write the compat layer from v2 to v3

dump/src/reader/v3/errors.rs

@@ -91,6 +91,9 @@ pub enum Code {
     MissingContentType,
     MalformedPayload,
     MissingPayload,
+
+    MalformedDump,
+    UnretrievableErrorCode,
 }
 
 impl Code {
@@ -181,6 +184,10 @@ impl Code {
                 ErrCode::invalid("invalid_content_type", StatusCode::UNSUPPORTED_MEDIA_TYPE)
             }
             MissingPayload => ErrCode::invalid("missing_payload", StatusCode::BAD_REQUEST),
+            UnretrievableErrorCode => {
+                ErrCode::invalid("unretrievable_error_code", StatusCode::BAD_REQUEST)
+            }
+            MalformedDump => ErrCode::invalid("malformed_dump", StatusCode::BAD_REQUEST),
         }
     }
 

dump/src/reader/v3/mod.rs

@@ -78,7 +78,7 @@ pub struct V3Reader {
     dump: TempDir,
     metadata: Metadata,
     tasks: BufReader<File>,
-    pub index_uuid: Vec<IndexUuid>,
+    index_uuid: Vec<IndexUuid>,
 }
 
 impl V3Reader {
@@ -100,6 +100,10 @@ impl V3Reader {
         })
     }
 
+    pub fn index_uuid(&self) -> Vec<IndexUuid> {
+        self.index_uuid.clone()
+    }
+
     pub fn to_v4(self) -> CompatV3ToV4 {
         CompatV3ToV4::new(self)
     }

dump/src/reader/v3/settings.rs

@@ -179,6 +179,17 @@ impl<T> Default for Setting<T> {
 }
 
 impl<T> Setting<T> {
+    pub fn map<U, F>(self, f: F) -> Setting<U>
+    where
+        F: FnOnce(T) -> U,
+    {
+        match self {
+            Setting::Set(t) => Setting::Set(f(t)),
+            Setting::Reset => Setting::Reset,
+            Setting::NotSet => Setting::NotSet,
+        }
+    }
+
     pub fn set(self) -> Option<T> {
         match self {
             Self::Set(value) => Some(value),