September 2025 monthly summary for eclipse-zenoh/zenoh-plugin-ros2dds. Implemented targeted Zenoh integration updates to improve stability and maintenance of the ROS2 DDS plugin, aligning dependencies with a fork/branch source before returning to the main Zenoh branch for the latest stable version. Migrated runtime/config patterns to support DynamicRuntime and adjusted access patterns to align with the new runtime semantics. Ensured build metadata (Cargo.toml and Cargo.lock) reflect the correct Zenoh source/version for compatibility and deterministic builds.

July 2025: Key feature delivered — Querier Stability and API Integration for zenoh. Stabilized the querier by removing unstable feature flags, consolidating related code, and refactoring handling of matching listeners and locality, then integrated these changes into the core API to improve stability and usability of the querier and matching status features. Major bugs fixed: stabilization of querier, matching status, and locality flows, reducing edge-case failures and inconsistency in behavior. Overall impact: more reliable queries, easier adoption by downstream clients, and a cleaner maintenance surface with a tighter API. Technologies/skills demonstrated: API design/integration, code consolidation and refactoring, feature-flag management, and robust handling of listeners and locality in concurrent systems.

April 2025—eclipse-zenoh/zenoh-pico: Build system enhancement to expose Z_FEATURE_BATCHING in PackageConfig.cmake.in, enabling a new CMake variable to turn batching features on or off during package configuration. This aligns packaging with feature gating requirements and improves configurability across build environments. No major bugs fixed this month; focus was on enabling configurable packaging, which lays groundwork for future reliability and scalability.

January 2025 (2025-01): Delivered a refactor of the advanced subscriber recovery options in ZettaScaleLabs/zenoh-c, introducing a new structure for last sample miss detection and aligning default recovery settings with the updated structure. Updated documentation and examples to reflect the changes. The change enabling a default recovery option without last sample miss detection was committed (13a21fddf269b2503d1013056885b0b3f8a29722). No major bugs fixed this month. Overall impact: improved reliability and predictability of subscriber recovery, reduced risk of data loss due to missed samples, and clearer defaults to accelerate onboarding and usage. Technologies/skills demonstrated: C language refactor, API design and backward-compatibility considerations, documentation and example suite updates.

In December 2024, delivered targeted improvements for eclipse-zenoh/zenoh-cpp focused on build reliability, consistency, and maintainability of the C++ examples. Implemented a bug fix to ensure liveliness examples build correctly when zenoh-c is disabled, preventing CI/test regressions and aligning builds with the expected configurations. Initiated and progressed the unification of C++ argument parsing by introducing a class-based ConfigCliArgParser and applying it across Zenoh C++ examples, migrating away from the legacy C-style parser. Work progressed from an initial WIP stage to a stabilized integration across examples, setting the stage for broader adoption and easier future enhancements.

November 2024 (eclipse-zenoh/zenoh-cpp): Delivered subscriber querying API enhancements, extended GetOptions, and consolidated options under Session for a cleaner API. Documentation updates and examples accompany the changes to accelerate adoption and reduce integration effort. The work improves API usability, developer productivity, and system observability through clearer usage patterns and examples.