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Add optional prometheus scrape endpoint

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This commit is contained in:
asonix 2022-12-26 10:56:42 -06:00
parent 07b961c28f
commit fafba69258
8 changed files with 633 additions and 419 deletions
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21
Cargo.lock generated
View file

@ -298,7 +298,7 @@ checksum = "2cb2f989d18dd141ab8ae82f64d1a8cdd37e0840f73a406896cf5e99502fab61"
[[package]]
name = "ap-relay"
version = "0.3.77"
version = "0.3.78"
dependencies = [
"activitystreams",
"activitystreams-ext",
@ -320,6 +320,7 @@ dependencies = [
"http-signature-normalization-actix",
"lru",
"metrics",
"metrics-exporter-prometheus",
"metrics-util",
"mime",
"minify-html",
@ -1717,6 +1718,24 @@ dependencies = [
"portable-atomic",
]
[[package]]
name = "metrics-exporter-prometheus"
version = "0.11.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8603921e1f54ef386189335f288441af761e0fc61bcb552168d9cedfe63ebc70"
dependencies = [
"hyper",
"indexmap",
"ipnet",
"metrics",
"metrics-util",
"parking_lot 0.12.1",
"portable-atomic",
"quanta",
"thiserror",
"tokio",
]
[[package]]
name = "metrics-macros"
version = "0.6.0"

5
Cargo.toml
View file

@ -1,7 +1,7 @@
[package]
name = "ap-relay"
description = "A simple activitypub relay"
version = "0.3.77"
version = "0.3.78"
authors = ["asonix <asonix@asonix.dog>"]
license = "AGPL-3.0"
readme = "README.md"
@ -43,6 +43,9 @@ dotenv = "0.15.0"
futures-util = "0.3.17"
lru = "0.8.0"
metrics = "0.20.1"
metrics-exporter-prometheus = { version = "0.11.0", default-features = false, features = [
"http-listener",
] }
metrics-util = "0.14.0"
mime = "0.3.16"
minify-html = "0.10.0"

8
README.md
View file

@ -10,7 +10,7 @@ $ sudo docker run --rm -it \
-e ADDR=0.0.0.0 \
-e SLED_PATH=/mnt/sled/db-0.34 \
-p 8080:8080 \
asonix/relay:0.3.73
asonix/relay:0.3.78
```
This will launch the relay with the database stored in "./sled/db-0.34" and listening on port 8080
#### Cargo
@ -103,6 +103,8 @@ TLS_CERT=/path/to/cert
FOOTER_BLURB="Contact <a href=\"https://masto.asonix.dog/@asonix\">@asonix</a> for inquiries"
LOCAL_DOMAINS=masto.asonix.dog
LOCAL_BLURB="<p>Welcome to my cool relay where I have cool relay things happening. I hope you enjoy your stay!</p>"
PROMETHEUS_ADDR=0.0.0.0
PROMETHEUS_PORT=9000
```
#### Descriptions
@ -146,6 +148,10 @@ Optional - Add custom notes in the footer of the page
Optional - domains of mastodon servers run by the same admin as the relay
##### `LOCAL_BLURB`
Optional - description for the relay
##### `PROMETHEUS_ADDR`
Optional - Address to bind to for serving the prometheus scrape endpoint
##### `PROMETHEUS_PORT`
Optional - Port to bind to for serving the prometheus scrape endpoint
### Subscribing
Mastodon admins can subscribe to this relay by adding the `/inbox` route to their relay settings.

