jcoffey-dev
6a53d47106
The AGPL asks a modified version to carry prominent notices saying it was modified, and giving a date. Publishing the source is the conveyance that asks for it, so it wants doing before the repository is public rather than at the release. Every upstream file the fork changed now says so in its header, beneath the notice it came with: 164 files, found by diffing against the upstream snapshot branch rather than by guessing, so the list is what actually differs. Files the fork wrote itself already carry their own copyright and need nothing. Upstream's notices are untouched, which its licence requires and which was already true. The README says the same thing in prose, since the obligation is on the work as a whole and not only its Rust files. Builds unchanged: the server and the test binary both compile.
111 lines
3.3 KiB
Rust
111 lines
3.3 KiB
Rust
/*
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* SPDX-FileCopyrightText: 2020 Stalwart Labs LLC <[email protected]>
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*
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* SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
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*
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* Modified by Coffey Labs in 2026 for INBUXA.
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*/
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use prometheus::{
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TextEncoder,
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proto::{Bucket, Counter, Gauge, Histogram, Metric, MetricFamily, MetricType},
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};
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use trc::{Collector, atomics::histogram::AtomicHistogram};
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use crate::Server;
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impl Server {
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pub async fn export_prometheus_metrics(&self) -> trc::Result<String> {
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let mut metrics = Vec::new();
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// Add counters
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for counter in Collector::collect_counters() {
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let mut metric = MetricFamily::default();
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metric.set_name(metric_name(counter.id().as_str()));
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metric.set_help(counter.id().description().into());
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metric.set_field_type(MetricType::COUNTER);
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metric.set_metric(vec![new_counter(counter.value())]);
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metrics.push(metric);
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}
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// Add gauges
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for gauge in Collector::collect_gauges() {
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let mut metric = MetricFamily::default();
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metric.set_name(metric_name(gauge.id().as_str()));
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metric.set_help(gauge.id().description().into());
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metric.set_field_type(MetricType::GAUGE);
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metric.set_metric(vec![new_gauge(gauge.get())]);
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metrics.push(metric);
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}
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// Add histograms
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for histogram in Collector::collect_histograms() {
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let mut metric = MetricFamily::default();
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metric.set_name(metric_name(histogram.id().as_str()));
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metric.set_help(histogram.id().description().into());
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metric.set_field_type(MetricType::HISTOGRAM);
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metric.set_metric(vec![new_histogram(histogram)]);
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metrics.push(metric);
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}
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TextEncoder::new().encode_to_string(&metrics).map_err(|e| {
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trc::EventType::Telemetry(trc::TelemetryEvent::OtelExporterError).reason(e)
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})
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}
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}
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fn metric_name(id: impl AsRef<str>) -> String {
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let id = id.as_ref();
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let mut name = String::with_capacity(id.len());
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for c in id.chars() {
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if c.is_ascii_alphanumeric() {
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name.push(c);
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} else {
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name.push('_');
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}
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}
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name
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}
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fn new_counter(value: u64) -> Metric {
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let mut m = Metric::default();
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let mut counter = Counter::default();
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counter.set_value(value as f64);
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m.set_counter(counter);
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m
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}
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fn new_gauge(value: u64) -> Metric {
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let mut m = Metric::default();
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let mut gauge = Gauge::default();
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gauge.set_value(value as f64);
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m.set_gauge(gauge);
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m
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}
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fn new_histogram(histogram: &AtomicHistogram<12>) -> Metric {
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let mut m = Metric::default();
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let mut h = Histogram::default();
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h.set_sample_count(histogram.count());
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h.set_sample_sum(histogram.sum() as f64);
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h.set_bucket(
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histogram
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.buckets_iter()
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.into_iter()
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.zip(histogram.upper_bounds_iter())
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.map(|(count, upper_bound)| {
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let mut b = Bucket::default();
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b.set_cumulative_count(count);
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b.set_upper_bound(if upper_bound != u64::MAX {
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upper_bound as f64
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} else {
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f64::INFINITY
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});
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b
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})
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.collect(),
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);
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m.set_histogram(h);
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m
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}
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