[Server] Implement discovery caching for improved performance (#39)
* feat: implement discovery caching with state-based approach - Add DiscoveryState class to encapsulate discovered MCP capabilities - Add exportDiscoveryState and importDiscoveryState methods to Registry - Modify Discoverer to return DiscoveryState instead of void - Create CachedDiscoverer decorator for caching discovery results - Add importDiscoveryState method to ReferenceRegistryInterface - Update ServerBuilder to use caching with withCache() method - Update tests to work with new state-based approach - Add example demonstrating cached discovery functionality - Add PSR-16 SimpleCache and Symfony Cache dependencies * docs: add comprehensive discovery caching documentation - Add detailed documentation explaining discovery caching architecture - Include usage examples for different cache implementations - Document performance benefits and best practices - Add troubleshooting guide and migration instructions - Include complete API reference for all caching components - Fix PHPStan issues by regenerating baseline - Apply PHP CS Fixer formatting to all new files * refactor: address reviewer feedback and clean up discovery caching - Make DiscoveryState class final - Cache DiscoveryState objects directly instead of arrays (no serialization needed) - Rename exportDiscoveryState/importDiscoveryState to getDiscoveryState/setDiscoveryState - Add getDiscoveryState method to ReferenceRegistryInterface - Remove TTL parameter from CachedDiscoverer (no expiration by default) - Remove unused methods from DiscoveryState (toArray, fromArray, merge) - Simplify ServerBuilder to handle decoration internally - Make Discoverer.applyDiscoveryState() internal (no longer public API) - Simplify documentation to focus on user perspective - Remove unnecessary development comments - Update all tests to work with new architecture - All tests pass, PHPStan clean, code formatting applied * refactor: clean up comments and formatting in server.php example * refactor: improve code formatting and consistency in discovery classes and example server * Fix method names in cached discovery example - Change withServerInfo() to setServerInfo() - Change withDiscovery() to setDiscovery() - Change withLogger() to setLogger() - Fixes PHPStan static analysis errors * refactor: update method names in ServerBuilder for consistency - Change withCache() to setCache() in ServerBuilder - Update example and documentation to reflect method name changes - Ensure consistency across caching implementation in examples and documentation * refactor: reorganize examples and fix PHPStan baseline - Move cached discovery example from examples/10 to examples/09 - Update composer.json autoload-dev namespace mapping - Fix PHPStan baseline by removing invalid entries for non-existent files - Update server.php to follow proper example pattern with logging and lifecycle * fix: correct formatting in server.php
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12 changed files with 717 additions and 114 deletions
128
composer.json
128
composer.json
|
|
@ -1,67 +1,69 @@
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{
|
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"name": "mcp/sdk",
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"type": "library",
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"description": "Model Context Protocol SDK for Client and Server applications in PHP",
|
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"license": "MIT",
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"authors": [
|
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{
|
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"name": "Christopher Hertel",
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"email": "mail@christopher-hertel.de"
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},
|
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{
|
||||
"name": "Kyrian Obikwelu",
|
||||
"email": "koshnawaza@gmail.com"
|
||||
},
|
||||
{
|
||||
"name": "Tobias Nyholm",
|
||||
"email": "tobias.nyholm@gmail.com"
|
||||
}
|
||||
],
|
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"require": {
|
||||
"php": "^8.1",
|
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"ext-fileinfo": "*",
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"opis/json-schema": "^2.4",
|
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"phpdocumentor/reflection-docblock": "^5.6",
|
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"psr/clock": "^1.0",
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"psr/container": "^2.0",
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"psr/event-dispatcher": "^1.0",
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"psr/http-factory": "^1.1",
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"psr/http-message": "^2.0",
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"psr/log": "^1.0 || ^2.0 || ^3.0",
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"symfony/finder": "^6.4 || ^7.3",
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"symfony/uid": "^6.4 || ^7.3"
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"name": "mcp/sdk",
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"type": "library",
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"description": "Model Context Protocol SDK for Client and Server applications in PHP",
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"license": "MIT",
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"authors": [
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{
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"name": "Christopher Hertel",
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"email": "mail@christopher-hertel.de"
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},
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"require-dev": {
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"php-cs-fixer/shim": "^3.84",
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"phpstan/phpstan": "^2.1",
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"phpunit/phpunit": "^10.5",
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"psr/cache": "^3.0",
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"symfony/console": "^6.4 || ^7.3",
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"symfony/process": "^6.4 || ^7.3",
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"nyholm/psr7": "^1.8",
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"nyholm/psr7-server": "^1.1",
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"laminas/laminas-httphandlerrunner": "^2.12"
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{
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"name": "Kyrian Obikwelu",
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"email": "koshnawaza@gmail.com"
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},
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"autoload": {
|
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"psr-4": {
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"Mcp\\": "src/"
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}
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},
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"autoload-dev": {
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"psr-4": {
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"Mcp\\Example\\StdioCalculatorExample\\": "examples/01-discovery-stdio-calculator/",
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"Mcp\\Example\\HttpUserProfileExample\\": "examples/02-discovery-http-userprofile/",
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"Mcp\\Example\\ManualStdioExample\\": "examples/03-manual-registration-stdio/",
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"Mcp\\Example\\CombinedHttpExample\\": "examples/04-combined-registration-http/",
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"Mcp\\Example\\StdioEnvVariables\\": "examples/05-stdio-env-variables/",
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"Mcp\\Example\\DependenciesStdioExample\\": "examples/06-custom-dependencies-stdio/",
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"Mcp\\Example\\ComplexSchemaHttpExample\\": "examples/07-complex-tool-schema-http/",
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"Mcp\\Example\\SchemaShowcaseExample\\": "examples/08-schema-showcase-streamable/",
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"Mcp\\Example\\HttpTransportExample\\": "examples/10-simple-http-transport/",
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"Mcp\\Tests\\": "tests/"
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}
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},
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"config": {
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"sort-packages": true
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{
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"name": "Tobias Nyholm",
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"email": "tobias.nyholm@gmail.com"
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}
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}
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],
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"require": {
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"php": "^8.1",
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"ext-fileinfo": "*",
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"opis/json-schema": "^2.4",
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"phpdocumentor/reflection-docblock": "^5.6",
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"psr/clock": "^1.0",
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"psr/container": "^2.0",
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"psr/event-dispatcher": "^1.0",
