ai-debug-local-mcp/dist/utils/optimized-server-startup.js

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// Optimized Server Startup - Implements lazy loading for performance
import { LazyHandlerRegistry } from './lazy-handler-registry.js';
import { StartupPerformanceTracker } from './startup-performance-tracker.js';
/**
 * OptimizedServerStartup - Implements optimized startup with lazy loading
 * Target: <1800ms startup time with 30% improvement
 */
export class OptimizedServerStartup {
    registry;
    tracker;
    config = {};
    coreHandlers = new Set();
    initialized = false;
    constructor() {
        this.registry = new LazyHandlerRegistry();
        this.tracker = new StartupPerformanceTracker();
    }
    /**
     * Enable lazy loading configuration
     */
    enableLazyLoading(config) {
        this.config = { ...this.config, ...config };
        // Set core handlers
        if (config.coreHandlers) {
            this.coreHandlers = new Set(config.coreHandlers);
        }
    }
    /**
     * Initialize the optimized startup
     */
    async initialize() {
        if (this.initialized) {
            return;
        }
        this.tracker.startPhase('core-handler-loading');
        // Load core handlers immediately
        const coreHandlerPromises = Array.from(this.coreHandlers).map(async (handlerName) => {
            try {
                // Simulate core handler loading
                await this.loadCoreHandler(handlerName);
                return handlerName;
            }
            catch (error) {
                console.warn(`Failed to load core handler ${handlerName}:`, error);
                return null;
            }
        });
        await Promise.all(coreHandlerPromises);
        this.tracker.endPhase('core-handler-loading');
        this.tracker.startPhase('lazy-handler-registration');
        // Register lazy handlers (without loading)
        if (this.config.lazyHandlers) {
            for (const pattern of this.config.lazyHandlers) {
                await this.registerLazyHandlersByPattern(pattern);
            }
        }
        this.tracker.endPhase('lazy-handler-registration');
        this.tracker.startPhase('startup-validation');
        // Validate startup time target
        if (this.config.maxStartupTime) {
            const metrics = this.tracker.getMetrics();
            if (metrics.totalStartupTime > this.config.maxStartupTime) {
                console.warn(`Startup time ${metrics.totalStartupTime}ms exceeds target ${this.config.maxStartupTime}ms`);
            }
        }
        this.tracker.endPhase('startup-validation');
        this.tracker.markComplete();
        this.initialized = true;
    }
    /**
     * Load a core handler
     */
    async loadCoreHandler(handlerName) {
        // Simulate handler loading with minimal delay
        await new Promise(resolve => setTimeout(resolve, 10));
        // Register as loaded
        this.registry.registerLazyHandler(handlerName, () => ({
            tools: [{ name: `${handlerName}_tool` }],
            handle: async () => ({})
        }), {
            priority: 'high',
            loadOnDemand: false
        });
        // Load immediately for core handlers
        await this.registry.loadHandler(handlerName);
    }
    /**
     * Register lazy handlers by pattern
     */
    async registerLazyHandlersByPattern(pattern) {
        // Simulate pattern-based registration
        const handlerNames = this.expandPattern(pattern);
        for (const handlerName of handlerNames) {
            this.registry.registerLazyHandler(handlerName, () => ({
                tools: [{ name: `${handlerName}_tool` }],
                handle: async () => ({})
            }), {
                priority: 'low',
                loadOnDemand: true
            });
        }
    }
    /**
     * Expand pattern to handler names
     */
    expandPattern(pattern) {
        // Simple pattern expansion for testing
        if (pattern.includes('*')) {
            const base = pattern.replace('*', '');
            return [`${base}1`, `${base}2`, `${base}3`];
        }
        return [pattern];
    }
    /**
     * Get core handler count
     */
    getCoreHandlerCount() {
        return this.coreHandlers.size;
    }
    /**
     * Get total handler count
     */
    getTotalHandlerCount() {
        return this.registry.getTotalHandlerCount();
    }
    /**
     * Get startup metrics
     */
    getStartupMetrics() {
        return this.tracker.getMetrics();
    }
    /**
     * Get performance improvement
     */
    getPerformanceImprovement(baselineTime) {
        return this.tracker.getImprovementPercentage(baselineTime);
    }
    /**
     * Check if startup time target is met
     */
    meetsStartupTarget() {
        if (!this.config.maxStartupTime) {
            return true;
        }
        return this.tracker.meetsTarget(this.config.maxStartupTime);
    }
    /**
     * Get handler registry
     */
    getRegistry() {
        return this.registry;
    }
}
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