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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.queue import (
QueueService,
QueuePermissions,
)
class QueueSasSamples():
def __init__(self, account):
self.account = account
def run_all_samples(self):
self.service = self.account.create_queue_service()
self.queue_sas()
self.account_sas()
self.queue_acl()
self.sas_with_signed_identifiers()
def _create_queue(self, prefix='queue'):
queue_name = '{}{}'.format(prefix, str(uuid.uuid4()).replace('-', ''))
self.service.create_queue(queue_name)
return queue_name
def queue_sas(self):
queue_name = self._create_queue()
self.service.put_message(queue_name, u'message1')
# Access only to the messages in the given queue
# Process permissions to access messages
# Expires in an hour
token = self.service.generate_queue_shared_access_signature(
queue_name,
QueuePermissions.PROCESS,
datetime.utcnow() + timedelta(hours=1),
)
# Create a service and use the SAS
sas_service = QueueService(
account_name=self.account.account_name,
sas_token=token,
)
messages = sas_service.get_messages(queue_name)
for message in messages:
print(message.content) # message1
self.service.delete_queue(queue_name)
def account_sas(self):
queue_name = self._create_queue()
metadata = {'val1': 'foo', 'val2': 'blah'}
self.service.set_queue_metadata(queue_name, metadata=metadata)
# Access to read operations on the queues 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 = QueueService(
account_name=self.account.account_name,
sas_token=token,
)
metadata = sas_service.get_queue_metadata(queue_name) # metadata={'val1': 'foo', 'val2': 'blah'}
self.service.delete_queue(queue_name)
def queue_acl(self):
queue_name = self._create_queue()
# Create a READ level access policy and set it on the queue
access_policy = AccessPolicy(permission=QueuePermissions.READ,
expiry=datetime.utcnow() + timedelta(hours=1))
identifiers = {'id': access_policy}
self.service.set_queue_acl(queue_name, identifiers)
# Wait 30 seconds for acl to propagate
time.sleep(30)
acl = self.service.get_queue_acl(queue_name) # {id: AccessPolicy()}
# Replaces values, does not merge
access_policy = AccessPolicy(permission=QueuePermissions.READ,
expiry=datetime.utcnow() + timedelta(hours=1))
identifiers = {'id2': access_policy}
self.service.set_queue_acl(queue_name, identifiers)
# Wait 30 seconds for acl to propagate
time.sleep(30)
acl = self.service.get_queue_acl(queue_name) # {id2: AccessPolicy()}
# Clear
self.service.set_queue_acl(queue_name)
# Wait 30 seconds for acl to propagate
time.sleep(30)
acl = self.service.get_queue_acl(queue_name) # {}
self.service.delete_queue(queue_name)
def sas_with_signed_identifiers(self):
queue_name = self._create_queue()
self.service.put_message(queue_name, u'message1')
# Set access policy on queue
access_policy = AccessPolicy(permission=QueuePermissions.PROCESS,
expiry=datetime.utcnow() + timedelta(hours=1))
identifiers = {'id': access_policy}
acl = self.service.set_queue_acl(queue_name, identifiers)
# Wait 30 seconds for acl to propagate
time.sleep(30)
# Indicates to use the access policy set on the queue
token = self.service.generate_queue_shared_access_signature(
queue_name,
id='id'
)
# Create a service and use the SAS
sas_service = QueueService(
account_name=self.account.account_name,
sas_token=token,
)
messages = sas_service.get_messages(queue_name)
for message in messages:
print(message.content) # message1
self.service.delete_queue(queue_name)
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