417
src/collector.rs
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@ -1,414 +1,5 @@
use metrics::{Key, Recorder, SetRecorderError};
use metrics_util::{
registry::{AtomicStorage, GenerationalStorage, Recency, Registry},
MetricKindMask, Summary,
};
use quanta::Clock;
use std::{
collections::{BTreeMap, HashMap},
sync::{atomic::Ordering, Arc, RwLock},
time::Duration,
};
mod double;
mod stats;
const SECONDS: u64 = 1;
const MINUTES: u64 = 60 * SECONDS;
const HOURS: u64 = 60 * MINUTES;
const DAYS: u64 = 24 * HOURS;
type DistributionMap = BTreeMap<Vec<(String, String)>, Summary>;
#[derive(Clone)]
pub struct MemoryCollector {
inner: Arc<Inner>,
}
struct Inner {
descriptions: RwLock<HashMap<String, metrics::SharedString>>,
distributions: RwLock<HashMap<String, DistributionMap>>,
recency: Recency<Key>,
registry: Registry<Key, GenerationalStorage<AtomicStorage>>,
}
#[derive(Debug, serde::Deserialize, serde::Serialize)]
struct Counter {
labels: BTreeMap<String, String>,
value: u64,
}
impl std::fmt::Display for Counter {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let labels = self
.labels
.iter()
.map(|(k, v)| format!("{}: {}", k, v))
.collect::<Vec<_>>()
.join(", ");
write!(f, "{} - {}", labels, self.value)
}
}
#[derive(Debug, serde::Deserialize, serde::Serialize)]
struct Gauge {
labels: BTreeMap<String, String>,
value: f64,
}
impl std::fmt::Display for Gauge {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let labels = self
.labels
.iter()
.map(|(k, v)| format!("{}: {}", k, v))
.collect::<Vec<_>>()
.join(", ");
write!(f, "{} - {}", labels, self.value)
}
}
#[derive(Debug, serde::Deserialize, serde::Serialize)]
struct Histogram {
labels: BTreeMap<String, String>,
value: Vec<(f64, Option<f64>)>,
}
impl std::fmt::Display for Histogram {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let labels = self
.labels
.iter()
.map(|(k, v)| format!("{}: {}", k, v))
.collect::<Vec<_>>()
.join(", ");
let value = self
.value
.iter()
.map(|(k, v)| {
if let Some(v) = v {
format!("{}: {:.6}", k, v)
} else {
format!("{}: None,", k)
}
})
.collect::<Vec<_>>()
.join(", ");
write!(f, "{} - {}", labels, value)
}
}
#[derive(Debug, serde::Deserialize, serde::Serialize)]
pub(crate) struct Snapshot {
counters: HashMap<String, Vec<Counter>>,
gauges: HashMap<String, Vec<Gauge>>,
histograms: HashMap<String, Vec<Histogram>>,
}
const PAIRS: [((&str, &str), &str); 2] = [
(
(
"background-jobs.worker.started",
"background-jobs.worker.finished",
),
"background-jobs.worker.running",
),
(
(
"background-jobs.job.started",
"background-jobs.job.finished",
),
"background-jobs.job.running",
),
];
#[derive(Default)]
struct MergeCounter {
start: Option<Counter>,
finish: Option<Counter>,
}
impl MergeCounter {
fn merge(self) -> Option<Counter> {
match (self.start, self.finish) {
(Some(start), Some(end)) => Some(Counter {
labels: start.labels,
value: start.value.saturating_sub(end.value),
}),
(Some(only), None) => Some(only),
(None, Some(only)) => Some(Counter {
labels: only.labels,
value: 0,
}),
(None, None) => None,
}
}
}
impl Snapshot {
pub(crate) fn present(self) {
if !self.counters.is_empty() {
println!("Counters");
let mut merging = HashMap::new();
for (key, counters) in self.counters {
if let Some(((start, _), name)) = PAIRS
.iter()
.find(|((start, finish), _)| *start == key || *finish == key)
{
let entry = merging.entry(name).or_insert_with(HashMap::new);
for counter in counters {
let mut merge_counter = entry
.entry(counter.labels.clone())
.or_insert_with(MergeCounter::default);
if key == *start {
merge_counter.start = Some(counter);
} else {
merge_counter.finish = Some(counter);
}
}
continue;
}
println!("\t{}", key);
for counter in counters {
println!("\t\t{}", counter);
}
}
for (key, counters) in merging {
println!("\t{}", key);
for (_, counter) in counters {
if let Some(counter) = counter.merge() {
println!("\t\t{}", counter);
}
}
}
}
if !self.gauges.is_empty() {
println!("Gauges");
for (key, gauges) in self.gauges {
println!("\t{}", key);
for gauge in gauges {
println!("\t\t{}", gauge);
}
}
}
if !self.histograms.is_empty() {
println!("Histograms");
for (key, histograms) in self.histograms {
println!("\t{}", key);
for histogram in histograms {
println!("\t\t{}", histogram);
}
}
}
}
}
fn key_to_parts(key: &Key) -> (String, Vec<(String, String)>) {
let labels = key
.labels()
.into_iter()
.map(|label| (label.key().to_string(), label.value().to_string()))
.collect();
let name = key.name().to_string();
(name, labels)
}
impl Inner {
fn snapshot_counters(&self) -> HashMap<String, Vec<Counter>> {
let mut counters = HashMap::new();
for (key, counter) in self.registry.get_counter_handles() {
let gen = counter.get_generation();
if !self.recency.should_store_counter(&key, gen, &self.registry) {
continue;
}
let (name, labels) = key_to_parts(&key);
let value = counter.get_inner().load(Ordering::Acquire);
counters.entry(name).or_insert_with(Vec::new).push(Counter {
labels: labels.into_iter().collect(),
value,
});
}
counters
}
fn snapshot_gauges(&self) -> HashMap<String, Vec<Gauge>> {
let mut gauges = HashMap::new();
for (key, gauge) in self.registry.get_gauge_handles() {
let gen = gauge.get_generation();
if !self.recency.should_store_gauge(&key, gen, &self.registry) {
continue;
}
let (name, labels) = key_to_parts(&key);
let value = f64::from_bits(gauge.get_inner().load(Ordering::Acquire));
gauges.entry(name).or_insert_with(Vec::new).push(Gauge {
labels: labels.into_iter().collect(),
value,
})
}
gauges
}
fn snapshot_histograms(&self) -> HashMap<String, Vec<Histogram>> {
for (key, histogram) in self.registry.get_histogram_handles() {
let gen = histogram.get_generation();
let (name, labels) = key_to_parts(&key);
if !self
.recency
.should_store_histogram(&key, gen, &self.registry)
{
let mut d = self.distributions.write().unwrap();
let delete_by_name = if let Some(by_name) = d.get_mut(&name) {
by_name.remove(&labels);
by_name.is_empty()
} else {
false
};
drop(d);
if delete_by_name {
self.descriptions.write().unwrap().remove(&name);
}
continue;
}
let mut d = self.distributions.write().unwrap();
let outer_entry = d.entry(name.clone()).or_insert_with(BTreeMap::new);
let entry = outer_entry
.entry(labels)
.or_insert_with(Summary::with_defaults);
histogram.get_inner().clear_with(|samples| {
for sample in samples {
entry.add(*sample);
}
})
}
let d = self.distributions.read().unwrap().clone();
d.into_iter()
.map(|(key, value)| {
(
key,
value
.into_iter()
.map(|(labels, summary)| Histogram {
labels: labels.into_iter().collect(),
value: [0.001, 0.01, 0.05, 0.1, 0.5, 0.9, 0.99, 1.0]
.into_iter()
.map(|q| (q, summary.quantile(q)))
.collect(),
})
.collect(),
)
})
.collect()
}
fn snapshot(&self) -> Snapshot {
Snapshot {
counters: self.snapshot_counters(),
gauges: self.snapshot_gauges(),
histograms: self.snapshot_histograms(),
}
}
}
impl MemoryCollector {
pub(crate) fn new() -> Self {
MemoryCollector {
inner: Arc::new(Inner {
descriptions: Default::default(),
distributions: Default::default(),
recency: Recency::new(
Clock::new(),
MetricKindMask::ALL,
Some(Duration::from_secs(5 * DAYS)),
),
registry: Registry::new(GenerationalStorage::atomic()),
