1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
//! Node metrics and observability.
//!
//! Atomic counters for messages, lookups, storage,
//! and errors. Accessible via `Tessera::metrics()`.
use std::sync::atomic::{AtomicU64, Ordering};
/// Atomic metrics counters.
pub struct Metrics {
pub messages_sent: AtomicU64,
pub messages_received: AtomicU64,
pub lookups_started: AtomicU64,
pub lookups_completed: AtomicU64,
pub rpc_timeouts: AtomicU64,
pub values_stored: AtomicU64,
pub packets_rejected: AtomicU64,
pub bytes_sent: AtomicU64,
pub bytes_received: AtomicU64,
}
impl Metrics {
pub fn new() -> Self {
Self {
messages_sent: AtomicU64::new(0),
messages_received: AtomicU64::new(0),
lookups_started: AtomicU64::new(0),
lookups_completed: AtomicU64::new(0),
rpc_timeouts: AtomicU64::new(0),
values_stored: AtomicU64::new(0),
packets_rejected: AtomicU64::new(0),
bytes_sent: AtomicU64::new(0),
bytes_received: AtomicU64::new(0),
}
}
/// Take a snapshot of all counters.
pub fn snapshot(&self) -> MetricsSnapshot {
MetricsSnapshot {
messages_sent: self.messages_sent.load(Ordering::Relaxed),
messages_received: self.messages_received.load(Ordering::Relaxed),
lookups_started: self.lookups_started.load(Ordering::Relaxed),
lookups_completed: self.lookups_completed.load(Ordering::Relaxed),
rpc_timeouts: self.rpc_timeouts.load(Ordering::Relaxed),
values_stored: self.values_stored.load(Ordering::Relaxed),
packets_rejected: self.packets_rejected.load(Ordering::Relaxed),
bytes_sent: self.bytes_sent.load(Ordering::Relaxed),
bytes_received: self.bytes_received.load(Ordering::Relaxed),
}
}
}
impl Default for Metrics {
fn default() -> Self {
Self::new()
}
}
/// Snapshot of metrics at a point in time.
#[derive(Debug, Clone)]
pub struct MetricsSnapshot {
pub messages_sent: u64,
pub messages_received: u64,
pub lookups_started: u64,
pub lookups_completed: u64,
pub rpc_timeouts: u64,
pub values_stored: u64,
pub packets_rejected: u64,
pub bytes_sent: u64,
pub bytes_received: u64,
}
impl std::fmt::Display for MetricsSnapshot {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"sent={} recv={} lookups={}/{} timeouts={} \
stored={} rejected={} bytes={}/{}",
self.messages_sent,
self.messages_received,
self.lookups_completed,
self.lookups_started,
self.rpc_timeouts,
self.values_stored,
self.packets_rejected,
self.bytes_sent,
self.bytes_received,
)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn counters_start_zero() {
let m = Metrics::new();
let s = m.snapshot();
assert_eq!(s.messages_sent, 0);
assert_eq!(s.bytes_sent, 0);
}
#[test]
fn increment_and_snapshot() {
let m = Metrics::new();
m.messages_sent.fetch_add(5, Ordering::Relaxed);
m.bytes_sent.fetch_add(1000, Ordering::Relaxed);
let s = m.snapshot();
assert_eq!(s.messages_sent, 5);
assert_eq!(s.bytes_sent, 1000);
}
#[test]
fn display_format() {
let m = Metrics::new();
m.messages_sent.fetch_add(10, Ordering::Relaxed);
let s = m.snapshot();
let text = format!("{s}");
assert!(text.contains("sent=10"));
}
}
|