Add the logic which will call disk image conversion from disk image route

virtweb_backend/src/utils/file_disks_utils.rs

@@ -13,15 +13,32 @@ enum DisksError {
     Create,
 }
 
-#[derive(Debug, serde::Serialize)]
+#[derive(Debug, serde::Serialize, serde::Deserialize, Copy, Clone)]
 #[serde(tag = "format")]
 pub enum DiskFileFormat {
-    Raw { is_sparse: bool },
-    QCow2 { virtual_size: FileSize },
+    Raw {
+        #[serde(default)]
+        is_sparse: bool,
+    },
+    QCow2 {
+        #[serde(default)]
+        virtual_size: FileSize,
+    },
     CompressedRaw,
     CompressedQCow2,
 }
 
+impl DiskFileFormat {
+    pub fn ext(&self) -> &'static [&'static str] {
+        match self {
+            DiskFileFormat::Raw { .. } => &["", "raw"],
+            DiskFileFormat::QCow2 { .. } => &["qcow2"],
+            DiskFileFormat::CompressedRaw => &["raw.gz"],
+            DiskFileFormat::CompressedQCow2 => &["qcow2.gz"],
+        }
+    }
+}
+
 /// Disk file information
 #[derive(serde::Serialize)]
 pub struct DiskFileInfo {
@@ -125,6 +142,11 @@ impl DiskFileInfo {
 
         Ok(())
     }
+
+    /// Copy / convert file disk image into a new destination with optionally a new file format
+    pub fn convert(&self, dest_file: &Path, dest_format: DiskFileFormat) -> anyhow::Result<()> {
+        todo!()
+    }
 }
 
 #[derive(serde::Deserialize)]

virtweb_backend/src/utils/file_size_utils.rs

@@ -1,5 +1,14 @@
 #[derive(
-    serde::Serialize, serde::Deserialize, Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord,
+    serde::Serialize,
+    serde::Deserialize,
+    Copy,
+    Clone,
+    Debug,
+    Eq,
+    PartialEq,
+    PartialOrd,
+    Ord,
+    Default,
 )]
 pub struct FileSize(usize);