@toolprint/hypertool-mcp
Version:
HyperTool MCP proxy server for routing requests between clients and multiple underlying MCP servers
303 lines • 12.5 kB
JavaScript
/**
* Dedicated MCP server entry point for Smithery installation
*
* This file provides a clean entry point focused on stdio transport
* without the CLI scaffolding from index.ts
*/
// Set max listeners early to prevent warnings
const maxListeners = process.env.HYPERTOOL_MAX_LISTENERS
? parseInt(process.env.HYPERTOOL_MAX_LISTENERS, 10)
: 10;
if (!isNaN(maxListeners) && maxListeners > 0) {
process.setMaxListeners(maxListeners);
}
import { MetaMCPServerFactory } from "./server/index.js";
import { discoverMcpConfig } from "./config/mcpConfigLoader.js";
import { getLogger } from "./utils/logging.js";
import { parseEnvDotNotation, hasSmitheryConfig, getConfigSourceDescription, validateParsedConfig, } from "./utils/envConfigParser.js";
import * as fs from "fs";
import * as path from "path";
import * as os from "os";
/**
* Main server entry point for Smithery
*/
async function startServer(config = {}) {
// Create runtime options from Smithery config first for logging
const runtimeOptions = {
transport: config.transport || "stdio",
port: config.port,
host: config.host,
debug: config.debug || false,
insecure: false, // Always secure for Smithery installs
equipToolset: config.equipToolset,
configPath: config.mcpConfigPath,
logLevel: config.logLevel || "info",
group: config.group,
};
// Initialize logger with transport-aware configuration
const logger = getLogger(undefined, runtimeOptions);
// Parse environment variables for Smithery configuration
const envConfig = parseEnvDotNotation();
const hasEnvConfig = hasSmitheryConfig();
// Log all available configuration sources for experimentation
logger.info("=== SMITHERY CONFIGURATION EXPERIMENT ===");
logger.info("CLI Arguments:", process.argv.slice(2));
logger.info("Environment Variables:", Object.keys(process.env)
.filter((k) => k.includes("MCP") ||
k.includes("SMITHERY") ||
k.includes("CONFIG") ||
k.includes("SERVER"))
.reduce((acc, key) => ({ ...acc, [key]: process.env[key] }), {}));
logger.info("Passed Config Object:", config);
if (hasEnvConfig) {
logger.info("Parsed Environment Config:", envConfig);
logger.info("Environment Config Sources:", getConfigSourceDescription(envConfig));
// Validate environment configuration
const validation = validateParsedConfig(envConfig);
if (!validation.valid) {
logger.warn("Environment configuration validation issues:", validation.errors);
}
// Merge environment config (but CLI args and passed config take precedence)
config = {
...envConfig,
...config,
};
}
// Check for JSON configuration in environment
const jsonConfigEnv = process.env.SMITHERY_CONFIG ||
process.env.MCP_CONFIG ||
process.env.CONFIG_JSON;
if (jsonConfigEnv) {
try {
const parsedJsonConfig = JSON.parse(jsonConfigEnv);
logger.info("Parsed JSON Config from Environment:", parsedJsonConfig);
// Merge JSON config if found (but other config takes precedence)
config = {
...parsedJsonConfig,
...config,
};
}
catch (error) {
logger.warn("Failed to parse JSON config from environment:", error);
}
}
// Set up process warning listener
process.on("warning", (warning) => {
logger.warn("Node.js warning", {
name: warning.name,
message: warning.message,
stack: warning.stack,
});
});
try {
// Handle MCP server configuration from Smithery
let configPath = null;
let configSource = "unknown";
let temporaryConfigFile = null;
if (config.mcpServers && Object.keys(config.mcpServers).length > 0) {
logger.info("Using MCP configuration from Smithery:", config.mcpServers);
// Create a temporary file with Smithery configuration
try {
const tempDir = os.tmpdir();
temporaryConfigFile = path.join(tempDir, `smithery-mcp-config-${Date.now()}.json`);
const mcpConfig = { mcpServers: config.mcpServers };
await fs.promises.writeFile(temporaryConfigFile, JSON.stringify(mcpConfig, null, 2));
configPath = temporaryConfigFile;
configSource = "smithery";
logger.info(`Created temporary config file: ${temporaryConfigFile}`);
}
catch (error) {
logger.error("Failed to create temporary configuration file:", error);
process.exit(1);
}
}
else {
// Fallback to file-based configuration discovery
logger.info("No MCP configuration from Smithery, using file-based discovery");
const configResult = await discoverMcpConfig(runtimeOptions.configPath, false, // Don't update preference for Smithery installs
runtimeOptions.linkedApp, runtimeOptions.profile);
configPath = configResult.configPath;
configSource = configResult.configSource?.type || "file";
// Handle configuration discovery results
if (!configPath) {
logger.error("No MCP configuration found");
if (configResult.errorMessage) {
logger.error(configResult.errorMessage);
}
process.exit(1);
}
}
// Create transport config based on runtime options
const transportConfig = {
type: runtimeOptions.transport,
