Configuring Backblaze B2 for File Uploads

Backblaze B2 is a cloud storage solution that provides scalable and affordable storage for files. Integrating Backblaze B2 with your FastAPI application allows you to handle file uploads efficiently and securely.

Installing Required Libraries

Install the backblaze-b2 library:

Bash

pip install backblaze-b2

Configuring Backblaze B2

1. Create a Backblaze B2 account and obtain your application key ID and application key.
2. Create a bucket to store your files.

Creating a B2 Client

Python

import backblaze_b2

b2 = backblaze_b2.B2(application_key_id="your_application_key_id", application_key= "your_application_key")

Uploading Files

Python

from fastapi import UploadFile, File

@app.post("/upload")
async def upload_file(file: UploadFile = File(...)):
    bucket_name = "your_bucket_name"
    filename = file.filename

    with file.file as f:
        file_info = b2.upload_file(bucket_name, filename, f)

    return {"message": "File uploaded successfully", "file_url": file_info.file_url}

Retrieving Files

Python

@app.get("/download/{file_name}")
async def download_file(file_name: str):
    bucket_name = "your_bucket_name"

    file_info = b2.get_file_info_by_name(bucket_name, file_name)
    download_url = file_info.download_url

    return {"file_url": download_url}

By integrating Backblaze B2 with your FastAPI application, you can provide a scalable and efficient file storage solution for your users.