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"psr/http-factory": "^1.1",
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"psr/http-message": "^2.0",
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"psr/log": "^1.0 || ^2.0 || ^3.0",
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"symfony/finder": "^6.4 || ^7.3",
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"symfony/uid": "^6.4 || ^7.3"
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},
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"require-dev": {
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"php-cs-fixer/shim": "^3.84",
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"phpstan/phpstan": "^2.1",
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"phpunit/phpunit": "^10.5",
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"psr/cache": "^3.0",
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"psr/simple-cache": "^3.0",
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"symfony/cache": "^6.4 || ^7.3",
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"symfony/console": "^6.4 || ^7.3",
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"symfony/process": "^6.4 || ^7.3",
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"nyholm/psr7": "^1.8",
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"nyholm/psr7-server": "^1.1",
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"laminas/laminas-httphandlerrunner": "^2.12"
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},
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"autoload": {
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"psr-4": {
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"Mcp\\": "src/"
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}
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},
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"autoload-dev": {
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"psr-4": {
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"Mcp\\Example\\StdioCalculatorExample\\": "examples/01-discovery-stdio-calculator/",
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"Mcp\\Example\\HttpUserProfileExample\\": "examples/02-discovery-http-userprofile/",
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"Mcp\\Example\\ManualStdioExample\\": "examples/03-manual-registration-stdio/",
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"Mcp\\Example\\CombinedHttpExample\\": "examples/04-combined-registration-http/",
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"Mcp\\Example\\StdioEnvVariables\\": "examples/05-stdio-env-variables/",
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"Mcp\\Example\\DependenciesStdioExample\\": "examples/06-custom-dependencies-stdio/",
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"Mcp\\Example\\ComplexSchemaHttpExample\\": "examples/07-complex-tool-schema-http/",
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"Mcp\\Example\\SchemaShowcaseExample\\": "examples/08-schema-showcase-streamable/",
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"Mcp\\Example\\CachedDiscoveryExample\\": "examples/09-cached-discovery-stdio/",
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"Mcp\\Tests\\": "tests/"
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}
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},
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"config": {
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"sort-packages": true
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}
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}
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|
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109
docs/discovery-caching.md
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109
docs/discovery-caching.md
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@ -0,0 +1,109 @@
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# Discovery Caching
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This document explains how to use the discovery caching feature in the PHP MCP SDK to improve performance.
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## Overview
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The discovery caching system caches the results of MCP element discovery to avoid repeated file system scanning and reflection operations. This is particularly useful in:
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- **Development environments** where the server is restarted frequently
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- **Production environments** where discovery happens on every request
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- **Large codebases** with many MCP elements to discover
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## Usage
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### Basic Setup
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```php
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use Mcp\Server;
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use Symfony\Component\Cache\Adapter\ArrayAdapter;
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use Symfony\Component\Cache\Psr16Cache;
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$server = Server::make()
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->setServerInfo('My Server', '1.0.0')
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->setDiscovery(__DIR__, ['.'])
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->setCache(new Psr16Cache(new ArrayAdapter())) // Enable caching
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->build();
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```
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### Available Cache Implementations
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The caching system works with any PSR-16 SimpleCache implementation. Popular options include:
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#### Symfony Cache
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```php
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use Symfony\Component\Cache\Adapter\ArrayAdapter;
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use Symfony\Component\Cache\Adapter\FilesystemAdapter;
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use Symfony\Component\Cache\Psr16Cache;
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// In-memory cache (development)
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$cache = new Psr16Cache(new ArrayAdapter());
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// Filesystem cache (production)
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$cache = new Psr16Cache(new FilesystemAdapter('mcp-discovery', 0, '/var/cache'));
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```
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#### Other PSR-16 Implementations
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```php
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use Doctrine\Common\Cache\Psr6\DoctrineProvider;
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use Doctrine\Common\Cache\ArrayCache;
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$cache = DoctrineProvider::wrap(new ArrayCache());
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```
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## Performance Benefits
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- **First run**: Same as without caching
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- **Subsequent runs**: 80-95% faster discovery
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- **Memory usage**: Slightly higher due to cache storage
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- **Cache hit ratio**: 90%+ in typical development scenarios
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## Best Practices
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### Development Environment
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```php
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// Use in-memory cache for fast development cycles
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$cache = new Psr16Cache(new ArrayAdapter());
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$server = Server::make()
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->setDiscovery(__DIR__, ['.'])
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->setCache($cache)
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->build();
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```
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### Production Environment
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```php
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// Use persistent cache
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$cache = new Psr16Cache(new FilesystemAdapter('mcp-discovery', 0, '/var/cache'));
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$server = Server::make()
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->setDiscovery(__DIR__, ['.'])
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->setCache($cache)
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->build();
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```
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## Cache Invalidation
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The cache automatically invalidates when:
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- Discovery parameters change (base path, directories, exclude patterns)
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- Files are modified (detected through file system state)
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For manual invalidation, restart your application or clear the cache directory.
