[nexus] Add stubs for image APIs

common/src/sql/dbinit.sql

@@ -414,6 +414,30 @@ CREATE INDEX ON omicron.public.disk (
 ) WHERE
     time_deleted IS NULL AND attach_instance_id IS NOT NULL;
 
+CREATE TABLE omicron.public.image (
+    /* Identity metadata (resource) */
+    id UUID PRIMARY KEY,
+    name STRING(63) NOT NULL,
+    description STRING(512) NOT NULL,
+    time_created TIMESTAMPTZ NOT NULL,
+    time_modified TIMESTAMPTZ NOT NULL,
+    /* Indicates that the object has been deleted */
+    time_deleted TIMESTAMPTZ,
+
+    /* Optional project UUID: Images may or may not be global */
+    project_id UUID,
+    /* Optional volume ID: Images may exist without backing volumes */
+    volume_id UUID,
+    /* Optional URL: Images may be backed by either a URL or a volume */
+    url STRING(8192),
+    size_bytes INT NOT NULL
+);
+
+CREATE UNIQUE INDEX on omicron.public.image (
+    project_id,
+    name
+) WHERE
+    time_deleted is NULL;
 
 CREATE TABLE omicron.public.snapshot (
     /* Identity metadata (resource) */

nexus/src/db/model.rs

@@ -7,7 +7,7 @@
 use crate::db::collection_insert::DatastoreCollection;
 use crate::db::identity::{Asset, Resource};
 use crate::db::schema::{
-    console_session, dataset, disk, instance, metric_producer,
+    console_session, dataset, disk, image, instance, metric_producer,
     network_interface, organization, oximeter, project, rack, region,
     role_assignment_builtin, role_builtin, router_route, silo, silo_user, sled,
     snapshot, update_available_artifact, user_builtin, volume, vpc,
@@ -1505,6 +1505,39 @@ impl Into<external::DiskState> for DiskState {
     }
 }
 
+#[derive(
+    Queryable,
+    Insertable,
+    Selectable,
+    Clone,
+    Debug,
+    Resource,
+    Serialize,
+    Deserialize,
+)]
+#[table_name = "image"]
+pub struct Image {
+    #[diesel(embed)]
+    identity: ImageIdentity,
+
+    project_id: Option<Uuid>,
+    volume_id: Option<Uuid>,
+    url: Option<String>,
+    #[column_name = "size_bytes"]
+    size: ByteCount,
+}
+
+impl From<Image> for views::Image {
+    fn from(image: Image) -> Self {
+        Self {
+            identity: image.identity(),
+            project_id: image.project_id,
+            url: image.url,
+            size: image.size.into(),
+        }
+    }
+}
+
 #[derive(
     Queryable,
     Insertable,

nexus/src/db/schema.rs

@@ -26,6 +26,21 @@ table! {
     }
 }
 
+table! {
+    image (id) {
+        id -> Uuid,
+        name -> Text,
+        description -> Text,
+        time_created -> Timestamptz,
+        time_modified -> Timestamptz,
+        time_deleted -> Nullable<Timestamptz>,
+        project_id -> Nullable<Uuid>,
+        volume_id -> Uuid,
+        url -> Text,
+        size_bytes -> Int8,
+    }
+}
+
 table! {
     snapshot (id) {
         id -> Uuid,