Xuanwo commented on code in PR #2832:
URL: 
https://github.com/apache/incubator-opendal/pull/2832#discussion_r1288558900


##########
bin/oay/src/services/webdav/webdavfs.rs:
##########
@@ -73,8 +75,96 @@ impl DavFileSystem for WebdavFs {
         path: &'a dav_server::davpath::DavPath,
     ) -> dav_server::fs::FsFuture<Box<dyn dav_server::fs::DavMetaData>> {
         async move {
-            let opendal_metadata = 
self.op.stat(path.as_url_string().as_str()).await.unwrap();
-            Ok(Box::new(WebdavMetaData::new(opendal_metadata)) as Box<dyn 
DavMetaData>)
+            let opendal_metadata = 
self.op.stat(path.as_url_string().as_str()).await;
+            match opendal_metadata {
+                Ok(metadata) => {
+                    let webdav_metadata = WebdavMetaData::new(metadata);
+                    Ok(Box::new(webdav_metadata) as Box<dyn DavMetaData>)
+                }
+                Err(e) => Err(convert_error(e)),
+            }
+        }
+        .boxed()
+    }
+
+    fn create_dir<'a>(&'a self, path: &'a DavPath) -> 
dav_server::fs::FsFuture<()> {
+        async move {
+            let path = path.as_url_string();
+
+            // check if the parent path is exist.
+            // During MKCOL processing, a server MUST make the Request-URI a 
member of its parent collection, unless the Request-URI is "/".  If no such 
ancestor exists, the method MUST fail.
+            // refer to 
https://datatracker.ietf.org/doc/html/rfc2518#section-8.3.1
+            let parent = Path::new(&path).parent().unwrap();
+            match self.op.is_exist(parent.to_str().unwrap()).await {
+                Ok(exist) => {
+                    if !exist && parent != Path::new("/") {
+                        return Err(dav_server::fs::FsError::NotFound);
+                    }
+                }
+                Err(e) => {
+                    return Err(convert_error(e));
+                }
+            }
+
+            let path = path.as_str();
+            // check if the given path is exist (MKCOL on existing collection 
should fail (RFC2518:8.3.1))
+            let exist = self.op.is_exist(path).await;
+            match exist {
+                Ok(exist) => match exist {
+                    true => Err(dav_server::fs::FsError::Exists),
+                    false => {
+                        let res = self.op.create_dir(path).await;
+                        match res {
+                            Ok(_) => Ok(()),
+                            Err(e) => Err(convert_error(e)),
+                        }
+                    }
+                },
+                Err(e) => Err(convert_error(e)),
+            }
+        }
+        .boxed()
+    }
+
+    fn remove_file<'a>(&'a self, path: &'a DavPath) -> 
dav_server::fs::FsFuture<()> {
+        async move {
+            let res = self.op.delete(path.as_url_string().as_str()).await;
+            match res {
+                Ok(_) => Ok(()),
+                Err(e) => Err(convert_error(e)),
+            }
+        }
+        .boxed()
+    }
+
+    fn remove_dir<'a>(&'a self, path: &'a DavPath) -> 
dav_server::fs::FsFuture<()> {
+        self.remove_file(path)
+    }
+
+    fn copy<'a>(&'a self, from: &'a DavPath, to: &'a DavPath) -> 
dav_server::fs::FsFuture<()> {
+        async move {
+            let res = self

Review Comment:
   I prefer to use `map_error` here. For example:
   
   ```rust
   let res = self.op.copy(&from.as_url_string(), 
&to.as_url_string()).await.map_err(convert_error)?;
   ```



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