
Andrew Rouse developed and maintained core API and backend features for the OpenLiberty/open-liberty repository, focusing on OpenAPI, CDI, and MCP protocol integration. He engineered robust configuration providers, enhanced test automation, and improved cross-version compatibility, using Java, Gradle, and JavaScript. His work included upgrading OpenAPI UI components, refining test infrastructure for stability across platforms, and implementing protocol-level enhancements for tool integration and observability. By addressing complex validation, dependency management, and error handling challenges, Andrew delivered maintainable, well-tested solutions that reduced production risk and improved developer experience. His contributions demonstrated technical depth and a strong commitment to code quality.

September 2025 monthly summary for OpenLiberty/open-liberty focused on MCP enhancements, compatibility, and reliability improvements. The month delivered feature-level changes, centralized argument handling, and extensive test/tooling improvements, with a strong emphasis on business value, stability, and maintainability across EE versions.
September 2025 monthly summary for OpenLiberty/open-liberty focused on MCP enhancements, compatibility, and reliability improvements. The month delivered feature-level changes, centralized argument handling, and extensive test/tooling improvements, with a strong emphasis on business value, stability, and maintainability across EE versions.
August 2025 Monthly Summary for OpenLiberty/open-liberty: Focused on enhancing tool integration capabilities, stabilizing tool-related workflows, and upgrading dependencies to improve stability and performance. Delivered concrete API and UI improvements, fixed debug and import issues, and reinforced error reporting for tool calls to support reliable tool-driven automation.
August 2025 Monthly Summary for OpenLiberty/open-liberty: Focused on enhancing tool integration capabilities, stabilizing tool-related workflows, and upgrading dependencies to improve stability and performance. Delivered concrete API and UI improvements, fixed debug and import issues, and reinforced error reporting for tool calls to support reliable tool-driven automation.
July 2025 monthly summary for OpenLiberty/open-liberty: Delivered core features that improve deployment reliability, protocol readiness, and test stability. The OpenAPI proxy updates ensure accurate server URL generation behind proxies, with added tests to validate proxy configurations. A foundation for MCP is established with a Prototype and Testing Framework, including an MCP FAT project and initialization handshake support. Test infrastructure was hardened to reduce flaky tests and improve dependency compatibility, notably by increasing CircuitBreaker reopen delays and updating MP Config 3.1 TCK dependencies. These efforts deliver tangible business value through reduced production misconfigurations, clearer integration paths for MCP features, and more robust, maintainable test suites. Technologies/skills demonstrated include OpenAPI proxy handling, MCP protocol design and FAT testing, CircuitBreaker stability tuning, Arquillian/slf4j dependency updates, and overall test automation improvements.
July 2025 monthly summary for OpenLiberty/open-liberty: Delivered core features that improve deployment reliability, protocol readiness, and test stability. The OpenAPI proxy updates ensure accurate server URL generation behind proxies, with added tests to validate proxy configurations. A foundation for MCP is established with a Prototype and Testing Framework, including an MCP FAT project and initialization handshake support. Test infrastructure was hardened to reduce flaky tests and improve dependency compatibility, notably by increasing CircuitBreaker reopen delays and updating MP Config 3.1 TCK dependencies. These efforts deliver tangible business value through reduced production misconfigurations, clearer integration paths for MCP features, and more robust, maintainable test suites. Technologies/skills demonstrated include OpenAPI proxy handling, MCP protocol design and FAT testing, CircuitBreaker stability tuning, Arquillian/slf4j dependency updates, and overall test automation improvements.
June 2025: OpenLiberty/open-liberty delivered OpenAPI 4.1 compatibility improvements and UI/dep upgrades with a focus on stability and business value. Implemented a new OpenAPI 4.1 configuration provider and enabled mpOpenAPI-4.1 in tests, upgraded UI and library dependencies to 4.1-compatible versions, and tightened test stability to reduce flaky runs.
