xai-org/x-algorithm · error · anyhow::Error

{metric_label} fetch failed after retries: {e}

Error message

{metric_label} fetch failed after retries: {e}

What it means

This error is raised by strato_fetch in abuse-enforcement-service/service-lib/src/strato.rs after all retry attempts to fetch a Strato (configuration/feature) column have failed. The final underlying transport error e is wrapped with the metric label identifying which column was being fetched. Metrics are recorded with status 'error' before returning, so this failure is observable in the strato metrics.

Source

Thrown at abuse-enforcement-service/service-lib/src/strato.rs:52

    let start = std::time::Instant::now();
    let mut retries: u32 = 0;
    let result = (|| async { strato.fetch(key.clone(), view.clone()).await })
        .retry(strato_retry_strategy())
        .notify(|err, dur| {
            retries += 1;
            warn!("{metric_label} fetch failed (retrying in {dur:?}): {err}");
        })
        .await;
    match result {
        Ok(resp) => {
            let parsed: entities::StratoResponse<T> = serde_json::from_value(resp)
                .map_err(|e| anyhow::anyhow!("{metric_label} parse error: {e}"))?;
            record_strato_metrics(metric_label, "ok", start.elapsed(), retries);
            Ok(parsed.v)
        }
        Err(e) => {
            record_strato_metrics(metric_label, "error", start.elapsed(), retries);
            Err(anyhow::anyhow!(
                "{metric_label} fetch failed after retries: {e}"
            ))
        }
    }
}

#[tracing::instrument(skip_all, fields(is_allowlisted))]
pub async fn fetch_user_allowlist(
    allowlist: Option<&ManhattanAllowlist>,
    user_id: i64,
) -> AllowlistFacts {
    let span = tracing::Span::current();
    let Some(al) = allowlist else {
        span.record("is_allowlisted", false);
        return AllowlistFacts::default();
    };
    match al.get(user_id).await {
        Some(record) => {

View on GitHub (pinned to 24c60942c5)

Solutions

1. Check the wrapped error {e} and strato metrics (label, status=error) to identify whether it's auth, timeout, or not-found
2. Verify the Strato column path/namespace exists and the service has read permissions
3. Inspect network/service-discovery connectivity to the Strato backend from the host
4. If transient, increase retry count or backoff; if permanent (missing column), fix or remove the fetch
5. Wrap callers with a fallback default so enforcement logic can proceed when the column is unavailable

Example fix

// before
let v = fetch_hpr_column(&client).await?;

// after
let v = match fetch_hpr_column(&client).await {
    Ok(v) => v,
    Err(e) => {
        tracing::warn!("hpr column unavailable, using default: {e}");
        default_hpr()
    }
};

// Pre-check connectivity/health of the strato client before fetching
if !strato_client.is_healthy().await {
    return Ok(default_value());
}

// match on the error and degrade to a default rather than propagating
let v = match fetch_hpr_column(&client).await {
    Ok(v) => v,
    Err(e) if e.to_string().contains("fetch failed after retries") => {
        tracing::warn!("strato unavailable, using default: {e}");
        default_hpr()
    }
    Err(e) => return Err(e),
};

When it happens

Trigger: Calling fetch_hpr_column or fetch_uas, which delegate to strato_fetch; the Strato RPC/get call returns errors on every retry attempt (network failure, missing column/namespace, permission denial, or deserialization/transport error), exhausting the retry budget.

Common situations: Strato service unreachable from the deployment (network policy, service discovery issues), the referenced column path being deleted or renamed, auth tokens missing/expired, or timeouts under heavy load causing every retry to fail.

Related errors

• response.status().to_string()
• ttl=-1
• {e}
• Strato error code {}: {}
• Post metadata is required

AI-assisted analysis of xai-org/x-algorithm@24c60942c5 (2026-08-28). Data as JSON: /api/errors/c4162795728c0958. Report an issue: GitHub.