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2064 lines (1704 loc) · 75.5 KB
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# -*- coding: utf-8 -*-
# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C)
# 2015, 2016, 2017 MinIO, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# pylint: disable=too-many-lines
"""
minio.api
~~~~~~~~~~~~
This module implements the API.
:copyright: (c) 2015, 2016, 2017 by MinIO, Inc.
:license: Apache 2.0, see LICENSE for more details.
"""
from __future__ import absolute_import
import io
import itertools
import json
import os
import platform
from datetime import datetime, timedelta
from threading import Thread
import certifi
import dateutil.parser
import urllib3
from . import __title__, __version__
from .compat import range # pylint: disable=redefined-builtin
from .compat import basestring, quote, urlencode, urlsplit
from .credentials import Chain, Credentials, EnvAWS, EnvMinio, Static
from .definitions import Object, UploadPart
from .error import (AccessDenied, InvalidArgumentError, InvalidSizeError,
InvalidXMLError, NoSuchBucket, ResponseError)
from .fold_case_dict import FoldCaseDict
from .helpers import (DEFAULT_PART_SIZE, MAX_MULTIPART_COUNT, MAX_PART_SIZE,
MAX_POOL_SIZE, MIN_PART_SIZE, amzprefix_user_metadata,
dump_http, get_md5_base64digest,
get_s3_region_from_endpoint, get_scheme_host,
get_sha256_hexdigest, get_target_url, is_amz_header,
is_non_empty_string, is_supported_header,
is_valid_bucket_name, is_valid_endpoint,
is_valid_notification_config, is_valid_policy_type,
is_valid_sse_c_object, is_valid_sse_object, mkdir_p,
optimal_part_info, read_full)
from .parsers import (parse_assume_role, parse_c
8000
opy_object,
parse_get_bucket_notification, parse_list_buckets,
parse_list_multipart_uploads, parse_list_objects,
parse_list_objects_v2, parse_list_parts,
parse_location_constraint, parse_multi_delete_response,
parse_multipart_upload_result,
parse_new_multipart_upload)
from .select import SelectObjectReader
from .signer import (_SIGN_V4_ALGORITHM, _UNSIGNED_PAYLOAD,
generate_credential_string, post_presign_signature,
presign_v4, sign_v4)
from .sse import SseCustomerKey
from .thread_pool import ThreadPool
from .xml_marshal import (marshal_bucket_notifications,
marshal_complete_multipart,
xml_marshal_bucket_constraint,
xml_marshal_bucket_encryption,
xml_marshal_delete_objects, xml_marshal_select,
xml_to_dict)
try:
from json.decoder import JSONDecodeError
except ImportError:
JSONDecodeError = ValueError
_DEFAULT_USER_AGENT = "MinIO ({os}; {arch}) {lib}/{ver}".format(
os=platform.system(), arch=platform.machine(),
lib=__title__, ver=__version__,
)
# Duration of 7 days in seconds
_MAX_EXPIRY_TIME = 604800 # 7 days in seconds
# Number of parallel workers which upload parts
_PARALLEL_UPLOADERS = 3
class Minio: # pylint: disable=too-many-public-methods
"""
Constructs a :class:`Minio <Minio>`.
Examples:
client = Minio('play.min.io')
client = Minio('s3.amazonaws.com', 'ACCESS_KEY', 'SECRET_KEY')
# To override auto bucket location discovery.
client = Minio('play.min.io', 'ACCESS_KEY', 'SECRET_KEY',
region='us-east-1')
:param endpoint: Hostname of the cloud storage server.
:param access_key: Access key to sign self._http.request with.
:param secret_key: Secret key to sign self._http.request with.
:param session_token: Session token to sign self._http.request with.
:param secure: Set this value if wish to make secure requests.
Default is True.
:param region: Set this value to override automatic bucket
location discovery.
:param timeout: Set this value to control how long requests
are allowed to run before being aborted.
