# NAME
Mojolicious::Plugin::OpenAPI - OpenAPI / Swagger plugin for Mojolicious
# SYNOPSIS
use Mojolicious::Lite;
# Will be moved under "basePath", resulting in "POST /api/echo"
post "/echo" => sub {
# Validate input request or return an error document
my $c = shift->openapi->valid_input or return;
# Generate some data
my $data = {body => $c->req->json};
# Validate the output response and render it to the user agent
# using a custom "openapi" handler.
$c->render(openapi => $data);
}, "echo";
# Load specification and start web server
plugin OpenAPI => {url => "data:///spec.json"};
app->start;
__DATA__
@@ spec.json
{
"swagger" : "2.0",
"info" : { "version": "0.8", "title" : "Echo Service" },
"schemes" : [ "http" ],
"basePath" : "/api",
"paths" : {
"/echo" : {
"post" : {
"x-mojo-name" : "echo",
"parameters" : [
{ "in": "body", "name": "body", "schema": { "type" : "object" } }
],
"responses" : {
"200": {
"description": "Echo response",
"schema": { "type": "object" }
}
}
}
}
}
}
See [Mojolicious::Plugin::OpenAPI::Guides::OpenAPIv2](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3AGuides%3A%3AOpenAPIv2) or
[Mojolicious::Plugin::OpenAPI::Guides::OpenAPIv3](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3AGuides%3A%3AOpenAPIv3) for tutorials on how to
write a "full" app with application class and controllers.
Looking at the documentation for
["x-mojo-to" in Mojolicious::Plugin::OpenAPI::Guides::OpenAPIv2](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3AGuides%3A%3AOpenAPIv2#x-mojo-to) can be especially
useful if you are using extensions (formats) such as ".json". The logic is the
same for OpenAPIv2 and OpenAPIv3.
# DESCRIPTION
[Mojolicious::Plugin::OpenAPI](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI) is [Mojolicious::Plugin](https://metacpan.org/pod/Mojolicious%3A%3APlugin) that add routes and
input/output validation to your [Mojolicious](https://metacpan.org/pod/Mojolicious) application based on a OpenAPI
(Swagger) specification. This plugin supports both version [2.0](#schema) and
[3.x](#schema), though 3.x _might_ have some missing features.
Have a look at the ["SEE ALSO"](#see-also) for references to more documentation.
Please report in [issues](https://github.com/jhthorsen/json-validator/issues)
or open pull requests to enhance the 3.0 support.
# HELPERS
## openapi.spec
$hash = $c->openapi->spec($json_pointer)
$hash = $c->openapi->spec("/info/title")
$hash = $c->openapi->spec;
Returns the OpenAPI specification. A JSON Pointer can be used to extract a
given section of the specification. The default value of `$json_pointer` will
be relative to the current operation. Example:
{
"paths": {
"/pets": {
"get": {
// This datastructure is returned by default
}
}
}
}
## openapi.validate
@errors = $c->openapi->validate;
Used to validate a request. `@errors` holds a list of
[JSON::Validator::Error](https://metacpan.org/pod/JSON%3A%3AValidator%3A%3AError) objects or empty list on valid input.
Note that this helper is only for customization. You probably want
["openapi.valid\_input"](#openapi-valid_input) in most cases.
## openapi.valid\_input
$c = $c->openapi->valid_input;
Returns the [Mojolicious::Controller](https://metacpan.org/pod/Mojolicious%3A%3AController) object if the input is valid or
automatically render an error document if not and return false. See
["SYNOPSIS"](#synopsis) for example usage.
# HOOKS
[Mojolicious::Plugin::OpenAPI](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI) will emit the following hooks on the
[application](https://metacpan.org/pod/Mojolicious) object.
## openapi\_routes\_added
Emitted after all routes have been added by this plugin.
$app->hook(openapi_routes_added => sub {
my ($openapi, $routes) = @_;
for my $route (@$routes) {
...
}
});
This hook is EXPERIMENTAL and subject for change.
# RENDERER
This plugin register a new handler called `openapi`. The special thing about
this handler is that it will validate the data before sending it back to the
user agent. Examples:
$c->render(json => {foo => 123}); # without validation
$c->render(openapi => {foo => 123}); # with validation
This handler will also use ["renderer"](#renderer) to format the output data. The code
below shows the default ["renderer"](#renderer) which generates JSON data:
$app->plugin(
OpenAPI => {
renderer => sub {
my ($c, $data) = @_;
return Mojo::JSON::encode_json($data);
}
}
);
# ATTRIBUTES
## route
$route = $openapi->route;
The parent [Mojolicious::Routes::Route](https://metacpan.org/pod/Mojolicious%3A%3ARoutes%3A%3ARoute) object for all the OpenAPI endpoints.
