[#1764] neofs-node: Validate config before usage

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

CHANGELOG.md

@@ -6,6 +6,7 @@ Changelog for NeoFS Node
 ### Added
 
 - Changelog updates CI step (#1808)
+- Validate storage node configuration before node startup (#1805)
 
 ### Changed
 

cmd/neofs-node/config.go

@@ -240,13 +240,7 @@ type cfgReputation struct {
 
 var persistateSideChainLastBlockKey = []byte("side_chain_last_processed_block")
 
-func initCfg(path string) *cfg {
-	var p config.Prm
-
-	appCfg := config.New(p,
-		config.WithConfigFile(path),
-	)
-
+func initCfg(appCfg *config.Config) *cfg {
 	key := nodeconfig.Key(appCfg)
 
 	var logPrm logger.Prm

cmd/neofs-node/main.go

@@ -9,6 +9,7 @@ import (
 	"os/signal"
 	"syscall"
 
+	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
 	"github.com/nspcc-dev/neofs-node/misc"
 	"github.com/nspcc-dev/neofs-node/pkg/services/control"
 	"go.uber.org/zap"
@@ -44,7 +45,12 @@ func main() {
 		os.Exit(SuccessReturnCode)
 	}
 
-	c := initCfg(*configFile)
+	appCfg := config.New(config.Prm{}, config.WithConfigFile(*configFile))
+
+	err := validateConfig(appCfg)
+	fatalOnErr(err)
+
+	c := initCfg(appCfg)
 
 	initApp(c)
 

cmd/neofs-node/validate.go

@@ -0,0 +1,91 @@
+package main
+
+import (
+	"fmt"
+	"path/filepath"
+
+	"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"
+	treeconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/tree"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/blobovniczatree"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/fstree"
+)
+
+// validateConfig validates storage node configuration.
+func validateConfig(c *config.Config) error {
+	shardNum := 0
+	paths := make(map[string]pathDescription)
+	return engineconfig.IterateShards(c, false, func(sc *shardconfig.Config) error {
+		if sc.WriteCache().Enabled() {
+			err := addPath(paths, "writecache", shardNum, sc.WriteCache().Path())
+			if err != nil {
+				return err
+			}
+		}
+
+		if err := addPath(paths, "metabase", shardNum, sc.Metabase().Path()); err != nil {
+			return err
+		}
+
+		treeConfig := treeconfig.Tree(c)
+		if treeConfig.Enabled() {
+			err := addPath(paths, "pilorama", shardNum, sc.Pilorama().Path())
+			if err != nil {
+				return err
+			}
+		}
+
+		blobstor := sc.BlobStor().Storages()
+		if len(blobstor) != 2 {
+			// TODO (@fyrcik): remove after #1522
+			return fmt.Errorf("blobstor section must have 2 components, got: %d", len(blobstor))
+		}
+		for i := range blobstor {
+			switch blobstor[i].Type() {
+			case fstree.Type, blobovniczatree.Type:
+			default:
+				// FIXME #1764 (@fyrchik): this line is currently unreachable,
+				//   because we panic in `sc.BlobStor().Storages()`.
+				return fmt.Errorf("unexpected storage type: %s (shard %d)",
+					blobstor[i].Type(), shardNum)
+			}
+			if blobstor[i].Perm()&0600 != 0600 {
+				return fmt.Errorf("invalid permissions for blobstor component: %s, "+
+					"expected at least rw- for the owner (shard %d)",
+					blobstor[i].Perm(), shardNum)
+			}
+			if blobstor[i].Path() == "" {
+				return fmt.Errorf("blobstor component path is empty (shard %d)", shardNum)
+			}
+			err := addPath(paths, fmt.Sprintf("blobstor[%d]", i), shardNum, blobstor[i].Path())
+			if err != nil {
+				return err
+			}
+		}
+
+		shardNum++
+		return nil
+	})
+}
+
+type pathDescription struct {
+	shard     int
+	component string
+}
+
+func addPath(paths map[string]pathDescription, component string, shard int, path string) error {
+	if path == "" {
+		return fmt.Errorf("%s at shard %d has empty path", component, shard)
+	}
+
+	path = filepath.Clean(path)
+	c, ok := paths[path]
+	if ok {
+		return fmt.Errorf("%s at shard %d and %s at shard %d have the same paths: %s",
+			c.component, c.shard, component, shard, path)
+	}
+
+	paths[path] = pathDescription{shard: shard, component: component}
+	return nil
+}

cmd/neofs-node/validate_test.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"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/stretchr/testify/require"
+)
+
+func TestValidate(t *testing.T) {
+	const exampleConfigPrefix = "../../config/"
+	t.Run("examples", func(t *testing.T) {
+		p := filepath.Join(exampleConfigPrefix, "example/node")
+		configtest.ForEachFileType(p, func(c *config.Config) {
+			var err error
+			require.NotPanics(t, func() {
+				err = validateConfig(c)
+			})
+			require.NoError(t, err)
+		})
+	})
+
+	t.Run("mainnet", func(t *testing.T) {
+		os.Clearenv() // ENVs have priority over config files, so we do this in tests
+		p := filepath.Join(exampleConfigPrefix, "mainnet/config.yml")
+		c := config.New(config.Prm{}, config.WithConfigFile(p))
+		require.NoError(t, validateConfig(c))
+	})
+	t.Run("testnet", func(t *testing.T) {
+		os.Clearenv() // ENVs have priority over config files, so we do this in tests
+		p := filepath.Join(exampleConfigPrefix, "testnet/config.yml")
+		c := config.New(config.Prm{}, config.WithConfigFile(p))
+		require.NoError(t, validateConfig(c))
+	})
+}

config/mainnet/config.yml

@@ -21,15 +21,19 @@ storage:
   shard:
     0:
       metabase:
-        path: <storage-path>/metabase
+        path: /storage/path/metabase
         perm: 0600
       blobstor:
-        path: <storage-path>/blobstor
+        - path: /storage/path/blobovnicza
+          type: blobovnicza
           perm: 0600
-        blobovnicza:
           opened_cache_capacity: 32
           depth: 1
           width: 1
+        - path: /storage/path/fstree
+          type: fstree
+          perm: 0600
+          depth: 4
       writecache:
         enabled: false
       gc:

config/testnet/config.yml

@@ -36,12 +36,16 @@ storage:
         path: /storage/metabase
         perm: 0777
       blobstor:
-        path: /storage/blobstor
-        perm: 0777
-        blobovnicza:
+        - path: /storage/path/blobovnicza
+          type: blobovnicza
+          perm: 0600
           opened_cache_capacity: 32
           depth: 1
           width: 1
+        - path: /storage/path/fstree
+          type: fstree
+          perm: 0600
+          depth: 4
       writecache:
         enabled: false
       gc: