[#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/config.go

@@ -39,7 +39,7 @@ func IterateShards(c *config.Config, required bool, f func(*shardconfig.Config))
 		// must have different paths, so if it is missing, the shard is not here.
 		// At the same time checking for "blobstor" section doesn't work proper
 		// with configuration via the environment.
-		if (*config.Config)(sc).Value("blobstor.path") == nil {
+		if (*config.Config)(sc).Value("metabase.path") == nil {
 			break
 		}
 		(*config.Config)(sc).SetDefault(def)

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

@@ -8,6 +8,8 @@ import (
 	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
 	engineconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/engine"
 	shardconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/engine/shard"
+	blobovniczaconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/engine/shard/blobstor/blobovnicza"
+	fstreeconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/engine/shard/blobstor/fstree"
 	piloramaconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/engine/shard/pilorama"
 	configtest "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/test"
 	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard/mode"
@@ -53,7 +55,7 @@ func TestEngineSection(t *testing.T) {
 			wc := sc.WriteCache()
 			meta := sc.Metabase()
 			blob := sc.BlobStor()
-			blz := blob.Blobovnicza()
+			ss := blob.Storages()
 			pl := sc.Pilorama()
 			gc := sc.GC()
 
@@ -79,18 +81,23 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, 100, meta.BoltDB().MaxBatchSize())
 				require.Equal(t, 10*time.Millisecond, meta.BoltDB().MaxBatchDelay())
 
-				require.Equal(t, "tmp/0/blob", blob.Path())
-				require.EqualValues(t, 0644, blob.Perm())
-				require.Equal(t, true, blob.Compress())
-				require.Equal(t, []string{"audio/*", "video/*"}, blob.UncompressableContentTypes())
-				require.EqualValues(t, 5, blob.ShallowDepth())
-				require.EqualValues(t, 102400, blob.SmallSizeLimit())
+				require.Equal(t, true, sc.Compress())
+				require.Equal(t, []string{"audio/*", "video/*"}, sc.UncompressableContentTypes())
+				require.EqualValues(t, 102400, sc.SmallSizeLimit())
 
+				require.Equal(t, 2, len(ss))
+				blz := blobovniczaconfig.From((*config.Config)(ss[0]))
+				require.Equal(t, "tmp/0/blob/blobovnicza", ss[0].Path())
+				require.EqualValues(t, 0644, blz.BoltDB().Perm())
 				require.EqualValues(t, 4194304, blz.Size())
 				require.EqualValues(t, 1, blz.ShallowDepth())
 				require.EqualValues(t, 4, blz.ShallowWidth())
 				require.EqualValues(t, 50, blz.OpenedCacheSize())
 
+				require.Equal(t, "tmp/0/blob", ss[1].Path())
+				require.EqualValues(t, 0644, ss[1].Perm())
+				require.EqualValues(t, 5, fstreeconfig.From((*config.Config)(ss[1])).Depth())
+
 				require.EqualValues(t, 150, gc.RemoverBatchSize())
 				require.Equal(t, 2*time.Minute, gc.RemoverSleepInterval())
 
@@ -117,18 +124,23 @@ func TestEngineSection(t *testing.T) {
 				require.Equal(t, 200, meta.BoltDB().MaxBatchSize())
 				require.Equal(t, 20*time.Millisecond, meta.BoltDB().MaxBatchDelay())
 
-				require.Equal(t, "tmp/1/blob", blob.Path())
-				require.EqualValues(t, 0644, blob.Perm())
-				require.Equal(t, false, blob.Compress())
-				require.Equal(t, []string(nil), blob.UncompressableContentTypes())
-				require.EqualValues(t, 5, blob.ShallowDepth())
-				require.EqualValues(t, 102400, blob.SmallSizeLimit())
+				require.Equal(t, false, sc.Compress())
+				require.Equal(t, []string(nil), sc.UncompressableContentTypes())
+				require.EqualValues(t, 102400, sc.SmallSizeLimit())
 
+				require.Equal(t, 2, len(ss))
+
+				blz := blobovniczaconfig.From((*config.Config)(ss[0]))
+				require.Equal(t, "tmp/1/blob/blobovnicza", ss[0].Path())
 				require.EqualValues(t, 4194304, blz.Size())
 				require.EqualValues(t, 1, blz.ShallowDepth())
 				require.EqualValues(t, 4, blz.ShallowWidth())
 				require.EqualValues(t, 50, blz.OpenedCacheSize())
 
+				require.Equal(t, "tmp/1/blob", ss[1].Path())
+				require.EqualValues(t, 0644, ss[1].Perm())
+				require.EqualValues(t, 5, fstreeconfig.From((*config.Config)(ss[1])).Depth())
+
 				require.EqualValues(t, 200, gc.RemoverBatchSize())
 				require.Equal(t, 5*time.Minute, gc.RemoverSleepInterval())
 

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)
+}

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

@@ -16,11 +16,49 @@ import (
 // which provides access to Shard configurations.
 type Config config.Config
 
+// SmallSizeLimitDefault is a default limit of small objects payload in bytes.
+const SmallSizeLimitDefault = 1 << 20
+
 // From wraps config section into Config.
 func From(c *config.Config) *Config {
 	return (*Config)(c)
 }
 
+// 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
+}
+
 // BlobStor returns "blobstor" subsection as a blobstorconfig.Config.
 func (x *Config) BlobStor() *blobstorconfig.Config {
 	return blobstorconfig.From(