June 2025: OpenLiberty/open-liberty delivered OpenAPI 4.1 compatibility improvements and UI/dep upgrades with a focus on stability and business value. Implemented a new OpenAPI 4.1 configuration provider and enabled mpOpenAPI-4.1 in tests, upgraded UI and library dependencies to 4.1-compatible versions, and tightened test stability to reduce flaky runs.
May 2025 monthly summary for OpenLiberty/open-liberty: Delivered a robust OpenAPI testing suite and major resilience test improvements, with a focus on business value and stability. Key outcomes include a comprehensive OpenAPI test suite (pre-generated certificates, single-server validation, and caching tests; NLS cache messages; 4.1 UI integration with config validation; repeated UI tests for OpenAPI 3.1) and a Swagger UI upgrade to support OpenAPI 3.1/4.1 flows. Added EJB resilience tests (CircuitBreaker and Bulkhead) with Bulkhead re-enabled to restore coverage. Improved test quality and maintainability via consolidating common test code, adding ExecutionAssert comments, removing warnings, and extending FT/EJB timeouts for stability. Upgraded Swagger/OpenAPI UI to 5.22.0 with header enhancements and related script updates. Documented why the EJB + FT async test is disabled to ensure clarity for future work and to reduce flaky runs.
May 2025 monthly summary for OpenLiberty/open-liberty: Delivered a robust OpenAPI testing suite and major resilience test improvements, with a focus on business value and stability. Key outcomes include a comprehensive OpenAPI test suite (pre-generated certificates, single-server validation, and caching tests; NLS cache messages; 4.1 UI integration with config validation; repeated UI tests for OpenAPI 3.1) and a Swagger UI upgrade to support OpenAPI 3.1/4.1 flows. Added EJB resilience tests (CircuitBreaker and Bulkhead) with Bulkhead re-enabled to restore coverage. Improved test quality and maintainability via consolidating common test code, adding ExecutionAssert comments, removing warnings, and extending FT/EJB timeouts for stability. Upgraded Swagger/OpenAPI UI to 5.22.0 with header enhancements and related script updates. Documented why the EJB + FT async test is disabled to ensure clarity for future work and to reduce flaky runs.
April 2025 — Focused on MP OpenAPI 4.1 readiness and stable end-to-end testing. Delivered migration and testing work for MP OpenAPI 4.1, advanced Reactive Messaging FAT with Kafka client integration, and added MP Config visibility tests. Upgraded key dependencies, cleaned test suites, and corrected documentation artifacts to accelerate future releases and customer migration paths.
April 2025 — Focused on MP OpenAPI 4.1 readiness and stable end-to-end testing. Delivered migration and testing work for MP OpenAPI 4.1, advanced Reactive Messaging FAT with Kafka client integration, and added MP Config visibility tests. Upgraded key dependencies, cleaned test suites, and corrected documentation artifacts to accelerate future releases and customer migration paths.
March 2025 monthly summary: Focused CDI integration testing across two repositories to boost reliability and regression safety for CDI features. Key work included expanding tests for CDI Invoker exceptions and ELAwareBeanManager in OpenLiberty/open-liberty, and adding ELAwareBeanManager integration test coverage in jakartaee/platform-tck. These changes tighten end-to-end CDI validation and reduce flaky failures in CI, enabling safer deployments of CDI-based functionality.
March 2025 monthly summary: Focused CDI integration testing across two repositories to boost reliability and regression safety for CDI features. Key work included expanding tests for CDI Invoker exceptions and ELAwareBeanManager in OpenLiberty/open-liberty, and adding ELAwareBeanManager integration test coverage in jakartaee/platform-tck. These changes tighten end-to-end CDI validation and reduce flaky failures in CI, enabling safer deployments of CDI-based functionality.
February 2025 highlights for OpenLiberty/open-liberty: Strengthened CDI testing infrastructure, stabilized CDI runtime with Weld upgrades, refreshed the OpenAPI docs UI, and hardened Windows test reliability.
