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Swagger integration for Bottle

Project description

About

This project is a Bottle plugin for working with Swagger. Bottle is a Python web framework. Swagger (OpenAPI) is a standard for defining REST APIs.

So if you are serving a REST API with Bottle, and you have a defined a Swagger schema for that API, this plugin can:

  • Validate incoming requests and outgoing responses against the swagger schema

  • Return appropriate error responses on validation failures

  • Serve your swagger schema via Bottle (for use in Swagger UI for example)

Requirements

  • Python >= 2.7

  • Bottle >= 0.12

  • Swagger specification >= 2.0

This project relies on bravado-core to perform the swagger schema validation, so any version of the Swagger spec supported by that project is also supported by this plugin.

Installation

$ pip install bottle-swagger

Usage

See the “example” directory for a working example of using this plugin.

The simplest usage is:

import bottle

swagger_def = _load_swagger_def()
bottle.install(SwaggerPlugin(swagger_def))

Where “_load_swagger_def” returns a dict representing your swagger specification (loaded from a yaml file, for example).

There are a number of arguments that you can pass to the plugin constructor:

  • validate_requests - Boolean (default True) indicating if incoming requests should be validated or not

  • validate_responses - Boolean (default True) indicating if outgoing responses should be validated or not

  • ignore_undefined_paths - Boolean (default False) indicating if undefined paths (that is, paths not defined in the swagger spec) should be passed on (“True”) or return a 404 (“False”)

  • invalid_request_handler - Callback called when request validation has failed. Default behaviour is to return a “400 Bad Request” response.

  • invalid_response_handler - Callback called when response validation has failed. Default behaviour is to return a “500 Server Error” response.

  • swagger_op_not_found_handler - Callback called when no swagger operation matching the request was found in the swagger schema. Default behaviour is to return a “404 Not Found” response.

  • exception_handler=_server_error_handler - Callback called when an exception is thrown by downstream handlers (including exceptions thrown by your code). Default behaviour is to return a “500 Server Error” response.

  • serve_swagger_schema - Boolean (default True) indicating if the Swagger schema JSON should be served

  • swagger_schema_url - URL (default /swagger.json) on which to serve the Swagger schema JSON

All the callbacks above receive a single parameter representing the Exception that was raised, or in the case of swagger_op_not_found_handler the Route that was not found. They should all return a Bottle Response object.

Contributing

Development happens in the bottle-swagger GitHub respository. Pull requests (with accompanying unit tests), feature suggestions and bug reports are welcome.

Use “tox” to run the unit tests:

$ tox

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