Move back to JSON from MsgPack, change upload module in ERP5

The Python msgpack library does not deserialize MsgPack data
created with Rust's rmp-serde well.

Upload to Computer Metadata Snapshot module recently created for
ERP5.

Cargo.toml

@@ -20,8 +20,9 @@ nix = "0.18.0"
 serde = { version = "1.0.115", features = ["derive"] }
 base64 = "0.12.3"
 rayon = "1.3.1"
+serde_json = "1.0.57"
 
 [profile.release]
 opt-level = 'z'
 lto = true
-codegen-units = 1
+codegen-units = 1
\ No newline at end of file

src/main.rs

@@ -64,9 +64,9 @@ impl From<nix::sys::stat::FileStat> for FileStat {
 
 #[derive(Default, Debug, Serialize)]
 struct Tree {
-    childs: HashMap<OsString, Tree>,
+    childs: HashMap<String, Tree>,
     stat: Option<FileStat>,
-    xattrs: HashMap<OsString, Option<Vec<u8>>>,
+    xattrs: HashMap<String, Option<Vec<u8>>>,
     posix_acls: Option<String>,
     ignored: bool,
     symlink_target: Option<OsString>,
@@ -131,7 +131,7 @@ fn construct_fs_tree(
                     xattrs: match xattr::list(&entry.path()) {
                         Ok(xattrs) => xattrs
                             .filter_map(|name| match xattr::get(&entry.path(), &name) {
-                                Ok(xattr) => Some((name, xattr)),
+                                Ok(xattr) => Some((name.to_str().unwrap().to_string(), xattr)),
                                 _ => None,
                             })
                             .collect(),
@@ -198,7 +198,9 @@ fn construct_fs_tree(
 
                 {
                     let mut locked = cur_tree.lock().unwrap();
-                    locked.childs.insert(entry.file_name(), tree);
+                    locked
+                        .childs
+                        .insert(entry.file_name().to_str().unwrap().to_string(), tree);
                 }
             }
             _ => {}
@@ -235,9 +237,9 @@ fn upload_to_erp5<R: Read + Send + 'static>(
     let resp = client
         .get(&format!("{}/portal_contributions/newContent", base_url))
         .query(&[
-            ("portal_type", "File"),
+            ("portal_type", "Computer Metadata Snapshot"),
             ("filename", &format!("{}.metadata", &reference)),
-            ("container_path", "document_module"),
+            ("container_path", "computer_metadata_snapshot_module"),
             ("data", ""),
         ])
         .send()?;
@@ -342,7 +344,7 @@ fn main() -> Result<()> {
         )?,
     };
 
-    let packed = rmp_serde::encode::to_vec_named(&snapshot)?;
+    let packed = serde_json::to_vec(&snapshot)?;
     let packed_size = packed.len() as u64;
 
     upload_to_erp5(