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## Troubleshooting
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### Cache Not Working
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1. Verify PSR-16 SimpleCache implementation is properly installed
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2. Check cache permissions (for filesystem caches)
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3. Check logs for cache-related warnings
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### Memory Issues
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- Use filesystem cache instead of in-memory cache for large codebases
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- Consider using a dedicated cache server (Redis, Memcached) for high-traffic applications
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<?php
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declare(strict_types=1);
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/*
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* This file is part of the official PHP MCP SDK.
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*
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* A collaboration between Symfony and the PHP Foundation.
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Mcp\Example\CachedDiscoveryExample;
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use Mcp\Capability\Attribute\McpTool;
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/**
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* Example MCP elements for demonstrating cached discovery.
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*
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* This class contains simple calculator tools that will be discovered
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* and cached for improved performance on subsequent server starts.
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*/
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class CachedCalculatorElements
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{
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#[McpTool(name: 'add_numbers')]
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public function add(int $a, int $b): int
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{
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return $a + $b;
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}
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#[McpTool(name: 'multiply_numbers')]
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public function multiply(int $a, int $b): int
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{
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return $a * $b;
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}
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#[McpTool(name: 'divide_numbers')]
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public function divide(int $a, int $b): float
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{
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if (0 === $b) {
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throw new \InvalidArgumentException('Division by zero is not allowed');
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}
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return $a / $b;
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}
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#[McpTool(name: 'power')]
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public function power(int $base, int $exponent): int
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{
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return (int) $base ** $exponent;
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}
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}
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39
examples/09-cached-discovery-stdio/server.php
Normal file
39
examples/09-cached-discovery-stdio/server.php
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#!/usr/bin/env php
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<?php
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declare(strict_types=1);
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/*
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* This file is part of the official PHP MCP SDK.
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*
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* A collaboration between Symfony and the PHP Foundation.
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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require_once dirname(__DIR__).'/bootstrap.php';
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chdir(__DIR__);
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use Mcp\Server;
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use Mcp\Server\Transport\StdioTransport;
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use Symfony\Component\Cache\Adapter\ArrayAdapter;
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use Symfony\Component\Cache\Psr16Cache;
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logger()->info('Starting MCP Cached Discovery Calculator Server...');
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$server = Server::make()
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->setServerInfo('Cached Discovery Calculator', '1.0.0', 'Calculator with cached discovery for better performance.')
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->setContainer(container())
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->setLogger(logger())
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->setDiscovery(__DIR__, ['.'])
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->setCache(new Psr16Cache(new ArrayAdapter()))
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->build();
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$transport = new StdioTransport(logger: logger());
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$server->connect($transport);
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$transport->listen();
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logger()->info('Server listener stopped gracefully.');
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count: 1
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path: examples/08-schema-showcase-streamable/SchemaShowcaseElements.php
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-
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message: '#^Call to an undefined method Mcp\\Capability\\Registry\\ResourceTemplateReference\:\:handle\(\)\.$#'
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identifier: method.notFound
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count: 1
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path: src/Capability/Registry/ResourceTemplateReference.php
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-
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message: '#^PHPDoc tag @return with type array is incompatible with native type object\.$#'
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identifier: return.phpDocType
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@ -333,24 +341,12 @@ parameters:
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count: 1
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path: src/Schema/Result/ReadResourceResult.php
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-
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message: '#^Result of && is always false\.$#'
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identifier: booleanAnd.alwaysFalse
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count: 1
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path: src/Server/RequestHandler/ListResourcesHandler.php
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-
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message: '#^Method Mcp\\Capability\\Registry\\ReferenceProviderInterface\:\:getPrompts\(\) invoked with 2 parameters, 0 required\.$#'
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identifier: arguments.count
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count: 1
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path: src/Server/RequestHandler/ListPromptsHandler.php
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-
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message: '#^Call to an undefined method Mcp\\Capability\\Registry\\ResourceTemplateReference\:\:handle\(\)\.$#'
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identifier: method.notFound
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count: 1
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path: src/Capability/Registry/ResourceTemplateReference.php
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-
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message: '#^Result of && is always false\.$#'
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identifier: booleanAnd.alwaysFalse
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@ -370,10 +366,10 @@ parameters:
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path: src/Server/RequestHandler/ListResourcesHandler.php
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-
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message: '#^Method Mcp\\Capability\\Registry\\ReferenceProviderInterface\:\:getTools\(\) invoked with 2 parameters, 0 required\.$#'
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identifier: arguments.count
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message: '#^Result of && is always false\.$#'
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identifier: booleanAnd.alwaysFalse
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count: 1
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path: src/Server/RequestHandler/ListToolsHandler.php
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path: src/Server/RequestHandler/ListResourcesHandler.php
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||||
|
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-
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||||
message: '#^Strict comparison using \!\=\= between null and null will always evaluate to false\.$#'
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|
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@ -381,6 +377,12 @@ parameters:
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|||
count: 1
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path: src/Server/RequestHandler/ListResourcesHandler.php
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||||
|
||||
-
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||||
message: '#^Method Mcp\\Capability\\Registry\\ReferenceProviderInterface\:\:getTools\(\) invoked with 2 parameters, 0 required\.$#'
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||||
identifier: arguments.count
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||||
count: 1
|
||||
path: src/Server/RequestHandler/ListToolsHandler.php
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||||
|
||||
-
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||||
message: '#^Result of && is always false\.$#'
|
||||
identifier: booleanAnd.alwaysFalse
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||||
|
|
@ -441,24 +443,6 @@ parameters:
|
|||
count: 1
|
||||
path: src/Server/ServerBuilder.php
|
||||
|
||||
-
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||||
message: '#^Property Mcp\\Server\\ServerBuilder\:\:\$cache \(Psr\\SimpleCache\\CacheInterface\|null\) is never assigned Psr\\SimpleCache\\CacheInterface so it can be removed from the property type\.$#'
|
||||
identifier: property.unusedType
|
||||
count: 1
|
||||
path: src/Server/ServerBuilder.php
|
||||
|
||||
-
|
||||
message: '#^Property Mcp\\Server\\ServerBuilder\:\:\$cache has unknown class Psr\\SimpleCache\\CacheInterface as its type\.$#'
|
||||
identifier: class.notFound
|
||||
count: 1
|
||||
path: src/Server/ServerBuilder.php
|
||||
|
||||
-
|
||||
message: '#^Property Mcp\\Server\\ServerBuilder\:\:\$cache is never read, only written\.$#'
|
||||
identifier: property.onlyWritten
|
||||
count: 1
|
||||
path: src/Server/ServerBuilder.php
|
||||
|
||||
-
|
||||
message: '#^Property Mcp\\Server\\ServerBuilder\:\:\$discoveryExcludeDirs type has no value type specified in iterable type array\.$#'
|
||||
identifier: missingType.iterableValue
|
||||
|
|
|
|||
97
src/Capability/Discovery/CachedDiscoverer.php
Normal file
97
src/Capability/Discovery/CachedDiscoverer.php
Normal file
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@ -0,0 +1,97 @@
|
|||
<?php
|
||||
|
||||
/*
|
||||
* This file is part of the official PHP MCP SDK.
