94 lines
3.4 KiB
TypeScript
94 lines
3.4 KiB
TypeScript
/**
|
|
* Copyright (c) Microsoft Corporation.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
import { fileURLToPath } from 'url';
|
|
import { FullConfig } from './config.js';
|
|
import { Context } from './context.js';
|
|
import { logUnhandledError } from './log.js';
|
|
import { Response } from './response.js';
|
|
import { SessionLog } from './sessionLog.js';
|
|
import { filteredTools } from './tools.js';
|
|
import { packageJSON } from './package.js';
|
|
|
|
import type { Tool } from './tools/tool.js';
|
|
import type { BrowserContextFactory } from './browserContextFactory.js';
|
|
import type * as mcpServer from './mcp/server.js';
|
|
import type { ServerBackend } from './mcp/server.js';
|
|
|
|
export class BrowserServerBackend implements ServerBackend {
|
|
name = 'Playwright';
|
|
version = packageJSON.version;
|
|
|
|
private _tools: Tool[];
|
|
private _context: Context | undefined;
|
|
private _sessionLog: SessionLog | undefined;
|
|
private _config: FullConfig;
|
|
private _browserContextFactory: BrowserContextFactory;
|
|
|
|
constructor(config: FullConfig, factory: BrowserContextFactory) {
|
|
this._config = config;
|
|
this._browserContextFactory = factory;
|
|
this._tools = filteredTools(config);
|
|
}
|
|
|
|
async initialize(server: mcpServer.Server): Promise<void> {
|
|
const capabilities = server.getClientCapabilities() as mcpServer.ClientCapabilities;
|
|
let rootPath: string | undefined;
|
|
if (capabilities.roots && (
|
|
server.getClientVersion()?.name === 'Visual Studio Code' ||
|
|
server.getClientVersion()?.name === 'Visual Studio Code - Insiders')) {
|
|
const { roots } = await server.listRoots();
|
|
const firstRootUri = roots[0]?.uri;
|
|
const url = firstRootUri ? new URL(firstRootUri) : undefined;
|
|
rootPath = url ? fileURLToPath(url) : undefined;
|
|
}
|
|
this._sessionLog = this._config.saveSession ? await SessionLog.create(this._config, rootPath) : undefined;
|
|
this._context = new Context({
|
|
tools: this._tools,
|
|
config: this._config,
|
|
browserContextFactory: this._browserContextFactory,
|
|
sessionLog: this._sessionLog,
|
|
clientInfo: { ...server.getClientVersion(), rootPath },
|
|
});
|
|
}
|
|
|
|
tools(): mcpServer.ToolSchema<any>[] {
|
|
return this._tools.map(tool => tool.schema);
|
|
}
|
|
|
|
async callTool(schema: mcpServer.ToolSchema<any>, rawArguments: any) {
|
|
const context = this._context!;
|
|
const parsedArguments = schema.inputSchema.parse(rawArguments || {});
|
|
const response = new Response(context, schema.name, parsedArguments);
|
|
const tool = this._tools.find(tool => tool.schema.name === schema.name)!;
|
|
context.setRunningTool(true);
|
|
try {
|
|
await tool.handle(context, parsedArguments, response);
|
|
await response.finish();
|
|
this._sessionLog?.logResponse(response);
|
|
} catch (error: any) {
|
|
response.addError(String(error));
|
|
} finally {
|
|
context.setRunningTool(false);
|
|
}
|
|
return response.serialize();
|
|
}
|
|
|
|
serverClosed() {
|
|
void this._context!.dispose().catch(logUnhandledError);
|
|
}
|
|
}
|