}),
}
}
pub(crate) fn install(&self) -> Result<(), SetRecorderError> {
metrics::set_boxed_recorder(Box::new(self.clone()))
}
pub(crate) fn snapshot(&self) -> Snapshot {
self.inner.snapshot()
}
fn add_description_if_missing(
&self,
key: &metrics::KeyName,
description: metrics::SharedString,
) {
let mut d = self.inner.descriptions.write().unwrap();
d.entry(key.as_str().to_owned()).or_insert(description);
}
}
impl Recorder for MemoryCollector {
fn describe_counter(
&self,
key: metrics::KeyName,
_: Option<metrics::Unit>,
description: metrics::SharedString,
) {
self.add_description_if_missing(&key, description)
}
fn describe_gauge(
&self,
key: metrics::KeyName,
_: Option<metrics::Unit>,
description: metrics::SharedString,
) {
self.add_description_if_missing(&key, description)
}
fn describe_histogram(
&self,
key: metrics::KeyName,
_: Option<metrics::Unit>,
description: metrics::SharedString,
) {
self.add_description_if_missing(&key, description)
}
fn register_counter(&self, key: &Key) -> metrics::Counter {
self.inner
.registry
.get_or_create_counter(key, |c| c.clone().into())
}
fn register_gauge(&self, key: &Key) -> metrics::Gauge {
self.inner
.registry
.get_or_create_gauge(key, |c| c.clone().into())
}
fn register_histogram(&self, key: &Key) -> metrics::Histogram {
self.inner
.registry
.get_or_create_histogram(key, |c| c.clone().into())
}
}
pub(crate) use double::DoubleRecorder;
pub(crate) use stats::{MemoryCollector, Snapshot};

133
src/collector/double.rs Normal file
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@ -0,0 +1,133 @@
use metrics::{CounterFn, GaugeFn, HistogramFn, Key, Recorder, SetRecorderError};
use std::sync::Arc;
#[derive(Clone)]
pub(crate) struct DoubleRecorder<R, S> {
first: R,
second: S,
}
struct DoubleCounter {
first: metrics::Counter,
second: metrics::Counter,
}
struct DoubleGauge {
first: metrics::Gauge,
second: metrics::Gauge,
}
struct DoubleHistogram {
first: metrics::Histogram,
second: metrics::Histogram,
}
impl<R, S> DoubleRecorder<R, S> {
pub(crate) fn new(first: R, second: S) -> Self {
DoubleRecorder { first, second }
}
pub(crate) fn install(self) -> Result<(), SetRecorderError>
where
R: Recorder + 'static,
S: Recorder + 'static,
{
metrics::set_boxed_recorder(Box::new(self))
}
}
impl<R, S> Recorder for DoubleRecorder<R, S>
where
R: Recorder,
S: Recorder,
{
fn describe_counter(
&self,
key: metrics::KeyName,
unit: Option<metrics::Unit>,
description: metrics::SharedString,
) {
self.first
.describe_counter(key.clone(), unit, description.clone());
self.second.describe_counter(key, unit, description);
}
fn describe_gauge(
&self,
key: metrics::KeyName,
unit: Option<metrics::Unit>,
description: metrics::SharedString,
) {
self.first
.describe_gauge(key.clone(), unit, description.clone());
self.second.describe_gauge(key, unit, description);
}
fn describe_histogram(
&self,
key: metrics::KeyName,
unit: Option<metrics::Unit>,
description: metrics::SharedString,
) {
self.first
.describe_histogram(key.clone(), unit, description.clone());
self.second.describe_histogram(key, unit, description);
}
fn register_counter(&self, key: &Key) -> metrics::Counter {
let first = self.first.register_counter(key);
let second = self.second.register_counter(key);
metrics::Counter::from_arc(Arc::new(DoubleCounter { first, second }))
}
fn register_gauge(&self, key: &Key) -> metrics::Gauge {
let first = self.first.register_gauge(key);
let second = self.second.register_gauge(key);
metrics::Gauge::from_arc(Arc::new(DoubleGauge { first, second }))
}
