mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
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Bastian Köcher
e3e651f72c
* Happy new year Updates the copyright years and fixes wrong license headers. * Fix the template * Split HEADER into HEADER-APACHE & HEADER-GPL
72 lines
2.1 KiB
Rust
72 lines
2.1 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) 2019-2021 Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#![warn(missing_docs)]
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//! Example substrate RPC client code.
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//!
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//! This module shows how you can write a Rust RPC client that connects to a running
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//! substrate node and use statically typed RPC wrappers.
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use futures::Future;
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use hyper::rt;
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use node_primitives::Hash;
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use sc_rpc::author::{
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AuthorClient,
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hash::ExtrinsicOrHash,
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};
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use jsonrpc_core_client::{
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transports::http,
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RpcError,
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};
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fn main() {
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sp_tracing::try_init_simple();
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rt::run(rt::lazy(|| {
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let uri = "http://localhost:9933";
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http::connect(uri)
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.and_then(|client: AuthorClient<Hash, Hash>| {
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remove_all_extrinsics(client)
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})
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.map_err(|e| {
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println!("Error: {:?}", e);
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})
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}))
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}
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/// Remove all pending extrinsics from the node.
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///
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/// The example code takes `AuthorClient` and first:
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/// 1. Calls the `pending_extrinsics` method to get all extrinsics in the pool.
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/// 2. Then calls `remove_extrinsic` passing the obtained raw extrinsics.
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///
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/// As the result of running the code the entire content of the transaction pool is going
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/// to be removed and the extrinsics are going to be temporarily banned.
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fn remove_all_extrinsics(client: AuthorClient<Hash, Hash>) -> impl Future<Item=(), Error=RpcError> {
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client.pending_extrinsics()
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.and_then(move |pending| {
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client.remove_extrinsic(
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pending.into_iter().map(|tx| ExtrinsicOrHash::Extrinsic(tx.into())).collect()
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)
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})
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.map(|removed| {
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println!("Removed extrinsics: {:?}", removed);
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})
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}
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