aichat-core
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AI 流式聊天业务核心TS模型封装及业务实现模块
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JavaScript
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g = Object.create((typeof Iterator === "function" ? Iterator : Object).prototype);
return g.next = verb(0), g["throw"] = verb(1), g["return"] = verb(2), typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
import { Client } from "@modelcontextprotocol/sdk/client/index.js";
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js";
import McpTool from "./McpTool";
var McpClient = (function () {
function McpClient(name) {
this.transport = null;
this.mcp = new Client({
name: name ? "mcp-client-".concat(name) : "mcp-client",
version: "1.0.0",
});
}
McpClient.prototype.connect2Server = function (serverUrl) {
return __awaiter(this, void 0, void 0, function () {
var url, e_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
url = new URL(serverUrl);
this.transport = new StreamableHTTPClientTransport(url, {
requestInit: {
headers: {},
},
});
return [4, this.mcp.connect(this.transport)];
case 1:
_a.sent();
this.setUpTransport();
return [3, 3];
case 2:
e_1 = _a.sent();
console.log("Failed to connect to MCP server: ", e_1);
throw e_1;
case 3: return [2];
}
});
});
};
McpClient.prototype.getTools = function () {
return __awaiter(this, void 0, void 0, function () {
var toolsResult;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
this.validMcpClient();
return [4, this.mcp.listTools()];
case 1:
toolsResult = _a.sent();
return [2, toolsResult.tools.map(function (tool) {
return new McpTool(tool.name, tool.description || "", tool.inputSchema);
})];
}
});
});
};
McpClient.prototype.callTool = function (toolCall) {
return __awaiter(this, void 0, void 0, function () {
var methodName, methodArgs, callParam, result, bSuccess, content, type, error_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
this.validMcpClient();
methodName = toolCall.function.name;
methodArgs = toolCall.function.arguments;
_a.label = 1;
case 1:
_a.trys.push([1, 3, , 4]);
callParam = {
name: methodName,
arguments: JSON.parse(methodArgs),
};
return [4, this.mcp.callTool(callParam)];
case 2:
result = _a.sent();
bSuccess = !result.isError;
if (bSuccess) {
content = result.content;
if (Array.isArray(content) && content.length > 0) {
type = content[0].type;
if (type === 'text') {
return [2, content[0].text];
}
else {
return [2, "执行结果格式暂无法处理：" + type];
}
}
}
else {
return [2, "执行结果发生错误，请排查！"];
}
return [2, result];
case 3:
error_1 = _a.sent();
console.error("[mcpClient] failed to call tool ".concat(methodName, ": ").concat(error_1));
throw error_1;
case 4: return [2];
}
});
});
};
McpClient.prototype.validMcpClient = function () {
if (!this.mcp) {
throw new Error("MCP客户端实例对象未初始化！");
}
};
McpClient.prototype.setUpTransport = function () {
var _this = this;
if (this.transport === null) {
return;
}
this.transport.onclose = function () { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4, this.cleanup()];
case 1:
_a.sent();
return [2];
}
});
}); };
this.transport.onerror = function () { return __awaiter(_this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4, this.cleanup()];
case 1:
_a.sent();
return [2];
}
});
}); };
};
McpClient.prototype.cleanup = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4, this.mcp.close()];
case 1:
_a.sent();
return [2];
}
});
});
};
return McpClient;
}());
export default McpClient;