[#496] cmd/node: Add morph section to config

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

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

@@ -0,0 +1,54 @@
+package morphconfig
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+)
+
+const (
+	subsection = "morph"
+
+	// DialTimeoutDefault is a default dial timeout of morph chain client connection.
+	DialTimeoutDefault = 5 * time.Second
+)
+
+// RPCEndpoint returns list of values of "rpc_endpoint" config parameter
+// from "morph" section.
+//
+// Throws panic if list is empty.
+func RPCEndpoint(c *config.Config) []string {
+	v := config.StringSliceSafe(c.Sub(subsection), "rpc_endpoint")
+	if len(v) == 0 {
+		panic(fmt.Errorf("no morph chain RPC endpoints, see `morph.rpc_endpoint` section"))
+	}
+
+	return v
+}
+
+// NotificationEndpoint returns list of values of "notification_endpoint" config
+// parameter from "morph" section.
+//
+// Throws panic if list is empty.
+func NotificationEndpoint(c *config.Config) []string {
+	v := config.StringSliceSafe(c.Sub(subsection), "notification_endpoint")
+	if len(v) == 0 {
+		panic(fmt.Errorf("no morph chain notification endpoints, see `morph.notification_endpoint` section"))
+	}
+
+	return v
+}
+
+// DialTimeout returns value of "dial_timeout" config parameter
+// from "morph" section.
+//
+// Returns DialTimeoutDefault if value is not positive duration.
+func DialTimeout(c *config.Config) time.Duration {
+	v := config.DurationSafe(c.Sub(subsection), "dial_timeout")
+	if v != 0 {
+		return v
+	}
+
+	return DialTimeoutDefault
+}