opensandbox-group/OpenSandbox java/sandbox/v1.0.15 on GitHub

What's New

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. (#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. (#1008)

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. (#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. (#880)