fn register_histogram(&self, key: &Key) -> metrics::Histogram {
let first = self.first.register_histogram(key);
let second = self.second.register_histogram(key);
metrics::Histogram::from_arc(Arc::new(DoubleHistogram { first, second }))
}
}
impl CounterFn for DoubleCounter {
fn increment(&self, value: u64) {
self.first.increment(value);
self.second.increment(value);
}
fn absolute(&self, value: u64) {
self.first.absolute(value);
self.second.absolute(value);
}
}
impl GaugeFn for DoubleGauge {
fn increment(&self, value: f64) {
self.first.increment(value);
self.second.increment(value);
}
fn decrement(&self, value: f64) {
self.first.decrement(value);
self.second.decrement(value);
}
fn set(&self, value: f64) {
self.first.set(value);
self.second.set(value);
}
}
impl HistogramFn for DoubleHistogram {
fn record(&self, value: f64) {
self.first.record(value);
self.second.record(value);
}
}

414
src/collector/stats.rs Normal file
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@ -0,0 +1,414 @@
use metrics::{Key, Recorder, SetRecorderError};
use metrics_util::{
registry::{AtomicStorage, GenerationalStorage, Recency, Registry},
MetricKindMask, Summary,
};
use quanta::Clock;
use std::{
collections::{BTreeMap, HashMap},
sync::{atomic::Ordering, Arc, RwLock},
time::Duration,
};
const SECONDS: u64 = 1;
const MINUTES: u64 = 60 * SECONDS;
const HOURS: u64 = 60 * MINUTES;
const DAYS: u64 = 24 * HOURS;
type DistributionMap = BTreeMap<Vec<(String, String)>, Summary>;
#[derive(Clone)]
pub struct MemoryCollector {
inner: Arc<Inner>,
}
struct Inner {
descriptions: RwLock<HashMap<String, metrics::SharedString>>,
distributions: RwLock<HashMap<String, DistributionMap>>,
recency: Recency<Key>,
registry: Registry<Key, GenerationalStorage<AtomicStorage>>,
}
#[derive(Debug, serde::Deserialize, serde::Serialize)]
struct Counter {
labels: BTreeMap<String, String>,
value: u64,
}
impl std::fmt::Display for Counter {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let labels = self
.labels
.iter()
.map(|(k, v)| format!("{}: {}", k, v))
.collect::<Vec<_>>()
.join(", ");
write!(f, "{} - {}", labels, self.value)
}
}
#[derive(Debug, serde::Deserialize, serde::Serialize)]
struct Gauge {
labels: BTreeMap<String, String>,
value: f64,
}
impl std::fmt::Display for Gauge {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let labels = self
.labels
.iter()
.map(|(k, v)| format!("{}: {}", k, v))
.collect::<Vec<_>>()
.join(", ");
write!(f, "{} - {}", labels, self.value)
}
}
#[derive(Debug, serde::Deserialize, serde::Serialize)]
struct Histogram {
labels: BTreeMap<String, String>,
value: Vec<(f64, Option<f64>)>,
}
impl std::fmt::Display for Histogram {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let labels = self
.labels
.iter()
.map(|(k, v)| format!("{}: {}", k, v))
.collect::<Vec<_>>()
.join(", ");
let value = self
.value
.iter()
.map(|(k, v)| {
if let Some(v) = v {
format!("{}: {:.6}", k, v)
} else {
format!("{}: None,", k)
}
})
.collect::<Vec<_>>()
.join(", ");
write!(f, "{} - {}", labels, value)
}
}
#[derive(Debug, serde::Deserialize, serde::Serialize)]
pub(crate) struct Snapshot {
counters: HashMap<String, Vec<Counter>>,
gauges: HashMap<String, Vec<Gauge>>,
histograms: HashMap<String, Vec<Histogram>>,
}
const PAIRS: [((&str, &str), &str); 2] = [
(
(
"background-jobs.worker.started",
"background-jobs.worker.finished",
),
"background-jobs.worker.running",
),
(
(
"background-jobs.job.started",
"background-jobs.job.finished",
),
"background-jobs.job.running",
),
];
#[derive(Default)]
struct MergeCounter {
start: Option<Counter>,