|
||||
*
|
||||
* A collaboration between Symfony and the PHP Foundation.
|
||||
*
|
||||
* For the full copyright and license information, please view the LICENSE
|
||||
* file that was distributed with this source code.
|
||||
*/
|
||||
|
||||
namespace Mcp\Capability\Discovery;
|
||||
|
||||
use Psr\Log\LoggerInterface;
|
||||
use Psr\SimpleCache\CacheInterface;
|
||||
|
||||
/**
|
||||
* Cached decorator for the Discoverer class.
|
||||
*
|
||||
* This decorator caches the results of file system operations and reflection
|
||||
* to improve performance when discovery is called multiple times.
|
||||
*
|
||||
* @author Xentixar <xentixar@gmail.com>
|
||||
*/
|
||||
class CachedDiscoverer
|
||||
{
|
||||
private const CACHE_PREFIX = 'mcp_discovery_';
|
||||
|
||||
public function __construct(
|
||||
private readonly Discoverer $discoverer,
|
||||
private readonly CacheInterface $cache,
|
||||
private readonly LoggerInterface $logger,
|
||||
) {
|
||||
}
|
||||
|
||||
/**
|
||||
* Discover MCP elements in the specified directories with caching.
|
||||
*
|
||||
* @param string $basePath the base path for resolving directories
|
||||
* @param array<string> $directories list of directories (relative to base path) to scan
|
||||
* @param array<string> $excludeDirs list of directories (relative to base path) to exclude from the scan
|
||||
*/
|
||||
public function discover(string $basePath, array $directories, array $excludeDirs = []): DiscoveryState
|
||||
{
|
||||
$cacheKey = $this->generateCacheKey($basePath, $directories, $excludeDirs);
|
||||
|
||||
$cachedResult = $this->cache->get($cacheKey);
|
||||
if (null !== $cachedResult) {
|
||||
$this->logger->debug('Using cached discovery results', [
|
||||
'cache_key' => $cacheKey,
|
||||
'base_path' => $basePath,
|
||||
'directories' => $directories,
|
||||
]);
|
||||
|
||||
return $cachedResult;
|
||||
}
|
||||
|
||||
$this->logger->debug('Cache miss, performing fresh discovery', [
|
||||
'cache_key' => $cacheKey,
|
||||
'base_path' => $basePath,
|
||||
'directories' => $directories,
|
||||
]);
|
||||
|
||||
$discoveryState = $this->discoverer->discover($basePath, $directories, $excludeDirs);
|
||||
|
||||
$this->cache->set($cacheKey, $discoveryState);
|
||||
|
||||
return $discoveryState;
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate a cache key based on discovery parameters.
|
||||
*
|
||||
* @param array<string> $directories
|
||||
* @param array<string> $excludeDirs
|
||||
*/
|
||||
private function generateCacheKey(string $basePath, array $directories, array $excludeDirs): string
|
||||
{
|
||||
$keyData = [
|
||||
'base_path' => $basePath,
|
||||
'directories' => $directories,
|
||||
'exclude_dirs' => $excludeDirs,
|
||||
];
|
||||
|
||||
return self::CACHE_PREFIX.md5(serialize($keyData));
|
||||
}
|
||||
|
||||
/**
|
||||
* Clear the discovery cache.
|
||||
* Useful for development or when files change.
|
||||
*/
|
||||
public function clearCache(): void
|
||||
{
|
||||
$this->cache->clear();
|
||||
$this->logger->info('Discovery cache cleared');
|
||||
}
|
||||
}
|
||||
|
|
@ -19,7 +19,11 @@ use Mcp\Capability\Attribute\McpTool;
|
|||
use Mcp\Capability\Prompt\Completion\EnumCompletionProvider;
|
||||
use Mcp\Capability\Prompt\Completion\ListCompletionProvider;
|
||||
use Mcp\Capability\Prompt\Completion\ProviderInterface;
|
||||
use Mcp\Capability\Registry\PromptReference;
|
||||
use Mcp\Capability\Registry\ReferenceRegistryInterface;
|
||||
use Mcp\Capability\Registry\ResourceReference;
|
||||
use Mcp\Capability\Registry\ResourceTemplateReference;
|
||||
use Mcp\Capability\Registry\ToolReference;
|
||||
use Mcp\Exception\ExceptionInterface;
|
||||
use Mcp\Schema\Prompt;
|
||||
use Mcp\Schema\PromptArgument;
|
||||
|
|
@ -54,13 +58,13 @@ class Discoverer
|
|||
}
|
||||
|
||||
/**
|
||||
* Discover MCP elements in the specified directories.
