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amm_keylet

Function amm_keylet 

Source
pub fn amm_keylet(issue1: &Issue, issue2: &Issue) -> Result<KeyletBytes>
Expand description

Generates an AMM keylet for a given pair of accounts and currency code.

An AMM keylet is used to reference AMM entries in the XRP Ledger.

§Arguments

  • issue1 - The first Issue in the AMM relationship
  • issue2 - The second Issue in the AMM relationship

§Returns

  • Result<KeyletBytes> - On success, returns a 32-byte AMM keylet. On failure, returns an Error with the corresponding error code.

§Safety

This function makes unsafe FFI calls to the host environment through the host::amm_keylet function.

§Example

use xrpl_wasm_stdlib::core::types::account_id::AccountID;
use xrpl_wasm_stdlib::core::types::issue::{Issue, XrpIssue, IouIssue};
use xrpl_wasm_stdlib::core::types::currency::Currency;
use xrpl_wasm_stdlib::core::keylets::amm_keylet;
use xrpl_wasm_stdlib::host::trace::{DataRepr, trace_data, trace_num};
fn main() -> Result<(), Box<dyn std::error::Error>> {
 let issue1: Issue = Issue::XRP(XrpIssue {});
 let issuer: AccountID =
   AccountID::from(*b"\xd5\xb9\x84VP\x9f \xb5'\x9d\x1eJ.\xe8\xb2\xaa\x82\xaec\xe3");
 let currency = b"RLUSD\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"; // RLUSD currency code
 let currency: Currency = Currency::from(*currency);
 let issue2 = Issue::IOU(IouIssue::new(issuer, currency));
 match amm_keylet(&issue1, &issue2) {
   xrpl_wasm_stdlib::host::Result::Ok(keylet) => {
     let _ = trace_data("Generated keylet", &keylet, DataRepr::AsHex);
   }
   xrpl_wasm_stdlib::host::Result::Err(e) => {
     let _ = trace_num("Error assembling keylet", e.code() as i64);
   }
 }
 Ok(())
}