:return: :class:`Minio <Minio>` object
**NOTE on concurrent usage:** The `Minio` object is thread safe when using
the Python `threading` library. Specifically, it is **NOT** safe to share
it between multiple processes, for example when using
`multiprocessing.Pool`. The solution is simply to create a new `Minio`
object in each process, and not share it between processes.
"""
# pylint: disable=too-many-function-args
def __init__(self, endpoint, access_key=None,
secret_key=None,
session_token=None,
secure=True,
region=None,
http_client=None,
credentials=None):
# Validate endpoint.
is_valid_endpoint(endpoint)
# Validate http client has correct base class.
if http_client and not isinstance(
http_client,
urllib3.poolmanager.PoolManager):
raise InvalidArgumentError(
'HTTP client should be of instance'
' `urllib3.poolmanager.PoolManager`'
)
# Default is a secured connection.
scheme = 'https://' if secure else 'http://'
self._region = region or get_s3_region_from_endpoint(endpoint)
self._region_map = dict()
self._endpoint_url = urlsplit(scheme + endpoint).geturl()
self._is_ssl = secure
self._access_key = access_key
self._secret_key = secret_key
self._session_token = session_token
self._user_agent = _DEFAULT_USER_AGENT
self._trace_output_stream = None
self._enable_s3_accelerate = False
self._accelerate_endpoint_url = scheme + 's3-accelerate.amazonaws.com'
self._credentials = credentials or Credentials(
provider=Chain(
providers=[
Static(access_key, secret_key, session_token),
EnvAWS(),
EnvMinio(),
]
)
)
# Load CA certificates from SSL_CERT_FILE file if set
ca_certs = os.environ.get('SSL_CERT_FILE') or certifi.where()
self._http = http_client or urllib3.PoolManager(
timeout=urllib3.Timeout.DEFAULT_TIMEOUT,
maxsize=MAX_POOL_SIZE,
cert_reqs='CERT_REQUIRED',
ca_certs=ca_certs,
retries=urllib3.Retry(
total=5,
backoff_factor=0.2,
8BD0
status_forcelist=[500, 502, 503, 504]
)
)
# Set application information.
def set_app_info(self, app_name, app_version):
"""
Sets your application name and version to
default user agent in the following format.
MinIO (OS; ARCH) LIB/VER APP/VER
Example:
client.set_app_info('my_app', '1.0.2')
:param app_name: application name.
:param app_version: application version.
"""
if not (app_name and app_version):
raise ValueError("Application name/version cannot be empty.")
self._user_agent = "{0} {1}/{2}".format(
_DEFAULT_USER_AGENT, app_name, app_version,
)
# enable HTTP trace.
def trace_on(self, stream):
"""
Enable http trace.
:param output_stream: Stream where trace is written to.
"""
if not stream:
raise ValueError('Input stream for trace output is invalid.')
# Save new output stream.
self._trace_output_stream = stream
# disable HTTP trace.
def trace_off(self):
"""
Disable HTTP trace.
"""
self._trace_output_stream = None
# S3 Transfer Accelerate
def use_s3_accelerate(self, value):
"""Enable AWS S3 accelerated endpoint."""
_, host = get_scheme_host(urlsplit(self._endpoint_url))
if 's3.amazonaws.com' in host:
self._enable_s3_accelerate = value is True
# Select Object Content
def select_object_content(self, bucket_name, object_name, opts):
"""
Executes SQL requests on objects having data in CSV, JSON
or Parquet formats.
Examples:
data = client.select_object_content('foo', 'test.csv', options)
:param bucket_name: Bucket to read object from
:param object_name: Name of object to read
:param options: Options for select object
"""
is_valid_bucket_name(bucket_name, False)
is_non_empty_string(object_name)
content = xml_marshal_select(opts)
url_values = {
"select": "",
"select-type": "2",
}
headers = {
'Content-Length': str(len(content)),
'Content-Md5': get_md5_base64digest(content)
}
content_sha256_hex = get_sha256_hexdigest(content)
response = self._url_open(
'POST',
bucket_name=bucket_name,
object_name=object_name,
query=url_values,
headers=headers,
body=content,
content_sha256=content_sha256_hex,
preload_content=False)
return SelectObjectReader(response)
# Bucket level
def make_bucket(self, bucket_name, location='us-east-1'):
"""
Make a new bucket on the server.
