[#125] ir: Reconfigure pprof and metrics on SIGHUP

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

cmd/frostfs-ir/metrics.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/metrics"
+)
+
+const (
+	prometheusEnabledKey         = "prometheus.enabled"
+	prometheusAddressKey         = "prometheus.address"
+	prometheusShutdownTimeoutKey = "prometheus.shutdown_timeout"
+)
+
+func newMetricsComponent() *httpComponent {
+	return &httpComponent{
+		name:               "prometheus",
+		enabledKey:         prometheusEnabledKey,
+		addressKey:         prometheusAddressKey,
+		shutdownTimeoutKey: prometheusShutdownTimeoutKey,
+		handler:            metrics.Handler(),
+	}
+}