Struct S3Helpers

pub struct S3Helpers {}

Helper utilities for S3 operations. Provides methods for file size retrieval and appending content to S3 objects.

Implementations

impl S3Helpers

pub async fn get_file_size( client: &Client, bucket: &str, key: &str, ) -> Result<i64>

Retrieves the size of a file in S3.

Arguments

• client - The AWS S3 client
• bucket - The S3 bucket name
• key - The S3 object key

Returns

• Ok(i64) - The file size in bytes, or 0 if the file doesn’t exist
• Err(anyhow::Error) - If the head object operation fails

pub async fn append_to_file( client: &Client, bucket: &str, key: &str, content_to_append: &str, ) -> Result<u64>

Appends content to an existing S3 object or creates a new one if it doesn’t exist. Uses S3’s write_offset_bytes feature for efficient appending.

Arguments

• client - The AWS S3 client
• bucket - The S3 bucket name
• key - The S3 object key
• content_to_append - The content to append to the file

Returns

• Ok(u64) - The total file size after appending
• Err(anyhow::Error) - If the append operation fails