shumengya
50edff80f5
包含 extensions、skills、prompts、settings、auth、models、mcp 等配置。 排除 node_modules、npm 缓存、sessions 等运行时数据。
442 lines
17 KiB
TypeScript
442 lines
17 KiB
TypeScript
import type { AgentToolResult, AgentToolUpdateCallback, ExtensionContext } from "@earendil-works/pi-coding-agent";
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import { UrlElicitationRequiredError } from "@modelcontextprotocol/sdk/types.js";
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import type { McpExtensionState } from "./state.ts";
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import type { DirectToolSpec, McpConfig, McpContent } from "./types.ts";
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import type { MetadataCache } from "./metadata-cache.ts";
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import { lazyConnect, getFailureAgeSeconds } from "./init.ts";
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import { isServerCacheValid } from "./metadata-cache.ts";
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import { formatSchema } from "./tool-metadata.ts";
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import { transformMcpContent } from "./tool-registrar.ts";
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import { maybeStartUiSession, type UiSessionRuntime } from "./ui-session.ts";
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import { formatToolName, isToolExcluded } from "./types.ts";
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import { resourceNameToToolName } from "./resource-tools.ts";
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import { authenticate, supportsOAuth } from "./mcp-auth-flow.ts";
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import { formatAuthRequiredMessage } from "./utils.ts";
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const BUILTIN_NAMES = new Set(["read", "bash", "edit", "write", "grep", "find", "ls", "mcp"]);
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type DirectAutoAuthResult =
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| { status: "skipped" }
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| { status: "success" }
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| { status: "failed"; message: string };
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function getDirectAuthRequiredMessage(
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state: McpExtensionState,
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serverName: string,
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defaultMessage = `MCP server "${serverName}" requires OAuth authentication. Run mcp({ action: "auth-start", server: "${serverName}" }) to get a browser URL, or /mcp-auth ${serverName} in an interactive local session.`,
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): string {
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return formatAuthRequiredMessage(state.config, serverName, defaultMessage);
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}
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function getDirectAuthFailedMessage(state: McpExtensionState, serverName: string, message: string): string {
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const customGuidance = state.config.settings?.authRequiredMessage;
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if (customGuidance) {
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return `OAuth authentication failed for "${serverName}": ${message}. ${getDirectAuthRequiredMessage(state, serverName)}`;
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}
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return `OAuth authentication failed for "${serverName}": ${message}. Run mcp({ action: "auth-start", server: "${serverName}" }) to get a browser URL, or /mcp-auth ${serverName} in an interactive local session.`;
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}
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async function attemptDirectAutoAuth(
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state: McpExtensionState,
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serverName: string,
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): Promise<DirectAutoAuthResult> {
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if (state.config.settings?.autoAuth !== true) {
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return { status: "skipped" };
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}
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const definition = state.config.mcpServers[serverName];
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if (!definition || !supportsOAuth(definition) || !definition.url) {
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return { status: "skipped" };
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}
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const grantType = definition.oauth ? definition.oauth.grantType ?? "authorization_code" : "authorization_code";
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if (!state.ui && grantType !== "client_credentials") {
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return {
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status: "failed",
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message: getDirectAuthRequiredMessage(
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state,
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serverName,
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`MCP server "${serverName}" requires OAuth authentication. Run mcp({ action: "auth-start", server: "${serverName}" }) to get a browser URL, or /mcp-auth ${serverName} in an interactive local session.`,
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),
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};
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}
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try {
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await authenticate(serverName, definition.url, definition);
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return { status: "success" };
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} catch (error) {
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const message = error instanceof Error ? error.message : String(error);
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return {
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status: "failed",
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message: getDirectAuthFailedMessage(state, serverName, message),
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};
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}
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}
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export function resolveDirectTools(
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config: McpConfig,
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cache: MetadataCache | null,
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prefix: "server" | "none" | "short",
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envOverride?: string[],
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): DirectToolSpec[] {
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const specs: DirectToolSpec[] = [];
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if (!cache) return specs;
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const seenNames = new Set<string>();
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const envServers = new Set<string>();
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const envTools = new Map<string, Set<string>>();
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if (envOverride) {
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for (let item of envOverride) {
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item = item.replace(/\/+$/, "");
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if (item.includes("/")) {
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const [server, tool] = item.split("/", 2);
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if (server && tool) {
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if (!envTools.has(server)) envTools.set(server, new Set());
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envTools.get(server)!.add(tool);
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} else if (server) {
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envServers.add(server);
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}
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} else if (item) {
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envServers.add(item);
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}
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}
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}
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const globalDirect = config.settings?.directTools;
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for (const [serverName, definition] of Object.entries(config.mcpServers)) {
