sim_validator gear [Roadmap]

WARNING

[Roadmap]: This gear is currently under development and not yet available.

Commercial gear, licensed separately from the engine, like sim_source and sim_responder: source-available under the Business Source License 1.1 once it ships. See the enterprise introduction.

sim_validator is a companion gear to sim_source: a separate gear, not a new port on the generator itself, so that generating traffic and judging what came back stay two different concerns. sim_source has no in port and is not going to gain one; sim_validator is where the reply to a generated request goes once something needs to read it.

Planned capabilities

• Correlation: match each reply to the request that produced it, by STAN or another correlation key the spec declares.
• Validation: check a reply against what the request implied, not just whether one arrived at all: a response code consistent with the amount and rules that generated the request, fields the spec's pairs_with and response_value say must echo.
• Metrics: counts by outcome (matched, mismatched, no reply within a deadline), and latency from request to reply.

How it attaches to the traffic it reads is not decided; the wiring shown in the simulation tutorial is illustrative, not a commitment.