# jackin-otlp-testbed (https://jackin.tailrocks.com/reference/crates/jackin-otlp-testbed/)



{/* GENERATED from crates/jackin-otlp-testbed/README.md — edit the README, not this file */}

\<!-- SPDX-FileCopyrightText: 2026 Alexey Zhokhov -->
\<!-- SPDX-License-Identifier: Apache-2.0 -->

# jackin-otlp-testbed [#jackin-otlp-testbed]

Test-only OTLP/gRPC receiver used by jackin❯ conformance suites. It records typed trace, log, and metric requests and provides deterministic success, partial-success, delay, and gRPC-error behavior. It is never linked into product binaries or shipped as a Collector.

## What this crate owns [#what-this-crate-owns]

* Loopback implementations of the three OTLP collector services.
* Typed decoded-request accessors and namespace/privacy detector support.
* Deterministic exporter failure fixtures.

## Architecture tier and allowed dependencies [#architecture-tier-and-allowed-dependencies]

T3 test infrastructure. Product crates must never depend on it outside dev/test scopes.

## Structure [#structure]

| Module                                                                     | Owns                                                    | Tests                                   |
| -------------------------------------------------------------------------- | ------------------------------------------------------- | --------------------------------------- |
| <RepoFile path="crates/jackin-otlp-testbed/src/lib.rs">`lib.rs`</RepoFile> | receiver, scripted behavior, captured-request accessors | module loopback and detector self-tests |

## Public API [#public-api]

`Testbed::start`, endpoint and signal accessors, `Behavior`, wait helpers, and detector results for acceptance tests.

## How to verify [#how-to-verify]

`cargo nextest run -p jackin-otlp-testbed --locked`