Merge pull request #446 from reef-technologies/yed/gh934-parts-size-comparison

provide error message for misaligned part sizes

Author: mjurbanski-reef

b2sdk/transfer/emerge/planner/planner.py

@@ -15,6 +15,7 @@
 from collections import deque
 from math import ceil
 
+from b2sdk.exception import InvalidUserInput
 from b2sdk.http_constants import (
     DEFAULT_MAX_PART_SIZE,
     DEFAULT_MIN_PART_SIZE,
@@ -94,7 +95,14 @@ def __init__(
         self.min_part_size = min_part_size or DEFAULT_MIN_PART_SIZE
         self.recommended_upload_part_size = recommended_upload_part_size or DEFAULT_RECOMMENDED_UPLOAD_PART_SIZE
         self.max_part_size = max_part_size or DEFAULT_MAX_PART_SIZE
-        assert self.min_part_size <= self.recommended_upload_part_size <= self.max_part_size
+        if self.min_part_size > self.recommended_upload_part_size:
+            raise InvalidUserInput(
+                f"min_part_size value ({self.min_part_size}) exceeding recommended_upload_part_size value ({self.recommended_upload_part_size})"
+            )
+        if self.recommended_upload_part_size > self.max_part_size:
+            raise InvalidUserInput(
+                f"recommended_upload_part_size value ({self.recommended_upload_part_size}) exceeding max_part_size value ({self.max_part_size})"
+            )
 
     @classmethod
     def from_account_info(

changelog.d/+upload-check-replace-assert.changed.md

@@ -0,0 +1 @@
+Replace blank `assert` with exception when size values for parts upload are misaligned.