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♻️ refactor: MCPManager for Scalability, Fix App-Level Detection, Add Lazy Connections (#8930)

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* feat: MCP Connection management overhaul - Making MCPManager manageable

Refactor the monolithic MCPManager into focused, single-responsibility classes:

• MCPServersRegistry: Server configuration discovery and metadata management
• UserConnectionManager: Manages user-level connections
• ConnectionsRepository: Low-level connection pool with lazy loading
• MCPConnectionFactory: Handles MCP connection creation with OAuth support

New Features:
• Lazy loading of app-level connections for horizontal scaling
• Automatic reconnection for app-level connections
• Enhanced OAuth detection with explicit requiresOAuth flag
• Centralized MCP configuration management

Bug Fixes:
• App-level connection detection in MCPManager.callTool
• MCP Connection Reinitialization route behavior

Optimizations:
• MCPConnection.isConnected() caching to reduce overhead
• Concurrent server metadata retrieval instead of sequential

This refactoring addresses scalability bottlenecks and improves reliability
while maintaining backward compatibility with existing configurations.

* feat: Enabled import order in eslint.

* # Moved tests to __tests__ folder
# added tests for MCPServersRegistry.ts

* # Add unit tests for ConnectionsRepository functionality

* # Add unit tests for MCPConnectionFactory functionality

* # Reorganize MCP connection tests and improve error handling

* # reordering imports

* # Update testPathIgnorePatterns in jest.config.mjs to exclude development TypeScript files

* # removed mcp/manager.ts
This commit is contained in:
Theo N. Truong 2025-08-13 09:45:06 -06:00 • committed by GitHub
parent 9dbf153489
commit 8780a78165
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32 changed files with 2571 additions and 1468 deletions
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57
eslint.config.mjs
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@ -2,11 +2,11 @@ import { fileURLToPath } from 'node:url';
import path from 'node:path';
import typescriptEslintEslintPlugin from '@typescript-eslint/eslint-plugin';
import { fixupConfigRules, fixupPluginRules } from '@eslint/compat';
// import perfectionist from 'eslint-plugin-perfectionist';
import perfectionist from 'eslint-plugin-perfectionist';
import reactHooks from 'eslint-plugin-react-hooks';
import prettier from 'eslint-plugin-prettier';
import tsParser from '@typescript-eslint/parser';
import importPlugin from 'eslint-plugin-import';
import prettier from 'eslint-plugin-prettier';
import { FlatCompat } from '@eslint/eslintrc';
import jsxA11Y from 'eslint-plugin-jsx-a11y';
import i18next from 'eslint-plugin-i18next';
@ -62,7 +62,7 @@ export default [
'jsx-a11y': fixupPluginRules(jsxA11Y),
'import/parsers': tsParser,
i18next,
// perfectionist,
perfectionist,
prettier: fixupPluginRules(prettier),
},
@ -140,32 +140,31 @@ export default [
'react/prop-types': 'off',
'react/display-name': 'off',
// 'perfectionist/sort-imports': [
// 'error',
// {
// type: 'line-length',
// order: 'desc',
// newlinesBetween: 'never',
// customGroups: {
// value: {
// react: ['^react$'],
// // react: ['^react$', '^fs', '^zod', '^path'],
// local: ['^(\\.{1,2}|~)/', '^librechat-data-provider'],
// },
// },
// groups: [
// 'react',
// 'builtin',
// 'external',
// ['builtin-type', 'external-type'],
// ['internal-type'],
// 'local',
// ['parent', 'sibling', 'index'],
// 'object',
// 'unknown',
// ],
// },
// ],
'perfectionist/sort-imports': [
'error',
{
type: 'line-length',
order: 'desc',
newlinesBetween: 'never',
customGroups: {
value: {
react: ['^react$'],
local: ['^(\\.{1,2}|~)/', '^librechat-data-provider'],
},
},
groups: [
'react',
'builtin',
'external',
['builtin-type', 'external-type'],
['internal-type'],
'local',
['parent', 'sibling', 'index'],
'object',
'unknown',
],
},
],
// 'perfectionist/sort-named-imports': [
// 'error',