pezkuwi-subxt 0.44.0

Submit extrinsics (transactions) to a Pezkuwi/Bizinikiwi node via RPC
Documentation 
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// Copyright 2019-2025 Parity Technologies (UK) Ltd.
// This file is dual-licensed as Apache-2.0 or GPL-3.0.
// see LICENSE for license details.

use super::runtime_types::RuntimeApi;

use crate::{
	backend::BlockRef,
	client::OnlineClientT,
	config::{Config, HashFor},
	error::RuntimeApiError,
};
use derive_where::derive_where;
use std::{future::Future, marker::PhantomData};

/// Execute runtime API calls.
#[derive_where(Clone; Client)]
pub struct RuntimeApiClient<T, Client> {
	client: Client,
	_marker: PhantomData<T>,
}

impl<T, Client> RuntimeApiClient<T, Client> {
	/// Create a new [`RuntimeApiClient`]
	pub fn new(client: Client) -> Self {
		Self { client, _marker: PhantomData }
	}
}

impl<T, Client> RuntimeApiClient<T, Client>
where
	T: Config,
	Client: OnlineClientT<T>,
{
	/// Obtain a runtime API interface at some block hash.
	pub fn at(&self, block_ref: impl Into<BlockRef<HashFor<T>>>) -> RuntimeApi<T, Client> {
		RuntimeApi::new(self.client.clone(), block_ref.into())
	}

	/// Obtain a runtime API interface at the latest finalized block.
	pub fn at_latest(
		&self,
	) -> impl Future<Output = Result<RuntimeApi<T, Client>, RuntimeApiError>> + Send + 'static {
		// Clone and pass the client in like this so that we can explicitly
		// return a Future that's Send + 'static, rather than tied to &self.
		let client = self.client.clone();
		async move {
			// get the ref for the latest finalized block and use that.
			let block_ref = client
				.backend()
				.latest_finalized_block_ref()
				.await
				.map_err(RuntimeApiError::CannotGetLatestFinalizedBlock)?;

			Ok(RuntimeApi::new(client, block_ref))
		}
	}
}