finish: Option<Counter>,
}
impl MergeCounter {
fn merge(self) -> Option<Counter> {
match (self.start, self.finish) {
(Some(start), Some(end)) => Some(Counter {
labels: start.labels,
value: start.value.saturating_sub(end.value),
}),
(Some(only), None) => Some(only),
(None, Some(only)) => Some(Counter {
labels: only.labels,
value: 0,
}),
(None, None) => None,
}
}
}
impl Snapshot {
pub(crate) fn present(self) {
if !self.counters.is_empty() {
println!("Counters");
let mut merging = HashMap::new();
for (key, counters) in self.counters {
if let Some(((start, _), name)) = PAIRS
.iter()
.find(|((start, finish), _)| *start == key || *finish == key)
{
let entry = merging.entry(name).or_insert_with(HashMap::new);
for counter in counters {
let mut merge_counter = entry
.entry(counter.labels.clone())
.or_insert_with(MergeCounter::default);
if key == *start {
merge_counter.start = Some(counter);
} else {
merge_counter.finish = Some(counter);
}
}
continue;
}
println!("\t{}", key);
for counter in counters {
println!("\t\t{}", counter);
}
}
for (key, counters) in merging {
println!("\t{}", key);
for (_, counter) in counters {
if let Some(counter) = counter.merge() {
println!("\t\t{}", counter);
}
}
}
}
if !self.gauges.is_empty() {
println!("Gauges");
for (key, gauges) in self.gauges {
println!("\t{}", key);
for gauge in gauges {
println!("\t\t{}", gauge);
}
}
}
if !self.histograms.is_empty() {
println!("Histograms");
for (key, histograms) in self.histograms {
println!("\t{}", key);
for histogram in histograms {
println!("\t\t{}", histogram);
}
}
}
}
}
fn key_to_parts(key: &Key) -> (String, Vec<(String, String)>) {
let labels = key
.labels()
.into_iter()
.map(|label| (label.key().to_string(), label.value().to_string()))
.collect();
let name = key.name().to_string();
(name, labels)
}
impl Inner {
fn snapshot_counters(&self) -> HashMap<String, Vec<Counter>> {
let mut counters = HashMap::new();
for (key, counter) in self.registry.get_counter_handles() {
let gen = counter.get_generation();
if !self.recency.should_store_counter(&key, gen, &self.registry) {
continue;
}
let (name, labels) = key_to_parts(&key);
let value = counter.get_inner().load(Ordering::Acquire);
counters.entry(name).or_insert_with(Vec::new).push(Counter {
labels: labels.into_iter().collect(),
value,
});
}
counters
}
fn snapshot_gauges(&self) -> HashMap<String, Vec<Gauge>> {
let mut gauges = HashMap::new();
for (key, gauge) in self.registry.get_gauge_handles() {
let gen = gauge.get_generation();
if !self.recency.should_store_gauge(&key, gen, &self.registry) {
continue;
}
let (name, labels) = key_to_parts(&key);
let value = f64::from_bits(gauge.get_inner().load(Ordering::Acquire));
gauges.entry(name).or_insert_with(Vec::new).push(Gauge {
labels: labels.into_iter().collect(),
value,
})
}
gauges
}
fn snapshot_histograms(&self) -> HashMap<String, Vec<Histogram>> {
for (key, histogram) in self.registry.get_histogram_handles() {
let gen = histogram.get_generation();
let (name, labels) = key_to_parts(&key);
if !self
.recency
.should_store_histogram(&key, gen, &self.registry)
{
let mut d = self.distributions.write().unwrap();
let delete_by_name = if let Some(by_name) = d.get_mut(&name) {
by_name.remove(&labels);
by_name.is_empty()
} else {
false
};
drop(d);
if delete_by_name {
self.descriptions.write().unwrap().remove(&name);
}
continue;
}
let mut d = self.distributions.write().unwrap();
let outer_entry = d.entry(name.clone()).or_insert_with(BTreeMap::new);
let entry = outer_entry
.entry(labels)
.or_insert_with(Summary::with_defaults);
