feat: add 'load_to_cache' field to Download message (#437)

Signed-off-by: southwest <[email protected]>

Author: SouthWest7

Diff for: Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "dragonfly-api"
-version = "2.1.3"
+version = "2.1.4"
 authors = ["Gaius <[email protected]>"]
 edition = "2021"
 license = "Apache-2.0"

Diff for: Cargo.toml

@@ -441,6 +441,10 @@ message Download {
   bool is_prefetch = 19;
   // need_piece_content is the flag to indicate whether the response needs to return piece content.
   bool need_piece_content = 20;
+  // load_to_cache indicates whether the content downloaded will be stored in the cache storage.
+  // Cache storage is designed to store downloaded piece content from preheat tasks, 
+  // allowing other peers to access the content from memory instead of disk.
+  bool load_to_cache = 21;
 }
 
 // Object Storage related information.

Diff for: pkg/apis/common/v2/common.pb.go

@@ -437,6 +437,10 @@ message Download {
   bool is_prefetch = 19;
   // need_piece_content is the flag to indicate whether the response needs to return piece content.
   bool need_piece_content = 20;
+  // load_to_cache indicates whether the content downloaded will be stored in the cache storage.
+  // Cache storage is designed to store downloaded piece content from preheat tasks, 
+  // allowing other peers to access the content from memory instead of disk.
+  bool load_to_cache = 21;
 }
 
 // Object Storage related information.

Diff for: pkg/apis/common/v2/common.pb.validate.go

@@ -494,6 +494,11 @@ pub struct Download {
     /// need_piece_content is the flag to indicate whether the response needs to return piece content.
     #[prost(bool, tag = "20")]
     pub need_piece_content: bool,
+    /// load_to_cache indicates whether the content downloaded will be stored in the cache storage.
+    /// Cache storage is designed to store downloaded piece content from preheat tasks,
+    /// allowing other peers to access the content from memory instead of disk.
+    #[prost(bool, tag = "21")]
+    pub load_to_cache: bool,
 }
 /// Object Storage related information.
 #[derive(serde::Serialize, serde::Deserialize)]