nemo-relay-instrument-context-isolation

от nvidia

Используйте этот навык, когда параллельные запросы, асинхронные задачи, потоки, воркеры, горутины или агенты нуждаются в независимых стеках областей видимости NeMo Relay и корректной родословной…

npx skills add https://github.com/nvidia/nemo-relay --skill nemo-relay-instrument-context-isolation

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Use Context Isolation

Use this skill when an application runs concurrent requests, worker pools, async tasks, goroutines, or multiple agents in the same process. Treat scope-stack ownership as part of the request boundary.

Core Rule

Each independent request, agent, or workflow needs its own scope stack. Do not share one mutable stack across unrelated concurrent work unless you want shared ancestry and shared scope-local middleware.

Embedded Scope Model

A root scope is always present, and pushed scopes form a parent-child tree beneath it.
Scope hierarchy determines event parentage, lifetime boundaries, and visibility for scope-local middleware and subscribers.
Standard scope types include Agent, Function, Tool, Llm, Retriever, Embedder, Reranker, Guardrail, Evaluator, Custom, and Unknown.
Scope start and end events can carry semantic input and output payloads when the scope represents a request, task, or meaningful result boundary.
Scope-local registrations disappear when the owning scope closes; use them for behavior that should not outlive a request or agent run.
Mark events are useful for retries, checkpoints, interrupts, and important state transitions that are not full spans.

Per-Language Defaults

Python: rely on task-local behavior via get_scope_stack() and contextvars, or explicitly propagate when work leaves the current execution context
Rust core: use runtime helpers such as create_scope_stack(), current_scope_stack(), and set_thread_scope_stack(...) when an integration needs explicit stack ownership
Go: use NewScopeStack() and ScopeStack.Run(...) for goroutine-safe usage
Node.js: create and set a scope stack explicitly for the current execution path with createScopeStack() and setThreadScopeStack(...)

Common Failures

Events from different requests appear under one root UUID
Scope-local middleware leaks across requests
Worker-thread work runs without the expected active scope
Integrations activate NeMo Relay without an explicitly initialized stack
Relying on a thread-local stack after crossing async tasks, goroutines, or JS worker boundaries