cumulus_relay_chain_rpc_interface/
metrics.rs

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1// Copyright (C) Parity Technologies (UK) Ltd.
2// This file is part of Cumulus.
3// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
4
5// Cumulus is free software: you can redistribute it and/or modify
6// it under the terms of the GNU General Public License as published by
7// the Free Software Foundation, either version 3 of the License, or
8// (at your option) any later version.
9
10// Cumulus is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13// GNU General Public License for more details.
14
15// You should have received a copy of the GNU General Public License
16// along with Cumulus. If not, see <https://www.gnu.org/licenses/>.
17
18use prometheus::{Error as PrometheusError, HistogramTimer, Registry};
19use prometheus_endpoint::{HistogramOpts, HistogramVec, Opts};
20
21/// Gathers metrics about the blockchain RPC client.
22#[derive(Clone)]
23pub(crate) struct RelaychainRpcMetrics {
24	rpc_request: HistogramVec,
25}
26
27impl RelaychainRpcMetrics {
28	pub(crate) fn register(registry: &Registry) -> Result<Self, PrometheusError> {
29		Ok(Self {
30			rpc_request: prometheus_endpoint::register(
31				HistogramVec::new(
32					HistogramOpts {
33						common_opts: Opts::new(
34							"relay_chain_rpc_interface",
35							"Tracks stats about cumulus relay chain RPC interface",
36						),
37						buckets: prometheus::exponential_buckets(0.001, 4.0, 9)
38							.expect("function parameters are constant and always valid; qed"),
39					},
40					&["method"],
41				)?,
42				registry,
43			)?,
44		})
45	}
46
47	pub(crate) fn start_request_timer(&self, method: &str) -> HistogramTimer {
48		self.rpc_request.with_label_values(&[method]).start_timer()
49	}
50}
cumulus_relay_chain_rpc_interface/metrics.rs

cumulus_relay_chain_rpc_interface/
metrics.rs
