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# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
import time
import uuid
from datetime import datetime, timedelta
from azure.storage.common import (
AccessPolicy,
ResourceTypes,
AccountPermissions,
)
from azure.storage.file import (
FileService,
SharePermissions,
FilePermissions,
)
class FileSasSamples():
def __init__(self, account):
self.account = account
def run_all_samples(self):
self.service = self.account.create_file_service()
self.share_sas()
self.file_sas()
self.account_sas()
self.share_acl()
self.sas_with_signed_identifiers()
def _create_share(self, prefix='share'):
share_name = '{}{}'.format(prefix, str(uuid.uuid4()).replace('-', ''))
self.service.create_share(share_name)
return share_name
def share_sas(self):
share_name = self._create_share()
self.service.create_file_from_text(share_name, None, 'file1', b'hello world')
# Access only to the files in the given share
# Read permissions to access files
# Expires in an hour
token = self.service.generate_share_shared_access_signature(
share_name,
SharePermissions.READ,
datetime.utcnow() + timedelta(hours=1),
)
# Create a service and use the SAS
sas_service = FileService(
account_name=self.account.account_name,
sas_token=token,
)
file = sas_service.get_file_to_text(share_name, None, 'file1')
content = file.content # hello world
self.service.delete_share(share_name)
def file_sas(self):
share_name = self._create_share()
self.service.create_directory(share_name, 'dir1')
self.service.create_file_from_text(share_name, 'dir1', 'file1', b'hello world')
# Read access only to this particular file
# Expires in an hour
token = self.service.generate_file_shared_access_signature(
share_name,
'dir1',
'file1',
FilePermissions.READ,
datetime.utcnow() + timedelta(hours=1),
)
# Create a service and use the SAS
sas_service = FileService(
account_name=self.account.account_name,
sas_token=token,
)
file = sas_service.get_file_to_text(share_name, 'dir1', 'file1')
content = file.content # hello world
self.service.delete_share(share_name)
def account_sas(self):
share_name = self._create_share()
metadata = {'val1': 'foo', 'val2': 'blah'}
self.service.set_share_metadata(share_name, metadata=metadata)
# Access to read operations on the shares themselves
# Expires in an hour
token = self.service.generate_account_shared_access_signature(
ResourceTypes.CONTAINER,
AccountPermissions.READ,
datetime.utcnow() + timedelta(hours=1),
)
# Create a service and use the SAS
sas_service = FileService(
account_name=self.account.account_name,
sas_token=token,
)
metadata = sas_service.get_share_metadata(share_name) # metadata={'val1': 'foo', 'val2': 'blah'}
self.service.delete_share(share_name)
def share_acl(self):
share_name = self._create_share()
# Basic
access_policy = AccessPolicy(permission=SharePermissions.READ,
expiry=datetime.utcnow() + timedelta(hours=1))
identifiers = {'id': access_policy}
self.service.set_share_acl(share_name, identifiers)
# Wait 30 seconds for acl to propagate
time.sleep(30)
acl = self.service.get_share_acl(share_name) # {id: AccessPolicy()}
# Replaces values, does not merge
access_policy = AccessPolicy(permission=SharePermissions.READ,
expiry=datetime.utcnow() + timedelta(hours=1))
identifiers = {'id2': access_policy}
self.service.set_share_acl(share_name, identifiers)
# Wait 30 seconds for acl to propagate
time.sleep(30)
acl = self.service.get_share_acl(share_name) # {id2: AccessPolicy()}
# Clear
self.service.set_share_acl(share_name)
# Wait 30 seconds for acl to propagate
time.sleep(30)
acl = self.service.get_share_acl(share_name) # {}
self.service.delete_share(share_name)
def sas_with_signed_identifiers(self):
share_name = self._create_share()
self.service.create_directory(share_name, 'dir1')
self.service.create_file_from_text(share_name, 'dir1', 'file1', b'hello world')
# Set access policy on share
access_policy = AccessPolicy(permission=SharePermissions.READ,
expiry=datetime.utcnow() + timedelta(hours=1))
identifiers = {'id': access_policy}
acl = self.service.set_share_acl(share_name, identifiers)
# Wait 30 seconds for acl to propagate
time.sleep(30)
# Indicates to use the access policy set on the share
token = self.service.generate_share_shared_access_signature(
share_name,
id='id'
)
# Create a service and use the SAS
sas_service = FileService(
account_name=self.account.account_name,
sas_token=token,
)
file = sas_service.get_file_to_text(share_name, 'dir1', 'file1')
content = file.content # hello world
self.service.delete_share(share_name)
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