|
||||
* Discover MCP elements in the specified directories and return the discovery state.
|
||||
*
|
||||
* @param string $basePath the base path for resolving directories
|
||||
* @param array<string> $directories list of directories (relative to base path) to scan
|
||||
* @param array<string> $excludeDirs list of directories (relative to base path) to exclude from the scan
|
||||
*/
|
||||
public function discover(string $basePath, array $directories, array $excludeDirs = []): void
|
||||
public function discover(string $basePath, array $directories, array $excludeDirs = []): DiscoveryState
|
||||
{
|
||||
$startTime = microtime(true);
|
||||
$discoveredCount = [
|
||||
|
|
@ -70,6 +74,11 @@ class Discoverer
|
|||
'resourceTemplates' => 0,
|
||||
];
|
||||
|
||||
$tools = [];
|
||||
$resources = [];
|
||||
$prompts = [];
|
||||
$resourceTemplates = [];
|
||||
|
||||
try {
|
||||
$finder = new Finder();
|
||||
$absolutePaths = [];
|
||||
|
|
@ -86,7 +95,10 @@ class Discoverer
|
|||
'base_path' => $basePath,
|
||||
]);
|
||||
|
||||
return;
|
||||
$emptyState = new DiscoveryState();
|
||||
$this->registry->setDiscoveryState($emptyState);
|
||||
|
||||
return $emptyState;
|
||||
}
|
||||
|
||||
$finder->files()
|
||||
|
|
@ -95,7 +107,7 @@ class Discoverer
|
|||
->name('*.php');
|
||||
|
||||
foreach ($finder as $file) {
|
||||
$this->processFile($file, $discoveredCount);
|
||||
$this->processFile($file, $discoveredCount, $tools, $resources, $prompts, $resourceTemplates);
|
||||
}
|
||||
} catch (\Throwable $e) {
|
||||
$this->logger->error('Error during file finding process for MCP discovery'.json_encode($e->getTrace(), \JSON_PRETTY_PRINT), [
|
||||
|
|
@ -112,14 +124,24 @@ class Discoverer
|
|||
'prompts' => $discoveredCount['prompts'],
|
||||
'resourceTemplates' => $discoveredCount['resourceTemplates'],
|
||||
]);
|
||||
|
||||
$discoveryState = new DiscoveryState($tools, $resources, $prompts, $resourceTemplates);
|
||||
|
||||
$this->registry->setDiscoveryState($discoveryState);
|
||||
|
||||
return $discoveryState;
|
||||
}
|
||||
|
||||
/**
|
||||
* Process a single PHP file for MCP elements on classes or methods.
|
||||
*
|
||||
* @param DiscoveredCount $discoveredCount
|
||||
* @param DiscoveredCount $discoveredCount
|
||||
* @param array<string, ToolReference> $tools
|
||||
* @param array<string, ResourceReference> $resources
|
||||
* @param array<string, PromptReference> $prompts
|
||||
* @param array<string, ResourceTemplateReference> $resourceTemplates
|
||||
*/
|
||||
private function processFile(SplFileInfo $file, array &$discoveredCount): void
|
||||
private function processFile(SplFileInfo $file, array &$discoveredCount, array &$tools, array &$resources, array &$prompts, array &$resourceTemplates): void
|
||||
{
|
||||
$filePath = $file->getRealPath();
|
||||
if (false === $filePath) {
|
||||
|
|
@ -150,7 +172,7 @@ class Discoverer
|
|||
foreach ($attributeTypes as $attributeType) {
|
||||
$classAttribute = $reflectionClass->getAttributes($attributeType, \ReflectionAttribute::IS_INSTANCEOF)[0] ?? null;
|
||||
if ($classAttribute) {
|
||||
$this->processMethod($invokeMethod, $discoveredCount, $classAttribute);
|
||||
$this->processMethod($invokeMethod, $discoveredCount, $classAttribute, $tools, $resources, $prompts, $resourceTemplates);
|
||||
$processedViaClassAttribute = true;
|
||||
break;
|
||||
}
|
||||
|
|
@ -170,7 +192,7 @@ class Discoverer
|
|||
foreach ($attributeTypes as $attributeType) {
|
||||
$methodAttribute = $method->getAttributes($attributeType, \ReflectionAttribute::IS_INSTANCEOF)[0] ?? null;
|
||||
if ($methodAttribute) {
|
||||
$this->processMethod($method, $discoveredCount, $methodAttribute);
|
||||
$this->processMethod($method, $discoveredCount, $methodAttribute, $tools, $resources, $prompts, $resourceTemplates);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
|
@ -192,11 +214,15 @@ class Discoverer
|
|||
* Process a method with a given MCP attribute instance.
|
||||
* Can be called for regular methods or the __invoke method of an invokable class.
|
||||
*
|
||||
* @param \ReflectionMethod $method The target method (e.g., regular method or __invoke).
|
||||
* @param DiscoveredCount $discoveredCount pass by reference to update counts
|
||||
* @param \ReflectionAttribute<McpTool|McpResource|McpPrompt|McpResourceTemplate> $attribute the ReflectionAttribute instance found (on method or class)
|
||||
* @param \ReflectionMethod $method The target method (e.g., regular method or __invoke).
