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

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

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

@@ -0,0 +1,27 @@
+package policerconfig
+
+import (
+	"time"
+
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+)
+
+const (
+	subsection = "policer"
+
+	// HeadTimeoutDefault is a default object.Head request timeout in policer.
+	HeadTimeoutDefault = 5 * time.Second
+)
+
+// HeadTimeout returns value of "head_timeout" config parameter
+// from "policer" section.
+//
+// Returns HeadTimeoutDefault if value is not positive duration.
+func HeadTimeout(c *config.Config) time.Duration {
+	v := config.DurationSafe(c.Sub(subsection), "head_timeout")
+	if v > 0 {
+		return v
+	}
+
+	return HeadTimeoutDefault
+}

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

@@ -0,0 +1,31 @@
+package policerconfig_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+	policerconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/policer"
+	configtest "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestPolicerSection(t *testing.T) {
+	t.Run("defaults", func(t *testing.T) {
+		empty := configtest.EmptyConfig()
+
+		require.Equal(t, policerconfig.HeadTimeoutDefault, policerconfig.HeadTimeout(empty))
+	})
+
+	const path = "../../../../config/example/node"
+
+	var fileConfigTest = func(c *config.Config) {
+		require.Equal(t, 15*time.Second, policerconfig.HeadTimeout(c))
+	}
+
+	configtest.ForEachFileType(path, fileConfigTest)
+
+	t.Run("ENV", func(t *testing.T) {
+		configtest.ForEnvFileType(path, fileConfigTest)
+	})
+}

config/example/node.env

@@ -41,6 +41,9 @@ NEOFS_MAINCHAIN_RPC_ENDPOINT=https://rpc1.n3.nspcc.ru:30341 https://rpc2.n3.nspc
 # API Client section
 NEOFS_APICLIENT_DIAL_TIMEOUT=15s
 
+# Policer section
+NEOFS_POLICER_HEAD_TIMEOUT=15s
+
 # Storage engine section
 NEOFS_STORAGE_SHARD_NUM=2
 ## 0 shard

config/example/node.json

@@ -61,6 +61,9 @@
   "apiclient": {
     "dial_timeout": "15s"
   },
+  "policer": {
+    "head_timeout": "15s"
+  },
   "storage": {
     "shard_num": 2,
     "shard": {

config/example/node.yaml

@@ -54,6 +54,9 @@ mainchain:
 apiclient:
   dial_timeout: 15s
 
+policer:
+  head_timeout: 15s
+
 storage:
   shard_num: 2
   shard: