NAME

OpenAPI::Client - A client for talking to an Open API powered server

DESCRIPTION

OpenAPI::Client is a class for generating classes that can talk to an Open API server. This is done by generating a custom class, based on a Open API specification, with methods that transform parameters into a HTTP request.

The generated class will perform input validation, so invalid data won't be sent to the server.

Not that this implementation is currently EXPERIMENTAL! Feedback is appreciated.

SYNOPSIS

Open API specification

The specification given to "new" need to point to a valid OpenAPI document, in either JSON or YAML format. Example:

  ---
  swagger: 2.0
  host: api.example.com
  basePath: /api
  schemes: [ "http" ]
  paths:
    /foo:
      get:
        operationId: listPets
        parameters:
        - name: limit
          in: query
          type: integer
        responses:
          200: { ... }

host, basePath and the first item in schemes will be used to construct "base_url". This can be altered at any time, if you need to send data to a custom endpoint.

Client

The OpenAPI API specification will be used to generate a sub-class of OpenAPI::Client where the "operationId", inside of each path definition, is used to generate methods:

  use OpenAPI::Client;
  $client = OpenAPI::Client->new("file:///path/to/api.json");

  # Blocking
  $tx = $client->listPets;

  # Non-blocking
  $client = $client->listPets(sub { my ($client, $tx) = @_; });

  # With parameters
  $tx = $client->listPets({limit => 10});

Customization

If you want to request a different server than what is specified in the Open API document:

  $client->base_url->host("other.server.com");

ATTRIBUTES

base_url

  $base_url = $self->base_url;

Returns a Mojo::URL object with the base URL to the API. The default value comes from schemes, basePath and host in the Open API specification.

ua

  $ua = $self->ua;

Returns a Mojo::UserAgent object which is used to execute requests.

METHODS

local_app

  $client = $client->local_app(Mojolicious->new);

This method will modify "ua" to run requests against the Mojolicious or Mojolicious::Lite application given as argument. (Useful for testing)

new

  $client = OpenAPI::Client->new($specification, \%attrs);
  $client = OpenAPI::Client->new($specification, %attrs);
  $client = OpenAPI::Client->new($specification, app => Mojolicious->new);

Returns an object of a generated class, with methods generated from the Open API specification located at $specification. See "schema" in JSON::Validator for valid versions of $specification.

Note that the class is cached by perl, so loading a new specification from the same URL will not generate a new class.

Specifying an app is useful when running against a local Mojolicious instance.

validator

  $validator = $self->validator;
  $validator = $class->validator;

Returns a JSON::Validator::OpenAPI::Mojolicious object for a generated class. Not that this is a global variable, so changing the object will affect all instances.

COPYRIGHT AND LICENSE

Copyright (C) 2017, Jan Henning Thorsen

This program is free software, you can redistribute it and/or modify it under the terms of the Artistic License version 2.0.

AUTHOR

Jan Henning Thorsen - jhthorsen@cpan.org

cpanm OpenAPI::Client

perl -MCPAN -e shell
install OpenAPI::Client