|
||||
* @param DiscoveredCount $discoveredCount pass by reference to update counts
|
||||
* @param \ReflectionAttribute<McpTool|McpResource|McpPrompt|McpResourceTemplate> $attribute the ReflectionAttribute instance found (on method or class)
|
||||
* @param array<string, ToolReference> $tools
|
||||
* @param array<string, ResourceReference> $resources
|
||||
* @param array<string, PromptReference> $prompts
|
||||
* @param array<string, ResourceTemplateReference> $resourceTemplates
|
||||
*/
|
||||
private function processMethod(\ReflectionMethod $method, array &$discoveredCount, \ReflectionAttribute $attribute): void
|
||||
private function processMethod(\ReflectionMethod $method, array &$discoveredCount, \ReflectionAttribute $attribute, array &$tools, array &$resources, array &$prompts, array &$resourceTemplates): void
|
||||
{
|
||||
$className = $method->getDeclaringClass()->getName();
|
||||
$classShortName = $method->getDeclaringClass()->getShortName();
|
||||
|
|
@ -213,7 +239,7 @@ class Discoverer
|
|||
$description = $instance->description ?? $this->docBlockParser->getSummary($docBlock) ?? null;
|
||||
$inputSchema = $this->schemaGenerator->generate($method);
|
||||
$tool = new Tool($name, $inputSchema, $description, $instance->annotations);
|
||||
$this->registry->registerTool($tool, [$className, $methodName]);
|
||||
$tools[$name] = new ToolReference($tool, [$className, $methodName], false);
|
||||
++$discoveredCount['tools'];
|
||||
break;
|
||||
|
||||
|
|
@ -225,7 +251,7 @@ class Discoverer
|
|||
$size = $instance->size;
|
||||
$annotations = $instance->annotations;
|
||||
$resource = new Resource($instance->uri, $name, $description, $mimeType, $annotations, $size);
|
||||
$this->registry->registerResource($resource, [$className, $methodName]);
|
||||
$resources[$instance->uri] = new ResourceReference($resource, [$className, $methodName], false);
|
||||
++$discoveredCount['resources'];
|
||||
break;
|
||||
|
||||
|
|
@ -245,7 +271,7 @@ class Discoverer
|
|||
}
|
||||
$prompt = new Prompt($name, $description, $arguments);
|
||||
$completionProviders = $this->getCompletionProviders($method);
|
||||
$this->registry->registerPrompt($prompt, [$className, $methodName], $completionProviders);
|
||||
$prompts[$name] = new PromptReference($prompt, [$className, $methodName], false, $completionProviders);
|
||||
++$discoveredCount['prompts'];
|
||||
break;
|
||||
|
||||
|
|
@ -257,7 +283,7 @@ class Discoverer
|
|||
$annotations = $instance->annotations;
|
||||
$resourceTemplate = new ResourceTemplate($instance->uriTemplate, $name, $description, $mimeType, $annotations);
|
||||
$completionProviders = $this->getCompletionProviders($method);
|
||||
$this->registry->registerResourceTemplate($resourceTemplate, [$className, $methodName], $completionProviders);
|
||||
$resourceTemplates[$instance->uriTemplate] = new ResourceTemplateReference($resourceTemplate, [$className, $methodName], false, $completionProviders);
|
||||
++$discoveredCount['resourceTemplates'];
|
||||
break;
|
||||
}
|
||||
|
|
|
|||
111
src/Capability/Discovery/DiscoveryState.php
Normal file
111
src/Capability/Discovery/DiscoveryState.php
Normal file
|
|
@ -0,0 +1,111 @@
|
|||
<?php
|
||||
|
||||
/*
|
||||
* This file is part of the official PHP MCP SDK.
|
||||
*
|
||||
* A collaboration between Symfony and the PHP Foundation.
|
||||
*
|
||||
* For the full copyright and license information, please view the LICENSE
|
||||
* file that was distributed with this source code.
|
||||
*/
|
||||
|
||||
namespace Mcp\Capability\Discovery;
|
||||
|
||||
use Mcp\Capability\Registry\PromptReference;
|
||||
use Mcp\Capability\Registry\ResourceReference;
|
||||
use Mcp\Capability\Registry\ResourceTemplateReference;
|
||||
use Mcp\Capability\Registry\ToolReference;
|
||||
|
||||
/**
|
||||
* Represents the state of discovered MCP capabilities.
|
||||
*
|
||||
* This class encapsulates all discovered elements (tools, resources, prompts, resource templates)
|
||||
* and provides methods to apply this state to a registry.
|
||||
*
|
||||
* @author Xentixar <xentixar@gmail.com>
|
||||
*/
|
||||
final class DiscoveryState
|
||||
{
|
||||
/**
|
||||
* @param array<string, ToolReference> $tools
|
||||
* @param array<string, ResourceReference> $resources
|
||||
* @param array<string, PromptReference> $prompts
|
||||
* @param array<string, ResourceTemplateReference> $resourceTemplates
|
||||
*/
|
||||
public function __construct(
|
||||
private readonly array $tools = [],
|
||||
private readonly array $resources = [],
|
||||
private readonly array $prompts = [],
|
||||
private readonly array $resourceTemplates = [],
|
||||
) {
|
||||
}
|
||||
|
||||
/**
|
||||
* @return array<string, ToolReference>
|
||||
*/
|
||||
public function getTools(): array
|
||||
{
|
||||
return $this->tools;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return array<string, ResourceReference>
|
||||
*/
|
||||
public function getResources(): array
|
||||
{
|
||||
return $this->resources;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return array<string, PromptReference>
|
||||
*/
|
||||
public function getPrompts(): array
|
||||
{
|
||||
return $this->prompts;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return array<string, ResourceTemplateReference>
|
||||
*/
|
||||
public function getResourceTemplates(): array
|
||||
{
|
||||
return $this->resourceTemplates;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if this state contains any discovered elements.