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const serverCache = cache.servers[serverName];
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if (!serverCache || !isServerCacheValid(serverCache, definition)) continue;
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let toolFilter: true | string[] | false = false;
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if (envOverride) {
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if (envServers.has(serverName)) {
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toolFilter = true;
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} else if (envTools.has(serverName)) {
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toolFilter = [...envTools.get(serverName)!];
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}
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} else {
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if (definition.directTools !== undefined) {
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toolFilter = definition.directTools;
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} else if (globalDirect) {
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toolFilter = globalDirect;
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}
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}
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if (!toolFilter) continue;
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for (const tool of serverCache.tools ?? []) {
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if (toolFilter !== true && !toolFilter.includes(tool.name)) continue;
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if (isToolExcluded(tool.name, serverName, prefix, definition.excludeTools)) continue;
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const prefixedName = formatToolName(tool.name, serverName, prefix);
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if (BUILTIN_NAMES.has(prefixedName)) {
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console.warn(`MCP: skipping direct tool "${prefixedName}" (collides with builtin)`);
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continue;
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}
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if (seenNames.has(prefixedName)) {
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console.warn(`MCP: skipping duplicate direct tool "${prefixedName}" from "${serverName}"`);
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continue;
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}
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seenNames.add(prefixedName);
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specs.push({
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serverName,
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originalName: tool.name,
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prefixedName,
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description: tool.description ?? "",
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inputSchema: tool.inputSchema,
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uiResourceUri: tool.uiResourceUri,
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uiStreamMode: tool.uiStreamMode,
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});
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}
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if (definition.exposeResources !== false) {
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for (const resource of serverCache.resources ?? []) {
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const baseName = `get_${resourceNameToToolName(resource.name)}`;
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if (toolFilter !== true && !toolFilter.includes(baseName)) continue;
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if (isToolExcluded(baseName, serverName, prefix, definition.excludeTools)) continue;
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const prefixedName = formatToolName(baseName, serverName, prefix);
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if (BUILTIN_NAMES.has(prefixedName)) {
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console.warn(`MCP: skipping direct resource tool "${prefixedName}" (collides with builtin)`);
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continue;
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}
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if (seenNames.has(prefixedName)) {
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console.warn(`MCP: skipping duplicate direct resource tool "${prefixedName}" from "${serverName}"`);
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continue;
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}
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seenNames.add(prefixedName);
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specs.push({
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serverName,
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originalName: baseName,
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prefixedName,
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description: resource.description ?? `Read resource: ${resource.uri}`,
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resourceUri: resource.uri,
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});
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}
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}
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}
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return specs;
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}
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export function getMissingConfiguredDirectToolServers(
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config: McpConfig,
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cache: MetadataCache | null,
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): string[] {
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const missing: string[] = [];
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const globalDirect = config.settings?.directTools;
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for (const [serverName, definition] of Object.entries(config.mcpServers)) {
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const hasDirectTools = definition.directTools !== undefined
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? !!definition.directTools
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: !!globalDirect;
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if (!hasDirectTools) continue;
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const serverCache = cache?.servers?.[serverName];
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if (!serverCache || !isServerCacheValid(serverCache, definition)) {
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missing.push(serverName);
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}
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}
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return missing;
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}
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export function buildProxyDescription(
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config: McpConfig,
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cache: MetadataCache | null,
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directSpecs: DirectToolSpec[],
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): string {
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const prefix = config.settings?.toolPrefix ?? "server";
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let desc = `MCP gateway - connect to MCP servers and call their tools. Non-MCP Pi tools should be called directly, not through mcp.\n`;
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const directByServer = new Map<string, number>();
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for (const spec of directSpecs) {
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directByServer.set(spec.serverName, (directByServer.get(spec.serverName) ?? 0) + 1);
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}
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if (directByServer.size > 0) {
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const parts = [...directByServer.entries()].map(
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([server, count]) => `${server} (${count})`,
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);
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desc += `\nDirect tools available (call as normal tools): ${parts.join(", ")}\n`;
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}
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const serverSummaries: string[] = [];
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for (const serverName of Object.keys(config.mcpServers)) {
