lmdb: migration progress

chain/src/chain.rs

@@ -43,7 +43,7 @@ use std::collections::HashMap;
 use std::fs::{self, File};
 use std::path::{Path, PathBuf};
 use std::sync::atomic::{AtomicUsize, Ordering};
-use std::sync::Arc;
+use std::sync::{mpsc, Arc};
 use std::time::{Duration, Instant};
 
 /// Orphan pool size is limited by MAX_ORPHAN_SIZE
@@ -171,8 +171,9 @@ impl Chain {
 		genesis: Block,
 		pow_verifier: fn(&BlockHeader) -> Result<(), pow::Error>,
 		archive_mode: bool,
+		db_migration_prog_tx: Option<mpsc::Sender<i8>>,
 	) -> Result<Chain, Error> {
-		let store = Arc::new(store::ChainStore::new(&db_root)?);
+		let store = Arc::new(store::ChainStore::new(&db_root, db_migration_prog_tx)?);
 
 		// open the txhashset, creating a new one if necessary
 		let mut txhashset = txhashset::TxHashSet::open(db_root.clone(), store.clone(), None)?;

chain/src/store.rs

@@ -28,7 +28,7 @@ use grin_core::ser;
 use grin_store as store;
 use grin_store::{option_to_not_found, Error};
 use std::convert::TryInto;
-use std::sync::Arc;
+use std::sync::{mpsc, Arc};
 
 const STORE_SUBPATH: &str = "chain";
 
@@ -67,13 +67,17 @@ pub struct ChainStore {
 
 impl ChainStore {
 	/// Create new chain store
-	pub fn new(db_root: &str) -> Result<ChainStore, Error> {
+	pub fn new(
+		db_root: &str,
+		db_migration_prog_tx: Option<mpsc::Sender<i8>>,
+	) -> Result<ChainStore, Error> {
 		let db = store::Store::new(
 			db_root,
 			None,
 			Some(STORE_SUBPATH),
 			DB_PREFIXES.to_vec(),
 			None,
+			db_migration_prog_tx,
 		)?;
 		Ok(ChainStore { db })
 	}