Merge branch 'denoland:main' into main

1 files changed, 41 insertions, 0 deletions

diff --git a/cli/util/retry.rs b/cli/util/retry.rs
new file mode 100644
index 000000000..a8febe60d
--- /dev/null
+++ b/cli/util/retry.rs
@@ -0,0 +1,41 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+use std::future::Future;
+use std::time::Duration;
+
+pub fn retry<
+  F: FnMut() -> Fut,
+  T,
+  E,
+  Fut: Future<Output = Result<T, E>>,
+  ShouldRetry: FnMut(&E) -> bool,
+>(
+  mut f: F,
+  mut should_retry: ShouldRetry,
+) -> impl Future<Output = Result<T, E>> {
+  const WAITS: [Duration; 3] = [
+    Duration::from_millis(100),
+    Duration::from_millis(250),
+    Duration::from_millis(500),
+  ];
+
+  let mut waits = WAITS.into_iter();
+  async move {
+    let mut first_result = None;
+    loop {
+      let result = f().await;
+      match result {
+        Ok(r) => return Ok(r),
+        Err(e) if !should_retry(&e) => return Err(e),
+        _ => {}
+      }
+      if first_result.is_none() {
+        first_result = Some(result);
+      }
+      let Some(wait) = waits.next() else {
+        return first_result.unwrap();
+      };
+      tokio::time::sleep(wait).await;
+    }
+  }
+}