list_objects fails in get_etag_element

[tmbdev]

Simple list_objects usage fails with the latest Minio server (IP address and keys replaced with dummies).

from minio import Minio
client = Minio("1.1.1.1:9000", access_key="xxxx", secret_key="xxxx", secure=False)
list(client.list_objects("imgclass"))

AttributeError                            Traceback (most recent call last)
<ipython-input-2-eef24a623bf5> in <module>()
      1 client = Minio("1.1.1.1:9000", access_key="xxxx", secret_key="xxxx", secure=False)
----> 2 list(client.list_objects("imgclass"))
from minio import Minio
client = Minio("1.1.1.1:9000", access_key="xxxx", secret_key="xxxx", secure=False)
list(client.list_objects("imgclass"))

AttributeError                            Traceback (most recent call last)
<ipython-input-2-eef24a623bf5> in <module>()
      1 client = Minio("1.1.1.1:9000", access_key="xxxx", secret_key="xxxx", secure=False)
----> 2 list(client.list_objects("imgclass"))

/usr/local/lib/python2.7/dist-packages/minio-2.0.6-py2.7.egg/minio/api.pyc in list_objects(self, bucket_name, prefix, recursive)
    885                                       headers=headers)
    886             objects, is_truncated, marker = parse_list_objects(response.data,
--> 887                                                                bucket_name=bucket_name)
    888             for obj in objects:
    889                 yield obj

/usr/local/lib/python2.7/dist-packages/minio-2.0.6-py2.7.egg/minio/parsers.pyc in parse_list_objects(data, bucket_name)
    233         bucket_name,
    234         root.findall('Contents'),
--> 235         root.findall('CommonPrefixes')
    236     )
    237 

/usr/local/lib/python2.7/dist-packages/minio-2.0.6-py2.7.egg/minio/parsers.pyc in _parse_objects_from_xml_elts(bucket_name, contents, common_prefixes)
    202                content.get_etag_elem(),
    203                content.get_int_elem('Size'))
--> 204         for content in contents
    205     ]
    206 

/usr/local/lib/python2.7/dist-packages/minio-2.0.6-py2.7.egg/minio/parsers.pyc in get_etag_elem(self)
    124 
    125         """
--> 126         return self.get_child_text('ETag').replace('"', '')
    127 
    128     def get_int_elem(self, name):

AttributeError: 'NoneType' object has no attribute 'replace'
/usr/local/lib/python2.7/dist-packages/minio-2.0.6-py2.7.egg/minio/api.pyc in list_objects(self, bucket_name, prefix, recursive)
    885                                       headers=headers)
    886             objects, is_truncated, marker = parse_list_objects(response.data,
--> 887                                                                bucket_name=bucket_name)
    888             for obj in objects:
    889                 yield obj

/usr/local/lib/python2.7/dist-packages/minio-2.0.6-py2.7.egg/minio/parsers.pyc in parse_list_objects(data, bucket_name)
    233         bucket_name,
    234         root.findall('Contents'),
--> 235         root.findall('CommonPrefixes')
    236     )
    237 

/usr/local/lib/python2.7/dist-packages/minio-2.0.6-py2.7.egg/minio/parsers.pyc in _parse_objects_from_xml_elts(bucket_name, contents, common_prefixes)
    202                content.get_etag_elem(),
    203                content.get_int_elem('Size'))
--> 204         for content in contents
    205     ]
    206 

/usr/local/lib/python2.7/dist-packages/minio-2.0.6-py2.7.egg/minio/parsers.pyc in get_etag_elem(self)
    124 
    125         """
--> 126         return self.get_child_text('ETag').replace('"', '')
    127 
    128     def get_int_elem(self, name):

AttributeError: 'NoneType' object has no attribute 'replace'

[harshavardhana]

Thanks @tmbdev we will take a look.

[vadmeste]

Taking this

[vadmeste]

This is a regression in the Minio server instead, bisecting pointed to this bad commit: minio/minio@1c699d8.. It seems we have a missing unit test for this case too.

[vadmeste]

This is a regression in the Minio server instead, bisecting pointed to this bad commit: minio/minio@1c699d8.. It seems we have a missing unit test for this case too.

This is not a Minio bug, it is just ETag which becomes optional.