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// Copyright 2017-2020 Parity Technologies (UK) Ltd.
// This file is part of Polkadot.
// Polkadot is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Polkadot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.
//! Polkadot Client meta trait
use sp_api::{ProvideRuntimeApi, ConstructRuntimeApi, CallApiAt};
use sp_blockchain::HeaderBackend;
use sp_runtime::traits::Block as BlockT;
use sc_client_api::{Backend as BackendT, BlockchainEvents};
/// Polkadot client abstraction, this super trait only pulls in functionality required for
/// polkadot internal crates like polkadot-collator.
pub trait PolkadotClient<Block, Backend, Runtime>:
BlockchainEvents<Block> + Sized + Send + Sync
+ ProvideRuntimeApi<Block, Api = Runtime::RuntimeApi>
+ HeaderBackend<Block>
+ CallApiAt<
Block,
Error = sp_blockchain::Error,
StateBackend = Backend ::State
>
where
Block: BlockT,
Backend: BackendT<Block>,
Runtime: ConstructRuntimeApi<Block, Self>
{}
impl<Block, Backend, Runtime, Client> PolkadotClient<Block, Backend, Runtime> for Client
where
Block: BlockT,
Runtime: ConstructRuntimeApi<Block, Self>,
Backend: BackendT<Block>,
Client: BlockchainEvents<Block> + ProvideRuntimeApi<Block, Api = Runtime::RuntimeApi> + HeaderBackend<Block>
+ Sized + Send + Sync
+ CallApiAt<
Block,
Error = sp_blockchain::Error,
StateBackend = Backend ::State
>
{}