Files
pezkuwi-subxt/substrate/client/cli/src/commands/import_blocks_cmd.rs
T
Ashley 5f751e4472 Remove ServiceBuilderCommand and implement the chain ops as standalone functions instead. (#6543)
* :)

* Slight tidy

* Remove ServiceBuilderCommand

* Remove whitespace

* Keep task manager alive for check_block/import_blocks

* Pass task_manager to run_until_exit

* Make task_manager in run_until_exit and make subcommands async

* Change the async_run fn to return a future and task manager

* async_run should take a result fn

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Fix spaces in export_raw_state

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
2020-07-02 12:57:56 +02:00

100 lines
2.9 KiB
Rust

// This file is part of Substrate.
// Copyright (C) 2018-2020 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
// This program 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.
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
use crate::error;
use crate::params::ImportParams;
use crate::params::SharedParams;
use crate::CliConfiguration;
use sc_service::chain_ops::import_blocks;
use sp_runtime::traits::Block as BlockT;
use std::fmt::Debug;
use std::fs;
use std::io::{self, Read, Seek};
use std::path::PathBuf;
use std::sync::Arc;
use structopt::StructOpt;
use sc_client_api::UsageProvider;
/// The `import-blocks` command used to import blocks.
#[derive(Debug, StructOpt)]
pub struct ImportBlocksCmd {
/// Input file or stdin if unspecified.
#[structopt(parse(from_os_str))]
pub input: Option<PathBuf>,
/// The default number of 64KB pages to ever allocate for Wasm execution.
///
/// Don't alter this unless you know what you're doing.
#[structopt(long = "default-heap-pages", value_name = "COUNT")]
pub default_heap_pages: Option<u32>,
/// Try importing blocks from binary format rather than JSON.
#[structopt(long)]
pub binary: bool,
#[allow(missing_docs)]
#[structopt(flatten)]
pub shared_params: SharedParams,
#[allow(missing_docs)]
#[structopt(flatten)]
pub import_params: ImportParams,
}
/// Internal trait used to cast to a dynamic type that implements Read and Seek.
trait ReadPlusSeek: Read + Seek {}
impl<T: Read + Seek> ReadPlusSeek for T {}
impl ImportBlocksCmd {
/// Run the import-blocks command
pub async fn run<B, C, IQ>(
&self,
client: Arc<C>,
import_queue: IQ,
) -> error::Result<()>
where
C: UsageProvider<B> + Send + Sync + 'static,
B: BlockT + for<'de> serde::Deserialize<'de>,
IQ: sc_service::ImportQueue<B> + 'static,
{
let file: Box<dyn ReadPlusSeek + Send> = match &self.input {
Some(filename) => Box::new(fs::File::open(filename)?),
None => {
let mut buffer = Vec::new();
io::stdin().read_to_end(&mut buffer)?;
Box::new(io::Cursor::new(buffer))
}
};
import_blocks(client, import_queue, file, false, self.binary)
.await
.map_err(Into::into)
}
}
impl CliConfiguration for ImportBlocksCmd {
fn shared_params(&self) -> &SharedParams {
&self.shared_params
}
fn import_params(&self) -> Option<&ImportParams> {
Some(&self.import_params)
}
}