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| // Licensed to the Apache Software Foundation (ASF) under one | |
| // or more contributor license agreements. See the NOTICE file | |
| // distributed with this work for additional information | |
| // regarding copyright ownership. The ASF licenses this file | |
| // to you 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. | |
| Object.defineProperty(exports, "__esModule", { value: true }); | |
| exports.recordBatchWriterThroughDOMStream = void 0; | |
| const tslib_1 = require("tslib"); | |
| const stream_js_1 = require("../../io/stream.js"); | |
| /** @ignore */ | |
| function recordBatchWriterThroughDOMStream(writableStrategy, readableStrategy) { | |
| const writer = new this(writableStrategy); | |
| const reader = new stream_js_1.AsyncByteStream(writer); | |
| const readable = new ReadableStream({ | |
| // type: 'bytes', | |
| cancel() { | |
| return tslib_1.__awaiter(this, void 0, void 0, function* () { yield reader.cancel(); }); | |
| }, | |
| pull(controller) { | |
| return tslib_1.__awaiter(this, void 0, void 0, function* () { yield next(controller); }); | |
| }, | |
| start(controller) { | |
| return tslib_1.__awaiter(this, void 0, void 0, function* () { yield next(controller); }); | |
| }, | |
| }, Object.assign({ 'highWaterMark': Math.pow(2, 14) }, readableStrategy)); | |
| return { writable: new WritableStream(writer, writableStrategy), readable }; | |
| function next(controller) { | |
| return tslib_1.__awaiter(this, void 0, void 0, function* () { | |
| let buf = null; | |
| let size = controller.desiredSize; | |
| while (buf = yield reader.read(size || null)) { | |
| controller.enqueue(buf); | |
| if (size != null && (size -= buf.byteLength) <= 0) { | |
| return; | |
| } | |
| } | |
| controller.close(); | |
| }); | |
| } | |
| } | |
| exports.recordBatchWriterThroughDOMStream = recordBatchWriterThroughDOMStream; | |
| //# sourceMappingURL=writer.js.map | |