Add search index

Cargo.toml

@@ -100,6 +100,7 @@ tokio-stream = "0.1.9"
 tokio-util = {version = "0.7.3", features = ["compat"] }
 tower-http = { version = "0.6.2", features = ["auth", "compression-br", "compression-gzip", "cors", "set-header"] }
 urlencoding = "2.1.3"
+tantivy = "0.22.0"
 
 [dev-dependencies]
 criterion = "0.5.1"

src/index.rs

@@ -1941,6 +1941,24 @@ impl Index {
     Ok((inscriptions, more))
   }
 
+  pub fn get_inscriptions(&self) -> Result<Vec<InscriptionId>> {
+    let rtx = self.database.begin_read()?;
+
+    let sequence_number_to_inscription_entry =
+      rtx.open_table(SEQUENCE_NUMBER_TO_INSCRIPTION_ENTRY)?;
+
+    let inscriptions = sequence_number_to_inscription_entry
+      .iter()?
+      .map(|result| {
+        result
+          .map(|(_number, entry)| InscriptionEntry::load(entry.value()).id)
+          .map_err(|err| anyhow!(err))
+      })
+      .collect::<Result<Vec<InscriptionId>>>()?;
+
+    Ok(inscriptions)
+  }
+
   pub fn get_inscriptions_in_block(&self, block_height: u32) -> Result<Vec<InscriptionId>> {
     let rtx = self.database.begin_read()?;
 

src/lib.rs

@@ -30,6 +30,7 @@ use {
     properties::Properties,
     representation::Representation,
     satscard::Satscard,
+    search_index::SearchIndex,
     settings::Settings,
     signer::Signer,
     subcommand::{OutputFormat, Subcommand, SubcommandResult},
@@ -132,6 +133,7 @@ mod re;
 mod representation;
 pub mod runes;
 mod satscard;
+mod search_index;
 pub mod settings;
 mod signer;
 pub mod subcommand;
@@ -148,6 +150,7 @@ const TARGET_POSTAGE: Amount = Amount::from_sat(10_000);
 static SHUTTING_DOWN: AtomicBool = AtomicBool::new(false);
 static LISTENERS: Mutex<Vec<axum_server::Handle>> = Mutex::new(Vec::new());
 static INDEXER: Mutex<Option<thread::JoinHandle<()>>> = Mutex::new(None);
+static SEARCH_INDEXER: Mutex<Option<thread::JoinHandle<()>>> = Mutex::new(None);
 
 #[doc(hidden)]
 #[derive(Deserialize, Serialize)]
@@ -279,6 +282,14 @@ fn gracefully_shut_down_indexer() {
       log::warn!("Index thread panicked; join failed");
     }
   }
+
+  if let Some(search_indexer) = SEARCH_INDEXER.lock().unwrap().take() {
+    shut_down();
+    log::info!("Waiting for search index thread to finish...");
+    if search_indexer.join().is_err() {
+      log::warn!("Search index thread panicked; join failed");
+    }
+  }
 }
 
 pub fn main() {

src/options.rs

@@ -73,6 +73,8 @@ pub struct Options {
     help = "Do not index inscriptions."
   )]
   pub(crate) no_index_inscriptions: bool,
+  #[arg(long, help = "Use search index at <SEARCH_INDEX>.")]
+  pub(crate) search_index: Option<PathBuf>,
   #[arg(
     long,
     help = "Require basic HTTP authentication with <SERVER_PASSWORD>. Credentials are sent in cleartext. Consider using authentication in conjunction with HTTPS."

