Paginate ebs_snapshot_count check (#32)

* use paginator for ebs_snapshot_count
* fix up error log wording when fail to get current value
* set default PaginationConfig with PageSize=100

aws_quota/check/ebs.py

@@ -10,4 +10,4 @@ class SnapshotCountCheck(QuotaCheck):
 
     @property
     def current(self):
-        return len(self.boto_session.client('ec2').describe_snapshots(OwnerIds=['self'])['Snapshots'])
+        return self.count_paginated_results("ec2", "describe_snapshots", "Snapshots", {"OwnerIds": ["self"]})

aws_quota/check/quota_check.py

@@ -29,7 +29,8 @@ def __str__(self) -> str:
 
     def count_paginated_results(self, service: str, method: str, key: str, paginate_args: dict = {}) -> int:
         paginator = self.boto_session.client(service).get_paginator(method)
-        page_iterable = paginator.paginate(**paginate_args)
+        pagination_config = {'PageSize': 100}
+        page_iterable = paginator.paginate(**{"PaginationConfig": pagination_config, **paginate_args})
         return sum(len(page[key]) for page in page_iterable)
 
     @property

aws_quota/prometheus.py

@@ -181,7 +181,7 @@ async def get_currents_job(self):
                         checks_to_drop.append(e.check)
                     except Exception:
                         logger.error(
-                            'getting maximum of quota %s failed', check)
+                            'getting current value of quota %s failed', check)
 
                 for check in checks_to_drop:
                     self.checks.remove(check)