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This library provides core components compliant with the JSON-RPC 2.0 specification for building JSON-RPC servers and clients in PHP.

Table of Contents

• Features
• Installation
• Components
• Usage Example
• Advanced Usage
• Testing
• License

Features

• Fully compliant with JSON-RPC 2.0 specification
• Supports all JSON-RPC request types: single, batch, and notification
• Robust error handling for all standard JSON-RPC error types
• Flexible method resolution interfaces
• Clean object-oriented API

Installation

composer require tourze/json-rpc-core

Requirements:

• PHP 8.1+
• nesbot/carbon ^2.72 || ^3
• psr/log ^1|^2|^3
• symfony/dependency-injection ^7.3
• symfony/event-dispatcher-contracts ^3
• symfony/http-foundation ^7.3
• symfony/property-access ^7.3
• symfony/service-contracts ^3.6
• symfony/validator ^7.3
• tourze/arrayable 0.0.*
• tourze/backtrace-helper 0.1.*

Components

Models

• JsonRpcRequest - Represents a JSON-RPC request
• JsonRpcResponse - Represents a JSON-RPC response
• JsonRpcParams - Wraps request parameters
• JsonRpcCallRequest - Handles batch requests
• JsonRpcCallResponse - Handles batch responses

Domain Interfaces

• JsonRpcMethodInterface - Defines the interface for JSON-RPC methods
• JsonRpcMethodResolverInterface - Resolves method names to implementations
• JsonRpcMethodParamsValidatorInterface - Validates method parameters
• MethodWithValidatedParamsInterface - Methods with parameter validation
• MethodWithResultDocInterface - Methods with result documentation

Exceptions

• JsonRpcException - Base JSON-RPC exception
• JsonRpcParseErrorException - Parse error exception
• JsonRpcInvalidRequestException - Invalid request exception
• JsonRpcMethodNotFoundException - Method not found exception
• JsonRpcInvalidParamsException - Invalid params exception
• JsonRpcInternalErrorException - Internal error exception

Usage Example

Creating a JSON-RPC Method

use Tourze\JsonRPC\Core\Domain\JsonRpcMethodInterface;
use Tourze\JsonRPC\Core\Model\JsonRpcRequest;

class EchoMethod implements JsonRpcMethodInterface
{
 public function __invoke(JsonRpcRequest $request): mixed
 {
 return $request->getParams()->all();
 }

 public function execute(): array
 {
 return [];
 }
}

处理 JSON-RPC 请求

use Tourze\JsonRPC\Core\Exception\JsonRpcException;
use Tourze\JsonRPC\Core\Model\JsonRpcParams;
use Tourze\JsonRPC\Core\Model\JsonRpcRequest;
use Tourze\JsonRPC\Core\Model\JsonRpcResponse;

// 创建请求
$request = new JsonRpcRequest();
$request->setJsonrpc('2.0');
$request->setMethod('echo');
$request->setId('1');
$request->setParams(new JsonRpcParams(['message' => 'Hello, World!']));

// 创建方法实例
$method = new EchoMethod();

// 执行方法并获取响应
$response = new JsonRpcResponse();
$response->setJsonrpc('2.0');
$response->setId($request->getId());

try {
 $result = $method($request);
 $response->setResult($result);
} catch (JsonRpcException $e) {
 $response->setError($e);
} catch (\Throwable $e) {
 // 将普通异常包装为 JSON-RPC 异常
 $jsonRpcException = new JsonRpcException(-32000, $e->getMessage());
 $response->setError($jsonRpcException);
}

批量请求

通过 JsonRpcCallRequest 和 JsonRpcCallResponse 处理批量请求。详见单元测试中的示例。

Advanced Usage

Custom Parameter Validation

Use the BaseProcedure class for automatic parameter validation:

use Tourze\JsonRPC\Core\Procedure\BaseProcedure;
use Tourze\JsonRPC\Core\Attribute\MethodParam;
use Symfony\Component\Validator\Constraints as Assert;

class CalculatorMethod extends BaseProcedure
{
 #[MethodParam('First number')]
 #[Assert\Type('numeric')]
 #[Assert\NotBlank]
 public int $a;

 #[MethodParam('Second number')]
 #[Assert\Type('numeric')]
 #[Assert\NotBlank]
 public int $b;

 public function execute(): int
 {
 return $this->a + $this->b;
 }
}

Event-Driven Architecture

Listen to JSON-RPC events for logging and monitoring:

use Tourze\JsonRPC\Core\Event\BeforeMethodApplyEvent;
use Tourze\JsonRPC\Core\Event\AfterMethodApplyEvent;

// Before method execution
$dispatcher->addListener(BeforeMethodApplyEvent::class, function ($event) {
 $logger->info('Method called', [
 'method' => $event->getName(),
 'params' => $event->getParams()->all()
 ]);
});

// After method execution
$dispatcher->addListener(AfterMethodApplyEvent::class, function ($event) {
 $logger->info('Method completed', [
 'method' => $event->getName(),
 'result' => $event->getResult()
 ]);
});

Helper Classes for Complex Validation

The package includes helper classes for advanced parameter processing:

• TypeValidatorFactory: Creates type validators from reflection
• PropertyConstraintExtractor: Extracts validation constraints from properties
• ParameterProcessor: Handles parameter assignment and validation

Testing

vendor/bin/phpunit packages/json-rpc-core/tests

License

This project is licensed under the MIT License - see the LICENSE file for details.