def GET(self, req):
"""
Handles List Multipart Uploads
"""
log_s3api_command(req, 'list-multipart-uploads')
def separate_uploads(uploads, prefix, delimiter):
"""
separate_uploads will separate uploads into non_delimited_uploads
(a subset of uploads) and common_prefixes according to the
specified delimiter. non_delimited_uploads is a list of uploads
which exclude the delimiter. common_prefixes is a set of prefixes
prior to the specified delimiter. Note that the prefix in the
common_prefixes includes the delimiter itself.
i.e. if '/' delimiter specified and then the uploads is consists of
['foo', 'foo/bar'], this function will return (['foo'], ['foo/']).
:param uploads: A list of uploads dictionary
:param prefix: A string of prefix reserved on the upload path.
(i.e. the delimiter must be searched behind the
prefix)
:param delimiter: A string of delimiter to split the path in each
upload
:return (non_delimited_uploads, common_prefixes)
"""
(prefix, delimiter) = \
utf8encode(prefix, delimiter)
non_delimited_uploads = []
common_prefixes = set()
for upload in uploads:
key = upload['key']
end = key.find(delimiter, len(prefix))
if end >= 0:
common_prefix = key[:end + len(delimiter)]
common_prefixes.add(common_prefix)
else:
non_delimited_uploads.append(upload)
return non_delimited_uploads, sorted(common_prefixes)
encoding_type = req.params.get('encoding-type')
if encoding_type is not None and encoding_type != 'url':
err_msg = 'Invalid Encoding Method specified in Request'
raise InvalidArgument('encoding-type', encoding_type, err_msg)
keymarker = req.params.get('key-marker', '')
uploadid = req.params.get('upload-id-marker', '')
maxuploads = req.get_validated_param('max-uploads',
DEFAULT_MAX_UPLOADS,
DEFAULT_MAX_UPLOADS)
query = {
'format': 'json',
'limit': maxuploads + 1,
}
if uploadid and keymarker:
query.update({'marker': '%s/%s' % (keymarker, uploadid)})
elif keymarker:
query.update({'marker': '%s/~' % (keymarker)})
if 'prefix' in req.params:
query.update({'prefix': req.params['prefix']})
container = req.container_name + MULTIUPLOAD_SUFFIX
try:
req.environ['oio.list_mpu'] = True
resp = req.get_response(self.app, container=container, query=query)
objects = json.loads(resp.body)
except NoSuchBucket:
# Assume NoSuchBucket as no uploads
objects = []
def object_to_upload(object_info):
obj, upid = object_info['name'].rsplit('/', 1)
obj_dict = {
'key': obj,
'upload_id': upid,
'last_modified': object_info['last_modified']
}
return obj_dict
# uploads is a list consists of dict, {key, upload_id, last_modified}
# Note that pattern matcher will drop whole segments objects like as
# object_name/upload_id/1.
pattern = re.compile('/[0-9]+$')
uploads = [
object_to_upload(obj) for obj in objects
if pattern.search(obj.get('name', '')) is None
]
prefixes = []
if 'delimiter' in req.params:
prefix = req.params.get('prefix', '')
delimiter = req.params['delimiter']
uploads, prefixes = \
separate_uploads(uploads, prefix, delimiter)
if len(uploads) > maxuploads:
uploads = uploads[:maxuploads]
truncated = True
else:
truncated = False
nextkeymarker = ''
nextuploadmarker = ''
if len(uploads) > 1:
nextuploadmarker = uploads[-1]['upload_id']
nextkeymarker = uploads[-1]['key']
result_elem = Element('ListMultipartUploadsResult')
if encoding_type is not None:
result_elem.encoding_type = encoding_type
SubElement(result_elem, 'Bucket').text = req.container_name
SubElement(result_elem, 'KeyMarker').text = keymarker
SubElement(result_elem, 'UploadIdMarker').text = uploadid
SubElement(result_elem, 'NextKeyMarker').text = nextkeymarker
SubElement(result_elem, 'NextUploadIdMarker').text = nextuploadmarker
if 'delimiter' in req.params:
SubElement(result_elem, 'Delimiter').text = \
req.params['delimiter']
if 'prefix' in req.params:
SubElement(result_elem, 'Prefix').text = req.params['prefix']
SubElement(result_elem, 'MaxUploads').text = str(maxuploads)
if encoding_type is not None:
SubElement(result_elem, 'EncodingType').text = encoding_type
SubElement(result_elem, 'IsTruncated').text = \
'true' if truncated else 'false'
