* update hyperlight to beta and move samples, add hosted agent sample
* Python: Fix hyperlight WasmSandbox cross-thread Drop and harden sample
Root cause: when a worker-side closure raised, the exception's __traceback__
retained frame locals that included the partially constructed PyO3 sandbox.
Future.result() re-raised that exception on the caller thread, and when the
caller's exception was eventually GC'd the frame locals were released
off-thread, dec_ref'ing the unsendable sandbox from the wrong thread and
tripping the PyO3 panic
'_native_wasm::WasmSandbox is unsendable, but is being dropped on another thread'.
Fix:
* Add _SandboxWorker._run_on_worker which catches every exception on the
worker, drops __traceback__ there, deletes the original exception, and
re-raises a fresh instance on the caller thread. initialize and execute
route through it; dispose keeps its bare-submit semantics.
* Add an opt-in diagnostic module _drop_diagnostic (no-op unless
HYPERLIGHT_TRACE_DROPS=1) that installs a sys.unraisablehook and dumps
owner-thread + per-thread stacks on any future cross-thread unsendable
Drop. Useful for triaging similar PyO3 regressions.
* Tests: cross-thread invocation, traceback-leak isolation, _SandboxEntry
attribute-shape check, and a stale-reference stress test driven through
asyncio.to_thread.
Sample (samples/04-hosting/foundry-hosted-agents/responses/06_hyperlight_codeact):
* Dockerfile installs agent-framework-* from in-tree source with python/ as
build context so unreleased fixes can be validated end-to-end.
* call_server.py pins the Responses API version.
* main.py enables include_detailed_errors=True so future tool failures
surface the actual exception text instead of a bare 'Error: Function
failed.' string.
* README.md documents the in-tree-package build and the Hyperlight
hypervisor requirement (/dev/kvm on Linux, MSHV on Windows). Hosted
environments without hypervisor passthrough surface 'No Hypervisor was
found for Sandbox'; this is a hosting constraint, not a hyperlight bug.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Python: remove _drop_diagnostic from hyperlight package
The diagnostic module was useful while bisecting the cross-thread Drop bug,
but it is no longer needed now that _SandboxWorker._run_on_worker prevents
the panic at the source.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Python: address PR review feedback on hyperlight
- Use lazy agent_framework.hyperlight import in sample main.py.
- Env-driven endpoint (FOUNDRY_AGENT_ENDPOINT) in call_server.py; remove personal URLs.
- Align agent.yaml model deployment with manifest (gpt-4.1-mini).
- Tighten Dockerfile requirements guard; drop dangling deploy.ps1 reference.
- Preserve exception args when sanitizing tracebacks in _run_on_worker.
- Add public _SandboxWorker.is_alive(); update test to avoid private attr.
- Add namespace coverage tests for agent_framework.hyperlight lazy loader.
- Add prominent note: Foundry hosted-agent runtime does not yet support
Hyperlight (no hypervisor exposed); container works locally with /dev/kvm.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Python: bump hyperlight-sandbox dependencies to 0.4.x
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Python: renumber hyperlight codeact sample to 08
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Coerce worker exception args to strings for cross-thread safety
Stringify exc.args on the worker thread before propagating, so any
PyO3 unsendable object captured in args (e.g. via a caller-supplied
callback or underlying SDK) cannot be Dropped on the calling thread.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* moved sample
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Eduard van Valkenburg
·
2026-05-05 10:06:16 +00:00
* docs(samples): recommend uv venv to avoid Windows ensurepip hang
Replace bare 'python -m venv .venv' with 'uv venv .venv' as the
recommended approach in azure_functions and foundry-hosted-agents
READMEs. Add a note explaining that python -m venv can hang
indefinitely on Windows with Microsoft Store Python due to a known
ensurepip issue.
This matches the pattern already used in a2a/README.md which uses
uv run exclusively.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Python: docs(python/samples): recommend `uv venv` and document Windows ensurepip hang workaround
Fixes#5401
* fix: correct Windows venv activation commands in foundry-hosted-agents README (#5401)
Split the Windows activation section into separate PowerShell (.venv\Scripts\Activate.ps1)
and Command Prompt (.venv\Scripts\activate.bat) instructions, replacing the incorrect
extensionless `Activate` path.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Address review feedback for #5401: Python: [Samples][Python] `python -m venv` hangs on Windows — READMEs should recommend uv or document workaround
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Co-authored-by: Copilot <copilot@github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Python: Wrapper + Samples 1st (#5177)
* Experiment
* Update dependency and add non streaming
* Add more samples
* Rename samples
* Add invocations
* Comments 1
* Comments 2
* Comments 3
* Improve README
* Add local shell sample
* WIP: Add eval and memory samples
* Update user agent prefix
* Update user agent prefix doc
* Update dependency (#5215)
* Add tests and more content types (#5235)
* Add tests
* fix tests and sample
* Fix formatting
* Remove function approval contents
* Python: Refine samples and upgrade packages (#5261)
* Refine samples and upgrade pacakges
* Upgrade to a new package that fixes a bug
* Update model env var
* Move samples (#5281)
* Python: Upgrade agentserver packages (#5284)
* Upgrade agentserver packages
* Fix new types
* Python: Add special handling for workflows (#5298)
* Add special handling for workflows
* Address comments
* Improve samples (#5372)
* Python: Add more types (#5378)
* Add more type supports
* Upgrade packages
* Remove TODOs in README
* Fix README
* Comments and mypy
* User agent scoped
* Fix README
* Fix pre commit
* Fix pre commit 2
* Fix pre commit 3
* Fix pre commit 4
* Fix pre commit 5
* Fix pre commit 6
* Add azure-monitor-opentelemetry to dev deps
Fixes Samples & Markdown CI failure. The PR's new transitive dep on
azure-monitor-opentelemetry-exporter (via azure-ai-agentserver-core) makes
pyright resolve the azure.monitor.opentelemetry namespace, flipping the
check_md_code_blocks diagnostic for `configure_azure_monitor` from
reportMissingImports (filtered) to reportAttributeAccessIssue (not filtered).
Installing the umbrella azure-monitor-opentelemetry package in dev makes
pyright resolve the symbol correctly, matching the install guidance the
observability README already gives users.
---------
Co-authored-by: Evan Mattson <evan.mattson@microsoft.com>
Tao Chen ·
Eduard van Valkenburg ·
Evan Mattson ·