Files
grafana/pkg/services/ngalert/api/tooling
Alexander Weaver 40ff163fde Alerting: Code-gen parsing of URL parameters and fix related bugs (#50731) (#51353)
* Extend template and generate

* Generate and fix up alertmanager endpoints

* Prometheus routes

* fix up Testing endpoints

* touch up ruler API

* Update provisioning and fix 500

* Drop dead code

* Remove more dead code

* Resolve merge conflicts

(cherry picked from commit 0d9389e1f4)
2022-06-23 16:51:01 -04:00
..

What

This aims to define the unified alerting API as code. It generates OpenAPI definitions from go structs. It also generates server/route stubs based on our documentation.

Running

make - regenerate everything - documentation and server stubs. make serve - regenerate the Swagger document, and host rendered docs on port 80. view api

Requires

Why

The current state of Swagger extraction from golang is relatively limited. It's easier to generate server stubs from an existing Swagger doc, as there are limitations with producing a Swagger doc from a hand-written API stub. The current extractor instead relies on comments describing the routes, but the comments and actual implementation may drift, which we don't want to allow.

Instead, we use a hybrid approach - we define the types in Golang, with comments describing the routes, in a standalone package with minimal dependencies. From this, we produce a Swagger doc, and then turn the Swagger doc back into a full-blown server stub.

Stability

We have some endpoints that we document publically as being stable, and others that we consider unstable. The stable endpoints are documented in api.json, where all endpoints are available in post.json.

To stabilize an endpoint, add the stable tag to its route comment:

// swagger:route GET /api/provisioning/contact-points provisioning stable RouteGetContactpoints