Support for maintenance push notifications handling during server upgrade or maintenance procedures.

[petyaslavova]

Pull Request check-list

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• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
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Description of change

Please provide a description of the change here.

[Copilot]

Pull Request Overview

This PR adds support for maintenance push notifications handling during server upgrade or maintenance procedures. It introduces a comprehensive maintenance events system that allows Redis clients to gracefully handle node movements, migrations, and failovers in Redis clusters by adjusting connection timeouts and implementing proactive reconnection strategies.

Key changes include:

• Addition of new maintenance event classes and configuration system
• Integration of maintenance event handlers into connection pools and clients
• Support for RESP3 push notifications for maintenance events
• Enhanced connection pool management with maintenance-aware operations

Reviewed Changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
redis/maintenance_events.py	Core maintenance events system with event classes, configuration, and handlers
redis/connection.py	Enhanced connection interface and pool management with maintenance event support
redis/client.py	Client-level integration of maintenance events configuration
redis/_parsers/base.py	Push notification parsing for maintenance events
redis/_parsers/resp3.py	RESP3 parser updates for maintenance notifications
redis/_parsers/hiredis.py	Hiredis parser updates for push notification handling
tests/test_maintenance_events.py	Comprehensive test suite for maintenance events functionality
tests/test_connection_pool.py	Minor test updates for connection pool changes

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[Copilot]

[nitpick] The type annotation allows both Iterable[Type[Exception]] and object, which is too permissive. Consider using a more specific union type or creating a dedicated type alias to make the API clearer for consumers.

Suggested change

	retry_on_error: Union[Iterable[Type[Exception]], object] = SENTINEL,
	retry_on_error: Union[Iterable[Type[Exception]], type(SENTINEL)] = SENTINEL,

[Copilot]

The type annotation uses Callable without specifying the signature, making it unclear what parameters the parser functions should accept. Consider using Callable[[List[Any]], MaintenanceEvent] or a Protocol for better type safety.