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pezkuwi-subxt/substrate/bin/node/rpc-client/src/main.rs
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Bastian Köcher c44aba89e6 Upgrade jsonrpc to 0.18.0 (#9547)
* Upgrade jsonrpc to 0.18.0

I think this says all :P

* 🤦

* Fmt etc

* Fix tests

* Fix tests again...

* Better impl

* Revert "Tell dependabot to ignore jsonrpc-* updates (#9518)"

This reverts commit 6e0cd5587d.
2021-08-13 06:46:07 +00:00

64 lines
2.1 KiB
Rust

// This file is part of Substrate.
// Copyright (C) 2019-2021 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#![warn(missing_docs)]
//! Example substrate RPC client code.
//!
//! This module shows how you can write a Rust RPC client that connects to a running
//! substrate node and use statically typed RPC wrappers.
use futures::{Future, TryFutureExt};
use jsonrpc_core_client::{transports::http, RpcError};
use node_primitives::Hash;
use sc_rpc::author::{hash::ExtrinsicOrHash, AuthorClient};
fn main() -> Result<(), RpcError> {
sp_tracing::try_init_simple();
futures::executor::block_on(async {
let uri = "http://localhost:9933";
http::connect(uri)
.and_then(|client: AuthorClient<Hash, Hash>| remove_all_extrinsics(client))
.await
})
}
/// Remove all pending extrinsics from the node.
///
/// The example code takes `AuthorClient` and first:
/// 1. Calls the `pending_extrinsics` method to get all extrinsics in the pool.
/// 2. Then calls `remove_extrinsic` passing the obtained raw extrinsics.
///
/// As the result of running the code the entire content of the transaction pool is going
/// to be removed and the extrinsics are going to be temporarily banned.
fn remove_all_extrinsics(
client: AuthorClient<Hash, Hash>,
) -> impl Future<Output = Result<(), RpcError>> {
client
.pending_extrinsics()
.and_then(move |pending| {
client.remove_extrinsic(
pending.into_iter().map(|tx| ExtrinsicOrHash::Extrinsic(tx.into())).collect(),
)
})
.map_ok(|removed| {
println!("Removed extrinsics: {:?}", removed);
})
}