implement snapshot scheduler

meilisearch-http/src/index_controller/snapshot.rs

@@ -0,0 +1,48 @@
+use std::path::PathBuf;
+use std::time::Duration;
+
+use tokio::time::interval;
+
+use super::index_actor::IndexActorHandle;
+use super::update_actor::UpdateActorHandle;
+use super::uuid_resolver::UuidResolverHandle;
+
+#[allow(dead_code)]
+pub struct SnapshotService<B> {
+    index_handle: IndexActorHandle,
+    uuid_resolver_handle: UuidResolverHandle,
+    update_handle: UpdateActorHandle<B>,
+    snapshot_period: Duration,
+    snapshot_path: PathBuf,
+}
+
+impl<B> SnapshotService<B> {
+    pub fn new(
+        index_handle: IndexActorHandle,
+        uuid_resolver_handle: UuidResolverHandle,
+        update_handle: UpdateActorHandle<B>,
+        snapshot_period: Duration,
+        snapshot_path: PathBuf,
+    ) -> Self {
+        Self {
+            index_handle,
+            uuid_resolver_handle,
+            update_handle,
+            snapshot_period,
+            snapshot_path,
+        }
+    }
+
+    pub async fn run(self) {
+        let mut interval = interval(self.snapshot_period);
+
+        loop {
+            interval.tick().await;
+            self.perform_snapshot().await;
+        }
+    }
+
+    async fn perform_snapshot(&self) {
+        println!("performing snapshot in {:?}", self.snapshot_path);
+    }
+}