...(runtimeOptions.transport === "http" && {
port: runtimeOptions.port || 3000,
host: runtimeOptions.host || "localhost",
}),
};
// Create server instance
const server = MetaMCPServerFactory.createDefaultServer(transportConfig);
// Setup graceful shutdown
let isShuttingDown = false;
const shutdown = async (signal) => {
if (isShuttingDown) {
return;
}
isShuttingDown = true;
if (runtimeOptions.debug) {
logger.debug(`Shutting down HyperTool server... (${signal || "manual"})`);
}
// Clean up temporary config file if created
if (temporaryConfigFile) {
try {
await fs.promises.unlink(temporaryConfigFile);
logger.debug(`Cleaned up temporary config file: ${temporaryConfigFile}`);
}
catch (error) {
logger.warn(`Failed to clean up temporary config file: ${error}`);
}
}
// Set a hard timeout for graceful shutdown
const forceExitTimeout = setTimeout(() => {
logger.error("Forcefully exiting after timeout - graceful shutdown failed");
process.exit(1);
}, 5000);
try {
await server.stop();
clearTimeout(forceExitTimeout);
process.exit(0);
}
catch (error) {
logger.error("Error during shutdown:", error);
clearTimeout(forceExitTimeout);
process.exit(1);
}
};
// Handle signals
process.on("SIGINT", () => setImmediate(() => shutdown("SIGINT")));
process.on("SIGTERM", () => setImmediate(() => shutdown("SIGTERM")));
process.on("SIGHUP", () => setImmediate(() => shutdown("SIGHUP")));
// Handle uncaught exceptions
process.on("uncaughtException", (error) => {
logger.error("Uncaught exception:", error);
shutdown("uncaughtException");
});
// Handle stdin end as shutdown signal only for stdio transport (and not in test environment)
if (runtimeOptions.transport === "stdio" &&
process.env.NODE_ENV !== "test") {
process.stdin.on("end", () => {
logger.debug("stdin ended, shutting down...");
shutdown("stdin-end");
});
}
// Create initialization options
const initOptions = MetaMCPServerFactory.createInitOptions({
transport: transportConfig,
debug: runtimeOptions.debug,
configPath: configPath,
configSource: configSource,
});
// Start the server
await server.start(initOptions, runtimeOptions);
}
catch (error) {
logger.error("Failed to start HyperTool server:", error);
process.exit(1);
}
}
// For programmatic use
export { startServer };
/**
* Simple CLI argument parser for basic flags
*/
function parseCliArgs(args) {
const config = {};
for (let i = 0; i < args.length; i++) {
const arg = args[i];
const nextArg = args[i + 1];
switch (arg) {
case "--mcp-config":
if (nextArg && !nextArg.startsWith("--")) {
config.mcpConfigPath = nextArg;
i++; // skip next arg since we consumed it
}
break;
case "--debug":
config.debug = true;
break;
case "--log-level":
if (nextArg && !nextArg.startsWith("--")) {
config.logLevel = nextArg;
i++; // skip next arg since we consumed it
}
break;
case "--group":
if (nextArg && !nextArg.startsWith("--")) {
config.group = nextArg;
i++; // skip next arg since we consumed it
}
break;
case "--equip-toolset":
if (nextArg && !nextArg.startsWith("--")) {
config.equipToolset = nextArg;
i++; // skip next arg since we consumed it
}
break;
case "--transport":
if (nextArg && !nextArg.startsWith("--")) {
config.transport = nextArg;
i++; // skip next arg since we consumed it
}
break;
case "--port":
if (nextArg && !nextArg.startsWith("--")) {
config.port = parseInt(nextArg, 10);
i++; // skip next arg since we consumed it
}
break;
case "--host":
if (nextArg && !nextArg.startsWith("--")) {
config.host = nextArg;
i++; // skip next arg since we consumed it
}
break;
}
}
return config;
}
// Auto-start if this file is run directly
if (import.meta.url === `file://${process.argv[1]}`) {
// Parse CLI arguments first
const cliArgs = parseCliArgs(process.argv.slice(2));
// Parse configuration from environment variables (fallback)
const envConfig = {
mcpConfigPath: process.env.MCP_CONFIG_PATH,
debug: process.env.DEBUG === "true",
logLevel: process.env.LOG_LEVEL || "info",
group: process.env.SERVER_GROUP,
equipToolset: process.env.EQUIP_TOOLSET,
};
// Parse Smithery-style configuration from environment variables
const parsedEnvConfig = parseEnvDotNotation();
const hasSmitheryEnvConfig = hasSmitheryConfig();
if (hasSmitheryEnvConfig) {
console.log("Found Smithery configuration in environment:");
console.log("Parsed config:", JSON.stringify(parsedEnvConfig, null, 2));
console.log("Config sources:", getConfigSourceDescription(parsedEnvConfig));
// Validate the parsed configuration
const validation = validateParsedConfig(parsedEnvConfig);
if (!validation.valid) {
console.warn("Configuration validation warnings:", validation.errors);
}
// Merge environment configuration (CLI args take precedence)
Object.assign(envConfig, parsedEnvConfig);
}
// Merge configurations - CLI args take precedence over env vars
const config = {
...envConfig,
...cliArgs,
};
await startServer(config);
}
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