[#1523] neofs-node: Refactor configuration

1. Move compression parameters to the `shard` section.
2. Allow to use multiple sub-storage components in the blobstor.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

cmd/neofs-node/config/engine/shard/blobstor/blobovnicza/config.go

@@ -29,6 +29,11 @@ func From(c *config.Config) *Config {
 	return (*Config)(c)
 }
 
+// Type returns the storage type.
+func (x *Config) Type() string {
+	return "blobovnicza"
+}
+
 // Size returns the value of "size" config parameter.
 //
 // Returns SizeDefault if the value is not a positive number.

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

@@ -1,122 +1,36 @@
 package blobstorconfig
 
 import (
-	"io/fs"
+	"strconv"
 
 	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
-	blobovniczaconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/engine/shard/blobstor/blobovnicza"
-	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/fstree"
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/engine/shard/blobstor/storage"
 )
 
 // Config is a wrapper over the config section
 // which provides access to BlobStor configurations.
 type Config config.Config
 
-// config defaults
-const (
-	// PermDefault are default permission bits for BlobStor data.
-	PermDefault = 0660
-
-	// ShallowDepthDefault is a default shallow dir depth.
-	ShallowDepthDefault = 4
-
-	// SmallSizeLimitDefault is a default limit of small objects payload in bytes.
-	SmallSizeLimitDefault = 1 << 20
-)
-
 // From wraps config section into Config.
 func From(c *config.Config) *Config {
 	return (*Config)(c)
 }
 
-// Path returns the value of "path" config parameter.
-//
-// Panics if the value is not a non-empty string.
-func (x *Config) Path() string {
-	p := config.String(
-		(*config.Config)(x),
-		"path",
-	)
-
-	if p == "" {
-		panic("blobstor path not set")
+// Storages returns the value of storage subcomponents.
+func (x *Config) Storages() []*storage.Config {
+	var ss []*storage.Config
+	for i := 0; ; i++ {
+		typ := config.String(
+			(*config.Config)(x),
+			strconv.Itoa(i)+".type")
+		switch typ {
+		case "":
+			return ss
+		case "fstree", "blobovnicza":
+			sub := storage.From((*config.Config)(x).Sub(strconv.Itoa(i)))
+			ss = append(ss, sub)
+		default:
+			panic("invalid type")
+		}
 	}
-
-	return p
-}
-
-// Perm returns the value of "perm" config parameter as a fs.FileMode.
-//
-// Returns PermDefault if the value is not a non-zero number.
-func (x *Config) Perm() fs.FileMode {
-	p := config.UintSafe(
-		(*config.Config)(x),
-		"perm",
-	)
-
-	if p == 0 {
-		p = PermDefault
-	}
-
-	return fs.FileMode(p)
-}
-
-// ShallowDepth returns the value of "depth" config parameter.
-//
-// Returns ShallowDepthDefault if the value is out of
-// [1:fstree.MaxDepth] range.
-func (x *Config) ShallowDepth() int {
-	d := config.IntSafe(
-		(*config.Config)(x),
-		"depth",
-	)
-
-	if d >= 1 && d <= fstree.MaxDepth {
-		return int(d)
-	}
-
-	return ShallowDepthDefault
-}
-
-// Compress returns the value of "compress" config parameter.
-//
-// Returns false if the value is not a valid bool.
-func (x *Config) Compress() bool {
-	return config.BoolSafe(
-		(*config.Config)(x),
-		"compress",
-	)
-}
-
-// UncompressableContentTypes returns the value of "compress_skip_content_types" config parameter.
-//
-// Returns nil if a the value is missing or is invalid.
-func (x *Config) UncompressableContentTypes() []string {
-	return config.StringSliceSafe(
-		(*config.Config)(x),
-		"compression_exclude_content_types")
-}
-
-// SmallSizeLimit returns the value of "small_object_size" config parameter.
-//
-// Returns SmallSizeLimitDefault if the value is not a positive number.
-func (x *Config) SmallSizeLimit() uint64 {
-	l := config.SizeInBytesSafe(
-		(*config.Config)(x),
-		"small_object_size",
-	)
-
-	if l > 0 {
-		return l
-	}
-
-	return SmallSizeLimitDefault
-}
-
-// Blobovnicza returns "blobovnicza" subsection as a blobovniczaconfig.Config.
-func (x *Config) Blobovnicza() *blobovniczaconfig.Config {
-	return blobovniczaconfig.From(
-		(*config.Config)(x).
-			Sub("blobovnicza"),
-	)
 }

cmd/neofs-node/config/engine/shard/blobstor/fstree/config.go

@@ -0,0 +1,40 @@
+package fstree
+
+import (
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/fstree"
+)
+
+// Config is a wrapper over the config section
+// which provides access to Blobovnicza configurations.
+type Config config.Config
+
+// DepthDefault is a default shallow dir depth.
+const DepthDefault = 4
+
+// From wraps config section into Config.
+func From(c *config.Config) *Config {
+	return (*Config)(c)
+}
+
+// Type returns the storage type.
+func (x *Config) Type() string {
+	return "fstree"
+}
+
+// Depth returns the value of "depth" config parameter.
+//
+// Returns DepthDefault if the value is out of
+// [1:fstree.MaxDepth] range.
+func (x *Config) Depth() int {
+	d := config.IntSafe(
+		(*config.Config)(x),
+		"depth",
+	)
+
+	if d >= 1 && d <= fstree.MaxDepth {
+		return int(d)
+	}
+
+	return DepthDefault
+}

cmd/neofs-node/config/engine/shard/blobstor/storage/config.go

@@ -0,0 +1,55 @@
+package storage
+
+import (
+	"io/fs"
+
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
+)
+
+type Config config.Config
+
+// PermDefault are default permission bits for BlobStor data.
+const PermDefault = 0660
+
+func From(x *config.Config) *Config {
+	return (*Config)(x)
+}
+
+// Type returns storage type.
+func (x *Config) Type() string {
+	return config.String(
+		(*config.Config)(x),
+		"type")
+}
+
+// Path returns the value of "path" config parameter.
+//
+// Panics if the value is not a non-empty string.
+func (x *Config) Path() string {
+	p := config.String(
+		(*config.Config)(x),
+		"path",
+	)
+
+	if p == "" {
+		panic("blobstor path not set")
+	}
+
+	return p
+}
+
+// Perm returns the value of "perm" config parameter as a fs.FileMode.
+//
+// Returns PermDefault if the value is not a non-zero number.
+func (x *Config) Perm() fs.FileMode {
+	p := config.UintSafe(
+		(*config.Config)(x),
+		"perm",
+	)
+
+	if p == 0 {
+		p = PermDefault
+	}
+
+	return fs.FileMode(p)
+}