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// Copyright 2021 Protocol Labs.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
use prometheus_client::encoding::{EncodeLabelSet, EncodeLabelValue};
use prometheus_client::metrics::counter::Counter;
use prometheus_client::metrics::family::Family;
use prometheus_client::registry::Registry;
pub(crate) struct Metrics {
events: Family<EventLabels, Counter>,
}
impl Metrics {
pub(crate) fn new(registry: &mut Registry) -> Self {
let sub_registry = registry.sub_registry_with_prefix("relay");
let events = Family::default();
sub_registry.register(
"events",
"Events emitted by the relay NetworkBehaviour",
events.clone(),
);
Self { events }
}
}
#[derive(Debug, Clone, Hash, PartialEq, Eq, EncodeLabelSet)]
struct EventLabels {
event: EventType,
}
#[derive(Debug, Clone, Hash, PartialEq, Eq, EncodeLabelValue)]
enum EventType {
ReservationReqAccepted,
ReservationReqAcceptFailed,
ReservationReqDenied,
ReservationReqDenyFailed,
ReservationTimedOut,
CircuitReqDenied,
CircuitReqDenyFailed,
CircuitReqOutboundConnectFailed,
CircuitReqAccepted,
CircuitReqAcceptFailed,
CircuitClosed,
}
impl From<&libp2p_relay::Event> for EventType {
fn from(event: &libp2p_relay::Event) -> Self {
match event {
libp2p_relay::Event::ReservationReqAccepted { .. } => EventType::ReservationReqAccepted,
#[allow(deprecated)]
libp2p_relay::Event::ReservationReqAcceptFailed { .. } => {
EventType::ReservationReqAcceptFailed
}
libp2p_relay::Event::ReservationReqDenied { .. } => EventType::ReservationReqDenied,
#[allow(deprecated)]
libp2p_relay::Event::ReservationReqDenyFailed { .. } => {
EventType::ReservationReqDenyFailed
}
libp2p_relay::Event::ReservationTimedOut { .. } => EventType::ReservationTimedOut,
libp2p_relay::Event::CircuitReqDenied { .. } => EventType::CircuitReqDenied,
#[allow(deprecated)]
libp2p_relay::Event::CircuitReqOutboundConnectFailed { .. } => {
EventType::CircuitReqOutboundConnectFailed
}
#[allow(deprecated)]
libp2p_relay::Event::CircuitReqDenyFailed { .. } => EventType::CircuitReqDenyFailed,
libp2p_relay::Event::CircuitReqAccepted { .. } => EventType::CircuitReqAccepted,
#[allow(deprecated)]
libp2p_relay::Event::CircuitReqAcceptFailed { .. } => EventType::CircuitReqAcceptFailed,
libp2p_relay::Event::CircuitClosed { .. } => EventType::CircuitClosed,
}
}
}
impl super::Recorder<libp2p_relay::Event> for Metrics {
fn record(&self, event: &libp2p_relay::Event) {
self.events
.get_or_create(&EventLabels {
event: event.into(),
})
.inc();
}
}
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