From d3ab2684f43dea2f43be133fbf87fbb3d80f761e Mon Sep 17 00:00:00 2001
From: rm-dr <96270320+rm-dr@users.noreply.github.com>
Date: Fri, 3 Apr 2026 08:57:43 -0700
Subject: [PATCH] Auto-refresh

---
 crates/pile-dataset/src/dataset.rs | 20 ++++++++++-
 crates/pile/src/command/server.rs  | 58 ++++++++++++++++++++++++++++--
 2 files changed, 75 insertions(+), 3 deletions(-)

diff --git a/crates/pile-dataset/src/dataset.rs b/crates/pile-dataset/src/dataset.rs
index f23d615..d2bd2a3 100644
--- a/crates/pile-dataset/src/dataset.rs
+++ b/crates/pile-dataset/src/dataset.rs
@@ -302,6 +302,7 @@ impl Datasets {
 		_threads: usize,
 		flag: Option<CancelFlag>,
 	) -> Result<(), CancelableTaskError<DatasetError>> {
+		let start = Instant::now();
 		let workdir = match self.path_workdir.as_ref() {
 			Some(x) => x,
 			None => {
@@ -313,6 +314,14 @@ impl Datasets {
 		let fts_tmp_dir = workdir.join(".tmp-fts");
 		let fts_dir = workdir.join("fts");
 
+		debug!(
+			message = "Rebuilding fts index",
+			dataset = self.config.dataset.name.as_str(),
+			?fts_dir,
+			?fts_tmp_dir,
+			?workdir
+		);
+
 		if fts_tmp_dir.is_dir() {
 			warn!("Removing temporary index in {}", fts_dir.display());
 			std::fs::remove_dir_all(&fts_tmp_dir).map_err(DatasetError::from)?;
@@ -392,9 +401,18 @@ impl Datasets {
 			return Err(CancelableTaskError::Cancelled);
 		}
 
-		info!("Committing {total} documents");
 		index_writer.commit().map_err(DatasetError::from)?;
 
+		debug!(
+			message = "Rebuilt fts index",
+			dataset = self.config.dataset.name.as_str(),
+			?fts_dir,
+			?fts_tmp_dir,
+			?workdir,
+			n_docs = total,
+			time_ms = start.elapsed().as_millis()
+		);
+
 		if fts_dir.is_dir() {
 			warn!("Removing existing index in {}", fts_dir.display());
 			std::fs::remove_dir_all(&fts_dir).map_err(DatasetError::from)?;
diff --git a/crates/pile/src/command/server.rs b/crates/pile/src/command/server.rs
index 3fb379c..9f6e4e8 100644
--- a/crates/pile/src/command/server.rs
+++ b/crates/pile/src/command/server.rs
@@ -8,10 +8,11 @@ use axum::{
 	routing::get,
 };
 use clap::Args;
-use pile_dataset::Datasets;
+use pile_dataset::{DatasetError, Datasets};
 use pile_toolbox::cancelabletask::{CancelFlag, CancelableTaskError};
+use pile_value::extract::traits::ExtractState;
 use serde::Serialize;
-use std::{fmt::Debug, path::PathBuf, sync::Arc};
+use std::{fmt::Debug, path::PathBuf, sync::Arc, time::Duration};
 use tracing::{error, info};
 use utoipa::{OpenApi, ToSchema};
 use utoipa_swagger_ui::SwaggerUi;
@@ -27,6 +28,18 @@ pub struct ServerCommand {
 	/// If provided, do not serve docs
 	#[arg(long)]
 	no_docs: bool,
+
+	/// If provided, never auto-refresh indices
+	#[arg(long)]
+	no_refresh: bool,
+
+	/// Number of threads to use to referesh indices
+	#[arg(long, default_value = "5")]
+	refresh_jobs: usize,
+
+	/// Refresh indices every `n` seconds
+	#[arg(long, default_value = "300")]
+	refresh_delay: usize,
 }
 
 impl CliCmd for ServerCommand {
@@ -47,6 +60,47 @@ impl CliCmd for ServerCommand {
 			Arc::new(datasets)
 		};
 
+		// Start auto-refresh task
+		if !self.no_refresh {
+			let datasets = datasets.clone();
+			let jobs = self.refresh_jobs.max(1);
+			let delay = self.refresh_delay.max(1);
+
+			async fn refresh_dataset(ds: &Datasets, jobs: usize) -> Result<(), DatasetError> {
+				if ds.needs_fts().await? {
+					let state = ExtractState { ignore_mime: false };
+					match ds.fts_refresh(&state, jobs, None).await {
+						Ok(()) => {}
+						Err(CancelableTaskError::Error(err)) => return Err(err),
+						Err(CancelableTaskError::Cancelled) => unreachable!(),
+					};
+				}
+
+				return Ok(());
+			}
+
+			tokio::task::spawn(async move {
+				loop {
+					for ds in datasets.iter() {
+						match refresh_dataset(ds, jobs).await {
+							Ok(x) => x,
+							Err(error) => {
+								error!(
+									message = "Error while refreshing dataset",
+									dataset = ds.config.dataset.name.as_str(),
+									?error
+								);
+							}
+						}
+
+						tokio::time::sleep(Duration::from_secs(10)).await;
+					}
+
+					tokio::time::sleep(Duration::from_secs(delay as u64)).await;
+				}
+			});
+		}
+
 		let bearer = BearerToken(ctx.config.api_token.clone().map(Arc::new));
 
 		let mut router = Router::new();