Get a v4 signed URL for uploading file

generateV4UploadSignedUrl.js

  async function generateV4UploadSignedUrl() {
    // The ID of your GCS bucket
    const bucketName = 'your-unique-bucket-name';

    // The full path of your file inside the GCS bucket, e.g. 'yourFile.jpg' 
    // or 'folder1/folder2/yourFile.jpg'
    const fileName = 'your-file-name';
    
    // These options will allow temporary uploading of the file with outgoing
    // Content-Type: application/octet-stream header.    
    const options = {
      version: 'v4',
      action: 'write',
      expires: Date.now() + 15 * 60 * 1000, // 15 minutes
      contentType: 'application/octet-stream',
    };

    // Get a v4 signed URL for uploading file
    const [url] = await storage
      .bucket(bucketName)
      .file(fileName)
      .getSignedUrl(options);


    console.log('Generated PUT signed URL:');
    console.log(url);
    console.log('You can use this URL with any user agent, for example:');
    console.log(
      "curl -X PUT -H 'Content-Type: application/octet-stream' " +
        `--upload-file my-file '${url}'`
    );
  }

// Full sample here: 
// https://github.com/googleapis/nodejs-storage/blob/main/samples/generateV4UploadSignedUrl.js