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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.
# -------------------------------------------------------------------------
from azure.cosmos.aio import CosmosClient
import azure.cosmos.exceptions as exceptions
from azure.cosmos.partition_key import PartitionKey
import uuid
import asyncio
import config
# ----------------------------------------------------------------------------------------------------------
# Prerequisites -
#
# 1. An Azure Cosmos account -
# https://azure.microsoft.com/documentation/articles/documentdb-create-account/
#
# 2. Microsoft Azure Cosmos PyPi package -
# https://pypi.python.org/pypi/azure-cosmos/
# ----------------------------------------------------------------------------------------------------------
# Sample - demonstrates the basic throughput bucket operations at the client, database, container and item levels.
#
# 1. Setting throughput buckets at the Client Level
#
# 2. Setting Throughput Buckets at the Item Level
# 2.1 - Read Item
# 2.2 - Create Item
#
# 3. Multi-Bucket Usage
# 3.1 - Create and Delete Item with Separate Buckets
# 3.2 - Create Client and Create Item with Separate Buckets
# 3.3 - Create, Upsert, and Delete Item with Separate Buckets
# ----------------------------------------------------------------------------------------------------------
# Note -
#
# Running this sample will create (and delete) multiple Databases and Containers on your account.
# Each time a Container is created the account will be billed for 1 hour of usage based on
# the provisioned throughput (RU/s) of that account.
# ----------------------------------------------------------------------------------------------------------
HOST = config.settings['host']
MASTER_KEY = config.settings['master_key']
DATABASE_ID = config.settings['database_id']
CONTAINER_ID = config.settings['container_id']
# Applies throughput bucket 1 to all requests from a client application
async def create_client_with_throughput_bucket(host=HOST, master_key=MASTER_KEY):
async with CosmosClient(host, master_key, throughput_bucket=1) as client:
pass
# Applies throughput bucket 2 for read item requests
async def container_read_item_throughput_bucket(client):
database = client.get_database_client(DATABASE_ID)
created_container = await database.create_container(
str(uuid.uuid4()),
PartitionKey(path="/pk"))
created_document = await created_container.create_item(body={'id': '1' + str(uuid.uuid4()), 'pk': 'mypk'})
await created_container.read_item(
item=created_document['id'],
partition_key="mypk",
throughput_bucket=2)
await database.delete_container(created_container.id)
# Applies throughput bucket 3 for create item requests
async def container_create_item_throughput_bucket(client):
database = client.get_database_client(DATABASE_ID)
created_container = await database.create_container(
str(uuid.uuid4()),
PartitionKey(path="/pk"))
await created_container.create_item(
body={'id': '1' + str(uuid.uuid4()), 'pk': 'mypk'},
throughput_bucket=3)
await database.delete_container(created_container.id)
# Applies throughput bucket 3 for create item requests and bucket 4 for delete item requests
async def container_create_and_delete_item_throughput_bucket(client):
database = client.get_database_client(DATABASE_ID)
created_container = await database.create_container(
str(uuid.uuid4()),
PartitionKey(path="/pk"))
created_item = await created_container.create_item(
body={'id': '1' + str(uuid.uuid4()), 'pk': 'mypk'},
throughput_bucket=3)
await created_container.delete_item(
created_item['id'],
partition_key='mypk',
throughput_bucket=4)
await database.delete_container(created_container.id)
# Applies throughput bucket 1 to all requests from a client application, and bucket 2 to create item requests
async def create_client_and_item_with_throughput_bucket(host=HOST, master_key=MASTER_KEY):
async with CosmosClient(host, master_key,
throughput_bucket=1) as client:
database = client.get_database_client(DATABASE_ID)
created_container = await database.create_container(
str(uuid.uuid4()),
PartitionKey(path="/pk"))
await created_container.create_item(
body={'id': '1' + str(uuid.uuid4()), 'pk': 'mypk'},
throughput_bucket=2)
await database.delete_container(created_container.id)
# Applies throughput bucket 3 for create item requests, bucket 4 for upsert item requests, and bucket 5 for delete item
async def container_create_upsert_and_delete_item_throughput_bucket(client):
database = client.get_database_client(DATABASE_ID)
created_container = await database.create_container(
str(uuid.uuid4()),
PartitionKey(path="/pk"))
created_item = await created_container.create_item(
body={'id': '1' + str(uuid.uuid4()), 'pk': 'mypk'},
throughput_bucket=3)
# add items for partition key 1
for i in range(1, 3):
await created_container.upsert_item(
dict(id="item{}".format(i), pk='mypk', throughput_bucket=4))
await created_container.delete_item(
created_item['id'],
partition_key='mypk',
throughput_bucket=5)
database.delete_container(created_container.id)
async def run_sample():
async with CosmosClient(HOST, {'masterKey': MASTER_KEY} ) as client:
await client.create_database_if_not_exists(id=DATABASE_ID)
try:
# creates client
await create_client_with_throughput_bucket()
# reads an item from a container
await container_read_item_throughput_bucket(client)
# writes an item to a container
await container_create_item_throughput_bucket(client)
# creates and deletes an item to a container
await container_create_and_delete_item_throughput_bucket(client)
# creates a client and item with separate throughput buckets
await create_client_and_item_with_throughput_bucket()
# creates an item, upserts multiple items, and deletes an item all on separate throughput buckets
await container_create_upsert_and_delete_item_throughput_bucket(client)
except exceptions.CosmosHttpResponseError as e:
print('\nrun_sample has caught an error. {0}'.format(e.message))
finally:
print("\nrun_sample done")
if __name__ == '__main__':
asyncio.run(run_sample())
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