src/search_index.rs

@@ -0,0 +1,210 @@
+use {
+  super::*,
+  crate::subcommand::server::query,
+  tantivy::{
+    collector::{Count, TopDocs},
+    directory::MmapDirectory,
+    query::QueryParser,
+    schema::{
+      document::OwnedValue, DateOptions, DateTimePrecision, Field, Schema as TantivySchema,
+      INDEXED, STORED, STRING,
+    },
+    DateTime, Index as TantivyIndex, IndexReader, IndexWriter, ReloadPolicy, TantivyDocument,
+  },
+};
+
+#[derive(Clone)]
+struct Schema {
+  inscription_id: Field,
+  charm: Field,
+  sat_name: Field,
+  timestamp: Field,
+}
+
+impl Schema {
+  fn default_search_fields(&self) -> Vec<Field> {
+    vec![
+      self.inscription_id,
+      self.charm,
+      self.sat_name,
+      self.timestamp,
+    ]
+  }
+
+  fn search_result(&self, document: &TantivyDocument) -> Option<SearchResult> {
+    let inscription_id = document.get_first(self.inscription_id).and_then(|value| {
+      if let OwnedValue::Str(id_str) = value {
+        Some(id_str)
+      } else {
+        None
+      }
+    })?;
+
+    let timestamp = document.get_first(self.timestamp).and_then(|value| {
+      if let OwnedValue::Date(date) = value {
+        Some(date)
+      } else {
+        None
+      }
+    })?;
+
+    Some(SearchResult {
+      inscription_id: inscription_id.parse().ok()?,
+      timestamp: *timestamp,
+    })
+  }
+
+  fn query_parser(&self, search_index: &TantivyIndex) -> QueryParser {
+    let mut query_parser = QueryParser::for_index(search_index, self.default_search_fields());
+    query_parser.set_conjunction_by_default();
+    query_parser
+  }
+}
+
+#[derive(Clone)]
+pub struct SearchIndex {
+  ord_index: Arc<Index>,
+  reader: IndexReader,
+  schema: Schema,
+  search_index: TantivyIndex,
+  writer: Arc<Mutex<IndexWriter>>,
+}
+
+#[derive(Eq, Hash, PartialEq)]
+pub struct SearchResult {
+  pub inscription_id: InscriptionId,
+  pub timestamp: DateTime,
+}
+
+impl SearchIndex {
+  pub fn open(index: Arc<Index>, settings: &Settings) -> Result<Self> {
+    let mut schema_builder = TantivySchema::builder();
+
+    let schema = Schema {
+      inscription_id: schema_builder.add_text_field("inscription_id", STRING | STORED),
+      charm: schema_builder.add_text_field("charm", STRING),
+      sat_name: schema_builder.add_text_field("sat_name", STRING),
+      timestamp: schema_builder.add_date_field(
+        "timestamp",
+        DateOptions::from(INDEXED)
+          .set_stored()
+          .set_fast()
+          .set_precision(DateTimePrecision::Seconds),
+      ),
+    };
+
+    let path = settings.search_index().to_owned();
+
+    fs::create_dir_all(&path).snafu_context(error::Io { path: path.clone() })?;
+
+    let search_index =
+      TantivyIndex::open_or_create(MmapDirectory::open(path)?, schema_builder.build())?;
+
+    let reader = search_index
+      .reader_builder()
+      .reload_policy(ReloadPolicy::OnCommitWithDelay)
+      .try_into()?;
+
+    let writer = search_index.writer(50_000_000)?;
+
+    Ok(Self {
+      ord_index: index,
+      reader,
+      schema,
+      search_index,
+      writer: Arc::new(Mutex::new(writer)),
+    })
+  }
+
+  pub fn search(&self, query: &str) -> Result<Vec<SearchResult>> {
+    let searcher = self.reader.searcher();
+
+    let query = self
+      .schema
+      .query_parser(&self.search_index)
+      .parse_query(query)?;
+
+    let unique_results = searcher
+      .search(&query, &TopDocs::with_limit(100))?
+      .iter()
+      .filter_map(|(_score, doc_address)| {
+        self
+          .schema
+          .search_result(&searcher.doc::<TantivyDocument>(*doc_address).ok()?)
+      })
+      .collect::<HashSet<SearchResult>>();
+
+    let mut results = unique_results.into_iter().collect::<Vec<SearchResult>>();
+
+    results.sort_by(|a, b| b.timestamp.cmp(&a.timestamp));
+
+    Ok(results)
+  }
+
+  pub(crate) fn update(&self) -> Result {
+    let mut indexed_inscriptions = Vec::new();
+
+    loop {
+      for inscription_id in self.ord_index.get_inscriptions()? {
+        if !indexed_inscriptions.contains(&inscription_id) {
+          self.index_inscription(inscription_id)?;
+          indexed_inscriptions.push(inscription_id);
+        }
+
+        if SHUTTING_DOWN.load(atomic::Ordering::Relaxed) {
+          return Ok(());
+        }
+      }
+    }
+  }
+
+  fn index_inscription(&self, inscription_id: InscriptionId) -> Result {
+    let searcher = self.reader.searcher();
+
+    let query = self
+      .schema
+      .query_parser(&self.search_index)
+      .parse_query(&format!("inscription_id:{inscription_id}"))?;
+
+    if searcher.search(&query, &Count)? > 0 {
+      return Ok(());
+    }
+
+    let (inscription, _, _) = self
+      .ord_index
+      .inscription_info(query::Inscription::Id(inscription_id), None)?
+      .ok_or(anyhow!(format!(
+        "failed to get info for inscription with id `{inscription_id}`"
+      )))?;
+
+    let mut writer = self.writer.lock().unwrap();
+
+    let mut document = TantivyDocument::default();
+
+    document.add_text(self.schema.inscription_id, inscription.id.to_string());
+
+    for charm in inscription.charms {
+      document.add_text(self.schema.charm, charm);
+    }
+
+    if let Some(sat) = inscription.sat {
+      document.add_text(self.schema.sat_name, sat.name());
+    }
+
+    document.add_date(
+      self.schema.timestamp,
+      DateTime::from_timestamp_secs(inscription.timestamp),
+    );
+
+    writer.add_document(document)?;
+
+    writer.commit()?;
+
+    log::info!(
+      "Indexed inscription with id `{}` to search index",
+      inscription_id
+    );
+
+    Ok(())
+  }
+}