add limit support to mongodb driver

[phenobarbital]

Summary by Sourcery

Add support for limiting result sets in the MongoDB driver and extend release workflows to build and publish macOS wheels.

New Features:

• Allow specifying a limit on documents returned by the MongoDB driver's query method.
• Allow specifying a limit on documents returned by the MongoDB driver's fetch method.

Enhancements:

• Bump library version from 2.13.0 to 2.13.1 to reflect the new MongoDB driver capabilities and packaging updates.

Build:

• Update release workflow to build wheels for macOS on both x86_64 and arm64 architectures and publish them to PyPI.

[sourcery-ai]

Reviewer's Guide

Adds optional limit support to the MongoDB driver query and fetch methods and extends the release workflow to build and publish macOS wheels, along with a patch version bump.

Sequence diagram for MongoDriver.query with optional limit

sequenceDiagram
    participant Client
    participant MongoDriver
    participant Database
    participant Collection
    participant Cursor

    Client->>MongoDriver: query(collection_name, query, args, limit, kwargs)
    MongoDriver->>MongoDriver: _test_connection()
    MongoDriver->>MongoDriver: _select_database()
    MongoDriver->>Database: get database
    Database-->>MongoDriver: db
    MongoDriver->>Database: db[collection_name]
    Database-->>MongoDriver: collection
    MongoDriver->>Collection: find(query or {}, args, kwargs)
    Collection-->>MongoDriver: cursor
    alt limit is provided
        MongoDriver->>Cursor: limit(limit)
        Cursor-->>MongoDriver: cursor
    end
    MongoDriver->>Cursor: to_list(length=None)
    Cursor-->>MongoDriver: documents
    MongoDriver->>MongoDriver: _serializer(documents, None)
    MongoDriver-->>Client: serialized_result

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Sequence diagram for MongoDriver.fetch with optional limit

sequenceDiagram
    participant Client
    participant MongoDriver
    participant Database
    participant Collection
    participant Cursor

    Client->>MongoDriver: fetch(collection_name, query, args, limit, kwargs)
    MongoDriver->>MongoDriver: _test_connection()
    MongoDriver->>MongoDriver: _select_database()
    MongoDriver->>Database: get database
    Database-->>MongoDriver: db
    MongoDriver->>Database: db[collection_name]
    Database-->>MongoDriver: collection
    MongoDriver->>Collection: find(query or {}, args, kwargs)
    Collection-->>MongoDriver: cursor
    alt limit is provided
        MongoDriver->>Cursor: limit(limit)
        Cursor-->>MongoDriver: cursor
    end
    loop iterate cursor
        MongoDriver->>Cursor: get next document
        Cursor-->>MongoDriver: document
        MongoDriver->>MongoDriver: append to result list
    end
    MongoDriver-->>Client: (result, None)

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Class diagram for MongoDB driver limit support

classDiagram
    class MongoDriver {
        +query(collection_name str, query dict, *args, limit int, **kwargs) Iterable
        +fetch(collection_name str, query dict, *args, limit int, **kwargs) Iterable
        _select_database() Database
        _serializer(data Any, schema Any) Any
    }

    class Database {
        +__getitem__(collection_name str) Collection
    }

    class Collection {
        +find(query dict, *args, **kwargs) Cursor
    }

    class Cursor {
        +limit(count int) Cursor
        +to_list(length int) list
        +__aiter__() Cursor
    }

    MongoDriver --> Database : uses
    Database --> Collection : returns
    Collection --> Cursor : returns
    MongoDriver --> Cursor : iterates

    note for MongoDriver "query and fetch now accept optional limit to constrain MongoDB cursor"

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File-Level Changes

Change	Details	Files
Add optional limit parameter to MongoDB driver's query and fetch methods to constrain result set size.	Extend query method signature to accept an optional integer limit parameter Apply limit to the MongoDB cursor when a limit value is provided before materializing results Extend fetch method signature with optional limit and apply it to the cursor iteration path	asyncdb/drivers/mongo.py
Extend CI release workflow to build, detect, and publish macOS wheels alongside existing Linux and Windows artifacts.	Add macOS-latest to the GitHub Actions build matrix Configure cibuildwheel to build macOS wheels for x86_64 and arm64 architectures Detect macOS wheels in the dist directory and set an environment flag Upload macOS wheels to PyPI when present, mirroring existing Linux and Windows upload steps	.github/workflows/release.yml
Bump library patch version to reflect new behavior and packaging support.	Increment asyncdb version from 2.13.0 to 2.13.1	asyncdb/version.py

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[sourcery-ai]

Hey there - I've reviewed your changes - here's some feedback:

• In both query and fetch, the if limit: check will skip a valid limit=0 value; consider using if limit is not None: to distinguish between None and falsy numeric limits.
• The query and fetch methods now duplicate the collection.find(...); cursor = cursor.limit(limit) logic; consider extracting this into a small helper to keep the behavior consistent and reduce repetition.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- In both `query` and `fetch`, the `if limit:` check will skip a valid `limit=0` value; consider using `if limit is not None:` to distinguish between `None` and falsy numeric limits.
- The `query` and `fetch` methods now duplicate the `collection.find(...); cursor = cursor.limit(limit)` logic; consider extracting this into a small helper to keep the behavior consistent and reduce repetition.

## Individual Comments

### Comment 1
<location> `asyncdb/drivers/mongo.py:516-519` </location>
<code_context>
         collection_name: str,
         query: Optional[dict] = None,
         *args,
+        limit: Optional[int] = None,
         **kwargs
     ) -> Iterable[Any]:
</code_context>

<issue_to_address>
**suggestion (bug_risk):** Use an explicit `is not None` check for `limit` to avoid surprising behavior with `0`.

Using `if limit:` will also skip a computed `limit=0` or other falsy values. An explicit `if limit is not None:` makes the behavior unambiguous and prevents silent misconfiguration when `limit` is derived rather than hard-coded.

```suggestion
            cursor = collection.find(query or {}, *args, **kwargs)
            if limit is not None:
                cursor = cursor.limit(limit)
            result = await cursor.to_list(length=None)
```
</issue_to_address>

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