feat(langgraph-checkpoint-aws): add Valkey checkpoint saver for AgentCore #738
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seaofawareness
changed the title
Updated AgentCore Valkey saver and helpers to use langgraph-checkpoint 3.0 API. Changes: - Removed jsonplus_serde field (no longer needed in 3.0) - Updated pyproject.toml to require langgraph-checkpoint>=3.0.0 - Removed JsonPlusSerializer imports (use SerializerProtocol instead) - Updated tests to match new API
…d of Protocol Cannot instantiate Protocol classes directly. Use concrete JsonPlusSerializer implementation for default serializer in AgentCoreEventClient. Fixes: 'Cannot instantiate protocol class SerializerProtocol' mypy error
- Add proper try/except for Valkey imports in integration tests - Fix line length issue (E501) in unit tests by splitting long comment - Ensure tests skip gracefully when valkey package is not installed
michaelnchin
requested changes
Nov 4, 2025
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@seaofawareness looks good overall, one comment regarding the sample notebook.
michaelnchin
approved these changes
Nov 4, 2025
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LGTM - thanks for all of your work on the Valkey integrations @seaofawareness !
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This PR provides AgentCore-compatible checkpoint savers that use Valkey as the storage backend, combining AgentCore session management concepts with Valkey's storage and search capabilities.