_info = await PartitionService._partition_client().get_partition(data_partition_id)
             if partition_info:
                 _LOGGER.info(f'PartitionService fetching partition info for "{data_partition_id}"')

osdu_az/partition/partitions_cache.py

+import logging
 from cachetools import TTLCache
 
+_LOGGER = logging.getLogger(__name__)
+
 
 class PartitionsCache:
     partitions_cache = TTLCache(maxsize=100, ttl=300)
@@ -10,6 +13,7 @@ class PartitionsCache:
 
     @staticmethod
     def set(data_partition_id: str, partition_info):
+        _LOGGER.info(f"set in partition cache {PartitionsCache} info from '{data_partition_id}'")
         PartitionsCache.partitions_cache[data_partition_id] = partition_info
 
     @staticmethod