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httphandler: expose Go scheduler metrics (#2561)

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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>
This commit is contained in:
Jan-Otto Kröpke
2026-10-09 01:46:19 +02:00
committed by GitHub
co-authored by Claude Opus 5.5
parent 9c3aa2d977
commit 301eef493b
2 changed files with 10 additions and 3 deletions
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internal/httphandler/httphandler.go
+8 -1
View File
@@ -23,6 +23,7 @@ import (
"log/slog"
"math"
"net/http"
"regexp"
"strconv"
"time"
@@ -80,7 +81,13 @@ func New(logger *slog.Logger, metricCollectors *collector.Collection, options *O
handler.exporterMetricsRegistry.MustRegister(
collectors.NewBuildInfoCollector(),
collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
collectors.NewGoCollector(),
collectors.NewGoCollector(
// Goroutine states, goroutines created, runtime threads and scheduler latency
// help to spot goroutine leaks and CPU starvation of the exporter.
collectors.WithGoCollectorRuntimeMetrics(collectors.GoRuntimeMetricsRule{
Matcher: regexp.MustCompile(`^/sched/(goroutines(-created)?|goroutines/[a-z-]+|threads/total|latencies):`),
}),
),
)
}
internal/httphandler/httphandler_test.go
+2 -2
View File
@@ -47,8 +47,8 @@ func TestMetricsHTTPHandler(t *testing.T) {
included []string
excluded []string
}{
{name: "default", status: http.StatusOK, included: []string{"windows_test_first 42", "windows_test_second 42", "go_goroutines", "windows_exporter_build_info"}},
{name: "disable exporter metrics", options: &httphandler.Options{DisableExporterMetrics: true, TimeoutMargin: 0.5}, status: http.StatusOK, included: []string{"windows_test_first 42", "windows_exporter_build_info"}, excluded: []string{"go_goroutines", "process_cpu_seconds_total"}},
{name: "default", status: http.StatusOK, included: []string{"windows_test_first 42", "windows_test_second 42", "go_goroutines", "windows_exporter_build_info", "go_sched_goroutines_running_goroutines", "go_sched_goroutines_waiting_goroutines", "go_sched_goroutines_created_goroutines_total", "go_sched_threads_total_threads", "go_sched_latencies_seconds_bucket"}},
{name: "disable exporter metrics", options: &httphandler.Options{DisableExporterMetrics: true, TimeoutMargin: 0.5}, status: http.StatusOK, included: []string{"windows_test_first 42", "windows_exporter_build_info"}, excluded: []string{"go_goroutines", "process_cpu_seconds_total", "go_sched_goroutines_running_goroutines"}},
{name: "filter", query: "?collect[]=first", status: http.StatusOK, included: []string{"windows_test_first 42"}, excluded: []string{"windows_test_second"}},
{name: "multiple collectors", query: "?collect[]=first&collect[]=second", status: http.StatusOK, included: []string{"windows_test_first 42", "windows_test_second 42"}},
{name: "unknown collector", query: "?collect[]=missing", status: http.StatusBadRequest, included: []string{"unknown collector missing"}},