use crate::{
error,
params::{BlockNumberOrHash, DatabaseParams, PruningParams, SharedParams},
CliConfiguration,
};
use clap::Parser;
use log::info;
use sc_client_api::{HeaderBackend, StorageProvider, UsageProvider};
use sp_runtime::traits::{Block as BlockT, Header as HeaderT};
use std::{fmt::Debug, io::Write, str::FromStr, sync::Arc};
#[derive(Debug, Clone, Parser)]
pub struct ExportStateCmd {
#[arg(value_name = "HASH or NUMBER")]
pub input: Option<BlockNumberOrHash>,
#[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 ExportStateCmd {
pub async fn run<B, BA, C>(
&self,
client: Arc<C>,
mut input_spec: Box<dyn sc_service::ChainSpec>,
) -> error::Result<()>
where
B: BlockT,
C: UsageProvider<B> + StorageProvider<B, BA> + HeaderBackend<B>,
BA: sc_client_api::backend::Backend<B>,
<B::Hash as FromStr>::Err: Debug,
<<B::Header as HeaderT>::Number as FromStr>::Err: Debug,
{
info!("Exporting raw state...");
let block_id = self.input.as_ref().map(|b| b.parse()).transpose()?;
let hash = match block_id {
Some(id) => client.expect_block_hash_from_id(&id)?,
None => client.usage_info().chain.best_hash,
};
let raw_state = sc_service::chain_ops::export_raw_state(client, hash)?;
input_spec.set_storage(raw_state);
info!("Generating new chain spec...");
let json = sc_service::chain_ops::build_spec(&*input_spec, true)?;
if std::io::stdout().write_all(json.as_bytes()).is_err() {
let _ = std::io::stderr().write_all(b"Error writing to stdout\n");
}
Ok(())
}
}
impl CliConfiguration for ExportStateCmd {
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)
}
}