Optionally include Location.
['us-east-1', 'us-east-2', 'us-west-1', 'us-west-2', 'eu-west-1',
'eu-west-2', 'ca-central-1', 'eu-central-1', 'sa-east-1',
'cn-north-1', 'ap-southeast-1', 'ap-southeast-2',
'ap-northeast-1', 'ap-northeast-2']
Examples:
minio.make_bucket('foo')
minio.make_bucket('foo', 'us-west-1')
:param bucket_name: Bucket to create on server
:param location: Location to create bucket on
"""
is_valid_bucket_name(bucket_name, True)
# Default region for all requests.
region = self._region or 'us-east-1'
# Validate if caller requested bucket location is same as current
# region
if self._region and self._region != location:
raise InvalidArgumentError(
"Configured region {0}, requested {1}".format(
self._region, location))
method = 'PUT'
# Set user agent once before the request.
headers = {'User-Agent': self._user_agent}
content = None
if location and location != 'us-east-1':
content = xml_marshal_bucket_constraint(location)
headers['Content-Length'] = str(len(content))
headers['Content-Md5'] = get_md5_base64digest(content)
content_sha256_hex = get_sha256_hexdigest(content)
# In case of Amazon S3. The make bucket issued on already
# existing bucket would fail with 'AuthorizationMalformed'
# error if virtual style is used. So we default to 'path
# style' as that is the preferred method here. The final
# location of the 'bucket' is provided through XML
# LocationConstraint data with the request.
# Construct target url.
url = self._endpoint_url + '/' + bucket_name + '/'
# Get signature headers if any.
headers = sign_v4(method, url, region,
headers,
self._credentials,
content_sha256_hex,
datetime.utcnow())
if self._trace_output_stream:
dump_http(method, url, headers, None,
self._trace_output_stream)
response = self._http.urlopen(method, url,
body=content,
headers=headers)
if self._trace_output_stream:
dump_http(method, url, headers, response,
self._trace_output_stream)
if response.status != 200:
raise ResponseError(response, method, bucket_name).get_exception()
self._set_bucket_region(bucket_name, region=location)
def list_buckets(self):
"""
List all buckets owned by the user.
Example:
bucket_list = minio.list_buckets()
for bucket in bucket_list:
print(bucket.name, bucket.created_date)
:return: An iterator of buckets owned by the current user.
"""
method = 'GET'
url = get_target_url(self._endpoint_url)
# Set user agent once before the request.
headers = {'User-Agent': self._user_agent}
# default for all requests.
region = self._region or 'us-east-1'
# Get signature headers if any.
headers = sign_v4(method, url, region,
headers,
self._credentials,
None, datetime.utcnow())
if self._trace_output_stream:
dump_http(method, url, headers, None,
self._trace_output_stream)
response = self._http.urlopen(method, url,
body=None,
headers=headers)
if self._trace_output_stream:
dump_http(method, url, headers, response,
self._trace_output_stream)
if response.status != 200:
raise ResponseError(response, method).get_exception()
try:
return parse_list_buckets(response.data)
except InvalidXMLError:
if self._endpoint_url.endswith("s3.amazonaws.com") and (
not self._access_key or not self._secret_key):
raise AccessDenied(response)
def bucket_exists(self, bucket_name):
"""
Check if the bucket exists and if the user has access to it.
:param bucket_name: To test the existence and user access.
:return: True on success.
"""
is_valid_bucket_name(bucket_name, False)
try:
self._url_open('HEAD', bucket_name=bucket_name)
return True
except NoSuchBucket:
# If bucket has not been created yet, MinIO returns NoSuchBucket
# error.
return False
def remove_bucket(self, bucket_name):
"""
Remove a bucket.
