[#577] cmd/node: Add node section to config

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

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

@@ -0,0 +1,81 @@
+package nodeconfig
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+	"github.com/nspcc-dev/neofs-node/pkg/network"
+)
+
+const (
+	subsection = "node"
+
+	attributePrefix = "attribute"
+)
+
+var (
+	errKeyNotSet     = errors.New("empty/not set key address, see `node.key` section")
+	errAddressNotSet = errors.New("empty/not set bootstrap address, see `node.address` section")
+)
+
+// Key returns value of "key" config parameter
+// from "node" section.
+//
+// Panics if value is not a non-empty string.
+func Key(c *config.Config) string {
+	v := config.StringSafe(c.Sub(subsection), "key")
+	if v == "" {
+		panic(errKeyNotSet)
+	}
+
+	// TODO: add string -> `ecdsa.PrivateKey` parsing logic
+	// after https://github.com/nspcc-dev/neofs-node/pull/569.
+
+	return v
+}
+
+// BootstrapAddress returns value of "address" config parameter
+// from "node" section as network.Address.
+//
+// Panics if value is not a valid NeoFS network address
+func BootstrapAddress(c *config.Config) *network.Address {
+	v := config.StringSafe(c.Sub(subsection), "address")
+	if v == "" {
+		panic(errAddressNotSet)
+	}
+
+	addr, err := network.AddressFromString(v)
+	if err != nil {
+		panic(fmt.Errorf("could not convert bootstrap address %s to %T: %w", v, addr, err))
+	}
+
+	return addr
+}
+
+// Attributes returns list of config parameters
+// from "node" section that are set in "attribute_i" format,
+// where i in range [0,100).
+func Attributes(c *config.Config) (attrs []string) {
+	const maxAttributes = 100
+
+	for i := 0; i < maxAttributes; i++ {
+		attr := config.StringSafe(c.Sub(subsection), attributePrefix+"_"+strconv.Itoa(i))
+		if attr == "" {
+			return
+		}
+
+		attrs = append(attrs, attr)
+	}
+
+	return
+}
+
+// Relay returns value of "relay" config parameter
+// from "node" section.
+//
+// Returns false if value is not set.
+func Relay(c *config.Config) bool {
+	return config.BoolSafe(c.Sub(subsection), "relay")
+}

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

@@ -0,0 +1,64 @@
+package nodeconfig
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+	configtest "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/test"
+	"github.com/nspcc-dev/neofs-node/pkg/network"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNodeSection(t *testing.T) {
+	t.Run("defaults", func(t *testing.T) {
+		empty := configtest.EmptyConfig()
+
+		require.PanicsWithError(
+			t,
+			errKeyNotSet.Error(),
+			func() {
+				Key(empty)
+			},
+		)
+
+		require.PanicsWithError(
+			t,
+			errAddressNotSet.Error(),
+			func() {
+				BootstrapAddress(empty)
+			},
+		)
+
+		attribute := Attributes(empty)
+		relay := Relay(empty)
+
+		require.Empty(t, attribute)
+		require.Equal(t, false, relay)
+	})
+
+	const path = "../../../../config/example/node"
+
+	var fileConfigTest = func(c *config.Config) {
+		key := Key(c)
+		addr := BootstrapAddress(c)
+		attributes := Attributes(c)
+		relay := Relay(c)
+
+		expectedAddr, err := network.AddressFromString("s01.neofs.devenv:8080")
+		require.NoError(t, err)
+
+		require.Equal(t, "path/hex/WIF", key)
+		require.Equal(t, true, addr.Equal(expectedAddr))
+		require.Equal(t, true, relay)
+
+		require.Len(t, attributes, 2)
+		require.Equal(t, "Price:11", attributes[0])
+		require.Equal(t, "UN-LOCODE:RU MSK", attributes[1])
+	}
+
+	configtest.ForEachFileType(path, fileConfigTest)
+
+	t.Run("ENV", func(t *testing.T) {
+		configtest.ForEnvFileType(path, fileConfigTest)
+	})
+}