How to use the @tanker/stream-base.ResizerStream function in @tanker/stream-base

To help you get started, we’ve selected a few @tanker/stream-base examples, based on popular ways it is used in public projects.

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github TankerHQ / sdk-js / packages / core / src / DataProtection / EncryptorStream.js View on Github external
_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);
        }
github TankerHQ / sdk-js / packages / core / src / CloudStorage / CloudStorageManager.js View on Github external
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;
  }
github TankerHQ / sdk-js / packages / core / src / DataProtection / DecryptorStream.js View on Github external
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) {

@tanker/stream-base

Tanker Stream SDK

Apache-2.0
Latest version published 5 months ago

Package Health Score

68 / 100
Full package analysis

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