histogram.get_inner().clear_with(|samples| {
for sample in samples {
entry.add(*sample);
}
})
}
let d = self.distributions.read().unwrap().clone();
d.into_iter()
.map(|(key, value)| {
(
key,
value
.into_iter()
.map(|(labels, summary)| Histogram {
labels: labels.into_iter().collect(),
value: [0.001, 0.01, 0.05, 0.1, 0.5, 0.9, 0.99, 1.0]
.into_iter()
.map(|q| (q, summary.quantile(q)))
.collect(),
})
.collect(),
)
})
.collect()
}
fn snapshot(&self) -> Snapshot {
Snapshot {
counters: self.snapshot_counters(),
gauges: self.snapshot_gauges(),
histograms: self.snapshot_histograms(),
}
}
}
impl MemoryCollector {
pub(crate) fn new() -> Self {
MemoryCollector {
inner: Arc::new(Inner {
descriptions: Default::default(),
distributions: Default::default(),
recency: Recency::new(
Clock::new(),
MetricKindMask::ALL,
Some(Duration::from_secs(5 * DAYS)),
),
registry: Registry::new(GenerationalStorage::atomic()),
}),
}
}
pub(crate) fn snapshot(&self) -> Snapshot {
self.inner.snapshot()
}
fn add_description_if_missing(
&self,
key: &metrics::KeyName,
description: metrics::SharedString,
) {
let mut d = self.inner.descriptions.write().unwrap();
d.entry(key.as_str().to_owned()).or_insert(description);
}
pub(crate) fn install(&self) -> Result<(), SetRecorderError> {
metrics::set_boxed_recorder(Box::new(self.clone()))
}
}
impl Recorder for MemoryCollector {
fn describe_counter(
&self,
key: metrics::KeyName,
_: Option<metrics::Unit>,
description: metrics::SharedString,
) {
self.add_description_if_missing(&key, description)
}
fn describe_gauge(
&self,
key: metrics::KeyName,
_: Option<metrics::Unit>,
description: metrics::SharedString,
) {
self.add_description_if_missing(&key, description)
}
fn describe_histogram(
&self,
key: metrics::KeyName,
_: Option<metrics::Unit>,
description: metrics::SharedString,
) {
self.add_description_if_missing(&key, description)
}
fn register_counter(&self, key: &Key) -> metrics::Counter {
self.inner
.registry
.get_or_create_counter(key, |c| c.clone().into())
}
fn register_gauge(&self, key: &Key) -> metrics::Gauge {
self.inner
.registry
.get_or_create_gauge(key, |c| c.clone().into())
}
fn register_histogram(&self, key: &Key) -> metrics::Histogram {
self.inner
.registry
.get_or_create_histogram(key, |c| c.clone().into())
}
}

38
src/config.rs
View file

@ -14,7 +14,11 @@ use config::Environment;
use http_signature_normalization_actix::prelude::VerifyDigest;
use rustls::{Certificate, PrivateKey};
use sha2::{Digest, Sha256};
use std::{io::BufReader, net::IpAddr, path::PathBuf};
use std::{
io::BufReader,
net::{IpAddr, SocketAddr},
path::PathBuf,
};
use uuid::Uuid;
#[derive(Clone, Debug, serde::Deserialize)]
@ -38,6 +42,8 @@ pub(crate) struct ParsedConfig {
footer_blurb: Option<String>,
local_domains: Option<String>,
local_blurb: Option<String>,
prometheus_addr: Option<IpAddr>,
prometheus_port: Option<u16>,
}
#[derive(Clone)]
@ -60,6 +66,7 @@ pub struct Config {
footer_blurb: Option<String>,
local_domains: Vec<String>,
local_blurb: Option<String>,
prometheus_config: Option<PrometheusConfig>,
}
#[derive(Clone)]
@ -68,6 +75,12 @@ struct TlsConfig {
cert: PathBuf,
}
#[derive(Clone, Debug)]
struct PrometheusConfig {
addr: IpAddr,
port: u16,
}
#[derive(Debug)]
pub enum UrlKind {
Activity,
@ -120,6 +133,7 @@ impl std::fmt::Debug for Config {
.field("footer_blurb", &self.footer_blurb)
.field("local_domains", &self.local_domains)
.field("local_blurb", &self.local_blurb)
.field("prometheus_config", &self.prometheus_config)
.finish()
}
}
@ -146,6 +160,8 @@ impl Config {
.set_default("footer_blurb", None as Option<&str>)?
