Grafana MCP Server

import { z } from 'zod'; import { Config, ConfigSchema, ToolCategory } from './types.js'; /** * Parse environment variables and validate configuration */ function parseConfig(): Config { const env = process.env; // Parse disabled tools const disabledTools = env.GRAFANA_DISABLE_TOOLS ? env.GRAFANA_DISABLE_TOOLS.split(',') .map((t) => t.trim()) .filter(Boolean) : []; const rawConfig = { GRAFANA_URL: env.GRAFANA_URL, GRAFANA_TOKEN: env.GRAFANA_TOKEN, GRAFANA_DEBUG: env.GRAFANA_DEBUG === 'true', GRAFANA_TIMEOUT: env.GRAFANA_TIMEOUT ? parseInt(env.GRAFANA_TIMEOUT, 10) : undefined, GRAFANA_DISABLE_TOOLS: disabledTools, GRAFANA_TLS_CERT_FILE: env.GRAFANA_TLS_CERT_FILE, GRAFANA_TLS_KEY_FILE: env.GRAFANA_TLS_KEY_FILE, GRAFANA_TLS_CA_FILE: env.GRAFANA_TLS_CA_FILE, GRAFANA_TLS_SKIP_VERIFY: env.GRAFANA_TLS_SKIP_VERIFY === 'true', }; try { return ConfigSchema.parse(rawConfig); } catch (error) { if (error instanceof z.ZodError) { const issues = error.issues .map((issue) => `${issue.path.join('.')}: ${issue.message}`) .join('\\n'); throw new Error(`Configuration validation failed:\\n${issues}`); } throw error; } } /** * Check if a tool category is enabled */ export function isToolCategoryEnabled( category: ToolCategory, config: Config, ): boolean { return !config.GRAFANA_DISABLE_TOOLS.includes(category); } /** * Get list of enabled tool categories */ export function getEnabledToolCategories(config: Config): ToolCategory[] { const allCategories: ToolCategory[] = [ 'dashboards', 'datasources', 'prometheus', 'loki', 'alerting', 'incident', 'sift', 'oncall', 'admin', 'navigation', ]; return allCategories.filter((category) => isToolCategoryEnabled(category, config), ); } /** * Display configuration summary */ export function displayConfig(config: Config): void { console.log('Grafana MCP Server Configuration:'); console.log(` URL: ${config.GRAFANA_URL}`); console.log(` Debug: ${config.GRAFANA_DEBUG}`); console.log(` Timeout: ${config.GRAFANA_TIMEOUT}ms`); console.log(` TLS Skip Verify: ${config.GRAFANA_TLS_SKIP_VERIFY}`); const enabledCategories = getEnabledToolCategories(config); console.log(` Enabled Tools: ${enabledCategories.join(', ')}`); if (config.GRAFANA_DISABLE_TOOLS.length > 0) { console.log(` Disabled Tools: ${config.GRAFANA_DISABLE_TOOLS.join(', ')}`); } if ( config.GRAFANA_TLS_CERT_FILE || config.GRAFANA_TLS_KEY_FILE || config.GRAFANA_TLS_CA_FILE ) { console.log(' TLS Configuration:'); if (config.GRAFANA_TLS_CERT_FILE) console.log(` Cert File: ${config.GRAFANA_TLS_CERT_FILE}`); if (config.GRAFANA_TLS_KEY_FILE) console.log(` Key File: ${config.GRAFANA_TLS_KEY_FILE}`); if (config.GRAFANA_TLS_CA_FILE) console.log(` CA File: ${config.GRAFANA_TLS_CA_FILE}`); } console.log(''); } // Lazy configuration loading with caching let cachedConfig: Config | null = null; /** * Get configuration with lazy loading and caching */ export function getConfig(): Config { if (!cachedConfig) { cachedConfig = parseConfig(); } return cachedConfig; } /** * Clear cached configuration (useful for testing) */ export function clearConfigCache(): void { cachedConfig = null; } // Parse and export configuration for backward compatibility export const config = getConfig();