[#493] cmd/node: Add metrics section to config

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

cmd/neofs-node/config/metrics/config.go

@@ -0,0 +1,40 @@
+package metricsconfig
+
+import (
+	"time"
+
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+)
+
+const (
+	subsection = "metrics"
+
+	ShutdownTimeoutDefault = 30 * time.Second
+	AddressDefault         = ""
+)
+
+// ShutdownTimeout returns value of "shutdown_timeout" config parameter
+// from "metrics" section.
+//
+// Returns ShutdownTimeoutDefault if value is not set.
+func ShutdownTimeout(c *config.Config) time.Duration {
+	v := config.DurationSafe(c.Sub(subsection), "shutdown_timeout")
+	if v != 0 {
+		return v
+	}
+
+	return ShutdownTimeoutDefault
+}
+
+// Address returns value of "address" config parameter
+// from "metrics" section.
+//
+// Returns AddressDefault if value is not set.
+func Address(c *config.Config) string {
+	v := config.StringSafe(c.Sub(subsection), "address")
+	if v != "" {
+		return v
+	}
+
+	return AddressDefault
+}

cmd/neofs-node/config/metrics/config_test.go

@@ -0,0 +1,37 @@
+package metricsconfig_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+	metricsconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/metrics"
+	configtest "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestMetricsSection(t *testing.T) {
+	t.Run("defaults", func(t *testing.T) {
+		to := metricsconfig.ShutdownTimeout(configtest.EmptyConfig())
+		addr := metricsconfig.Address(configtest.EmptyConfig())
+
+		require.Equal(t, metricsconfig.ShutdownTimeoutDefault, to)
+		require.Equal(t, metricsconfig.AddressDefault, addr)
+	})
+
+	const path = "../../../../config/example/node"
+
+	var fileConfigTest = func(c *config.Config) {
+		to := metricsconfig.ShutdownTimeout(c)
+		addr := metricsconfig.Address(c)
+
+		require.Equal(t, 15*time.Second, to)
+		require.Equal(t, "127.0.0.1:9090", addr)
+	}
+
+	configtest.ForEachFileType(path, fileConfigTest)
+
+	t.Run("ENV", func(t *testing.T) {
+		configtest.ForEnvFileType(path, fileConfigTest)
+	})
+}

config/example/node.env

@@ -2,3 +2,6 @@ NEOFS_LOGGER_LEVEL=debug
 
 NEOFS_PROFILER_ADDRESS=127.0.0.1:6060
 NEOFS_PROFILER_SHUTDOWN_TIMEOUT=15s
+
+NEOFS_METRICS_ADDRESS=127.0.0.1:9090
+NEOFS_METRICS_SHUTDOWN_TIMEOUT=15s

config/example/node.json

@@ -5,5 +5,9 @@
   "profiler": {
     "address": "127.0.0.1:6060",
     "shutdown_timeout": "15s"
+  },
+  "metrics": {
+    "address": "127.0.0.1:9090",
+    "shutdown_timeout": "15s"
   }
 }

config/example/node.yaml

@@ -3,3 +3,6 @@ logger:
 profiler:
   address: 127.0.0.1:6060
   shutdown_timeout: 15s
+metrics:
+  address: 127.0.0.1:9090
+  shutdown_timeout: 15s