diff --git a/.gitignore b/.gitignore
index 83159f5..b7fd2de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+sample.gpg
+sample-backupd-config.json
 # ---> macOS
 # General
 .DS_Store
diff --git a/sample.gpg b/sample.gpg
index 9478104..c7676fb 100644
Binary files a/sample.gpg and b/sample.gpg differ
diff --git a/src/config_util.rs b/src/config_util.rs
index d2e71c3..c413543 100644
--- a/src/config_util.rs
+++ b/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));
     }
 
diff --git a/src/main.rs b/src/main.rs
index 674ad1c..164ffff 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -28,7 +28,7 @@ use opt::{
 fn main() -> XResult<()> {
     let options = Options::new_and_parse_args()?;
     if options.version {
-        print_message(MessageType::INFO, "ossbackupd v0.1");
+        print_message(MessageType::INFO, "ossbackupd v0.1.0");
         return Ok(());
     }
 
@@ -50,7 +50,7 @@ fn main() -> XResult<()> {
     let mut item_index = -1;
     for config_item in &oss_backupd_config.items {
         item_index += 1;
-        
+
         if options.verbose {
             print_message(MessageType::DEBUG, &format!("Process config item index: {}, config: {:?}", item_index, config_item));
         }
@@ -133,9 +133,9 @@ fn main() -> XResult<()> {
         }
 
         let oss_client = OSSClient::new(endpoint, access_key_id, access_key_secret);
-        let default_limit = 10_usize;
-        let meta_file_name = &format!("ossbackupd_meta_{}.json", path);
-        let new_file = config_item.make_oss_key(&oss_backupd_config, "gpg");
+        let default_limit = 10_usize; // TODO read from config!
+        let meta_file_name = &format!("{}/ossbackupd_meta_{}_{}.json", &oss_backupd_config.get_prefix(), &oss_backupd_config.get_host(), &config_item.get_file_name());
+        let new_file = format!("{}/{}", path, config_item.make_oss_key(&oss_backupd_config, "gpg"));
 
         if options.verbose {
             print_message(MessageType::DEBUG, &format!("Default limit: {}", default_limit));
@@ -197,16 +197,14 @@ fn main() -> XResult<()> {
                 print_message(MessageType::ERROR, &format!("Error: {}, at item index: {}", e, item_index));
             },
             Ok(_) => {
-                print_message(MessageType::ERROR, &format!("Success, at item index: {}", item_index));
+                print_message(MessageType::OK, &format!("Success, at item index: {}", item_index));
             },
         };
         fs::remove_file(temp_zip_file).ok();
         fs::remove_file(temp_pgp_file).ok();
     }
 
-    if options.verbose {
-        print_message(MessageType::DEBUG, "Backup all file(s) finished!");
-    }
+    print_message(MessageType::OK, "Backup all file(s) finished!");
     Ok(())
 }
 
@@ -229,9 +227,8 @@ pub fn process_oss_files(oss_client: &OSSClient, bucket_name: &str, path: &str,
     oss_client.put_file_content(bucket_name, meta_file_key, &new_meta_file_content)?;
     if !removed_file.is_empty() {
         for rm_file in removed_file {
-            let rm_file_key = &format!("{}/{}", path, rm_file);
-            print_message(MessageType::INFO, &format!("Remove OSS key: {}", rm_file_key));
-            oss_client.delete_file(bucket_name, rm_file_key)?;
+            print_message(MessageType::INFO, &format!("Remove OSS key: {}", &rm_file));
+            oss_client.delete_file(bucket_name, &rm_file)?;
         }
     }
     Ok(())