search database has to be a file, as in-memory dbs are per connection

Cargo.lock

@@ -201,6 +201,7 @@ dependencies = [
  "r2d2_sqlite",
  "rusqlite",
  "serde",
+ "tempfile",
  "thiserror",
  "time",
 ]
@@ -452,6 +453,16 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
 
+[[package]]
+name = "errno"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "534c5cf6194dfab3db3242765c03bbe257cf92f22b38f6bc0c58d59108a820ba"
+dependencies = [
+ "libc",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "fallible-iterator"
 version = "0.3.0"
@@ -464,6 +475,12 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7360491ce676a36bf9bb3c56c1aa791658183a54d2744120f27285738d90465a"
 
+[[package]]
+name = "fastrand"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9fc0510504f03c51ada170672ac806f1f105a88aa97a5281117e1ddc3368e51a"
+
 [[package]]
 name = "flate2"
 version = "1.0.30"
@@ -887,9 +904,15 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
+
 [[package]]
 name = "little-hesinde"
-version = "0.2.1"
+version = "0.2.3"
 dependencies = [
  "calibre-db",
  "clap",
@@ -1435,6 +1458,19 @@ version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
 
+[[package]]
+name = "rustix"
+version = "0.38.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70dc5ec042f7a43c4a73241207cecc9873a06d45debb38b329f8541d85c2730f"
+dependencies = [
+ "bitflags 2.5.0",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.17"
@@ -1657,6 +1693,18 @@ dependencies = [
  "futures-core",
 ]
 
+[[package]]
+name = "tempfile"
+version = "3.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85b77fafb263dd9d05cbeac119526425676db3784113aa9295c88498cbf8bff1"
+dependencies = [
+ "cfg-if",
+ "fastrand",
+ "rustix",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "tera"
 version = "1.19.1"

Containerfile

@@ -19,5 +19,6 @@ FROM scratch
 COPY --from=builder /app /app
 CMD ["/app", "--listen-address", "[::]:3000", "--", "/library"]
 
+ENV TMPDIR=/
 VOLUME ["/library"]
 EXPOSE 3000

calibre-db/Cargo.toml

@@ -12,5 +12,6 @@ r2d2 = "0.8.10"
 r2d2_sqlite = "0.24.0"
 rusqlite = { version = "0.31.0", features = ["bundled", "time"] }
 serde = { workspace = true }
+tempfile = "3.10.1"
 thiserror = { workspace = true }
 time = { workspace = true }

calibre-db/src/data/error.rs

@@ -1,5 +1,8 @@
 //! Error handling for calibre database access.
 
+use std::io;
+
+use tempfile::PersistError;
 use thiserror::Error;
 use time::error::Parse;
 
@@ -16,9 +19,15 @@ pub enum DataStoreError {
     /// Error connecting to the database.
     #[error("connection error")]
     ConnectionError(#[from] r2d2::Error),
-    /// Error wparsing a datetime from the database.
+    /// Error parsing a datetime from the database.
     #[error("failed to parse datetime")]
     DateTimeError(#[from] Parse),
+    /// Error creating the search database.
+    #[error("failed to create search database")]
+    SearchDbError(#[from] io::Error),
+    /// Error marking the search database as persistent.
+    #[error("failed to persist search database")]
+    PersistSearchDbError(#[from] PersistError),
 }
 
 /// Convert an SQLite error into a proper NoResults one if the query

calibre-db/src/search.rs

@@ -1,13 +1,14 @@
 //! Provide search funcitonality for calibre.
 //!
 //! Because the calibre database can not be disturbed (it is treated as read-only)
-//! it attaches an in-memory database and inserts the relevant data into a
+//! it attaches a temporary database and inserts the relevant data into a
 //! virtual table leveraging fts5 (https://www.sqlite.org/fts5.html). Full-text search is run on
 //! that virtual table.
 
 use r2d2::{Pool, PooledConnection};
 use r2d2_sqlite::SqliteConnectionManager;
 use rusqlite::named_params;
+use tempfile::NamedTempFile;
 
 use crate::data::{book::Book, error::DataStoreError};
 
@@ -31,11 +32,16 @@ const SEARCH_INIT_QUERY: &str = "INSERT INTO search.fts(book_id, data)
       LEFT JOIN main.series AS s ON b2s.series = s.id
     GROUP BY b.id";
 
-/// Attach the fts in-memory database to the read-only calibre database.
+/// Attach the fts temporary database to the read-only calibre database.
 pub(crate) fn attach(pool: &Pool<SqliteConnectionManager>) -> Result<(), DataStoreError> {
     let conn = pool.get()?;
+    let tmpfile = NamedTempFile::new()?;
+    let (_, path) = tmpfile.keep()?;
 
-    conn.execute("ATTACH DATABASE ':memory:' AS search", [])?;
+    conn.execute(
+        &format!("ATTACH DATABASE '{}' AS search", path.to_string_lossy()),
+        [],
+    )?;
     init(&conn)?;
 
     Ok(())

little-hesinde/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "little-hesinde"
-version = "0.2.1"
+version = "0.2.3"
 edition = "2021"
 license =  { workspace = true }
 authors =  { workspace = true }

little-hesinde/src/lib.rs

@@ -76,7 +76,7 @@ pub mod opds {
 pub mod templates;
 
 pub const APP_NAME: &str = "little-hesinde";
-pub const VERSION: &str = "0.2.1";
+pub const VERSION: &str = "0.2.3";
 
 /// Internal marker data in lieu of a proper `Accept` header.
 #[derive(Debug, Clone, Copy)]