Use same UUID for directory and filename

src/file_path.rs

@@ -2,17 +2,36 @@ use std::path::PathBuf;
 
 use uuid::Uuid;
 
-pub(crate) fn generate_disk(mut path: PathBuf) -> PathBuf {
-    path.extend(generate());
+fn add_extension(filename: String, extension: Option<&str>) -> String {
+    if let Some(extension) = extension {
+        filename + extension
+    } else {
+        filename
+    }
+}
+
+pub(crate) fn generate_disk(mut path: PathBuf, extension: Option<&str>) -> PathBuf {
+    let (directories, filename) = generate();
+    path.extend(directories);
+    path.push(add_extension(filename, extension));
     path
 }
 
-pub(crate) fn generate_object() -> String {
-    generate().join("/")
+pub(crate) fn generate_object(extension: Option<&str>) -> String {
+    let (directories, filename) = generate();
+
+    format!(
+        "{}/{}",
+        directories.join("/"),
+        add_extension(filename, extension)
+    )
 }
 
-fn generate() -> Vec<String> {
+fn generate() -> (Vec<String>, String) {
     let s = Uuid::now_v7().simple().to_string();
 
-    (0..10).map(|i| s[i * 2..i * 2 + 2].to_string()).collect()
+    let directories = (0..10).map(|i| s[i * 2..i * 2 + 2].to_string()).collect();
+    let filename = s[20..].to_string();
+
+    (directories, filename)
 }

src/store/file_store.rs

@@ -172,15 +172,7 @@ impl FileStore {
     }
 
     fn next_file(&self, extension: Option<&str>) -> PathBuf {
-        let target_path = crate::file_path::generate_disk(self.root_dir.clone());
-        let file_id = uuid::Uuid::new_v4().to_string();
-        let filename = if let Some(ext) = extension {
-            file_id + ext
-        } else {
-            file_id
-        };
-
-        target_path.join(filename)
+        crate::file_path::generate_disk(self.root_dir.clone(), extension)
     }
 
     #[tracing::instrument(level = "debug", skip(self, path), fields(path = ?path.as_ref()))]

src/store/object_store.rs

@@ -778,15 +778,7 @@ impl ObjectStore {
     }
 
     fn next_file(&self, extension: Option<&str>) -> String {
-        let path = crate::file_path::generate_object();
-        let file_id = uuid::Uuid::new_v4().to_string();
-        let filename = if let Some(ext) = extension {
-            file_id + ext
-        } else {
-            file_id
-        };
-
-        format!("{path}/{filename}")
+        crate::file_path::generate_object(extension)
     }
 }