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/// Helper program to import an IPLD CARv1 file in to sqlite data store
use anyhow::{anyhow, Result};
use futures::TryStreamExt;
use ipfs_sqlite_block_store::BlockStore;
use iroh_car::CarReader;
use libipld::block::Block;
use tokio::fs::File;
use tokio::io::BufReader;
use std::env;
async fn load_car_to_sqlite(db_path: &str, car_path: &str) -> Result<()> {
let car_reader = {
let file = File::open(car_path).await?;
let buf_reader = BufReader::new(file);
CarReader::new(buf_reader).await?
};
let car_header = car_reader.header().clone();
let mut db: BlockStore<libipld::DefaultParams> = {
let path = std::path::PathBuf::from(db_path);
let path = ipfs_sqlite_block_store::DbPath::File(path);
BlockStore::open_path(path, Default::default())?
};
car_reader
.stream()
.try_for_each(|(cid, raw)| {
// TODO: error handling here instead of unwrap (?)
let block = Block::new(cid, raw).unwrap();
db.put_block(block, None).unwrap();
futures::future::ready(Ok(()))
})
.await?;
// pin the header
if car_header.roots().len() >= 1 {
db.alias(b"import".to_vec(), Some(&car_header.roots()[0]))?;
}
Ok(())
}
#[tokio::main]
async fn main() -> Result<()> {
let args: Vec<String> = env::args().collect();
if args.len() != 3 {
println!("expected 2 args: <db_path> <car_path>");
std::process::exit(-1);
}
let db_path = &args[1];
let car_path = &args[2];
load_car_to_sqlite(db_path, car_path).await
}
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