NAME

Amon2::Plugin::Web::CpanelJSON - Cpanel::JSON::XS plugin

SYNOPSIS

use Amon2::Lite;
use Cpanel::JSON::XS::Type;
use HTTP::Status qw(:constants);

__PACKAGE__->load_plugins(qw/Web::CpanelJSON/);

use constant HelloWorld => {
    message => JSON_TYPE_STRING,
};

get '/' => sub {
    my $c = shift;
    return $c->render_json(+{ message => 'HELLO!' }, HelloWorld, HTTP_OK);
};

__PACKAGE__->to_app();

DESCRIPTION

This is a JSON plugin for Amon2. The differences from Amon2::Plugin::Web::JSON are as follows.

* Cpanel::JSON::XS::Type is available

* HTTP status code can be specified

* Flexible Configurations

METHODS

$c->render_json($data, $json_spec, $status=200);

Generate JSON $data and $json_spec and returns instance of Plack::Response. $json_spec is a structure for JSON encoding defined in Cpanel::JSON::XS::Type.

CONFIGURATION

json

Parameters of Cpanel::JSON::XS. Default is as follows:

ascii => !!1,

Any parameters can be set:

 __PACKAGE__->load_plugins(
    'Web::CpanelJSON' => {
        json => {
            ascii     => 0,
            utf8      => 1,
            canonical => 1,
        }
    }
);

secure_headers

Parameters of HTTP::SecureHeaders. Default is as follows:

content_security_policy           => "default-src 'none'",
strict_transport_security         => 'max-age=631138519',
x_content_type_options            => 'nosniff',
x_download_options                => undef,
x_frame_options                   => 'DENY',
x_permitted_cross_domain_policies => 'none',
x_xss_protection                  => '1; mode=block',
referrer_policy                   => 'no-referrer',

json_escape_filter

Escapes JSON to prevent XSS. Default is as follows:
```
'+' => '\\u002b',
'<' => '\\u003c',
'>' => '\\u003e',
```
name

Name of method. Default: 'render_json'

unbless_object

Default: undef

This option is preprocessing coderef encoding an blessed object in JSON. For example, the code using Object::UnblessWithJSONSpec is as follows:

use Object::UnblessWithJSONSpec ();

__PACKAGE__->load_plugins(
    'Web::CpanelJSON' => {
        unbless_object => \&Object::UnblessWithJSONSpec::unbless_with_json_spec,
    }
);

...

package Some::Object {
    use Mouse;

    has message => (
        is => 'ro',
    );
}

my $object = Some::Object->new(message => 'HELLO');
$c->render_json($object, { message => JSON_TYPE_STRING })
# => {"message":"HELLO"}

status_code_field

Default: undef

It specify the field name of JSON to be embedded in the X-API-Status header. Default is undef. If you set the undef to disable this X-API-Status header.
```
__PACKAGE__->load_plugins(
    'Web::CpanelJSON' => { status_code_field => 'status' }
);

...

$c->render_json({ status => 200, message => 'ok' })
# send response header 'X-API-Status: 200'
```
In general JSON API error code embed in a JSON by JSON API Response body. But can not be logging the error code of JSON for the access log of a general Web Servers. You can possible by using the X-API-Status header.
defence_json_hijacking_for_legacy_browser

Default: false

LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

kfly8 kfly@cpan.org

kfly8 / p5-Amon2-Plugin-Web-CpanelJSON