JSON-RPC 2.0 Server supporting PSR-7

Server

The server is a complete implementation of the JSON-RPC 2.0 specification. The server will expose public methods of an object or a static class which can be optionally limited using an interface or specific parent class.

To encourage interface segregation there is no support for other methods like closures or global functions.

Features

• Full specification including notifications, both parameters by name and by position and batch requests
• Default values are used for skipped arguments
• Variadic arguments are supported
• PSR-7 compatible: This server can directly handle implementations of Psr\Http\Message\ServerRequestInterface, returning an implementation of Psr\Http\Message\ResponseInterface, as defined in PSR-7

Requirements

PHP >= 8.0

Example

Subject classes

MyInterface

<?php
interface MyInterface
{
    public function foo();
}

MySubjectClass

<?php
class MySubjectClass implements MyInterface
{
    public function foo()
    {
        return 'foo';
    }

    public function bar()
    {
        return 'bar';
    }
}

Handle request directly

<?php
use Procurios\Json\JsonRpc\Server;
use Procurios\Json\JsonRpc\Request\Request;

$requestData = json_decode(file_get_contents('php://input'), true);
$Request = Request::fromArray($requestData);

$Server = new Server(new MySubjectClass);
$Response = $Server->handleRequest($Request);

header('Content-Type: application/json');
die($Response->asString());

Handle PSR-7 ServerRequestInterface

<?php
use Procurios\Json\JsonRpc\Server;

$Server = new Server(new MySubjectClass);

// Use the current Psr\Http\Message\ServerRequestInterface implementation in your application
$Request = MyRequestSource::getRequest();

// Create an empty implementation of Psr\Http\Message\ResponseInterface
$BaseResponse = MyResponseFactory::createResponse();

$Response = $Server->handleServerRequest($Request, $BaseResponse);

MyResponseEmitter::emit($Response);

Limit subject to an interface

<?php
use Procurios\Json\JsonRpc\Server;

$Server = new Server(new MySubjectClass, MyInterface::class);

// Only the method foo will be available in this server, since bar is not part of the interface