55 lines
1.6 KiB
Rust
55 lines
1.6 KiB
Rust
|
//! A module providing the `JsonRpcErrorCount` metric.
|
||
|
|
|
||
|
|
use ethers::providers::ProviderError;
|
||
|
|
use serde::Serialize;
|
||
|
|
use std::ops::Deref;
|
||
|
|
|
||
|
|
/// A metric counting how many times an expression typed std `Result` as
|
||
|
|
/// returned an `Err` variant.
|
||
|
|
///
|
||
|
|
/// This is a light-weight metric.
|
||
|
|
///
|
||
|
|
/// By default, `ErrorCount` uses a lock-free `u64` `Counter`, which makes sense
|
||
|
|
/// in multithread scenarios. Non-threaded applications can gain performance by
|
||
|
|
/// using a `std::cell:Cell<u64>` instead.
|
||
|
|
#[derive(Clone, Default, Debug, Serialize)]
|
||
|
|
pub struct JsonRpcErrorCount<C: Counter = AtomicInt<u64>>(pub C);
|
||
|
|
|
||
|
|
impl<C: Counter, T> Metric<Result<T, ProviderError>> for JsonRpcErrorCount<C> {}
|
||
|
|
|
||
|
|
impl<C: Counter> Enter for JsonRpcErrorCount<C> {
|
||
|
|
type E = ();
|
||
|
|
fn enter(&self) {}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl<C: Counter, T> OnResult<Result<T, ProviderError>> for JsonRpcErrorCount<C> {
|
||
|
|
/// Unlike the default ErrorCount, this one does not increment for internal jsonrpc errors
|
||
|
|
/// TODO: count errors like this on another helper
|
||
|
|
fn on_result(&self, _: (), r: &Result<T, ProviderError>) -> Advice {
|
||
|
|
match r {
|
||
|
|
Ok(_) => {}
|
||
|
|
Err(ProviderError::JsonRpcClientError(_)) => {
|
||
|
|
self.0.incr();
|
||
|
|
}
|
||
|
|
Err(_) => {
|
||
|
|
// TODO: count jsonrpc errors
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Advice::Return
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl<C: Counter> Clear for JsonRpcErrorCount<C> {
|
||
|
|
fn clear(&self) {
|
||
|
|
self.0.clear()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl<C: Counter> Deref for JsonRpcErrorCount<C> {
|
||
|
|
type Target = C;
|
||
|
|
|
||
|
|
fn deref(&self) -> &Self::Target {
|
||
|
|
&self.0
|
||
|
|
}
|
||
|
|
}
|