[#493] node/config: Implement sections of local object storage

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

cmd/neofs-node/config/engine/shard/gc/config.go

@@ -0,0 +1,59 @@
+package gcconfig
+
+import (
+	"time"
+
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+)
+
+// Config is a wrapper over the config section
+// which provides access to Shard's GC configurations.
+type Config config.Config
+
+// config defaults
+const (
+	// RemoverBatchSizeDefault is a default batch size for Shard GC's remover.
+	RemoverBatchSizeDefault = 100
+
+	// RemoverSleepInterval is a default sleep interval of Shard GC's remover.
+	RemoverSleepIntervalDefault = time.Minute
+)
+
+// From wraps config section into Config.
+func From(c *config.Config) *Config {
+	return (*Config)(c)
+}
+
+// RemoverBatchSize returns value of "remover_batch_size"
+// config parameter.
+//
+// Returns RemoverBatchSizeDefault if value is not a positive number.
+func (x *Config) RemoverBatchSize() int {
+	s := config.IntSafe(
+		(*config.Config)(x),
+		"remover_batch_size",
+	)
+
+	if s > 0 {
+		return int(s)
+	}
+
+	return RemoverBatchSizeDefault
+}
+
+// RemoverSleepInterval returns value of "remover_sleep_interval"
+// config parameter.
+//
+// Returns RemoverSleepIntervalDefault if value is not a positive number.
+func (x *Config) RemoverSleepInterval() time.Duration {
+	s := config.DurationSafe(
+		(*config.Config)(x),
+		"remover_sleep_interval",
+	)
+
+	if s > 0 {
+		return s
+	}
+
+	return RemoverSleepIntervalDefault
+}