:param bucket_name: Bucket to remove
"""
is_valid_bucket_name(bucket_name, False)
self._url_open('DELETE', bucket_name=bucket_name)
# Make sure to purge bucket_name from region cache.
self._delete_bucket_region(bucket_name)
def get_bucket_policy(self, bucket_name):
"""
Get bucket policy of given bucket name.
:param bucket_name: Bucket name.
"""
is_valid_bucket_name(bucket_name, False)
response = self._url_open("GET",
bucket_name=bucket_name,
query={"policy": ""})
return response.data
def delete_bucket_policy(self, bucket_name):
"""Delete policy of a bucket."""
self._url_open("DELETE",
bucket_name=bucket_name,
query={"policy": ""})
def set_bucket_policy(self, bucket_name, policy):
"""
Set bucket policy of given bucket name.
:param bucket_name: Bucket name.
:param policy: Access policy/ies in string format.
"""
is_valid_policy_type(policy)
is_valid_bucket_name(bucket_name, False)
headers = {
'Content-Length': str(len(policy)),
'Content-Md5': get_md5_base64digest(policy)
}
content_sha256_hex = get_sha256_hexdigest(policy)
self._url_open("PUT",
bucket_name=bucket_name,
query={"policy": ""},
headers=headers,
body=policy,
content_sha256=content_sha256_hex)
def get_bucket_notification(self, bucket_name):
"""
Get notifications configured for the given bucket.
:param bucket_name: Bucket name.
"""
is_valid_bucket_name(bucket_name, False)
response = self._url_open(
"GET",
bucket_name=bucket_name,
query={"notification": ""},
)
data = response.data.decode('utf-8')
return parse_get_bucket_notification(data)
def set_bucket_notification(self, bucket_name, notifications):
"""
Set the given notifications on the bucket.
:param bucket_name: Bucket name.
:param notifications: Notifications structure
"""
is_valid_bucket_name(bucket_name, False)
is_valid_notification_config(notifications)
content = marshal_bucket_notifications(notifications)
headers = {
'Content-Length': str(len(content)),
'Content-Md5': get_md5_base64digest(content)
}
content_sha256_hex = get_sha256_hexdigest(content)
self._url_open(
'PUT',
bucket_name=bucket_name,
query={"notification": ""},
headers=headers,
body=content,
content_sha256=content_sha256_hex
)
def remove_all_bucket_notification(self, bucket_name):
"""
Removes all bucket notification configs configured
previously, this call disable event notifications
on a bucket. This operation cannot be undone, to
set notifications again you should use
``set_bucket_notification``
:param bucket_name: Bucket name.
"""
is_valid_bucket_name(bucket_name, False)
content_bytes = marshal_bucket_notifications({})
headers = {
'Content-Length': str(len(content_bytes)),
'Content-Md5': get_md5_base64digest(content_bytes)
}
content_sha256_hex = get_sha256_hexdigest(content_bytes)
self._url_open(
'PUT',
bucket_name=bucket_name,
query={"notification": ""},
headers=headers,
body=content_bytes,
content_sha256=content_sha256_hex
)
# put_bucket_encryption sets default encryption configuration on an
# existing bucket.
def put_bucket_encryption(self, bucket_name, enc_config):
"""
Set default encryption configuration on a given bucket.
:param bucket_name: Bucket name.
:param enc_config: Default encryption configuration in dictionary
format.
"""
is_valid_bucket_name(bucket_name, False)
# 'Rule' is a list, so we need to go through each one of
# its key/value pair and collect the encryption values.
rules = enc_config['ServerSideEncryptionConfiguration']['Rule']
enc_config_xml = xml_marshal_bucket_encryption(rules)
headers = {
'Content-Length': str(len(enc_config_xml)),
'Content-Md5': get_md5_base64digest(enc_config_xml)
}
content_sha256_hex = get_sha256_hexdigest(enc_config_xml)
self._url_open("PUT",
bucket_name=bucket_name,
query={"encryption": ""},
headers=headers,
body=enc_config_xml,
content_sha256=content_sha256_hex
)
def get_bucket_encryption(self, bucket_name):
"""
Get default encryption configuration information on a given bucket.
