use crate::{
error,
params::{DatabaseParams, GenericNumber, PruningParams, SharedParams},
CliConfiguration,
};
use clap::Parser;
use log::info;
use sc_client_api::{BlockBackend, HeaderBackend, UsageProvider};
use sc_service::{chain_ops::export_blocks, config::DatabaseSource};
use sp_runtime::traits::{Block as BlockT, Header as HeaderT};
use std::{fmt::Debug, fs, io, path::PathBuf, str::FromStr, sync::Arc};
#[derive(Debug, Clone, Parser)]
pub struct ExportBlocksCmd {
#[arg()]
pub output: Option<PathBuf>,
#[arg(long, value_name = "BLOCK")]
pub from: Option<GenericNumber>,
#[arg(long, value_name = "BLOCK")]
pub to: Option<GenericNumber>,
#[arg(long)]
pub binary: bool,
#[allow(missing_docs)]
#[clap(flatten)]
pub shared_params: SharedParams,
#[allow(missing_docs)]
#[clap(flatten)]
pub pruning_params: PruningParams,
#[allow(missing_docs)]
#[clap(flatten)]
pub database_params: DatabaseParams,
}
impl ExportBlocksCmd {
pub async fn run<B, C>(
&self,
client: Arc<C>,
database_config: DatabaseSource,
) -> error::Result<()>
where
B: BlockT,
C: HeaderBackend<B> + BlockBackend<B> + UsageProvider<B> + 'static,
<<B::Header as HeaderT>::Number as FromStr>::Err: Debug,
{
if let Some(path) = database_config.path() {
info!("DB path: {}", path.display());
}
let from = self.from.as_ref().and_then(|f| f.parse().ok()).unwrap_or(1u32);
let to = self.to.as_ref().and_then(|t| t.parse().ok());
let binary = self.binary;
let file: Box<dyn io::Write> = match &self.output {
Some(filename) => Box::new(fs::File::create(filename)?),
None => Box::new(io::stdout()),
};
export_blocks(client, file, from.into(), to, binary).await.map_err(Into::into)
}
}
impl CliConfiguration for ExportBlocksCmd {
fn shared_params(&self) -> &SharedParams {
&self.shared_params
}
fn pruning_params(&self) -> Option<&PruningParams> {
Some(&self.pruning_params)
}
fn database_params(&self) -> Option<&DatabaseParams> {
Some(&self.database_params)
}
}