llama-stack-mirror/.github/workflows/conformance.yml
Charlie Doern ecd9d8dc1a
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test: introduce api conformance test (#3257)
# What does this PR do?

this test runs on each PR and uses a new conformance workflow to compare
the base (main) branch openapi spec to the one on this PR if one of our
"stable" APIs change, the test will fail.

this workflow uses `oasdiff` to identify breaking changes for paths we
want to ensure comptability for.

specifically this is using `oasdiff breaking` with `--match-path` which
only checks breaking changes for the specified paths.

As a follow up to this, we can add an optional way to make it so that it
is OK to make these change if properly documented or in a changelog or
something. or by using a label on the PR to override the failing test.

related to #3237


## Test Plan

conformance test should pass given there are no changes

Signed-off-by: Charlie Doern <cdoern@redhat.com>
2025-09-06 12:40:33 -07:00

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YAML

# API Conformance Tests
# This workflow ensures that API changes maintain backward compatibility and don't break existing integrations
# It runs schema validation and OpenAPI diff checks to catch breaking changes early
name: API Conformance Tests
run-name: Run the API Conformance test suite on the changes.
on:
push:
branches: [ main ]
pull_request:
branches: [ main ]
types: [opened, synchronize, reopened]
paths:
- 'llama_stack/**'
- '!llama_stack/ui/**'
- 'tests/**'
- 'uv.lock'
- 'pyproject.toml'
- '.github/workflows/conformance.yml' # This workflow itself
concurrency:
group: ${{ github.workflow }}-${{ github.ref == 'refs/heads/main' && github.run_id || github.ref }}
# Cancel in-progress runs when new commits are pushed to avoid wasting CI resources
cancel-in-progress: true
jobs:
# Job to check if API schema changes maintain backward compatibility
check-schema-compatibility:
runs-on: ubuntu-latest
steps:
# Using specific version 4.1.7 because 5.0.0 fails when trying to run this locally using `act`
# This ensures consistent behavior between local testing and CI
- name: Checkout PR Code
uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
# Checkout the base branch to compare against (usually main)
# This allows us to diff the current changes against the previous state
- name: Checkout Base Branch
uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
with:
ref: ${{ github.event.pull_request.base.ref }}
path: 'base'
# Install oasdiff: https://github.com/oasdiff/oasdiff, a tool for detecting breaking changes in OpenAPI specs.
- name: Install oasdiff
run: |
curl -fsSL https://raw.githubusercontent.com/oasdiff/oasdiff/main/install.sh | sh
# Run oasdiff to detect breaking changes in the API specification
# This step will fail if incompatible changes are detected, preventing breaking changes from being merged
- name: Run OpenAPI Breaking Change Diff
run: |
oasdiff breaking --fail-on ERR base/docs/_static/llama-stack-spec.yaml docs/_static/llama-stack-spec.yaml --match-path '^/v1/openai/v1' \
--match-path '^/v1/vector-io' \
--match-path '^/v1/vector-dbs'