:param bucket_name: Bucket name.
"""
is_valid_bucket_name(bucket_name, False)
response = self._url_open(
"GET",
bucket_name=bucket_name,
query={"encryption": ""}
)
return xml_to_dict(response.data.decode('utf-8'))
def delete_bucket_encryption(self, bucket_name):
"""
Remove default encryption configuration on a given bucket
This operation cannot be undone.
To set default encryption configuration on a bucket again,
you need to reuse ``set_bucket_encryption`` command.
:param bucket_name: Bucket name.
"""
is_valid_bucket_name(bucket_name, False)
self._url_open(
'DELETE',
bucket_name=bucket_name,
query={"encryption": ""}
)
def listen_bucket_notification(self, bucket_name, prefix='', suffix='',
events=('s3:ObjectCreated:*',
's3:ObjectRemoved:*',
's3:ObjectAccessed:*')):
"""
Yeilds new event notifications on a bucket, caller should iterate
to read new notifications.
NOTE: Notification is retried in case of `JSONDecodeError` otherwise
the function raises an exception.
:param bucket_name: Bucket name to listen event notifications from.
:param prefix: Object key prefix to filter notifications for.
:param suffix: Object key suffix to filter notifications for.
:param events: Enables notifications for specific event types.
of events.
"""
is_valid_bucket_name(bucket_name, False)
# If someone explicitly set prefix to None convert it to empty string.
prefix = prefix or ''
# If someone explicitly set suffix to None convert it to empty string.
suffix = suffix or ''
url_components = urlsplit(self._endpoint_url)
if url_components.hostname == 's3.amazonaws.com':
raise InvalidArgumentError(
'Listening for event notifications on a bucket is a MinIO '
'specific extension to bucket notification API. It is not '
'supported by Amazon S3')
query = {
'prefix': prefix,
'suffix': suffix,
'events': events,
}
while True:
response = self._url_open('GET', bucket_name=bucket_name,
query=query, preload_content=False)
try:
for line in response.stream():
if line.strip():
if hasattr(line, 'decode'):
line = line.decode('utf-8')
event = json.loads(line)
if event['Records']:
yield event
except JSONDecodeError:
response.close()
continue
def fput_object(self, bucket_name, object_name, file_path,
content_type='application/octet-stream',
metadata=None, sse=None, progress=None,
part_size=DEFAULT_PART_SIZE):
"""
Add a new object to the cloud storage server.
Examples:
minio.fput_object('foo', 'bar', 'filepath', 'text/plain')
:param bucket_name: Bucket to read object from.
:param object_name: Name of the object to read.
:param file_path: Local file path to be uploaded.
:param content_type: Content type of the object.
:param metadata: Any additional metadata to be uploaded along
with your PUT request.
:param progress: A progress object
:param part_size: Multipart part size
:return: etag
"""
# Open file in 'read' mode.
with open(file_path, 'rb') as file_data:
file_size = os.stat(file_path).st_size
return self.put_object(bucket_name, object_name, file_data,
file_size, content_type, metadata, sse,
progress, part_size)
def fget_object(self, bucket_name, object_name, file_path,
request_headers=None, sse=None):
"""
Retrieves an object from a bucket and writes at file_path.
Examples:
minio.fget_object('foo', 'bar', 'localfile')
:param bucket_name: Bucket to read object from.
:param object_name: Name of the object to read.
:param file_path: Local file path to save the object.
:param request_headers: Any additional headers to be added with GET
request.
"""
is_valid_bucket_name(bucket_name, False)
is_non_empty_string(object_name)
stat = self.stat_object(bucket_name, object_name, sse)
if os.path.isdir(file_path):
raise OSError("file is a directory.")