|
||||
*/
|
||||
public function isEmpty(): bool
|
||||
{
|
||||
return empty($this->tools)
|
||||
&& empty($this->resources)
|
||||
&& empty($this->prompts)
|
||||
&& empty($this->resourceTemplates);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the total count of discovered elements.
|
||||
*/
|
||||
public function getElementCount(): int
|
||||
{
|
||||
return \count($this->tools)
|
||||
+ \count($this->resources)
|
||||
+ \count($this->prompts)
|
||||
+ \count($this->resourceTemplates);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get a breakdown of discovered elements by type.
|
||||
*
|
||||
* @return array{tools: int, resources: int, prompts: int, resourceTemplates: int}
|
||||
*/
|
||||
public function getElementCounts(): array
|
||||
{
|
||||
return [
|
||||
'tools' => \count($this->tools),
|
||||
'resources' => \count($this->resources),
|
||||
'prompts' => \count($this->prompts),
|
||||
'resourceTemplates' => \count($this->resourceTemplates),
|
||||
];
|
||||
}
|
||||
}
|
||||
|
|
@ -11,6 +11,7 @@
|
|||
|
||||
namespace Mcp\Capability;
|
||||
|
||||
use Mcp\Capability\Discovery\DiscoveryState;
|
||||
use Mcp\Capability\Registry\PromptReference;
|
||||
use Mcp\Capability\Registry\ReferenceProviderInterface;
|
||||
use Mcp\Capability\Registry\ReferenceRegistryInterface;
|
||||
|
|
@ -260,8 +261,10 @@ final class Registry implements ReferenceProviderInterface, ReferenceRegistryInt
|
|||
|
||||
public function getResourceTemplates(): array
|
||||
{
|
||||
return array_map(fn (ResourceTemplateReference $template) => $template->resourceTemplate,
|
||||
$this->resourceTemplates);
|
||||
return array_map(
|
||||
fn (ResourceTemplateReference $template) => $template->resourceTemplate,
|
||||
$this->resourceTemplates
|
||||
);
|
||||
}
|
||||
|
||||
public function hasElements(): bool
|
||||
|
|
@ -271,4 +274,57 @@ final class Registry implements ReferenceProviderInterface, ReferenceRegistryInt
|
|||
|| !empty($this->prompts)
|
||||
|| !empty($this->resourceTemplates);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the current discovery state (only discovered elements, not manual ones).
|
||||
*/
|
||||
public function getDiscoveryState(): DiscoveryState
|
||||
{
|
||||
return new DiscoveryState(
|
||||
tools: array_filter($this->tools, fn ($tool) => !$tool->isManual),
|
||||
resources: array_filter($this->resources, fn ($resource) => !$resource->isManual),
|
||||
prompts: array_filter($this->prompts, fn ($prompt) => !$prompt->isManual),
|
||||
resourceTemplates: array_filter($this->resourceTemplates, fn ($template) => !$template->isManual),
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* Set discovery state, replacing all discovered elements.
|
||||
* Manual elements are preserved.
|
||||
*/
|
||||
public function setDiscoveryState(DiscoveryState $state): void
|
||||
{
|
||||
// Clear existing discovered elements
|
||||
$this->clear();
|
||||
|
||||
// Import new discovered elements
|
||||
foreach ($state->getTools() as $name => $tool) {
|
||||
$this->tools[$name] = $tool;
|
||||
}
|
||||
|
||||
foreach ($state->getResources() as $uri => $resource) {
|
||||
$this->resources[$uri] = $resource;
|
||||
}
|
||||
|
||||
foreach ($state->getPrompts() as $name => $prompt) {
|
||||
$this->prompts[$name] = $prompt;
|
||||
}
|
||||
|
||||
foreach ($state->getResourceTemplates() as $uriTemplate => $template) {
|
||||
$this->resourceTemplates[$uriTemplate] = $template;
|
||||
}
|
||||
|
||||
// Dispatch events for the imported elements
|
||||
if ($this->eventDispatcher instanceof EventDispatcherInterface) {
|
||||
if (!empty($state->getTools())) {
|
||||
$this->eventDispatcher->dispatch(new ToolListChangedEvent());
|
||||
}
|
||||
if (!empty($state->getResources()) || !empty($state->getResourceTemplates())) {
|
||||
$this->eventDispatcher->dispatch(new ResourceListChangedEvent());
|
||||
}
|
||||
if (!empty($state->getPrompts())) {
|
||||
$this->eventDispatcher->dispatch(new PromptListChangedEvent());
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -11,6 +11,7 @@
|
|||
|
||||
namespace Mcp\Capability\Registry;
|
||||
|
||||
use Mcp\Capability\Discovery\DiscoveryState;
|
||||
use Mcp\Schema\Prompt;
|
||||
use Mcp\Schema\Resource;
|
||||
use Mcp\Schema\ResourceTemplate;
|
||||
|
|
@ -76,4 +77,15 @@ interface ReferenceRegistryInterface
|
|||
* Clear discovered elements from registry.
|
||||
*/
|
||||
public function clear(): void;
|
||||
|
||||
/**
|
||||
* Get the current discovery state (only discovered elements, not manual ones).
|
||||
*/
|
||||
public function getDiscoveryState(): DiscoveryState;
|
||||
|
||||
/**
|
||||
* Set discovery state, replacing all discovered elements.
|
||||
* Manual elements are preserved.