# TODO: don't show uploads which are initiated before this bucket is
# created.
for u in uploads:
upload_elem = SubElement(result_elem, 'Upload')
SubElement(upload_elem, 'Key').text = u['key']
SubElement(upload_elem, 'UploadId').text = u['upload_id']
initiator_elem = SubElement(upload_elem, 'Initiator')
SubElement(initiator_elem, 'ID').text = req.user_id
SubElement(initiator_elem, 'DisplayName').text = req.user_id
owner_elem = SubElement(upload_elem, 'Owner')
SubElement(owner_elem, 'ID').text = req.user_id
SubElement(owner_elem, 'DisplayName').text = req.user_id
SubElement(upload_elem, 'StorageClass').text = 'STANDARD'
SubElement(upload_elem, 'Initiated').text = \
u['last_modified'][:-3] + 'Z'
for p in prefixes:
elem = SubElement(result_elem, 'CommonPrefixes')
SubElement(elem, 'Prefix').text = p
body = tostring(result_elem, encoding_type=encoding_type)
return HTTPOk(body=body, content_type='application/xml')
def GET(self, req):
"""
Handles List Parts.
"""
log_s3api_command(req, 'list-parts')
def filter_part_num_marker(o):
try:
num = int(os.path.basename(o['name']))
return num > part_num_marker
except ValueError:
return False
encoding_type = req.params.get('encoding-type')
if encoding_type is not None and encoding_type != 'url':
err_msg = 'Invalid Encoding Method specified in Request'
raise InvalidArgument('encoding-type', encoding_type, err_msg)
upload_id = req.params['uploadId']
_check_upload_info(req, self.app, upload_id)
maxparts = req.get_validated_param('max-parts',
DEFAULT_MAX_PARTS_LISTING,
CONF.max_parts_listing)
part_num_marker = req.get_validated_param('part-number-marker', 0)
query = {
'format': 'json',
'limit': maxparts + 1,
'prefix': '%s/%s/' % (req.object_name, upload_id),
'delimiter': '/'
}
container = req.container_name + MULTIUPLOAD_SUFFIX
resp = req.get_response(self.app,
container=container,
obj='',
query=query)
objects = json.loads(resp.body)
last_part = 0
# If the caller requested a list starting at a specific part number,
# construct a sub-set of the object list.
objList = filter(filter_part_num_marker, objects)
# pylint: disable-msg=E1103
objList.sort(key=lambda o: int(o['name'].split('/')[-1]))
if len(objList) > maxparts:
objList = objList[:maxparts]
truncated = True
else:
