0.1.0 Update: denote in red

Dependencies

• OutSystems UI (built-in)
• Binary Concat

Architecture

MultipartUpload_CW (Core Widget) → MultipartUpload_API (Exposed API) → MultipartUpload_CS (Core Service)

Detailed Functionalities

1. MultipartUpload_CW: Exposes core functionalities of the component.

• Block
  • MultipartUpload: Upload widget enables uploading multiple large files at once.
  • MultipartUpload_CSV: New block specialized for uploading large CSV files efficiently by splitting them into 10MB chunks (ending at line boundaries), appending headers to each chunk, and uploading these as individual parts.
    • Ideal for data import scenarios, allowing batch processing of CSV data for reliability and performance.
• Client Actions
  • FileDownload: Download a file locally using REST API instead of OutSystems' Download Action given the File UID. Improved upload speed with progress tracking by the browser.
• Server Actions
  • FileDelete: Delete a file from the database given the File UID.
  • FileGet: Get the file information & binary from the database given the File UID.

2. MultipartUpload_API: REST API for file uploading & downloading.

• Integrations/REST/v1: Expose methods for single & multi-part file uploading, enables file download through REST API.
• Service Actions
  • GetPreSignedUrl_Download
  • GetPreSignedUrl_Multiple
  • GetPreSignedUrl_Single

3. MultipartUpload_CS: Database tables and Server Actions to support file uploading, downloading, and concatenating binary chunks.

• Database tables
  • File: File information (name, size, content-type).
  • FileBinary: File actual binary after concatenating chunks/parts.
  • FilePart: File's binary chunks/parts.
• Server Actions
  • AbortMultipartUpload
  • CompleteMultipartUpload
  • CreateMultipartUpload
• Processes
  • DeleteFileParts: Invoke after concatenating file in CompleteMultipartUpload action.