[Cosmos] CosmosDB asynchronous client - #21404
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* Removed some stuff * Looking at constructors * Updated request * Added client close * working client creation Co-authored-by: simorenoh <simonmorenohe@gmail.com>
database read works, but ignored exception is returned: Fatal error on SSL transport NoneType has no attribute 'send' (_loop._proactor.send) RuntimeError: Event loop is closed Unclosed connector/ connection
Added methods needed to use async with when initializing client, but logs output "Exception ignored... Runtime Error: Event loop is closed"
Move branch into local fork
missing upsert and other resources
missing read_all_items and both query methods for container class
Complete item CRUD functionality - only missing queries
Query functionality and container query methods
also fixed README and added examples_async
gahl-levy
reviewed
Dec 6, 2021
| url = os.environ['ACCOUNT_URI'] | ||
| key = os.environ['ACCOUNT_KEY'] | ||
| database_name = 'testDatabase' | ||
| container_name = 'products' |
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ditto. I was a bit confused when I saw these being referred in the function below without realizing they are constants.
gahl-levy
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Dec 6, 2021
| 'productName': 'Widget', | ||
| 'productModel': 'Model {0}'.format(i) | ||
| } | ||
| ) |
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Do we need to close the client here too?
await client.close()
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this is that second way to initialize I had mentioned above - the way it is done here, it gets disposed once the with statement gets exited
gahl-levy
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Dec 6, 2021
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| ### Queries with the asynchronous client | ||
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| Queries work the same way for the most part, with one exception being the absence of the `enable_cross_partition` flag in the request; queries without a specified partition key value will now by default atempt to do a cross partition query. Results can be directly iterated on, but because queries made by the asynchronous client return AsyncIterable objects, results can't be cast into lists directly; instead, if you need to create lists from your results, use Python's list comprehension to populate a list: |
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| Queries work the same way for the most part, with one exception being the absence of the `enable_cross_partition` flag in the request; queries without a specified partition key value will now by default atempt to do a cross partition query. Results can be directly iterated on, but because queries made by the asynchronous client return AsyncIterable objects, results can't be cast into lists directly; instead, if you need to create lists from your results, use Python's list comprehension to populate a list: | |
| Queries work the same way for the most part, with one exception being the absence of the `enable_cross_partition` flag in the request; queries without a specified partition key value will now by default attempt to do a cross partition query. Results can be directly iterated on, but because queries made by the asynchronous client return AsyncIterable objects, results can't be cast into lists directly; instead, if you need to create lists from your results, use Python's list comprehension to populate a list: |
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- Is this the reason that we don't have an await when querying? Should we make that more explicit?
- Why do we need the word "async" again in the function
- IIRC point queries operate differently. Should we add an example and explain the differentiation?
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- Yeah this is that point I had brought up with you before, I feel like I tried to explain it but I'm not sure it's completely understandable... let's talk on this to reach a conclusion.
- We need the word async in the function definition not because of the query, but because we do an
async forloop right after - any function that has eitherawaitorasyncwithin has to be defined as async by python - This is the case even for the normal sync client, and I believe should be documented in the actual Cosmos docs (not just SDK), found this for instance: https://devblogs.microsoft.com/cosmosdb/point-reads-versus-queries/
gahl-levy
reviewed
Dec 6, 2021
| from azure.cosmos.aio import CosmosClient | ||
| import os | ||
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| url = os.environ['ACCOUNT_URI'] |
gahl-levy
reviewed
Dec 6, 2021
| container_name = 'products' | ||
| container = database.get_container_client(container_name) | ||
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| async def create_lists(): |
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Do we need to close the client in this example too? I'm not seeing "with" being used either.
gahl-levy
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Dec 6, 2021
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gahl-levy
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Clarifying comments for README Co-authored-by: Gahl Levy <75269480+gahl-levy@users.noreply.github.com>
simorenoh
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Dec 7, 2021
simorenoh
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Dec 7, 2021
tjprescott
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Dec 7, 2021
simorenoh
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Dec 7, 2021
Co-authored-by: Simon Moreno <30335873+simorenoh@users.noreply.github.com>
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* initial commit * Client Constructor (Azure#20310) * Removed some stuff * Looking at constructors * Updated request * Added client close * working client creation Co-authored-by: simorenoh <simonmorenohe@gmail.com> * read database database read works, but ignored exception is returned: Fatal error on SSL transport NoneType has no attribute 'send' (_loop._proactor.send) RuntimeError: Event loop is closed Unclosed connector/ connection * Update simon_testfile.py * with coroutine Added methods needed to use async with when initializing client, but logs output "Exception ignored... Runtime Error: Event loop is closed" * Update simon_testfile.py * small changes * async with returns no exceptions * async read container * async item read * cleaning up * create item/ database methods * item delete working * docs replace functionality missing upsert and other resources * upsert functionality missing read_all_items and both query methods for container class * missing query methods * CRUD for udf, sproc, triggers * initial query logic + container methods * missing some execution logic and tests * oops * fully working queries * small fix to query_items() also fixed README and added examples_async * Update _cosmos_client_connection_async.py * Update _cosmos_client_connection.py * documentation update * updated MIT dates and get_user_client() description * Update CHANGELOG.md * Delete simon_testfile.py * leftover retry utility * Update README.md * docs and removed six package * changes based on comments still missing discussion resolution on SSL verification and tests for async functionality under test module (apart from samples which are basically end to end tests) * small change in type hints * updated readme * fixes based on conversations * added missing type comments * update changelog for ci pipeline * added typehints, moved params into keywords, added decorators, made _connection_policy private * changes based on sync with central sdk * remove is_system_key from scripts (only used in execute_sproc) is_system_key verifies that an empty partition key is properly dealt with if ['partitionKey']['systemKey'] exists in the container options - however, we do not allow containers to be created with empty partition key values in the python sdk, so the functionality is needless * Revert "remove is_system_key from scripts (only used in execute_sproc)" Reverting last commit, will find way to init is_system_key for now * async script proxy using composition * pylint * capitalized constants * Apply suggestions from code review Clarifying comments for README Co-authored-by: Gahl Levy <75269480+gahl-levy@users.noreply.github.com> * closing python code snippet * last doc updates * Update sdk/cosmos/azure-cosmos/CHANGELOG.md Co-authored-by: Simon Moreno <30335873+simorenoh@users.noreply.github.com> Co-authored-by: annatisch <antisch@microsoft.com> Co-authored-by: Gahl Levy <75269480+gahl-levy@users.noreply.github.com> Co-authored-by: Travis Prescott <tjprescott@users.noreply.github.com>
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This PR contains the changes for the working language-native asynchronous client for cosmosdb. The async samples that were added showcase how the different functions can be used with async/await, and serve to show end to end functionality of each resource.
Any and all feedback is appreciated!