Add option --index-transfers to have the index track which inscript…

…ions are transferred in each block. Previously this was already enabled, using up space in the index whether it was needed or not.

src/index.rs

@@ -156,6 +156,7 @@ pub(crate) struct Index {
   genesis_block_coinbase_transaction: Transaction,
   genesis_block_coinbase_txid: Txid,
   height_limit: Option<u64>,
+  index_transfers: bool,
   no_progress_bar: bool,
   options: Options,
   unrecoverably_reorged: AtomicBool,
@@ -274,6 +275,7 @@ impl Index {
       first_inscription_height: options.first_inscription_height(),
       genesis_block_coinbase_transaction,
       height_limit: options.height_limit,
+      index_transfers: options.index_transfers,
       no_progress_bar: options.no_progress_bar,
       options: options.clone(),
       unrecoverably_reorged: AtomicBool::new(false),

src/index/updater.rs

@@ -380,7 +380,11 @@ impl<'index> Updater<'_> {
     }
 
     let mut height_to_block_hash = wtx.open_table(HEIGHT_TO_BLOCK_HASH)?;
-    let mut height_to_inscription_id = wtx.open_multimap_table(HEIGHT_TO_INSCRIPTION_ID)?;
+    let mut height_to_inscription_id = if index.index_transfers {
+      Some(wtx.open_multimap_table(HEIGHT_TO_INSCRIPTION_ID)?)
+    } else {
+      None
+    };
     let mut inscription_id_to_inscription_entry =
       wtx.open_table(INSCRIPTION_ID_TO_INSCRIPTION_ENTRY)?;
     let mut inscription_id_to_satpoint = wtx.open_table(INSCRIPTION_ID_TO_SATPOINT)?;

src/index/updater/inscription_updater.rs

@@ -22,7 +22,7 @@ enum Origin {
 pub(super) struct InscriptionUpdater<'a, 'db, 'tx> {
   flotsam: Vec<Flotsam>,
   height: u64,
-  height_to_inscription_id: &'a mut MultimapTable<'db, 'tx, u64, &'static InscriptionIdValue>,
+  height_to_inscription_id: &'a mut Option<MultimapTable<'db, 'tx, u64, &'static InscriptionIdValue>>,
   id_to_satpoint: &'a mut Table<'db, 'tx, &'static InscriptionIdValue, &'static SatPointValue>,
   value_receiver: &'a mut Receiver<u64>,
   id_to_entry: &'a mut Table<'db, 'tx, &'static InscriptionIdValue, InscriptionEntryValue>,
@@ -44,7 +44,7 @@ pub(super) struct InscriptionUpdater<'a, 'db, 'tx> {
 impl<'a, 'db, 'tx> InscriptionUpdater<'a, 'db, 'tx> {
   pub(super) fn new(
     height: u64,
-    height_to_inscription_id: &'a mut MultimapTable<'db, 'tx, u64, &'static InscriptionIdValue>,
+    height_to_inscription_id: &'a mut Option<MultimapTable<'db, 'tx, u64, &'static InscriptionIdValue>>,
     id_to_satpoint: &'a mut Table<'db, 'tx, &'static InscriptionIdValue, &'static SatPointValue>,
     value_receiver: &'a mut Receiver<u64>,
     id_to_entry: &'a mut Table<'db, 'tx, &'static InscriptionIdValue, InscriptionEntryValue>,
@@ -377,9 +377,9 @@ impl<'a, 'db, 'tx> InscriptionUpdater<'a, 'db, 'tx> {
           old_satpoint,
           new_satpoint
         );
-        self
-          .height_to_inscription_id
-          .insert(&self.height, &inscription_id)?;
+        if let Some(height_to_inscription_id) = &mut self.height_to_inscription_id {
+          height_to_inscription_id.insert(&self.height, &inscription_id)?;
+        }
         self.satpoint_to_id.remove_all(&old_satpoint.store())?;
 
         false

src/options.rs

@@ -50,6 +50,8 @@ pub(crate) struct Options {
   pub(crate) index: Option<PathBuf>,
   #[clap(long, help = "Track location of all satoshis.")]
   pub(crate) index_sats: bool,
+  #[clap(long, help = "Track transfers of inscriptions.")]
+  pub(crate) index_transfers: bool,
   #[clap(
     long,
     help = "Track location of all satoshis and the utxos that own them. Implies --index-sats."