truncated = False
# TODO: We have to retrieve object list again when truncated is True
# and some objects filtered by invalid name because there could be no
# enough objects for limit defined by maxparts.
if objList:
o = objList[-1]
last_part = os.path.basename(o['name'])
result_elem = Element('ListPartsResult')
if encoding_type is not None:
result_elem.encoding_type = encoding_type
SubElement(result_elem, 'Bucket').text = req.container_name
SubElement(result_elem, 'Key').text = req.object_name
SubElement(result_elem, 'UploadId').text = upload_id
initiator_elem = SubElement(result_elem, 'Initiator')
SubElement(initiator_elem, 'ID').text = req.user_id
SubElement(initiator_elem, 'DisplayName').text = req.user_id
owner_elem = SubElement(result_elem, 'Owner')
SubElement(owner_elem, 'ID').text = req.user_id
SubElement(owner_elem, 'DisplayName').text = req.user_id
SubElement(result_elem, 'StorageClass').text = 'STANDARD'
SubElement(result_elem, 'PartNumberMarker').text = str(part_num_marker)
SubElement(result_elem, 'NextPartNumberMarker').text = str(last_part)
SubElement(result_elem, 'MaxParts').text = str(maxparts)
if 'encoding-type' in req.params:
SubElement(result_elem, 'EncodingType').text = \
req.params['encoding-type']
SubElement(result_elem, 'IsTruncated').text = \
'true' if truncated else 'false'
for i in objList:
part_elem = SubElement(result_elem, 'Part')
SubElement(part_elem, 'PartNumber').text = i['name'].split('/')[-1]
SubElement(part_elem, 'LastModified').text = \
i['last_modified'][:-3] + 'Z'
SubElement(part_elem, 'ETag').text = '"%s"' % i['hash']
SubElement(part_elem, 'Size').text = str(i['bytes'])
body = tostring(result_elem, encoding_type=encoding_type)
return HTTPOk(body=body, content_type='application/xml')
def GET(self, req):
"""
Handle GET Bucket (List Objects) request
"""
max_keys = req.get_validated_param('max-keys', CONF.max_bucket_listing)
# TODO: Separate max_bucket_listing and default_bucket_listing
tag_max_keys = max_keys
max_keys = min(max_keys, CONF.max_bucket_listing)
encoding_type = req.params.get('encoding-type')
if encoding_type is not None and encoding_type != 'url':
err_msg = 'Invalid Encoding Method specified in Request'
raise InvalidArgument('encoding-type', encoding_type, err_msg)
query = {
'format': 'json',
'limit': max_keys + 1,
}
if 'marker' in req.params:
query.update({'marker': req.params['marker']})
if 'prefix' in req.params:
query.update({'prefix': req.params['prefix']})
if 'delimiter' in req.params:
query.update({'delimiter': req.params['delimiter']})
# GET Bucket (List Objects) Version 2 parameters
is_v2 = int(req.params.get('list-type', '1')) == 2
fetch_owner = False
if is_v2:
if 'start-after' in req.params:
query.update({'marker': req.params['start-after']})
# continuation-token overrides start-after
if 'continuation-token' in req.params:
decoded = b64decode(req.params['continuation-token'])
query.update({'marker': decoded})
if 'fetch-owner' in req.params:
fetch_owner = config_true_value(req.params['fetch-owner'])
resp = req.get_response(self.app, query=query)
objects = json.loads(resp.body)
if 'versions' in req.params:
req.container_name += VERSIONING_SUFFIX
query['reverse'] = 'true'
try:
resp = req.get_response(self.app, query=query)
versioned_objects = json.loads(resp.body)
prefixes = set()
for o in versioned_objects:
if 'name' in o:
# The name looks like this:
# '%03x%s/%s' % (len(name), name, version)
o['name'], o['version_id'] = \
o['name'][3:].rsplit('/', 1)
else:
prefixes.add(o['subdir'])
# suppress duplicated prefixes
for o in list(objects):
if 'subdir' in o and o['subdir'] in prefixes:
objects.remove(o)
objects.extend(versioned_objects)
except NoSuchBucket:
# the bucket may not be versioned
pass
req.container_name = req.container_name[:-len(VERSIONING_SUFFIX)]
objects.sort(key=lambda o: o.get('name') or o.get('subdir'))
for o in objects:
if 'subdir' not in o and not o.get('version_id'):
info = req.get_object_info(
self.app, object_name=o['name'].encode('utf-8'))
o['sysmeta_version_id'] = info.get('sysmeta', {}).get(
'version-id', 'null')
if 'versions' in req.params:
elem = Element('ListVersionsResult')
else:
elem = Element('ListBucketResult')
if encoding_type is not None:
elem.encoding_type = encoding_type
SubElement(elem, 'Name').text = req.container_name
SubElement(elem, 'Prefix').text = req.params.get('prefix')
# Filter objects according to version-id-marker and key-marker
v_marker = req.params.get('version-id-marker')
k_marker = req.params.get('key-marker')
k_marker_matched = not bool(k_marker)
if 'versions' in req.params and (v_marker or k_marker):
to_delete = []
for i, o in enumerate(objects):
if 'subdir' not in o:
version_id = o.get('version_id',
o.get('sysmeta_version_id', 'null'))
if not k_marker_matched and k_marker != o['name']:
to_delete.append(i)
if k_marker == o['name']:
k_marker_matched = True
if k_marker == o['name'] and v_marker:
if v_marker == version_id:
v_marker = None
to_delete.append(i)
for i in reversed(to_delete):
objects.pop(i)