February 2025 highlights for OpenLiberty/open-liberty: Strengthened CDI testing infrastructure, stabilized CDI runtime with Weld upgrades, refreshed the OpenAPI docs UI, and hardened Windows test reliability.
OpenLiberty monthly summary for 2025-01 focusing on key accomplishments and business value. Delivered OpenAPI compatibility improvements and strengthened TCK/test infrastructure with cross-platform support and cleaner build processes. These efforts reduced validation errors, improved cross-environment test reliability (including z/OS), and accelerated feedback for releases.
OpenLiberty monthly summary for 2025-01 focusing on key accomplishments and business value. Delivered OpenAPI compatibility improvements and strengthened TCK/test infrastructure with cross-platform support and cleaner build processes. These efforts reduced validation errors, improved cross-environment test reliability (including z/OS), and accelerated feedback for releases.
December 2024 Monthly Summary – OpenLiberty/open-liberty Key features delivered: - OpenAPI Configuration Improvements: Optimized passing of configuration to matches calls for consistency and efficiency; removed DefaultInclusion enum; added std methods to MpConfigServerConfigObject. Commits: 6c4201a11c5b11783824dfe9fc0f3ed5e2c0eb1e, e59df91f93fe152806ca5d4eb1f587fbb45e1e98, 00fc02abcccd6f793607500c147995199877ec81. - OpenAPI 3.0/3.1 Compatibility Warnings: Implemented user-facing warnings when 3.0 is configured but 3.1-only annotation parameters are used; accompanying tests added. Commits: d3afb568f3a5a71ca42215c9e26d9345ed69ee09, bb6bb814406dddc99240007953c6856fe936e971. - CDI 4.1 Integration, Tests, and Abstract Decorators: Established CDI 4.1 integration test project and added tests for abstract decorators to validate CDI changes; core CDI TCK run. Commits: 088c7e2262e111accad105a6ebc2e1d3816093e5, 6ce58735d2818a0a3c59fa0924def6e6035e57e2, b00e50574b1f1e30692984b77290ee24cbb210be. Major bugs fixed: - MpConfigServerConfigObject Equality Bug Fix: Corrected equality comparison to properly reference the excludedApps field and ensure correct state in comparisons. Commit: c772841407dc7031feef5c17991993ba525b5f0b. - CDI 4.1 Abstract Decorator Access Fix: Fixed access to reflection utilities for generated code in CDI 4.1 abstract decorator scenario. Commit: 4cd28488b3eb3332b47beff30a5b6722bbf1e129. Overall impact and accomplishments: - Improved API configuration reliability and performance, reducing unnecessary re-fetches and enabling more consistent behavior of OpenAPI-related configurations. This reduces runtime errors and simplifies maintenance for users configuring OpenAPI across versions. - Enhanced developer experience with proactive OpenAPI version compatibility warnings and robust tests, reducing misconfigurations and increasing confidence during upgrades. - Strengthened CDI 4.1 integration with dedicated tests and framework alignment (core TCK run), ensuring compatibility with CDI changes and decorator patterns, while addressing decorator reflection edge cases. Technologies and skills demonstrated: - Java CDI 4.1 and reflection utilities, OpenAPI configuration strategies, test-driven development, and cross-version compatibility testing. - Commitment to code quality: added tests, fixed edge-case bugs, and clarified behavior across API configurations. Business value: - Reduced time-to-production risk for API configuration changes, improved stability for users migrating to CDI 4.1 and OpenAPI 3.1+ annotations, and provided clearer guidance through compatibility warnings.