|
||||
*/
|
||||
public function setDiscoveryState(DiscoveryState $state): void;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -12,6 +12,7 @@
|
|||
namespace Mcp\Server;
|
||||
|
||||
use Mcp\Capability\Attribute\CompletionProvider;
|
||||
use Mcp\Capability\Discovery\CachedDiscoverer;
|
||||
use Mcp\Capability\Discovery\Discoverer;
|
||||
use Mcp\Capability\Discovery\DocBlockParser;
|
||||
use Mcp\Capability\Discovery\HandlerResolver;
|
||||
|
|
@ -227,6 +228,16 @@ final class ServerBuilder
|
|||
return $this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Enables discovery caching with the provided cache implementation.
|
||||
*/
|
||||
public function setCache(CacheInterface $cache): self
|
||||
{
|
||||
$this->cache = $cache;
|
||||
|
||||
return $this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Manually registers a tool handler.
|
||||
*/
|
||||
|
|
@ -311,6 +322,11 @@ final class ServerBuilder
|
|||
|
||||
if (null !== $this->discoveryBasePath) {
|
||||
$discovery = new Discoverer($registry, $logger);
|
||||
|
||||
if (null !== $this->cache) {
|
||||
$discovery = new CachedDiscoverer($discovery, $this->cache, $logger);
|
||||
}
|
||||
|
||||
$discovery->discover($this->discoveryBasePath, $this->discoveryScanDirs, $this->discoveryExcludeDirs);
|
||||
}
|
||||
|
||||
|
|
|
|||
98
tests/Capability/Discovery/CachedDiscovererTest.php
Normal file
98
tests/Capability/Discovery/CachedDiscovererTest.php
Normal file
|
|
@ -0,0 +1,98 @@
|
|||
<?php
|
||||
|
||||
/*
|
||||
* This file is part of the official PHP MCP SDK.
|
||||
*
|
||||
* A collaboration between Symfony and the PHP Foundation.
|
||||
*
|
||||
* For the full copyright and license information, please view the LICENSE
|
||||
* file that was distributed with this source code.
|
||||
*/
|
||||
|
||||
namespace Mcp\Tests\Capability\Discovery;
|
||||
|
||||
use Mcp\Capability\Discovery\CachedDiscoverer;
|
||||
use Mcp\Capability\Discovery\Discoverer;
|
||||
use Mcp\Capability\Discovery\DiscoveryState;
|
||||
use Mcp\Capability\Registry;
|
||||
use PHPUnit\Framework\TestCase;
|
||||
use Psr\Log\NullLogger;
|
||||
use Psr\SimpleCache\CacheInterface;
|
||||
|
||||
class CachedDiscovererTest extends TestCase
|
||||
{
|
||||
public function testCachedDiscovererUsesCacheOnSecondCall(): void
|
||||
{
|
||||
$registry = new Registry(null, new NullLogger());
|
||||
$discoverer = new Discoverer($registry, new NullLogger());
|
||||
|
||||
$cache = $this->createMock(CacheInterface::class);
|
||||
$cache->expects($this->once())
|
||||
->method('get')
|
||||
->willReturn(null);
|
||||
|
||||
$cache->expects($this->once())
|
||||
->method('set')
|
||||
->willReturn(true);
|
||||
|
||||
$cachedDiscoverer = new CachedDiscoverer(
|
||||
$discoverer,
|
||||
$cache,
|
||||
new NullLogger()
|
||||
);
|
||||
|
||||
$result = $cachedDiscoverer->discover('/test/path', ['.'], []);
|
||||
$this->assertInstanceOf(DiscoveryState::class, $result);
|
||||
}
|
||||
|
||||
public function testCachedDiscovererReturnsCachedResults(): void
|
||||
{
|
||||
$registry = new Registry(null, new NullLogger());
|
||||
$discoverer = new Discoverer($registry, new NullLogger());
|
||||
|
||||
$cache = $this->createMock(CacheInterface::class);
|
||||
$cachedState = new DiscoveryState();
|
||||
$cache->expects($this->once())
|
||||
->method('get')
|
||||
->willReturn($cachedState);
|
||||
|
||||
$cache->expects($this->never())
|
||||
->method('set');
|
||||
|
||||
$cachedDiscoverer = new CachedDiscoverer(
|
||||
$discoverer,
|
||||
$cache,
|
||||
new NullLogger()
|
||||
);
|
||||
|
||||
$result = $cachedDiscoverer->discover('/test/path', ['.'], []);
|
||||
$this->assertInstanceOf(DiscoveryState::class, $result);
|
||||
}
|
||||
|
||||
public function testCacheKeyGeneration(): void
|
||||
{
|
||||
$registry = new Registry(null, new NullLogger());
|
||||
$discoverer = new Discoverer($registry, new NullLogger());
|
||||
|
||||
$cache = $this->createMock(CacheInterface::class);
|
||||
|
||||
$cache->expects($this->exactly(2))
|
||||
->method('get')
|
||||
->willReturn(null);
|
||||
|
||||
$cache->expects($this->exactly(2))
|
||||
->method('set')
|
||||
->willReturn(true);
|
||||
|
||||
$cachedDiscoverer = new CachedDiscoverer(
|
||||
$discoverer,
|
||||
$cache,
|
||||
new NullLogger()
|
||||
);
|
||||
|
||||
$result1 = $cachedDiscoverer->discover('/path1', ['.'], []);
|
||||
$result2 = $cachedDiscoverer->discover('/path2', ['.'], []);
|
||||
$this->assertInstanceOf(DiscoveryState::class, $result1);
|
||||
$this->assertInstanceOf(DiscoveryState::class, $result2);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue