OpenSandbox

What's New

✨ Features

• Custom sandbox creation for client-side pools — Kotlin SandboxPool now accepts a custom creator that returns a Sandbox, allowing advanced creation flows while keeping pool ownership of health checks, TTL renewal, idle bookkeeping, direct-create fallback, and cleanup. Existing image/template based pool creation remains the default and is unchanged unless a creator is supplied. (https://github.com/opensandbox-group/OpenSandbox/pull/1125)

• Isolated execution session APIs — The Kotlin sandbox SDK now includes isolated-session models, services, and adapters for the new execd isolation runtime. Callers can create/delete isolated sessions and perform isolated filesystem operations through the SDK; server-side diff/commit support remains deferred in this phase. (https://github.com/opensandbox-group/OpenSandbox/pull/1008)

🐛 Bug Fixes

• Preserve server error details in exception strings — Kotlin SandboxException.toString() now appends parsed server error code/message and request_id when available. This avoids losing useful backend diagnostics in logs and exception rendering when the HTTP status alone is too generic. (https://github.com/opensandbox-group/OpenSandbox/pull/1122)

• Correct PVC cleanup semantics in SDK models and docs — Kotlin SDK model documentation for deleteOnSandboxTermination now reflects the Kubernetes cleanup behavior for opted-in auto-created PVCs. The option still defaults to false, so existing PVC-backed sandboxes keep their previous behavior unless callers explicitly opt in. (https://github.com/opensandbox-group/OpenSandbox/pull/880)

📦 Misc

• Bumped the Kotlin sandbox SDK artifact version to 1.0.15. (https://github.com/opensandbox-group/OpenSandbox/pull/1125)

👥 Contributors

• @Pangjiping
• @ninan-nn
• @xfgong