.set_default("local_domains", None as Option<&str>)?
.set_default("local_blurb", None as Option<&str>)?
.set_default("prometheus_addr", None as Option<&str>)?
.set_default("prometheus_port", None as Option<u16>)?
.add_source(Environment::default())
.build()?;
@ -174,6 +190,19 @@ impl Config {
.map(|d| d.to_string())
.collect();
let prometheus_config = match (config.prometheus_addr, config.prometheus_port) {
(Some(addr), Some(port)) => Some(PrometheusConfig { addr, port }),
(Some(_), None) => {
tracing::warn!("PROMETHEUS_ADDR is set but PROMETHEUS_PORT is not set, not building Prometheus config");
None
}
(None, Some(_)) => {
tracing::warn!("PROMETHEUS_PORT is set but PROMETHEUS_ADDR is not set, not building Prometheus config");
None
}
(None, None) => None,
};
Ok(Config {
hostname: config.hostname,
addr: config.addr,
@ -193,9 +222,16 @@ impl Config {
footer_blurb: config.footer_blurb,
local_domains,
local_blurb: config.local_blurb,
prometheus_config,
})
}
pub(crate) fn prometheus_bind_address(&self) -> Option<SocketAddr> {
let config = self.prometheus_config.as_ref()?;
Some((config.addr, config.port).into())
}
pub(crate) fn open_keys(&self) -> Result<Option<(Vec<Certificate>, PrivateKey)>, Error> {
let tls = if let Some(tls) = &self.tls {
tls

16
src/main.rs
View file

@ -4,10 +4,11 @@
use activitystreams::iri_string::types::IriString;
use actix_rt::task::JoinHandle;
use actix_web::{middleware::Compress, web, App, HttpServer};
use collector::MemoryCollector;
use collector::{DoubleRecorder, MemoryCollector};
#[cfg(feature = "console")]
use console_subscriber::ConsoleLayer;
use http_signature_normalization_actix::middleware::VerifySignature;
use metrics_exporter_prometheus::PrometheusBuilder;
use opentelemetry::{sdk::Resource, KeyValue};
use opentelemetry_otlp::WithExportConfig;
use rustls::ServerConfig;
@ -103,8 +104,19 @@ async fn main() -> Result<(), anyhow::Error> {
let config = Config::build()?;
init_subscriber(Config::software_name(), config.opentelemetry_url())?;
let collector = MemoryCollector::new();
collector.install()?;
if let Some(bind_addr) = config.prometheus_bind_address() {
let (recorder, exporter) = PrometheusBuilder::new()
.with_http_listener(bind_addr)
.build()?;
actix_rt::spawn(exporter);
DoubleRecorder::new(recorder, collector.clone()).install()?;
} else {
collector.install()?;
}
let args = Args::new();