# in order to judge that truncated is valid, check whether
# max_keys + 1 th element exists in swift.
is_truncated = max_keys > 0 and len(objects) > max_keys
objects = objects[:max_keys]
if not is_v2:
if 'versions' in req.params:
SubElement(elem,
'KeyMarker').text = req.params.get('key-marker')
SubElement(elem, 'VersionIdMarker').text = req.params.get(
'version-id-marker')
else:
SubElement(elem, 'Marker').text = req.params.get('marker')
if is_truncated and 'delimiter' in req.params:
if 'name' in objects[-1]:
SubElement(elem, 'NextMarker').text = \
objects[-1]['name']
if 'subdir' in objects[-1]:
SubElement(elem, 'NextMarker').text = \
objects[-1]['subdir']
else:
if is_truncated:
if 'name' in objects[-1]:
SubElement(elem, 'NextContinuationToken').text = \
b64encode(objects[-1]['name'].encode('utf8'))
if 'subdir' in objects[-1]:
SubElement(elem, 'NextContinuationToken').text = \
b64encode(objects[-1]['subdir'].encode('utf8'))
if 'continuation-token' in req.params:
SubElement(elem, 'ContinuationToken').text = \
req.params['continuation-token']
if 'start-after' in req.params:
SubElement(elem, 'StartAfter').text = \
req.params['start-after']
SubElement(elem, 'KeyCount').text = str(len(objects))
SubElement(elem, 'MaxKeys').text = str(tag_max_keys)
if 'delimiter' in req.params:
SubElement(elem, 'Delimiter').text = req.params['delimiter']
if encoding_type is not None:
SubElement(elem, 'EncodingType').text = encoding_type
SubElement(elem, 'IsTruncated').text = \
'true' if is_truncated else 'false'
for o in objects:
if 'subdir' not in o:
if 'versions' in req.params:
version_id = o.get('version_id',
o.get('sysmeta_version_id', 'null'))
if o.get('content_type') == DELETE_MARKER_CONTENT_TYPE:
contents = SubElement(elem, 'DeleteMarker')
else:
contents = SubElement(elem, 'Version')
SubElement(contents, 'Key').text = \
o['name'].encode('utf-8')
SubElement(contents, 'VersionId').text = version_id
SubElement(
contents,
'IsLatest').text = str('version_id' not in o).lower()
else:
contents = SubElement(elem, 'Contents')
SubElement(contents, 'Key').text = \
o['name'].encode('utf-8')
SubElement(contents, 'LastModified').text = \
o['last_modified'][:-3] + 'Z'
if 's3_etag' in o.get('content_type', ''):
_, o['hash'] = extract_s3_etag(o['content_type'])
if contents.tag != 'DeleteMarker':
SubElement(contents, 'ETag').text = '"%s"' % o['hash']
SubElement(contents, 'Size').text = str(o['bytes'])
if fetch_owner or not is_v2:
owner = SubElement(contents, 'Owner')
SubElement(owner, 'ID').text = req.user_id
SubElement(owner, 'DisplayName').text = req.user_id
if contents.tag != 'DeleteMarker':
SubElement(contents, 'StorageClass').text = 'STANDARD'
for o in objects:
if 'subdir' in o:
common_prefixes = SubElement(elem, 'CommonPrefixes')
SubElement(common_prefixes, 'Prefix').text = \
o['subdir'].encode('utf-8')
body = tostring(elem, encoding_type=encoding_type)
resp = HTTPOk(body=body, content_type='application/xml')
origin = req.headers.get('Origin')
if origin:
rule = get_cors(self.app, req, "GET", origin)
if rule:
cors_fill_headers(req, resp, rule)
return resp
