feat: Add RustFS Scanner Module and Multiple Bug Fixes (#1579)

crates/scanner/src/error.rs

@@ -0,0 +1,36 @@
+// Copyright 2024 RustFS Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use thiserror::Error;
+
+/// Scanner-related errors
+#[derive(Error, Debug)]
+#[non_exhaustive]
+pub enum ScannerError {
+    /// Configuration error
+    #[error("Configuration error: {0}")]
+    Config(String),
+
+    /// I/O error
+    #[error("I/O error: {0}")]
+    Io(#[from] std::io::Error),
+
+    /// Serialization error
+    #[error("Serialization error: {0}")]
+    Serialization(#[from] serde_json::Error),
+
+    /// Generic error
+    #[error("Scanner error: {0}")]
+    Other(String),
+}