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Текущая директория: /opt/BitGoJS/node_modules/@hashgraph/sdk/lib/channel
Просмотр файла: NativeChannel.cjs

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _Channel = _interopRequireWildcard(require("./Channel.cjs"));
var base64 = _interopRequireWildcard(require("../encoding/base64.native.cjs"));
var _HttpError = _interopRequireDefault(require("../http/HttpError.cjs"));
var _HttpStatus = _interopRequireDefault(require("../http/HttpStatus.cjs"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
/*-
 * ‌
 * Hedera JavaScript SDK
 * 
 * Copyright (C) 2020 - 2022 Hedera Hashgraph, LLC
 * 
 * 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.
 * ‍
 */

class NativeChannel extends _Channel.default {
  /**
   * @param {string} address
   */
  constructor(address) {
    super();

    /**
     * @type {string}
     * @private
     */
    this._address = address;
  }

  /**
   * @override
   * @returns {void}
   */
  close() {
    // do nothing
  }

  /**
   * @override
   * @protected
   * @param {string} serviceName
   * @returns {import("protobufjs").RPCImpl}
   */
  _createUnaryClient(serviceName) {
    // eslint-disable-next-line @typescript-eslint/no-misused-promises
    return async (method, requestData, callback) => {
      try {
        const data = base64.encode(new Uint8Array((0, _Channel.encodeRequest)(requestData)));
        const response = await fetch(`${this._address}/proto.${serviceName}/${method.name}`, {
          method: "POST",
          headers: {
            "content-type": "application/grpc-web-text",
            "x-user-agent": "hedera-sdk-js/v2",
            "x-accept-content-transfer-encoding": "base64",
            "x-grpc-web": "1"
          },
          body: data
        });
        if (!response.ok) {
          const error = new _HttpError.default(_HttpStatus.default._fromValue(response.status));
          callback(error, null);
        }
        const blob = await response.blob();

        /** @type {string} */
        const responseData = await new Promise((resolve, reject) => {
          const reader = new FileReader();
          reader.readAsDataURL(blob);
          reader.onloadend = () => {
            resolve( /** @type {string} */reader.result);
          };
          reader.onerror = reject;
        });
        let responseBuffer;
        if (responseData.startsWith("data:application/octet-stream;base64,")) {
          responseBuffer = base64.decode(responseData.split("data:application/octet-stream;base64,")[1]);
        } else if (responseData.startsWith("data:application/grpc-web+proto;base64,")) {
          responseBuffer = base64.decode(responseData.split("data:application/grpc-web+proto;base64,")[1]);
        } else {
          throw new Error(`Expected response data to be base64 encode with a 'data:application/octet-stream;base64,' or 'data:application/grpc-web+proto;base64,' prefix, but found: ${responseData}`);
        }
        const unaryResponse = (0, _Channel.decodeUnaryResponse)(responseBuffer.buffer, responseBuffer.byteOffset, responseBuffer.byteLength);
        callback(null, unaryResponse);
      } catch (error) {
        callback( /** @type {Error} */error, null);
      }
    };
  }
}
exports.default = NativeChannel;
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