Struct AppDataInfo 

pub struct AppDataInfo {
    pub cid: String,
    pub app_data_content: String,
    pub app_data_hex: String,
}

Full app-data information derived from an AppDataDoc.

Bundles the three representations of an order’s app-data that are needed at different stages of the order lifecycle:

• cid — used to store/retrieve the document on IPFS.
• app_data_content — the canonical JSON whose keccak256 equals app_data_hex. Pin this string on IPFS so solvers can read the metadata.
• app_data_hex — the 32-byte value placed in the on-chain order struct.

Obtain an instance via get_app_data_info or MetadataApi::get_app_data_info.

Example

use cow_app_data::{AppDataDoc, get_app_data_info};

let doc = AppDataDoc::new("MyDApp");
let info = get_app_data_info(&doc).unwrap();
assert!(info.app_data_hex.starts_with("0x"));
assert!(info.cid.starts_with('f'));
assert!(info.app_data_content.contains("MyDApp"));

Fields

cid: String

IPFS CIDv1 string for the order’s app-data.

app_data_content: String

Canonical JSON string whose keccak256 equals Self::app_data_hex.

app_data_hex: String

0x-prefixed 32-byte hex used as appData in the on-chain order struct.

Implementations

impl AppDataInfo

pub fn new( cid: impl Into<String>, app_data_content: impl Into<String>, app_data_hex: impl Into<String>, ) -> Self

Construct an AppDataInfo from its three constituent fields.

Prefer get_app_data_info to derive all three values from an AppDataDoc automatically. Use this constructor only when you already have the CID, JSON content, and hex hash from an external source.

Parameters

• cid — the IPFS CIDv1 base16 string.
• app_data_content — the canonical JSON string.
• app_data_hex — the 0x-prefixed 32-byte keccak256 hex.

Returns

A new AppDataInfo instance.

Trait Implementations

impl Clone for AppDataInfo

fn clone(&self) -> AppDataInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AppDataInfo

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

Formats the value using the given formatter.

impl Display for AppDataInfo

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

Formats the value using the given formatter.