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

@@ -160,6 +160,7 @@ pub(crate) struct Index {
   genesis_block_coinbase_txid: Txid,
   height_limit: Option<u64>,
   index_runes: bool,
+  index_transfers: bool,
   index_sats: bool,
   no_progress_bar: bool,
   options: Options,
@@ -326,6 +327,7 @@ 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(),
       index_runes,

src/index/updater.rs

@@ -382,7 +382,11 @@ 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 height_to_last_sequence_number = wtx.open_table(HEIGHT_TO_LAST_SEQUENCE_NUMBER)?;
     let mut inscription_id_to_inscription_entry =
       wtx.open_table(INSCRIPTION_ID_TO_INSCRIPTION_ENTRY)?;

src/index/updater/inscription_updater.rs

@@ -24,7 +24,7 @@ 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_children:
     &'a mut MultimapTable<'db, 'tx, &'static InscriptionIdValue, &'static InscriptionIdValue>,
   id_to_satpoint: &'a mut Table<'db, 'tx, &'static InscriptionIdValue, &'static SatPointValue>,
@@ -50,7 +50,7 @@ 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_children: &'a mut MultimapTable<
       'db,
       'tx,
@@ -443,9 +443,9 @@ impl<'a, 'db, 'tx> InscriptionUpdater<'a, 'db, 'tx> {
     let inscription_id = flotsam.inscription_id.store();
     let unbound = match flotsam.origin {
       Origin::Old { old_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

@@ -49,6 +49,8 @@ pub(crate) struct Options {
   pub(crate) index_runes_pre_alpha_i_agree_to_get_rekt: bool,
   #[arg(long, help = "Track location of all satoshis.")]
   pub(crate) index_sats: bool,
+  #[clap(long, help = "Track transfers of inscriptions.")]
+  pub(crate) index_transfers: bool,
   #[arg(long, help = "Inhibit the display of the progress bar while updating the index.")]
   pub(crate) no_progress_bar: bool,
   #[arg(long, short, help = "Use regtest. Equivalent to `--chain regtest`.")]