June 2026 monthly summary for senbox-org projects (snap-engine, snap-desktop). Focused on cross-platform stability, expanded geospatial data format support, and maintainability. Key features delivered, major bugs fixed, and measurable business value achieved. Technologies demonstrated include GDAL, SNAP GDAL Reader, VFS/VirtualDir, and CI/CD/documentation practices.

Month: 2026-05 — Focused on performance and reliability improvements in the GDALProductReader for GeoTIFF handling within senbox-org/snap-engine, with two committed fixes addressing SNAP-4100. Delivered significant GeoTIFF read performance optimizations and added color table support for indexed color GeoTIFFs, enhancing imagery fidelity and user productivity.

April 2026 performance summary focusing on VFS enablement, cross-repo collaboration, and CI stability across the Snap ecosystem. Key features delivered: - Implemented and stabilized a comprehensive Virtual File System (VFS) integration across core SNAP modules (engine, GPF, readers) to support VFS input decoding, opening, and streaming for Envisat, GeoTiff, GETASSE30DEM, NetCDF, BinnedProductReader, and vector datasets. This included integrating the VFS module into SNAP GPF and ensuring compatibility with ReadOp and NetCDF operations. - Created a VFS path conversion utility to translate product input objects into VFS-compatible VirtualDir representations, enabling consistent path handling across readers. - Built VFS directory listing, existence checks, InputStream creation, and ZIP handling utilities (VirtualDir/VirtualDirEx and ZipUtils) to improve reliability of access and packaging formats on VFS. - Extended VFS support to vectors and resampling presets by enabling SubsetOp, ImportVectorOp, and ResamplingOp to operate on VFS paths, and loading presets from VFS. - Merged and stabilized SNAP-1602_vfs_integration to resolve conflicts and finalize VFS integration across SNAP components. - Desktop CI improvements: fixed missing @NotNull dependency, cleaned up code to reduce warnings, and stabilized CI builds. - Optical Toolbox CI stabilization: fixed Maven dependency versions in the optical-toolbox module and aligned updates across readers to restore CI passes. Major bugs fixed: - Resolved pervasive VFS input handling issues across multiple readers (Envisat, GeoTiff, GETASSE30DEM, NetCDF, BinnedProductReader, engine/GPF integration) and for vector inputs and resampling presets, enabling reliable decoding/opening and reading from VFS. - Fixed directory listing, existence checks, InputStream creation, and ZIP reading for VFS-based VirtualDir/VirtualDirEx, reducing read-time failures. - Addressed CI build failures caused by incorrect dependency versions in Optical Toolbox and desktop dependencies to restore reliable automated builds. Overall impact and accomplishments: - Enabled consistent, scalable ingestion of data from VFS across 20+ readers and tools, reducing manual workarounds, increasing data accessibility, and improving pipeline reliability for customers using shared VFS storage. - Strengthened cross-repo collaboration and code quality through merge cleanup, tests adjustments, and CI stabilization, accelerating delivery and reducing regression risk. Technologies/skills demonstrated: - Java-based VFS integration, VirtualDir/VirtualDirEx, ZipUtils, JUnit test updates, and plugin-level compatibility work. - Cross-module coordination (SNAP Engine, GPF, readers, core utilities) and large-scale merge conflict resolution. - CI/CD discipline: Maven dependency management, CI stability improvements for desktop UI and optical toolbox modules.