feat: add image-aware DeleteImage to dfdaemon and image to Download

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "dragonfly-api"
-version = "2.3.8"
+version = "2.3.9"
 authors = ["Gaius <gaius.qi@gmail.com>"]
 edition = "2021"
 license = "Apache-2.0"

pkg/apis/common/v2/common.proto

@@ -743,6 +743,10 @@ message Download {
   // Scheduling policy represents how the download interacts with the scheduler,
   // default is AUTO.
   SchedulingPolicy scheduling_policy = 35 [(validate.rules).enum.defined_only = true];
+  // Image is the OCI image that the task belongs to, such as the manifest, config or layer
+  // of the image. The peer records the task as referenced by the image, so deleting the
+  // image keeps the tasks still referenced by other images.
+  optional Image image = 36;
 
   reserved 21;
   reserved "load_to_cache";
@@ -854,6 +858,15 @@ message OpenCSG {
   }];
 }
 
+// Image represents an OCI image.
+message Image {
+  // Reference is the canonical reference of the image, for example docker.io/library/nginx:latest
+  // or docker.io/library/nginx@sha256:xxx. The same image must use the same reference.
+  string reference = 1 [(validate.rules).string.min_len = 1];
+  // Platform of the image in the format of os/arch, for example linux/amd64.
+  string platform = 2 [(validate.rules).string.pattern = "^[a-z0-9]+/[a-z0-9]+$"];
+}
+
 // Range represents download range.
 message Range {
   // Start of range.