72 lines
2.5 KiB
TypeScript
72 lines
2.5 KiB
TypeScript
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import { createRequire } from "node:module";
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import { env, execPath, stderr } from "node:process";
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import { LSP_MCP_TOOLS } from "@code-yeongyu/lsp-tools-mcp/dist/tools.js";
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import {
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createLazyMcpProxy,
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DEFAULT_LAZY_MCP_IDLE_TIMEOUT_MS,
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type LazyMcpBackendProcessConfig,
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type McpToolDescriptor,
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resolveLazyLspBackendConfig,
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} from "./lazy-mcp-proxy.js";
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import { createStdioLazyMcpBackend } from "./lazy-mcp-stdio-backend.js";
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import { type LazyMcpLifecycleLog, runLazyMcpStdioServer } from "./lazy-mcp-stdio-server.js";
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const require = createRequire(import.meta.url);
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const BACKEND_CONFIG_ENV = "CODEX_LSP_LAZY_BACKEND";
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const IDLE_TIMEOUT_ENV = "CODEX_LSP_LAZY_IDLE_TIMEOUT_MS";
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export interface LazyLspIdleTimeoutResolution {
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readonly value: number;
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readonly warning?: string;
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}
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export async function runLazyLspMcpServer(
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input: NodeJS.ReadableStream = process.stdin,
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output: NodeJS.WritableStream = process.stdout,
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): Promise<void> {
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const fallback = defaultLazyLspBackendConfig();
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const resolved = resolveLazyLspBackendConfig(env[BACKEND_CONFIG_ENV], fallback);
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if (resolved.warning !== undefined) stderr.write(`${resolved.warning}\n`);
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const idleTimeout = resolveLazyLspIdleTimeoutMs(env[IDLE_TIMEOUT_ENV], DEFAULT_LAZY_MCP_IDLE_TIMEOUT_MS);
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if (idleTimeout.warning !== undefined) stderr.write(`${idleTimeout.warning}\n`);
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const log: LazyMcpLifecycleLog = (event, fields = {}) => {
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stderr.write(`[codex-lsp lazy-mcp] ${event} ${JSON.stringify(fields)}\n`);
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};
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const proxy = createLazyMcpProxy({
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backend: createStdioLazyMcpBackend(resolved.config),
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idleTimeoutMs: idleTimeout.value,
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log,
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serverName: "lsp",
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serverVersion: "0.2.0",
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toolDescriptors: lspToolDescriptors(),
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});
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await runLazyMcpStdioServer(proxy, input, output, { log });
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}
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export function defaultLazyLspBackendConfig(): LazyMcpBackendProcessConfig {
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return {
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command: execPath,
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args: [require.resolve("@code-yeongyu/lsp-tools-mcp/dist/cli.js"), "mcp"],
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};
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}
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export function resolveLazyLspIdleTimeoutMs(
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rawValue: string | undefined,
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fallback: number,
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): LazyLspIdleTimeoutResolution {
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if (rawValue === undefined || rawValue.trim() === "") return { value: fallback };
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const parsed = Number(rawValue);
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if (Number.isInteger(parsed) && parsed >= 0) return { value: parsed };
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return { value: fallback, warning: `Ignoring malformed lazy MCP idle timeout: ${rawValue}` };
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}
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export function lspToolDescriptors(): readonly McpToolDescriptor[] {
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return LSP_MCP_TOOLS.map((tool) => ({
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name: tool.name,
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title: tool.title,
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description: tool.description,
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inputSchema: tool.inputSchema,
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}));
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}
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