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# coding: utf-8
# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
"""
FILE: blob_samples_container_async.py
DESCRIPTION:
This sample demonstrates common container operations including list blobs, create a container,
set metadata etc.
USAGE:
python blob_samples_container_async.py
Set the environment variables with your own values before running the sample:
1) STORAGE_CONNECTION_STRING - the connection string to your storage account
"""
import os
import sys
import asyncio
from datetime import datetime, timedelta
current_dir = os.path.dirname(os.path.abspath(__file__))
SOURCE_FILE = os.path.join(current_dir, 'SampleSource.txt')
class ContainerSamplesAsync(object):
connection_string = os.getenv("STORAGE_CONNECTION_STRING")
# --Begin Blob Samples-----------------------------------------------------------------
async def container_sample_async(self):
if self.connection_string is None:
print("Missing required environment variable: STORAGE_CONNECTION_STRING." + '\n' +
"Test: container_sample_async")
sys.exit(1)
# [START create_container_client_from_service]
# Instantiate a BlobServiceClient using a connection string
from azure.storage.blob.aio import BlobServiceClient
blob_service_client = BlobServiceClient.from_connection_string(self.connection_string)
# Instantiate a ContainerClient
container_client = blob_service_client.get_container_client("mynewcontainerasync")
# [END create_container_client_from_service]
async with blob_service_client:
# [START create_container_client_sasurl]
from azure.storage.blob.aio import ContainerClient
sas_url = sas_url = "https://account.blob.core.windows.net/mycontainer?sv=2015-04-05&st=2015-04-29T22%3A18%3A26Z&se=2015-04-30T02%3A23%3A26Z&sr=b&sp=rw&sip=168.1.5.60-168.1.5.70&spr=https&sig=Z%2FRHIX5Xcg0Mq2rqI3OlWTjEg2tYkboXr1P9ZUXDtkk%3D"
container = ContainerClient.from_container_url(sas_url)
# [END create_container_client_sasurl]
try:
# [START create_container]
await container_client.create_container()
# [END create_container]
# [START get_container_properties]
properties = await container_client.get_container_properties()
# [END get_container_properties]
finally:
# [START delete_container]
await container_client.delete_container()
# [END delete_container]
async def acquire_lease_on_container_async(self):
if self.connection_string is None:
print("Missing required environment variable: STORAGE_CONNECTION_STRING." + '\n' +
"Test: acquire_lease_on_container_async")
sys.exit(1)
# Instantiate a BlobServiceClient using a connection string
from azure.storage.blob.aio import BlobServiceClient
blob_service_client = BlobServiceClient.from_connection_string(self.connection_string)
async with blob_service_client:
# Instantiate a ContainerClient
container_client = blob_service_client.get_container_client("myleasecontainerasync")
# Create new Container
await container_client.create_container()
# [START acquire_lease_on_container]
# Acquire a lease on the container
lease = await container_client.acquire_lease()
# Delete container by passing in the lease
await container_client.delete_container(lease=lease)
# [END acquire_lease_on_container]
async def set_metadata_on_container_async(self):
if self.connection_string is None:
print("Missing required environment variable: STORAGE_CONNECTION_STRING." + '\n' +
"Test: set_metadata_on_container_async")
sys.exit(1)
# Instantiate a BlobServiceClient using a connection string
from azure.storage.blob.aio import BlobServiceClient
blob_service_client = BlobServiceClient.from_connection_string(self.connection_string)
async with blob_service_client:
# Instantiate a ContainerClient
container_client = blob_service_client.get_container_client("mymetadatacontainerasync")
try:
# Create new Container
await container_client.create_container()
# [START set_container_metadata]
# Create key, value pairs for metadata
metadata = {'type': 'test'}
# Set metadata on the container
await container_client.set_container_metadata(metadata=metadata)
# [END set_container_metadata]
# Get container properties
properties = (await container_client.get_container_properties()).metadata
finally:
# Delete container
await container_client.delete_container()
async def container_access_policy_async(self):
if self.connection_string is None:
print("Missing required environment variable: STORAGE_CONNECTION_STRING." + '\n' +
"Test: container_access_policy_async")
sys.exit(1)
# Instantiate a BlobServiceClient using a connection string
from azure.storage.blob.aio import BlobServiceClient
blob_service_client = BlobServiceClient.from_connection_string(self.connection_string)
async with blob_service_client:
# Instantiate a ContainerClient
container_client = blob_service_client.get_container_client("myaccesscontainerasync")
if container_client.account_name is None:
print("Connection string did not provide an account name." + '\n' +
"Test: container_access_policy_async")
