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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.4.0 - 2025-05-15

Added

  • Python bindings (rustkernel-python) — native Python access to all 106 batch kernels via PyO3
    • pip install rustkernels for Python 3.10+
    • KernelRegistry class with discovery (kernel_ids, by_domain, search) and execute() for batch kernels
    • Module-level execute() convenience function with cached default registry
    • Catalog API: list_domains(), total_kernel_count(), enabled_domains()
    • Full exception hierarchy mapping all KernelError variants
    • GIL-releasing async bridge (py.allow_threads() + internal tokio runtime)
    • Feature pass-through: --features full enables all 14 domains
    • scripts/publish-python.sh for PyPI publishing via maturin
  • Deep RingKernel 0.4.2 integration across all crates
    • Bidirectional Domain conversion between RustKernels and RingKernel
    • Re-exports: ControlBlock, Backend, KernelStatus, RuntimeMetrics, K2KConfig, Priority
    • Submodule re-exports: checkpoint, dispatcher, health, pubsub
  • Production-ready kernel execution — all 106 kernels fully implemented with real dispatch (no stubs)
  • Enterprise modules in rustkernel-core:
    • Security: JWT/API key auth, RBAC, multi-tenancy, secrets management
    • Observability: Prometheus metrics, OTLP tracing, structured logging, SLO alerting
    • Resilience: circuit breakers, exponential retry, timeout propagation, health probes
    • Runtime: lifecycle state machine, graceful shutdown, production config presets
    • Memory: size-stratified pools, pressure handling, inter-phase reductions
  • Ecosystem service layer (rustkernel-ecosystem):
    • Axum REST API (KernelRouter)
    • Tower middleware (timeout, rate limiting)
    • Tonic gRPC server (KernelGrpcServer)
    • Actix actor integration (KernelActor)
  • New kernels:
    • Graph: GNNInference, GraphAttention
    • ML: EmbeddingGeneration, SemanticSimilarity, SecureAggregation, DrugInteractionPrediction, ClinicalPathwayConformance, StreamingIsolationForest, AdaptiveThreshold, SHAPValues, FeatureImportance
    • Process Intelligence: DigitalTwin, NextActivityPrediction, EventLogImputation
  • K2K coordination patterns: IterativeState, ScatterGatherState, FanOutTracker, PipelineTracker
  • Type-erased batch execution via KernelRegistry::execute_batch(kernel_id, json_bytes)
  • CLI tool (rustkernel-cli) for kernel management

Changed

  • Workspace expanded to 20 crates (added rustkernel-python)
  • rustkernel-python excluded from default-members (requires Python dev headers)
  • pyo3 = "0.23" added to workspace dependencies

0.3.0 - 2025-03-01

Added

  • Initial 14-domain workspace with 106 kernel stubs
  • Core traits: GpuKernel, BatchKernel, RingKernelHandler, IterativeKernel
  • Kernel registry with typed factory registration
  • Domain-based licensing system
  • Proc macro derive: #[gpu_kernel], #[derive(KernelMessage)]