now can run

src/config_util.rs

@@ -62,37 +62,49 @@ pub struct OSSBackupdConfig {
     pub items: Vec<OSSBackupdConfigItem>,
 }
 
+impl OSSBackupdConfig {
+
+    pub fn get_host(&self) -> String {
+        match &self.host {
+            Some(h) => remove_start_end_slash(&h),
+            None => "default_host".to_owned(),
+        }
+    }
+
+    pub fn get_prefix(&self) -> String {
+        match &self.prefix {
+            Some(p) => remove_start_end_slash(&p),
+            None => "default_oss_backupd".to_owned(),
+        }
+    }
+}
+
 impl OSSBackupdConfigItem {
 
     pub fn make_oss_key(&self, oss_backupd_config: &OSSBackupdConfig, suffix: &str) -> String {
         real_make_oss_key(oss_backupd_config, &self, suffix)
     }
+
+    pub fn get_file_name(&self) -> String {
+        match &self.file_name {
+            Some(f) => f.clone(),
+            None => "default_file_name".to_owned(),
+        }
+    }
 }
 
 fn real_make_oss_key(oss_backupd_config: &OSSBackupdConfig, oss_backupd_config_item: &OSSBackupdConfigItem, suffix: &str) -> String {
     let mut key = String::with_capacity(1024);
-    key.push_str(&(if oss_backupd_config.prefix.is_some() {
-       remove_start_end_slash(&oss_backupd_config.prefix.as_ref().unwrap().as_str())
-    } else {
-        "default_oss_backupd".to_string()
-    }));
+    key.push_str(&oss_backupd_config.get_prefix());
     key.push_str("/");
-    key.push_str(&(if oss_backupd_config.host.is_some() {
-        remove_start_end_slash(&oss_backupd_config.host.as_ref().unwrap().as_str())
-    } else {
-        "default_host".to_string()
-    }));
+    key.push_str(&oss_backupd_config.get_host());
     key.push_str("/");
-    key.push_str(if oss_backupd_config_item.file_name.is_some() {
-        oss_backupd_config_item.file_name.as_ref().unwrap().as_str()
-    } else {
-        "default_file_name"
-    });
+    key.push_str(&oss_backupd_config_item.get_file_name());
     key.push_str("_");
     let ymdhms = Utc::now().format("%Y%m%d_%H%M%S").to_string();
     key.push_str(&ymdhms);
 
-    if suffix != "" {
+    if !suffix.is_empty() {
         key.push_str(&format!(".{}", suffix));
     }