sys.exit(1)
try:
# Create new Container
await container_client.create_container()
# [START set_container_access_policy]
# Create access policy
from azure.storage.blob import AccessPolicy, ContainerSasPermissions
access_policy = AccessPolicy(permission=ContainerSasPermissions(read=True),
expiry=datetime.utcnow() + timedelta(hours=1),
start=datetime.utcnow() - timedelta(minutes=1))
identifiers = {'my-access-policy-id': access_policy}
# Set the access policy on the container
await container_client.set_container_access_policy(signed_identifiers=identifiers)
# [END set_container_access_policy]
# [START get_container_access_policy]
policy = await container_client.get_container_access_policy()
# [END get_container_access_policy]
# [START generate_sas_token]
# Use access policy to generate a sas token
from azure.storage.blob import generate_container_sas
sas_token = generate_container_sas(
container_client.account_name,
container_client.container_name,
account_key=container_client.credential.account_key,
policy_id='my-access-policy-id'
)
# [END generate_sas_token]
# Use the sas token to authenticate a new client
# [START create_container_client_sastoken]
from azure.storage.blob.aio import ContainerClient
container = ContainerClient.from_container_url(
container_url="https://account.blob.core.windows.net/mycontainerasync",
credential=sas_token,
)
# [END create_container_client_sastoken]
finally:
# Delete container
await container_client.delete_container()
async def list_blobs_in_container_async(self):
if self.connection_string is None:
print("Missing required environment variable: STORAGE_CONNECTION_STRING." + '\n' +
"Test: list_blobs_in_container_async")
sys.exit(1)
# Instantiate a BlobServiceClient using a connection string
from azure.storage.blob.aio import BlobServiceClient
blob_service_client = BlobServiceClient.from_connection_string(self.connection_string)
async with blob_service_client:
# Instantiate a ContainerClient
container_client = blob_service_client.get_container_client("myblobscontainerasync")
# Create new Container
await container_client.create_container()
# [START upload_blob_to_container]
with open(SOURCE_FILE, "rb") as data:
blob_client = await container_client.upload_blob(name="myblob", data=data)
properties = await blob_client.get_blob_properties()
# [END upload_blob_to_container]
# [START list_blobs_in_container]
blobs_list = []
async for blob in container_client.list_blobs():
blobs_list.append(blob)
# [END list_blobs_in_container]
# Delete container
await container_client.delete_container()
async def get_blob_client_from_container_async(self):
if self.connection_string is None:
print("Missing required environment variable: STORAGE_CONNECTION_STRING." + '\n' +
"Test: get_blob_client_from_container_async")
sys.exit(1)
# Instantiate a BlobServiceClient using a connection string
from azure.storage.blob.aio import BlobServiceClient
blob_service_client = BlobServiceClient.from_connection_string(self.connection_string)
async with blob_service_client:
# Instantiate a ContainerClient
container_client = blob_service_client.get_container_client("blobcontainerasync")
# Create new Container
await container_client.create_container()
# [START get_blob_client]
# Get the BlobClient from the ContainerClient to interact with a specific blob
blob_client = container_client.get_blob_client("mynewblob")
# [END get_blob_client]
# Delete container
await container_client.delete_container()
async def get_container_client_from_blob_client_async(self):
if self.connection_string is None:
print("Missing required environment variable: STORAGE_CONNECTION_STRING." + '\n' +
"Test: get_container_client_from_blob_client_async")
sys.exit(1)
# Instantiate a BlobServiceClient using a connection string
from azure.storage.blob.aio import BlobServiceClient
blob_service_client = BlobServiceClient.from_connection_string(self.connection_string)
async with blob_service_client:
# [START get_container_client_from_blob_client]
container_client1 = blob_service_client.get_container_client("blobcontainer1async")
await container_client1.create_container()
print(await container_client1.get_container_properties())
blob_client1 = container_client1.get_blob_client("blob1")
await blob_client1.upload_blob("hello")
container_client2 = blob_client1._get_container_client()
print(await container_client2.get_container_properties())
await container_client2.delete_container()
# [END get_container_client_from_blob_client]
async def main():
sample = ContainerSamplesAsync()
await sample.container_sample_async()
await sample.acquire_lease_on_container_async()
await sample.set_metadata_on_container_async()
await sample.container_access_policy_async()
await sample.list_blobs_in_container_async()
await sample.get_blob_client_from_container_async()
await sample.get_container_client_from_blob_client_async()
if __name__ == '__main__':
asyncio.run(main())
|
