Gate CI — GitLab CI

Fail your pipeline automatically when performance thresholds are not met. Uses the lmn Docker image directly as the job image — no Rust toolchain required.

Pipeline snippet

Add this to your .gitlab-ci.yml:

stages:
  - deploy      # your existing deploy stage
  - load-test

load-test:
  stage: load-test
  image: ghcr.io/talek-solutions/lmn:latest

  variables:
    # Injected from project CI/CD variables (Settings → CI/CD → Variables).
    # Mark it as masked and protected.
    API_TOKEN: $API_TOKEN

  script:
    - lmn run -f lmn.yaml --output-file lmn-result.json

  artifacts:
    name: "lmn-result-$CI_COMMIT_SHORT_SHA"
    when: always
    paths:
      - lmn-result.json
    expire_in: 14 days

  # Only run on the main branch after a successful deploy
  rules:
    - if: $CI_COMMIT_BRANCH == "main"
      when: on_success

lmn.yaml for CI

run:
  host: https://api.example.com/health
  method: get
  headers:
    Authorization: "Bearer ${API_TOKEN}"

execution:
  request_count: 200
  concurrency: 10

thresholds:
  - metric: error_rate
    operator: lt
    value: 0.01       # less than 1% errors
  - metric: latency_p99
    operator: lt
    value: 1000.0     # p99 under 1 second

How it works

• Exit code 0 — all thresholds passed, job succeeds
• Exit code 2 — a threshold failed, job fails and blocks downstream stages or merge requests
• Exit code 1 — config or connectivity error, job fails

The artifact is collected with when: always so the JSON report is available even when the job fails.

Prerequisites

• Add API_TOKEN to Settings → CI/CD → Variables, marked as masked and protected
• Commit lmn.yaml to the repository root (or adjust the -f path)