mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-27 15:07:59 +00:00
Tomasz Drwięga
6112f815b3
* Bump jsonrpc & generate clients. * Initial version of JSON-RPC client. * Re-wort * Remove spurious `#[derive(Encode, Decode)]` They did not compile, since `Encode` and `Decode` are deliberately not implemented for `usize`. Fixes #2742. * Re-write rpc-client example. * Update to jsonrpc=12.0.0 * Remove unnecessary import * Bump version. * Revert version bump. * Bump again.
71 lines
2.1 KiB
Rust
71 lines
2.1 KiB
Rust
// Copyright 2019 Parity Technologies (UK) Ltd.
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// This file is part of Substrate.
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// Substrate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Substrate is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
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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 staticly 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 substrate_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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env_logger::init();
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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 resul 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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