Using Amazon s3 boto library, how to get the URL of a saved key?

Using Amazon s3 boto library, how to get the URL of a saved key?

To get the URL of a saved object (key) in an Amazon S3 bucket using the Boto library in Python, you can follow these steps:

  1. Import the necessary libraries and configure your AWS credentials.
  2. Create an S3 client or resource object.
  3. Specify the bucket name and object (key) name.
  4. Use the generate_presigned_url() method to generate a pre-signed URL for the object.

Here's an example:

import boto3 # Configure your AWS credentials (you can also use environment variables or IAM roles) aws_access_key_id = 'YOUR_ACCESS_KEY' aws_secret_access_key = 'YOUR_SECRET_KEY' aws_region = 'us-east-1' # Replace with your desired AWS region # Initialize an S3 client s3 = boto3.client('s3', aws_access_key_id=aws_access_key_id, aws_secret_access_key=aws_secret_access_key, region_name=aws_region) # Specify the bucket name and object (key) name bucket_name = 'your-bucket-name' object_key = 'your-object-key' # Generate a pre-signed URL for the object (valid for a specific duration, e.g., 3600 seconds) url = s3.generate_presigned_url('get_object', Params={'Bucket': bucket_name, 'Key': object_key}, ExpiresIn=3600) # Adjust the expiration time as needed print(f"Presigned URL for {object_key}: {url}")

Make sure to replace 'YOUR_ACCESS_KEY', 'YOUR_SECRET_KEY', 'us-east-1', 'your-bucket-name', and 'your-object-key' with your actual AWS credentials, region, bucket name, and object key.

The generated URL will allow you to access the object for a limited time (defined by ExpiresIn in seconds). You can adjust the expiration time to meet your requirements.

Examples

  1. "How to generate a public URL for an S3 object using Boto3"

    • Description: Use Boto3 to get the public URL of a saved object in Amazon S3.

    • Code:

      # Make sure boto3 is installed !pip install boto3 
      import boto3 # Initialize S3 client s3 = boto3.client('s3') # Get public URL for an S3 object bucket_name = 'my-bucket' key = 'path/to/my-object.txt' url = f"https://{bucket_name}.s3.amazonaws.com/{key}" print("Public URL:", url)

  2. "How to generate a pre-signed URL for an S3 object with Boto3"

    • Description: Create a pre-signed URL for an S3 object using Boto3 to allow temporary access.
    • Code:
      import boto3 # Initialize S3 client s3 = boto3.client('s3') # Generate a pre-signed URL for an S3 object bucket_name = 'my-bucket' key = 'path/to/my-object.txt' presigned_url = s3.generate_presigned_url( 'get_object', Params={'Bucket': bucket_name, 'Key': key}, ExpiresIn=3600 # URL will be valid for 1 hour ) print("Pre-signed URL:", presigned_url)

  3. "Using Boto3 to get S3 object URL with custom domain"

    • Description: Generate a URL for an S3 object using a custom domain or bucket endpoint.
    • Code:
      import boto3 # Initialize S3 client with a custom endpoint s3 = boto3.client('s3', endpoint_url='https://my-custom-domain.com') # Generate a URL for an S3 object bucket_name = 'my-bucket' key = 'path/to/my-object.txt' custom_url = f"https://my-custom-domain.com/{bucket_name}/{key}" print("Custom URL:", custom_url)

  4. "Getting the URL for a versioned S3 object using Boto3"

    • Description: Retrieve the URL of a specific version of an S3 object with Boto3.
    • Code:
      import boto3 s3 = boto3.client('s3') bucket_name = 'my-bucket' key = 'path/to/versioned-object.txt' version_id = 'L4srdDlkQ3ZfJpZIzs1VRGHK38JS9' # Generate a URL for a versioned S3 object versioned_url = f"https://{bucket_name}.s3.amazonaws.com/{key}?versionId={version_id}" print("Versioned object URL:", versioned_url)

  5. "Using Boto3 to get a secure HTTPS URL for an S3 object"

    • Description: Generate a secure HTTPS URL for a saved key in Amazon S3 using Boto3.
    • Code:
      import boto3 s3 = boto3.client('s3') bucket_name = 'my-secure-bucket' key = 'path/to/secure-object.txt' # Secure HTTPS URL secure_url = f"https://{bucket_name}.s3.amazonaws.com/{key}" print("Secure URL:", secure_url)

  6. "Get a public URL for a saved S3 key in a specific AWS region with Boto3"

    • Description: Generate a URL for an S3 object in a specific AWS region using Boto3.
    • Code:
      import boto3 s3 = boto3.client('s3', region_name='us-west-2') bucket_name = 'my-bucket' key = 'path/to/object.txt' # URL in a specific AWS region region_url = f"https://{bucket_name}.s3.us-west-2.amazonaws.com/{key}" print("URL in specified AWS region:", region_url)

  7. "Generate a time-limited URL for downloading an S3 object with Boto3"

    • Description: Create a pre-signed URL with a specific expiration time to download an S3 object.
    • Code:
      import boto3 s3 = boto3.client('s3') bucket_name = 'my-bucket' key = 'downloads/my-file.zip' # Generate a pre-signed URL with a limited time for download download_url = s3.generate_presigned_url( 'get_object', Params={'Bucket': bucket_name, 'Key': key}, ExpiresIn=1800 # Valid for 30 minutes ) print("Time-limited download URL:", download_url)

  8. "Using Boto3 to get an S3 URL with a custom query parameter"

    • Description: Generate a URL with additional query parameters for an S3 object using Boto3.
    • Code:
      import boto3 s3 = boto3.client('s3') bucket_name = 'my-bucket' key = 'public-files/my-document.pdf' # URL with custom query parameters url_with_params = f"https://{bucket_name}.s3.amazonaws.com/{key}?param=value" print("URL with custom parameters:", url_with_params)

  9. "Get an S3 URL with access permissions using Boto3"

    • Description: Use Boto3 to get the URL of an S3 object with specific access permissions or ACLs.
    • Code:
      import boto3 s3 = boto3.client('s3') bucket_name = 'my-private-bucket' key = 'restricted-access/file.txt' # Generate a pre-signed URL with access permissions secure_url = s3.generate_presigned_url( 'get_object', Params={'Bucket': bucket_name, 'Key': key}, ExpiresIn=600 # 10 minutes ) print("Secure URL with access permissions:", secure_url)

  10. "Get a URL for an S3 object in a different AWS partition using Boto3"

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