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const entry = cache?.servers?.[serverName];
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const definition = config.mcpServers[serverName];
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const toolCount = (entry?.tools ?? []).filter(
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(tool) => !isToolExcluded(tool.name, serverName, prefix, definition.excludeTools),
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).length;
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const resourceCount = definition?.exposeResources !== false
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? (entry?.resources ?? []).filter((resource) => {
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const baseName = `get_${resourceNameToToolName(resource.name)}`;
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return !isToolExcluded(baseName, serverName, prefix, definition.excludeTools);
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}).length
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: 0;
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const totalItems = toolCount + resourceCount;
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if (totalItems === 0) continue;
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const directCount = directByServer.get(serverName) ?? 0;
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const proxyCount = totalItems - directCount;
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if (proxyCount > 0) {
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serverSummaries.push(`${serverName} (${proxyCount} tools)`);
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}
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}
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if (serverSummaries.length > 0) {
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desc += `\nServers: ${serverSummaries.join(", ")}\n`;
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}
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desc += `\nUsage:\n`;
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desc += ` mcp({ }) → Show server status\n`;
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desc += ` mcp({ server: "name" }) → List tools from server\n`;
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desc += ` mcp({ search: "query" }) → Search MCP tools by name/description\n`;
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desc += ` mcp({ describe: "tool_name" }) → Show tool details and parameters\n`;
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desc += ` mcp({ connect: "server-name" }) → Connect to a server and refresh metadata\n`;
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desc += ` mcp({ tool: "name", args: '{"key": "value"}' }) → Call a tool (args is JSON string)\n`;
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desc += ` mcp({ action: "ui-messages" }) → Retrieve accumulated messages from completed UI sessions\n`;
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desc += ` mcp({ action: "auth-start", server: "name" }) → Start manual OAuth and get a browser URL\n`;
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desc += ` mcp({ action: "auth-complete", server: "name", args: '{"redirectUrl":"..."}' }) → Complete manual OAuth\n`;
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desc += `\nMode: action > tool (call) > connect > describe > search > server (list) > nothing (status)`;
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return desc;
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}
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type DirectToolExecute = (
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toolCallId: string,
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params: Record<string, unknown>,
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signal: AbortSignal | undefined,
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onUpdate: AgentToolUpdateCallback<Record<string, unknown>> | undefined,
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ctx: ExtensionContext,
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) => Promise<AgentToolResult<Record<string, unknown>>>;
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export function createDirectToolExecutor(
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getState: () => McpExtensionState | null,
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getInitPromise: () => Promise<McpExtensionState> | null,
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spec: DirectToolSpec
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): DirectToolExecute {
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return async function execute(_toolCallId, params) {
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let state = getState();
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const initPromise = getInitPromise();
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if (!state && initPromise) {
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try {
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state = await initPromise;
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} catch (error) {
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const message = error instanceof Error ? error.message : String(error);
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return {
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content: [{ type: "text" as const, text: `MCP initialization failed: ${message}` }],
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details: { error: "init_failed", message },
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};
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}
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}
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if (!state) {
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return {
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content: [{ type: "text" as const, text: "MCP not initialized" }],
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details: { error: "not_initialized" },
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};
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}
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let connected = await lazyConnect(state, spec.serverName);
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let autoAuthAttempted = false;
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if (!connected && state.manager.getConnection(spec.serverName)?.status === "needs-auth") {
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autoAuthAttempted = true;
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const autoAuth = await attemptDirectAutoAuth(state, spec.serverName);
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if (autoAuth.status === "failed") {
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return {
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content: [{ type: "text" as const, text: autoAuth.message }],
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details: { error: "auth_required", server: spec.serverName, message: autoAuth.message },
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};
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}
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if (autoAuth.status === "success") {
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await state.manager.close(spec.serverName);
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state.failureTracker.delete(spec.serverName);
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connected = await lazyConnect(state, spec.serverName);
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}
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}
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if (!connected) {
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const authConnection = state.manager.getConnection(spec.serverName);
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if (authConnection?.status === "needs-auth") {
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const message = getDirectAuthRequiredMessage(state, spec.serverName);
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return {
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content: [{ type: "text" as const, text: message }],
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details: { error: "auth_required", server: spec.serverName, message, autoAuthAttempted },
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};
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}
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const failedAgo = getFailureAgeSeconds(state, spec.serverName);
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return {
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content: [{ type: "text" as const, text: `MCP server "${spec.serverName}" not available${failedAgo !== null ? ` (failed ${failedAgo}s ago)` : ""}` }],
