add hw2

node_modules/chromium-bidi/lib/esm/bidiServer/MapperCdpConnection.js

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+/**
+ * Copyright 2021 Google LLC.
+ * 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 debug from 'debug';
+import { SimpleTransport } from './SimpleTransport.js';
+const debugInternal = debug('bidi:mapper:internal');
+const debugInfo = debug('bidi:mapper:info');
+const debugOthers = debug('bidi:mapper:debug:others');
+// Memorizes a debug creation
+const loggers = new Map();
+const getLogger = (type) => {
+    const prefix = `bidi:mapper:${type}`;
+    let logger = loggers.get(prefix);
+    if (!logger) {
+        logger = debug(prefix);
+        loggers.set(prefix, logger);
+    }
+    return logger;
+};
+export class MapperServerCdpConnection {
+    #cdpConnection;
+    #bidiSession;
+    static async create(cdpConnection, mapperTabSource, verbose) {
+        try {
+            const bidiSession = await this.#initMapper(cdpConnection, mapperTabSource, verbose);
+            return new MapperServerCdpConnection(cdpConnection, bidiSession);
+        }
+        catch (e) {
+            cdpConnection.close();
+            throw e;
+        }
+    }
+    constructor(cdpConnection, bidiSession) {
+        this.#cdpConnection = cdpConnection;
+        this.#bidiSession = bidiSession;
+    }
+    static async #sendMessage(mapperCdpClient, message) {
+        try {
+            await mapperCdpClient.sendCommand('Runtime.evaluate', {
+                expression: `onBidiMessage(${JSON.stringify(message)})`,
+            });
+        }
+        catch (error) {
+            debugInternal('Call to onBidiMessage failed', error);
+        }
+    }
+    close() {
+        this.#cdpConnection.close();
+    }
+    bidiSession() {
+        return this.#bidiSession;
+    }
+    static #onBindingCalled = (params, bidiSession) => {
+        if (params.name === 'sendBidiResponse') {
+            bidiSession.emit('message', params.payload);
+        }
+        else if (params.name === 'sendDebugMessage') {
+            this.#onDebugMessage(params.payload);
+        }
+    };
+    static #onDebugMessage = (json) => {
+        try {
+            const log = JSON.parse(json);
+            if (log.logType !== undefined && log.messages !== undefined) {
+                const logger = getLogger(log.logType);
+                logger(log.messages);
+            }
+        }
+        catch {
+            // Fall back to raw log in case of unknown
+            debugOthers(json);
+        }
+    };
+    static #onConsoleAPICalled = (params) => {
+        debugInfo('consoleAPICalled: %s %O', params.type, params.args.map((arg) => arg.value));
+    };
+    static #onRuntimeExceptionThrown = (params) => {
+        debugInfo('exceptionThrown:', params);
+    };
+    static async #initMapper(cdpConnection, mapperTabSource, verbose) {
+        debugInternal('Initializing Mapper.');
+        const browserClient = await cdpConnection.createBrowserSession();
+        // Run mapper in the first open tab.
+        const targets = (await cdpConnection.sendCommand('Target.getTargets', {}));
+        const mapperTabTargetId = targets.targetInfos.filter((target) => target.type === 'page')[0].targetId;
+        const { sessionId: mapperSessionId } = await browserClient.sendCommand('Target.attachToTarget', { targetId: mapperTabTargetId, flatten: true });
+        const mapperCdpClient = cdpConnection.getCdpClient(mapperSessionId);
+        // Click on the body to interact with the page in order to "beforeunload" being
+        // triggered when the tab is closed.
+        await mapperCdpClient.sendCommand('Runtime.evaluate', {
+            expression: 'document.body.click()',
+            userGesture: true,
+        });
+        // Create and activate new tab with a blank page.
+        await browserClient.sendCommand('Target.createTarget', {
+            url: 'about:blank',
+        });
+        const bidiSession = new SimpleTransport(async (message) => await this.#sendMessage(mapperCdpClient, message));
+        // Process responses from the mapper tab.
+        mapperCdpClient.on('Runtime.bindingCalled', (params) => this.#onBindingCalled(params, bidiSession));
+        // Forward console messages from the mapper tab.
+        mapperCdpClient.on('Runtime.consoleAPICalled', this.#onConsoleAPICalled);
+        // Catch unhandled exceptions in the mapper.
+        mapperCdpClient.on('Runtime.exceptionThrown', this.#onRuntimeExceptionThrown);
+        await mapperCdpClient.sendCommand('Runtime.enable');
+        await browserClient.sendCommand('Target.exposeDevToolsProtocol', {
+            bindingName: 'cdp',
+            targetId: mapperTabTargetId,
+        });
+        await mapperCdpClient.sendCommand('Runtime.addBinding', {
+            name: 'sendBidiResponse',
+        });
+        if (verbose) {
+            // Needed to request verbose logs from Mapper.
+            await mapperCdpClient.sendCommand('Runtime.addBinding', {
+                name: 'sendDebugMessage',
+            });
+        }
+        // Evaluate Mapper Tab sources in the tab.
+        await mapperCdpClient.sendCommand('Runtime.evaluate', {
+            expression: mapperTabSource,
+        });
+        // TODO: handle errors in all these evaluate calls!
+        await mapperCdpClient.sendCommand('Runtime.evaluate', {
+            expression: `window.runMapperInstance('${mapperTabTargetId}')`,
+            awaitPromise: true,
+        });
+        debugInternal('Mapper is launched!');
+        return bidiSession;
+    }
+}
+//# sourceMappingURL=MapperCdpConnection.js.map