fix: use sync instead of scan in migrate-version

docs/getting-started/migrating.md

@@ -22,7 +22,7 @@ This is important because without that metadata the new wallet may end up reusin
 1. Create new wallet
 1. Restore revealed addresses
 1. Write to new database
-1. Rescan (recommended)
+1. Sync
 
 <!-- overview -->
 ```rust title="examples/rust/migrate-version/src/main.rs"
@@ -74,8 +74,8 @@ If the given descriptors contain secret keys, then the wallet will be able to si
 ```
 
 <!-- sync -->
-Now that we have a new database and have properly restored our addresses, you'll likely want to rescan the blockchain to recover the wallet's transactions.
-Below is an example of doing a `full_scan` using `bdk_esplora` but the exact method of syncing will depend on your application.
+Now that we have a new database and have properly restored our addresses, you will want to sync with the blockchain to recover the wallet's transactions.
+Below is an example of doing a `sync` using `bdk_esplora` but the exact method of syncing will depend on your application.
 Happy migrating and see you on [v1.0][1]!
 
 ```rust title="examples/rust/migrate-version/src/main.rs"

examples/rust/migrate-version/src/main.rs

@@ -93,19 +93,18 @@ use bdk_esplora::{esplora_client, EsploraExt};
 
 let client = esplora_client::Builder::new(ESPLORA_URL).build_blocking();
 
-let request = wallet.start_full_scan().inspect({
-    let mut stdout = std::io::stdout();
-    let mut once = BTreeSet::<KeychainKind>::new();
-    move |keychain, spk_i, _| {
-        if once.insert(keychain) {
-            print!("\nScanning keychain [{:?}] ", keychain);
+let request = wallet
+    .start_sync_with_revealed_spks()
+    .inspect(|item, prog| {
+        if let SyncItem::Spk(index, script) = item {
+            let address = Address::from_script(script, NETWORK).unwrap();
+            let progress = prog.consumed() as f32 / prog.total() as f32;
+            eprintln!("[ SYNCING {:.2}% ] {:?} {}", 100.0 * progress, index, address);
+            std::io::stdout().flush().unwrap();
         }
-        print!(" {:<3}", spk_i);
-        stdout.flush().unwrap();
-    }
-});
+    });
 
-let update = client.full_scan(request, STOP_GAP, PARALLEL_REQUESTS)?;
+let update = client.sync(request, PARALLEL_REQUESTS)?;
 
 wallet.apply_update(update)?;
 wallet.persist(&mut db)?;