mpp 0.12.0

Rust SDK for the Machine Payments Protocol (MPP)
Documentation 
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#![cfg(feature = "sqlite")]

use alloy::primitives::{Address, B256};
use mpp::{
    client::tempo::session::store::{
        ChannelStore, SqliteChannelStore, SqliteChannelStoreOptions, StoredChannelEntry,
    },
    protocol::methods::tempo::session::ChannelDescriptor,
};

fn interop_entry(cumulative_amount: u128) -> StoredChannelEntry {
    StoredChannelEntry {
        channel_id: B256::repeat_byte(0x11),
        cumulative_amount,
        deposit: 10_000_000,
        descriptor: ChannelDescriptor {
            authorized_signer: "0x0000000000000000000000000000000000000001".into(),
            expiring_nonce_hash: format!("{:#x}", B256::repeat_byte(0x22)),
            operator: format!("{:#x}", Address::ZERO),
            payee: "0x0000000000000000000000000000000000000002".into(),
            payer: "0x0000000000000000000000000000000000000003".into(),
            salt: format!("{:#x}", B256::repeat_byte(0x33)),
            token: "0x0000000000000000000000000000000000000004".into(),
        },
        settlement_route: None,
        escrow: "0x0000000000000000000000000000000000000005"
            .parse()
            .unwrap(),
        chain_id: 4217,
        opened: true,
    }
}

/// Opt-in handoff test for a physical database created by MPPx's Node store.
///
/// Set `MPPX_CHANNEL_DB` to the generated `channels.db`, run this ignored
/// test, then read the row again from MPPx. Rust must observe 2,000,000 and
/// MPPx must observe the monotonic Rust update to 3,000,000.
#[tokio::test]
#[ignore = "requires MPPX_CHANNEL_DB generated by the MPPx Node SQLite store"]
async fn mppx_and_rust_share_the_same_channel_database() {
    let path = std::env::var_os("MPPX_CHANNEL_DB").expect("set MPPX_CHANNEL_DB");
    let store = SqliteChannelStore::open(SqliteChannelStoreOptions {
        namespace: "https://api.example.com".into(),
        path: Some(path.into()),
        request_url: None,
    })
    .unwrap();
    let initial = interop_entry(2_000_000);
    assert_eq!(store.get(&initial.key()).await.unwrap(), Some(initial));

    store.set(&interop_entry(3_000_000)).await.unwrap();
    assert_eq!(
        store
            .get(&interop_entry(0).key())
            .await
            .unwrap()
            .unwrap()
            .cumulative_amount,
        3_000_000
    );
}