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misc/metrics: Add protocols label to address-specific metrics (#2982)

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Previously, we would only track the metrics like the number of open connections. With this patch, we extend these metrics with a `protocols` label that contains a "protocol stack". A protocol stack is a multi-address with all variable parts removed. For example, `/ip4/127.0.0.1/tcp/1234` turns into `/ip4/tcp`.

Resolves https://github.com/libp2p/rust-libp2p/issues/2758.
This commit is contained in:
John Turpish
2022-11-15 15:45:14 -05:00
committed by GitHub
parent d5ea93dd71
commit 69efe63229
6 changed files with 138 additions and 26 deletions
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25
misc/metrics/src/identify.rs
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@ -18,9 +18,11 @@
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
use crate::protocol_stack;
use libp2p_core::PeerId;
use prometheus_client::encoding::text::{EncodeMetric, Encoder};
use prometheus_client::encoding::text::{Encode, EncodeMetric, Encoder};
use prometheus_client::metrics::counter::Counter;
use prometheus_client::metrics::family::Family;
use prometheus_client::metrics::histogram::{exponential_buckets, Histogram};
use prometheus_client::metrics::MetricType;
use prometheus_client::registry::Registry;
@ -36,6 +38,7 @@ pub struct Metrics {
received_info_listen_addrs: Histogram,
received_info_protocols: Histogram,
sent: Counter,
listen_addresses: Family<AddressLabels, Counter>,
}
impl Metrics {
@ -100,6 +103,13 @@ impl Metrics {
Box::new(sent.clone()),
);
let listen_addresses = Family::default();
sub_registry.register(
"listen_addresses",
"Number of listen addresses for remote peer per protocol stack",
Box::new(listen_addresses.clone()),
);
Self {
protocols,
error,
@ -108,6 +118,7 @@ impl Metrics {
received_info_listen_addrs,
received_info_protocols,
sent,
listen_addresses,
}
}
}
@ -167,6 +178,13 @@ impl super::Recorder<libp2p_identify::Event> for Metrics {
.observe(info.protocols.len() as f64);
self.received_info_listen_addrs
.observe(info.listen_addrs.len() as f64);
for listen_addr in &info.listen_addrs {
self.listen_addresses
.get_or_create(&AddressLabels {
protocols: protocol_stack::as_string(listen_addr),
})
.inc();
}
}
libp2p_identify::Event::Sent { .. } => {
self.sent.inc();
@ -190,6 +208,11 @@ impl<TBvEv, THandleErr> super::Recorder<libp2p_swarm::SwarmEvent<TBvEv, THandleE
}
}
#[derive(Encode, Hash, Clone, Eq, PartialEq)]
struct AddressLabels {
protocols: String,
}
#[derive(Default, Clone)]
struct Protocols {
peers: Arc<Mutex<HashMap<PeerId, Vec<String>>>>,