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Refactor try_operation_with_failover and Expose It and CoreError publicly from RobustProvider #271

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Merged
0xNeshi merged 2 commits into from
Dec 18, 2025
Merged

Refactor try_operation_with_failover and Expose It and CoreError publicly from RobustProvider #271

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5198b1c
expose try_operation_with_failover publicly
0xNeshi Dec 18, 2025
bf58e27
ref: try_operation_with_failover
0xNeshi Dec 18, 2025
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19 changes: 8 additions & 11 deletions src/robust_provider/provider.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ use alloy::{
transports::{RpcError, TransportErrorKind},
};
use backon::{ExponentialBuilder, Retryable};
use futures::TryFutureExt;
use thiserror::Error;
use tokio::time::{error as TokioError, timeout};
use tracing::{error, info};
Expand All @@ -28,7 +29,7 @@ pub enum Error {

/// Low-level error related to RPC calls and failover logic.
#[derive(Error, Debug)]
pub(crate) enum CoreError {
pub enum CoreError {
#[error("Operation timed out")]
Timeout,
#[error("RPC call failed after exhausting all retry attempts: {0}")]
Expand Down Expand Up @@ -315,7 +316,7 @@ impl<N: Network> RobustProvider<N> {
/// * Returns [`RpcError::Transport(TransportErrorKind::PubsubUnavailable)`] if `require_pubsub`
/// is true and all providers don't support pubsub.
/// * Propagates any [`RpcError<TransportErrorKind>`] from the underlying retries.
pub(crate) async fn try_operation_with_failover<T: Debug, F, Fut>(
pub async fn try_operation_with_failover<T: Debug, F, Fut>(
&self,
operation: F,
require_pubsub: bool,
Expand All @@ -325,15 +326,11 @@ impl<N: Network> RobustProvider<N> {
Fut: Future<Output = Result<T, RpcError<TransportErrorKind>>>,
{
let primary = self.primary();
let result = self.try_provider_with_timeout(primary, &operation).await;

if result.is_ok() {
return result;
}

let last_error = result.unwrap_err();

self.try_fallback_providers(&operation, require_pubsub, last_error).await
self.try_provider_with_timeout(primary, &operation)
.or_else(|last_error| {
self.try_fallback_providers(&operation, require_pubsub, last_error)
})
.await
}

pub(crate) async fn try_fallback_providers<T: Debug, F, Fut>(
Expand Down