# Create top level directory if needed.
top_level_dir = os.path.dirname(file_path)
if top_level_dir:
mkdir_p(top_level_dir)
# Write to a temporary file "file_path.part.minio" before saving.
file_part_path = file_path + stat.etag + '.part.minio'
# Open file in 'overwrite' mode.
with open(file_part_path, 'wb') as file_part_data:
# Save current file_part statinfo.
file_statinfo = os.stat(file_part_path)
# Get partial object.
response = self._get_partial_object(
bucket_name, object_name,
offset=file_statinfo.st_size,
length=0,
request_headers=request_headers,
sse=sse
)
# Save content_size to verify if we wrote more data.
content_size = int(response.headers['content-length'])
# Save total_written.
total_written = 0
for data in response.stream(amt=1024 * 1024):
file_part_data.write(data)
total_written += len(data)
# Release the connection from the response at this point.
response.release_conn()
# Verify if we wrote data properly.
if total_written < content_size:
msg = ('Data written {0} bytes is smaller than the specified'
' size {1} bytes').format(total_written, content_size)
raise InvalidSizeError(msg)
if total_written > content_size:
msg = ('Data written {0} bytes is in excess than the specified'
' size {1} bytes').format(total_written, content_size)
raise InvalidSizeError(msg)
# Delete existing file to be compatible with Windows
if os.path.exists(file_path):
os.remove(file_path)
# Rename with destination file path
os.rename(file_part_path, file_path)
# Return the stat
return stat
def get_object(self, bucket_name, object_name, request_headers=None,
sse=None):
"""
Retrieves an object from a bucket.
This function returns an object that contains an open network
connection to enable incremental consumption of the
response. To re-use the connection (if desired) on subsequent
requests, the user needs to call `release_conn()` on the
returned object after processing.
Examples:
my_object = minio.get_partial_object('foo', 'bar')
:param bucket_name: Bucket to read object from
:param object_name: Name of object to read
:param request_headers: Any additional headers to be added with GET
request.
:return: :class:`urllib3.response.HTTPResponse` object.
"""
is_valid_bucket_name(bucket_name, False)
is_non_empty_string(object_name)
return self._get_partial_object(bucket_name,
object_name,
request_headers=request_headers,
sse=sse)
def get_partial_object(self, bucket_name, object_name, offset=0, length=0,
request_headers=None, sse=None):
"""
Retrieves an object from a bucket.
Optionally takes an offset and length of data to retrieve.
This function returns an object that contains an open network
connection to enable incremental consumption of the
response. To re-use the connection (if desired) on subsequent
requests, the user needs to call `release_conn()` on the
returned object after processing.
Examples:
partial_object = minio.get_partial_object('foo', 'bar', 2, 4)
:param bucket_name: Bucket to retrieve object from
:param object_name: Name of object to retrieve
:param offset: Optional offset to retrieve bytes from.
Must be >= 0.
:param length: Optional number of bytes to retrieve.
Must be an integer.
:param request_headers: Any additional headers to be added with GET
request.
:return: :class:`urllib3.response.HTTPResponse` object.
"""
is_valid_bucket_name(bucket_name, False)
is_non_empty_string(object_name)
return self._get_partial_object(bucket_name,
object_name,
offset, length,
request_headers=request_headers,
sse=sse)
def copy_object(self, bucket_name, object_name, object_source,
conditions=None, source_sse=None, sse=None, metadata=None):
"""
Copy a source object on object storage server to a new object.
NOTE: Maximum object size supported by this API is 5GB.
Examples:
:param bucket_name: Bucket of new object.
:param object_name: Name of new object.
:param object_source: Source object to be copied.
:param conditions: :class:`CopyConditions` object. Collection of
supported CopyObject conditions.
:param metadata: Any user-defined metadata to be copied along with
destination object.