December 2024 Monthly Summary – OpenLiberty/open-liberty Key features delivered: - OpenAPI Configuration Improvements: Optimized passing of configuration to matches calls for consistency and efficiency; removed DefaultInclusion enum; added std methods to MpConfigServerConfigObject. Commits: 6c4201a11c5b11783824dfe9fc0f3ed5e2c0eb1e, e59df91f93fe152806ca5d4eb1f587fbb45e1e98, 00fc02abcccd6f793607500c147995199877ec81. - OpenAPI 3.0/3.1 Compatibility Warnings: Implemented user-facing warnings when 3.0 is configured but 3.1-only annotation parameters are used; accompanying tests added. Commits: d3afb568f3a5a71ca42215c9e26d9345ed69ee09, bb6bb814406dddc99240007953c6856fe936e971. - CDI 4.1 Integration, Tests, and Abstract Decorators: Established CDI 4.1 integration test project and added tests for abstract decorators to validate CDI changes; core CDI TCK run. Commits: 088c7e2262e111accad105a6ebc2e1d3816093e5, 6ce58735d2818a0a3c59fa0924def6e6035e57e2, b00e50574b1f1e30692984b77290ee24cbb210be. Major bugs fixed: - MpConfigServerConfigObject Equality Bug Fix: Corrected equality comparison to properly reference the excludedApps field and ensure correct state in comparisons. Commit: c772841407dc7031feef5c17991993ba525b5f0b. - CDI 4.1 Abstract Decorator Access Fix: Fixed access to reflection utilities for generated code in CDI 4.1 abstract decorator scenario. Commit: 4cd28488b3eb3332b47beff30a5b6722bbf1e129. Overall impact and accomplishments: - Improved API configuration reliability and performance, reducing unnecessary re-fetches and enabling more consistent behavior of OpenAPI-related configurations. This reduces runtime errors and simplifies maintenance for users configuring OpenAPI across versions. - Enhanced developer experience with proactive OpenAPI version compatibility warnings and robust tests, reducing misconfigurations and increasing confidence during upgrades. - Strengthened CDI 4.1 integration with dedicated tests and framework alignment (core TCK run), ensuring compatibility with CDI changes and decorator patterns, while addressing decorator reflection edge cases. Technologies and skills demonstrated: - Java CDI 4.1 and reflection utilities, OpenAPI configuration strategies, test-driven development, and cross-version compatibility testing. - Commitment to code quality: added tests, fixed edge-case bugs, and clarified behavior across API configurations. Business value: - Reduced time-to-production risk for API configuration changes, improved stability for users migrating to CDI 4.1 and OpenAPI 3.1+ annotations, and provided clearer guidance through compatibility warnings.
November 2024 monthly summary for OpenLiberty/open-liberty focusing on OpenAPI integration modernization, stability improvements, and test/CI reliability. Delivered upgraded libraries, configurability enhancements, and clearer diagnostics to reduce upgrade risk and troubleshoot issues more quickly.
November 2024 monthly summary for OpenLiberty/open-liberty focusing on OpenAPI integration modernization, stability improvements, and test/CI reliability. Delivered upgraded libraries, configurability enhancements, and clearer diagnostics to reduce upgrade risk and troubleshoot issues more quickly.
Month 2024-10 — OpenLiberty/open-liberty: Consolidated OpenAPI test environment and versioning improvements, delivering reliable cross-version OpenAPI validation, improved test infrastructure, and a performance-oriented library upgrade. Focused on aligning tests with OpenAPI 3.0/3.1 configurations, ensuring the OpenAPI version is applied prior to validation, and tightening configuration labeling. This work reduces flaky tests, accelerates release readiness, and strengthens API testing capabilities for OpenAPI-driven features.
Month 2024-10 — OpenLiberty/open-liberty: Consolidated OpenAPI test environment and versioning improvements, delivering reliable cross-version OpenAPI validation, improved test infrastructure, and a performance-oriented library upgrade. Focused on aligning tests with OpenAPI 3.0/3.1 configurations, ensuring the OpenAPI version is applied prior to validation, and tightening configuration labeling. This work reduces flaky tests, accelerates release readiness, and strengthens API testing capabilities for OpenAPI-driven features.
Overview of all repositories you've contributed to across your timeline