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_initializeStreams() {
this._resizerStream = new ResizerStream(this._maxClearChunkSize);
this._encryptorStream = new Transform({
// buffering input bytes until clear chunk size is reached
writableHighWaterMark: this._maxClearChunkSize,
writableObjectMode: false,
// buffering output bytes until encrypted chunk size is reached
readableHighWaterMark: this._maxEncryptedChunkSize,
readableObjectMode: false,
transform: (clearData, encoding, done) => {
try {
const encryptedChunk = this._encryptChunk(clearData);
this._encryptorStream.push(encryptedChunk);
} catch (err) {
return done(err);
}
const uploader = new UploadStream(urls, headers, totalEncryptedSize, recommendedChunkSize, encryptedMetadata);
const progressHandler = new ProgressHandler(progressOptions).start(totalEncryptedSize);
uploader.on('uploaded', (chunk: Uint8Array) => progressHandler.report(chunk.byteLength));
const streams = [slicer, encryptor];
// Some version of Edge (e.g. version 18) fail to handle the 308 HTTP status used by
// GCS in a non-standard way (no redirection expected) when uploading in chunks. So we
// add a merger stream before the uploader to ensure there's a single upload request
// returning the 200 HTTP status.
if (service === 'GCS' && isEdge()) {
const merger = new MergerStream({ type: Uint8Array });
streams.push(merger);
} else if (service === 'S3') {
const resizer = new ResizerStream(recommendedChunkSize);
streams.push(resizer);
}
streams.push(uploader);
await pipeStreams({ streams, resolveEvent: 'finish' });
return resourceId;
}
async _initializeStreams(headOfEncryptedData: Uint8Array) {
let encryptedChunkSize;
let resourceId;
try {
({ encryptedChunkSize, resourceId } = encryptionV4.unserialize(headOfEncryptedData));
} catch (e) {
throw new InvalidArgument('encryptedData', e, headOfEncryptedData);
}
const key = await this._mapper.findKey(resourceId);
this._state.maxEncryptedChunkSize = encryptedChunkSize;
this._resizerStream = new ResizerStream(encryptedChunkSize);
const b64ResourceId = utils.toBase64(resourceId);
this._decryptionStream = new Transform({
// buffering input bytes until encrypted chunk size is reached
writableHighWaterMark: encryptedChunkSize,
writableObjectMode: false,
// buffering output bytes until clear chunk size is reached
readableHighWaterMark: encryptedChunkSize - encryptionV4.overhead,
readableObjectMode: false,
transform: (encryptedChunk, encoding, done) => {
try {
const clearData = encryptionV4.decrypt(key, this._state.index, encryptionV4.unserialize(encryptedChunk));
this._decryptionStream.push(clearData);
} catch (error) {