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details: { error: "server_unavailable", server: spec.serverName },
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};
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}
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const connection = state.manager.getConnection(spec.serverName);
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if (!connection || connection.status !== "connected") {
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return {
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content: [{ type: "text" as const, text: `MCP server "${spec.serverName}" not connected` }],
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details: { error: "not_connected", server: spec.serverName },
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};
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}
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let uiSession: UiSessionRuntime | null = null;
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try {
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state.manager.touch(spec.serverName);
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state.manager.incrementInFlight(spec.serverName);
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if (spec.resourceUri) {
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const result = await connection.client.readResource({ uri: spec.resourceUri });
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const content = (result.contents ?? []).map(c => ({
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type: "text" as const,
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text: "text" in c ? c.text : ("blob" in c ? `[Binary data: ${(c as { mimeType?: string }).mimeType ?? "unknown"}]` : JSON.stringify(c)),
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}));
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return {
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content: content.length > 0 ? content : [{ type: "text" as const, text: "(empty resource)" }],
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details: { server: spec.serverName, resourceUri: spec.resourceUri },
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};
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}
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const hasUi = !!spec.uiResourceUri;
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uiSession = hasUi
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? await maybeStartUiSession(state, {
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serverName: spec.serverName,
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toolName: spec.originalName,
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toolArgs: params ?? {},
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uiResourceUri: spec.uiResourceUri!,
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streamMode: spec.uiStreamMode,
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})
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: null;
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const resultPromise = connection.client.callTool({
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name: spec.originalName,
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arguments: params ?? {},
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_meta: uiSession?.requestMeta,
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});
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const result = await resultPromise;
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uiSession?.sendToolResult(result as unknown as import("@modelcontextprotocol/sdk/types.js").CallToolResult);
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const mcpContent = (result.content ?? []) as McpContent[];
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const content = transformMcpContent(mcpContent);
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if (result.isError) {
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let errorText = content.filter(c => c.type === "text").map(c => (c as { text: string }).text).join("\n") || "Tool execution failed";
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if (spec.inputSchema) {
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errorText += `\n\nExpected parameters:\n${formatSchema(spec.inputSchema)}`;
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}
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return {
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content: [{ type: "text" as const, text: `Error: ${errorText}` }],
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details: { error: "tool_error", server: spec.serverName },
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};
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}
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const resultText = content.filter(c => c.type === "text").map(c => (c as { text: string }).text).join("\n") || "(empty result)";
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if (hasUi) {
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const uiMessage = uiSession?.reused
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? "Updated the open UI."
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: "📺 Interactive UI is now open in your browser. I'll respond to your prompts and intents as you interact with it.";
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return {
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content: [{ type: "text" as const, text: `${resultText}\n\n${uiMessage}` }],
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details: { server: spec.serverName, tool: spec.originalName, uiOpen: true },
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};
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}
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return {
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content: content.length > 0 ? content : [{ type: "text" as const, text: "(empty result)" }],
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details: { server: spec.serverName, tool: spec.originalName },
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};
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} catch (error) {
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if (error instanceof UrlElicitationRequiredError) {
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const action = await state.manager.handleUrlElicitationRequired(spec.serverName, error);
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const message = action === "accept"
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? "The original MCP tool did not run. Complete the opened browser interaction, then retry the tool."
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: `The URL interaction was ${action === "decline" ? "declined" : "cancelled"}.`;
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uiSession?.sendToolCancelled(message);
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return {
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content: [{ type: "text" as const, text: message }],
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details: { error: "url_elicitation_required", server: spec.serverName, action },
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};
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}
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const message = error instanceof Error ? error.message : String(error);
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uiSession?.sendToolCancelled(message);
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let errorText = `Failed to call tool: ${message}`;
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if (spec.inputSchema) {
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errorText += `\n\nExpected parameters:\n${formatSchema(spec.inputSchema)}`;
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}
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return {
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content: [{ type: "text" as const, text: errorText }],
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details: { error: "call_failed", server: spec.serverName },
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};
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} finally {
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if (uiSession?.reused) {
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uiSession.close();
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}
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state.manager.decrementInFlight(spec.serverName);
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state.manager.touch(spec.serverName);
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}
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};
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}
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