## validator
$jv = $openapi->validator;
Holds either a [JSON::Validator::Schema::OpenAPIv2](https://metacpan.org/pod/JSON%3A%3AValidator%3A%3ASchema%3A%3AOpenAPIv2) or a
[JSON::Validator::Schema::OpenAPIv3](https://metacpan.org/pod/JSON%3A%3AValidator%3A%3ASchema%3A%3AOpenAPIv3) object.
# METHODS
## register
$openapi = $openapi->register($app, \%config);
$openapi = $app->plugin(OpenAPI => \%config);
Loads the OpenAPI specification, validates it and add routes to
[$app](https://metacpan.org/pod/Mojolicious). It will also set up ["HELPERS"](#helpers) and adds a
[before\_render](https://metacpan.org/pod/Mojolicious#before_render) hook for auto-rendering of error
documents. The return value is the object instance, which allow you to access
the ["ATTRIBUTES"](#attributes) after you load the plugin.
`%config` can have:
### allow\_invalid\_ref
The OpenAPI specification does not allow "$ref" at every level, but setting
this flag to a true value will ignore the $ref check.
Note that setting this attribute is discourage.
### coerce
See ["coerce" in JSON::Validator](https://metacpan.org/pod/JSON%3A%3AValidator#coerce) for possible values that `coerce` can take.
Default: booleans,numbers,strings
The default value will include "defaults" in the future, once that is stable enough.
### default\_response
Instructions for
["add\_default\_response\_schema" in JSON::Validator::Schema::OpenAPIv2](https://metacpan.org/pod/JSON%3A%3AValidator%3A%3ASchema%3A%3AOpenAPIv2#add_default_response_schema). (Also used
for OpenAPIv3)
### format
Set this to a default list of file extensions that your API accepts. This value
can be overwritten by
["x-mojo-to" in Mojolicious::Plugin::OpenAPI::Guides::OpenAPIv2](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3AGuides%3A%3AOpenAPIv2#x-mojo-to).
This config parameter is EXPERIMENTAL and subject for change.
### log\_level
`log_level` is used when logging invalid request/response error messages.
Default: "warn".
### plugins
A list of OpenAPI classes to extend the functionality. Default is:
[Mojolicious::Plugin::OpenAPI::Cors](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3ACors),
[Mojolicious::Plugin::OpenAPI::SpecRenderer](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3ASpecRenderer) and
[Mojolicious::Plugin::OpenAPI::Security](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3ASecurity).
$app->plugin(OpenAPI => {plugins => [qw(+Cors +SpecRenderer +Security)]});
You can load your own plugins by doing:
$app->plugin(OpenAPI => {plugins => [qw(+SpecRenderer My::Cool::OpenAPI::Plugin)]});
### renderer
See ["RENDERER"](#renderer).
### route
`route` can be specified in case you want to have a protected API. Example:
$app->plugin(OpenAPI => {
route => $app->routes->under("/api")->to("user#auth"),
url => $app->home->rel_file("cool.api"),
});
### skip\_validating\_specification
Used to prevent calling ["errors" in JSON::Validator::Schema::OpenAPIv2](https://metacpan.org/pod/JSON%3A%3AValidator%3A%3ASchema%3A%3AOpenAPIv2#errors) for the
specification.
### spec\_route\_name
Name of the route that handles the "basePath" part of the specification and
serves the specification. Defaults to "x-mojo-name" in the specification at
the top level.
### url
See ["schema" in JSON::Validator](https://metacpan.org/pod/JSON%3A%3AValidator#schema) for the different `url` formats that is
accepted.
`spec` is an alias for "url", which might make more sense if your
specification is written in perl, instead of JSON or YAML.
### version\_from\_class
Can be used to overridden `/info/version` in the API specification, from the
return value from the `VERSION()` method in `version_from_class`.
This will only have an effect if "version" is "0".
Defaults to the current `$app`.
# AUTHORS
Henrik Andersen
Ilya Rassadin
Jan Henning Thorsen
Joel Berger
# COPYRIGHT AND LICENSE
Copyright (C) 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.
# SEE ALSO
- [Mojolicious::Plugin::OpenAPI::Guides::OpenAPIv2](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3AGuides%3A%3AOpenAPIv2)
Guide for how to use this plugin with OpenAPI version 2.0 spec.
- [Mojolicious::Plugin::OpenAPI::Guides::OpenAPIv3](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3AGuides%3A%3AOpenAPIv3)
Guide for how to use this plugin with OpenAPI version 3.0 spec.
- [Mojolicious::Plugin::OpenAPI::Cors](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3ACors)
Plugin to add Cross-Origin Resource Sharing (CORS).
- [Mojolicious::Plugin::OpenAPI::Security](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3ASecurity)
Plugin for handling security definitions in your schema.
- [Mojolicious::Plugin::OpenAPI::SpecRenderer](https://metacpan.org/pod/Mojolicious%3A%3APlugin%3A%3AOpenAPI%3A%3ASpecRenderer)
Plugin for exposing your spec in human readble or JSON format.
- [https://www.openapis.org/](https://www.openapis.org/)
Official OpenAPI website.