hold the DB open for the duration of the check

rslib/src/backend.rs

@@ -314,7 +314,10 @@ impl Backend {
 
     fn add_file_to_media_folder(&mut self, input: pt::AddFileToMediaFolderIn) -> Result<String> {
         let mgr = MediaManager::new(&self.media_folder, &self.media_db)?;
-        Ok(mgr.add_file(&input.desired_name, &input.data)?.into())
+        let mut ctx = mgr.dbctx();
+        Ok(mgr
+            .add_file(&mut ctx, &input.desired_name, &input.data)?
+            .into())
     }
 
     fn sync_media(&self, input: SyncMediaIn) -> Result<()> {

rslib/src/media/check.rs

@@ -2,6 +2,7 @@
 // License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
 use crate::err::{AnkiError, Result};
+use crate::media::database::MediaDatabaseContext;
 use crate::media::files::{
     data_for_file, filename_if_normalized, remove_files, MEDIA_SYNC_FILESIZE_LIMIT,
 };
@@ -60,6 +61,7 @@ where
         let mut oversize = vec![];
         let mut all_files = vec![];
         let mut renamed_files = vec![];
+        let mut ctx = self.mgr.dbctx();
         for dentry in self.mgr.media_folder.read_dir()? {
             let dentry = dentry?;
 
@@ -92,7 +94,7 @@ where
             }
 
             // rename if required
-            let (norm_name, renamed) = self.normalize_and_maybe_rename(&disk_fname)?;
+            let (norm_name, renamed) = self.normalize_and_maybe_rename(&mut ctx, &disk_fname)?;
             if renamed {
                 renamed_files.push(RenamedFile {
                     current_fname: norm_name.to_string(),
@@ -114,6 +116,7 @@ where
     /// Returns (normalized_form, needs_rename)
     fn normalize_and_maybe_rename<'a>(
         &mut self,
+        ctx: &mut MediaDatabaseContext,
         disk_fname: &'a str,
     ) -> Result<(Cow<'a, str>, bool)> {
         // already normalized?
@@ -127,7 +130,7 @@ where
                 info: "file disappeared".into(),
             }
         })?;
-        let fname = self.mgr.add_file(disk_fname, &data)?;
+        let fname = self.mgr.add_file(ctx, disk_fname, &data)?;
         debug!("renamed {} to {}", disk_fname, fname);
         assert_ne!(fname.as_ref(), disk_fname);
 

rslib/src/media/mod.rs

@@ -39,7 +39,12 @@ impl MediaManager {
     /// appended to the name.
     ///
     /// Also notes the file in the media database.
-    pub fn add_file<'a>(&self, desired_name: &'a str, data: &[u8]) -> Result<Cow<'a, str>> {
+    pub fn add_file<'a>(
+        &self,
+        ctx: &mut MediaDatabaseContext,
+        desired_name: &'a str,
+        data: &[u8],
+    ) -> Result<Cow<'a, str>> {
         let pre_add_folder_mtime = mtime_as_i64(&self.media_folder)?;
 
         // add file to folder
@@ -50,7 +55,7 @@ impl MediaManager {
         let post_add_folder_mtime = mtime_as_i64(&self.media_folder)?;
 
         // add to the media DB
-        self.dbctx().transact(|ctx| {
+        ctx.transact(|ctx| {
             let existing_entry = ctx.get_entry(&chosen_fname)?;
             let new_sha1 = Some(data_hash);
 
@@ -94,7 +99,7 @@ impl MediaManager {
         syncer.sync(hkey).await
     }
 
-    fn dbctx(&self) -> MediaDatabaseContext {
+    pub fn dbctx(&self) -> MediaDatabaseContext {
         MediaDatabaseContext::new(&self.db)
     }
 }