Initial commit

Initial public review release v0.10.0

lib/buckets/inmemory/bucket.go

@@ -0,0 +1,60 @@
+package inmemory
+
+import (
+	"sync"
+
+	"github.com/mr-tron/base58"
+	"github.com/nspcc-dev/neofs-node/lib/core"
+	"github.com/spf13/viper"
+)
+
+type (
+	bucket struct {
+		*sync.RWMutex
+		items map[string][]byte
+	}
+)
+
+const (
+	defaultCapacity = 100
+)
+
+var (
+	_ core.Bucket = (*bucket)(nil)
+
+	// for in usage
+	_ = NewBucket
+)
+
+func stringifyKey(key []byte) string {
+	return base58.Encode(key)
+}
+
+func decodeKey(key string) []byte {
+	k, err := base58.Decode(key)
+	if err != nil {
+		panic(err) // it can fail only for not base58 strings
+	}
+
+	return k
+}
+
+func makeCopy(val []byte) []byte {
+	tmp := make([]byte, len(val))
+	copy(tmp, val)
+
+	return tmp
+}
+
+// NewBucket creates new in-memory bucket instance.
+func NewBucket(name core.BucketType, v *viper.Viper) core.Bucket {
+	var capacity int
+	if capacity = v.GetInt("storage." + string(name) + ".capacity"); capacity <= 0 {
+		capacity = defaultCapacity
+	}
+
+	return &bucket{
+		RWMutex: new(sync.RWMutex),
+		items:   make(map[string][]byte, capacity),
+	}
+}