"""
is_valid_bucket_name(bucket_name, False)
is_non_empty_string(object_name)
is_non_empty_string(object_source)
headers = {}
# Preserving the user-defined metadata in headers
if metadata:
headers = amzprefix_user_metadata(metadata)
headers["x-amz-metadata-directive"] = "REPLACE"
if conditions:
headers.update(conditions)
# Source argument to copy_object can only be of type SSE-C
if source_sse:
is_valid_sse_c_object(source_sse)
headers.update(source_sse.copy_headers())
# Destination argument to copy_object cannot be of type SSE-C
if sse:
is_valid_sse_object(sse)
headers.update(sse.headers())
headers['X-Amz-Copy-Source'] = quote(object_source)
response = self._url_open('PUT',
bucket_name=bucket_name,
object_name=object_name,
headers=headers)
return parse_copy_object(bucket_name, object_name, response.data)
def put_object(self, bucket_name, object_name, data, length,
content_type='application/octet-stream',
metadata=None, sse=None, progress=None,
part_size=DEFAULT_PART_SIZE):
"""
Add a new object to the cloud storage server.
NOTE: Maximum object size supported by this API is 5TiB.
Examples:
file_stat = os.stat('hello.txt')
with open('hello.txt', 'rb') as data:
minio.put_object('foo', 'bar', data, file_stat.st_size,
'text/plain')
- For length lesser than 5MB put_object automatically
does single Put operation.
- For length larger than 5MB put_object automatically
does resumable multipart operation.
:param bucket_name: Bucket of new object.
:param object_name: Name of new object.
:param data: Contents to upload.
:param length: Total length of object.
:param content_type: mime type of object as a string.
:param metadata: Any additional metadata to be uploaded along
with your PUT request.
:param progress: A progress object
:param part_size: Multipart part size
:return: etag
"""
is_valid_sse_object(sse)
is_valid_bucket_name(bucket_name, False)
is_non_empty_string(object_name)
if progress:
if not isinstance(progress, Thread):
raise TypeError('Progress object should inherit the thread.')
# Set progress bar length and object name before upload
progress.set_meta(total_length=length, object_name=object_name)
if not callable(getattr(data, 'read')):
raise ValueError(
'Invalid input data does not implement'
' a callable read() method')
if length > (part_size * MAX_MULTIPART_COUNT):
raise InvalidArgumentError('Part size * max_parts(10000) is '
' lesser than input length.')
if part_size < MIN_PART_SIZE:
raise InvalidArgumentError('Input part size is smaller '
' than allowed minimum of 5MiB.')
if part_size > MAX_PART_SIZE:
raise InvalidArgumentError('Input part size is bigger '
' than allowed maximum of 5GiB.')
if not metadata:
metadata = {}
metadata = amzprefix_user_metadata(metadata)
metadata['Content-Type'] = content_type or 'application/octet-stream'
if length > part_size:
return self._stream_put_object(bucket_name, object_name,
data, length, metadata=metadata,
sse=sse, progress=progress,
part_size=part_size)
current_data = data.read(length)
if len(current_data) != length:
raise InvalidArgumentError(
'Could not read {} bytes from data to upload'.format(length)
)
return self._do_put_object(bucket_name, object_name,
current_data, len(current_data),
metadata=metadata, sse=sse,
progress=progress)
def list_objects(self, bucket_name, prefix='', recursive=False):
"""
List objects in the given bucket.
Examples:
objects = minio.list_objects('foo')
for current_object in objects:
print(current_object)
# hello
# hello/
# hello/
# world/
objects = minio.list_objects('foo', prefix='hello/')
for current_object in objects:
print(current_object)
# hello/world/
objects = minio.list_objects('foo', recursive=True)
for current_object in objects:
print(current_object)
# hello/world/1
# world/world/2
# ...
objects = minio.list_objects('foo', prefix='hello/',
recursive=True)
for current_object in objects:
print(current_object)
# hello/world/1
# hello/world/2
:param bucket_name: Bucket to list objects from
:param prefix: String specifying objects returned must begin with
:param recursive: If yes, returns all objects for a specified prefix
:return: An iterator of objects in alphabetical order.
"""
is_valid_bucket_name(bucket_name, False)
# If someone explicitly set prefix to None convert it to empty string.
prefix = prefix or ''
method = 'GET'
# Initialize query parameters.
query = {
'prefix': prefix
}