Struct Attachment 

pub struct Attachment {
    pub data: Vec<u8>,
    pub media_type: String,
}

Image attachment for multi-modal messages.

Supports JPEG, PNG, GIF, and WebP. Data is stored as raw bytes and base64-encoded when serialized for LLM APIs.

Fields

data: Vec<u8>

Raw image bytes

media_type: String

MIME type (e.g., "image/jpeg", "image/png")

Implementations

impl Attachment

pub fn new(data: Vec<u8>, media_type: impl Into<String>) -> Self

Create an attachment from raw bytes and media type.

pub fn jpeg(data: Vec<u8>) -> Self

Create a JPEG attachment.

pub fn png(data: Vec<u8>) -> Self

Create a PNG attachment.

pub fn gif(data: Vec<u8>) -> Self

Create a GIF attachment.

pub fn webp(data: Vec<u8>) -> Self

Create a WebP attachment.

pub fn from_file(path: impl AsRef<Path>) -> Result<Self>

Read an image file and auto-detect media type from extension.

pub fn base64_data(&self) -> String

Return the base64-encoded data.

pub fn to_content_block(&self) -> ContentBlock

Convert to a ContentBlock::Image.

Trait Implementations

impl Clone for Attachment

fn clone(&self) -> Attachment

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Attachment

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.