mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-01 05:27:56 +00:00
Bastian Köcher
92 lines
2.5 KiB
Rust
92 lines
2.5 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) 2018-2021 Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
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// This program 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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// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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use crate::error;
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use crate::params::{DatabaseParams, SharedParams};
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use crate::CliConfiguration;
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use sc_service::DatabaseConfig;
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use std::fmt::Debug;
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use std::fs;
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use std::io::{self, Write};
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use structopt::StructOpt;
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/// The `purge-chain` command used to remove the whole chain.
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#[derive(Debug, StructOpt, Clone)]
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pub struct PurgeChainCmd {
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/// Skip interactive prompt by answering yes automatically.
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#[structopt(short = "y")]
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pub yes: bool,
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#[allow(missing_docs)]
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#[structopt(flatten)]
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pub shared_params: SharedParams,
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#[allow(missing_docs)]
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#[structopt(flatten)]
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pub database_params: DatabaseParams,
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}
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impl PurgeChainCmd {
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/// Run the purge command
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pub fn run(&self, database_config: DatabaseConfig) -> error::Result<()> {
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let db_path = database_config.path()
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.ok_or_else(||
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error::Error::Input("Cannot purge custom database implementation".into())
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)?;
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if !self.yes {
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print!("Are you sure to remove {:?}? [y/N]: ", &db_path);
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io::stdout().flush().expect("failed to flush stdout");
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let mut input = String::new();
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io::stdin().read_line(&mut input)?;
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let input = input.trim();
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match input.chars().nth(0) {
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Some('y') | Some('Y') => {},
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_ => {
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println!("Aborted");
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return Ok(());
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},
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}
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}
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match fs::remove_dir_all(&db_path) {
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Ok(_) => {
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println!("{:?} removed.", &db_path);
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Ok(())
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},
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Err(ref err) if err.kind() == io::ErrorKind::NotFound => {
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eprintln!("{:?} did not exist.", &db_path);
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Ok(())
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},
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Err(err) => Result::Err(err.into()),
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}
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}
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}
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impl CliConfiguration for PurgeChainCmd {
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fn shared_params(&self) -> &SharedParams {
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&self.shared_params
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}
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fn database_params(&self) -> Option<&DatabaseParams> {
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Some(&self.database_params)
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}
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}
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