A simple program that merges multiple OpenAPI/Swagger schema files, and serves the merged result. This project was born to solve a very specific use-case where we at Clowre needed to see the API docs of all our microservices at one place.

However, this project also aims to be a generic solution for OpenAPI Schema merging.

By default, the server tries to resolve configuration from a Spring Cloud Config Server, so every external configuration must specify this property explicitly:

micronaut:
  config-client:
    enabled: false

The recommended way to run this server is through Docker. This server serves merged OpenAPI Schemas at http://host:port/docs.json.

docker run --rm -it --name=docserver -p 8080:8080 \
  -v "$(pwd)/_examples/external-configuration.yaml:/config.yaml" \
  -e MICRONAUT_CONFIG_FILES=/config.yaml \
  clowre/docserver:latest

If you wish to configure the docserver using a Cloud Config instance, it is required that CONFIG_SERVER_URI points to your configuration server. The docserver's application ID is clowre-docserver, so make sure that the configuration can be resolved by this name.

docker run --rm -it --name=docserver -p 8080:8080 \
  -e CONFIG_SERVER_URI=http://your-config-server:8888 \
  -e MICRONAUT_ENVIRONMENTS=cloud \
  clowre/docserver:latest

This is the only configuration that is required to be present to run a bare-minimum version of this server. This configuration is specified by the swagger: key in the configuration YAML. Here's a sample configuration that merges a couple of schemas.

swagger:
  ## Will be used to generate the merged OpenAPI file's 'servers' section - optional.
  servers:
    - url: http://myserver.local
      description: A really cool server that does stuff.
  ## Will be used to generate the merged OpenAPI file's 'info' section.
  info:
    ## Title of the merged OpenAPI schema. Required.
    title: A basic combined API YAML
    description: |-
      ## What it is
      An example of clowre/docserver's schema merge functionality.

      ## What it merges
      The swagger Pet Store and BoxKnight API schemas.

  ## List of OpenAPI schemas to be merged.
  sources:
    ## A friendly name of this resource to be used in logging - required.
    - name: Pet Store

      ## String to be used as a prefix of API paths - required
      path-prefix: pet-store

      ## Location of OpenAPI schema JSON/YAML - required
      address: https://redocly.github.io/redoc/openapi.yaml

      ## Version of schema - V2 or V3 - required
      version: V3

More configuration examples can be found in _examples directory of this repository.

The docserver can also serve off Swagger and ReDoc views out of the box. This functionality can be enabled by putting the following in your configuration:

views:
  enable-redoc: true
  enable-swagger: true

Once enabled, the views can be accessed at http://host:port/views/redoc and http://host:port/views/swagger.

This project is in alpha state right now, and is not meant to be used in production. However, this will keep on evolving and will see a production release as we at Clowre enhance it.

We're happy to take contributions in form of issues, feature requests, documentation, and code!