PDS: crude progress on MST parsing/serialization

1 files changed, 53 insertions, 0 deletions

diff --git a/adenosine-pds/src/bin/adenosine-pds-import.rs b/adenosine-pds/src/bin/adenosine-pds-import.rs
new file mode 100644
index 0000000..37ea6eb
--- /dev/null
+++ b/adenosine-pds/src/bin/adenosine-pds-import.rs
@@ -0,0 +1,53 @@
+/// 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
+}