Add transaction benchmarks for badger

cmd/benchmarks/db/badger.go

@@ -11,6 +11,33 @@ type badgerTree struct {
 	db      *badger.DB
 }
 
+type badgerTransaction struct {
+	spaceId string
+	id      string
+	txn     *badger.Txn
+}
+
+func (b *badgerTransaction) AddChange(key string, value []byte) (err error) {
+	badgerKey := fmt.Sprintf("space/%s/tree/%s/change/%s", b.spaceId, b.id, key)
+	return b.txn.Set([]byte(badgerKey), value)
+}
+
+func (b *badgerTransaction) GetChange(key string) (val []byte, err error) {
+	badgerKey := fmt.Sprintf("space/%s/tree/%s/change/%s", b.spaceId, b.id, key)
+	it, err := b.txn.Get([]byte(badgerKey))
+	if err != nil {
+		return
+	}
+	return it.ValueCopy(val)
+}
+
+func (b *badgerTree) Perform(f func(txn Transaction) error) error {
+	return b.db.Update(func(txn *badger.Txn) error {
+		bTxn := &badgerTransaction{b.spaceId, b.id, txn}
+		return f(bTxn)
+	})
+}
+
 func (b *badgerTree) Id() string {
 	return b.id
 }

cmd/benchmarks/db/common.go

@@ -1,11 +1,17 @@
 package db
 
+type Transaction interface {
+	AddChange(key string, value []byte) (err error)
+	GetChange(key string) ([]byte, error)
+}
+
 type Tree interface {
 	Id() string
 	UpdateHead(head string) (err error)
 	AddChange(key string, value []byte) (err error)
 	GetChange(key string) ([]byte, error)
 	HasChange(key string) (has bool, err error)
+	Perform(func(txn Transaction) error) error
 }
 
 type Space interface {

cmd/benchmarks/db/pogreb.go

@@ -12,6 +12,10 @@ type pogrebTree struct {
 	db *pogreb.DB
 }
 
+func (p *pogrebTree) Perform(f func(txn Transaction) error) error {
+	return f(p)
+}
+
 func (p *pogrebTree) Id() string {
 	return p.id
 }

cmd/benchmarks/dbbench.go

@@ -17,9 +17,9 @@ func main() {
 		fmt.Println(http.ListenAndServe("localhost:6060", nil))
 	}()
 	opts := options{
-		numSpaces:         1000,
+		numSpaces:         10,
 		numEntriesInSpace: 100,
-		numChangesInTree:  10,
+		numChangesInTree:  1000,
 		numHeadUpdates:    100,
 		defValueSize:      1000,
 		lenHeadUpdate:     1000,
@@ -105,6 +105,15 @@ func bench(factory db.SpaceCreatorFactory, opts options) {
 				panic(err)
 			}
 		}
+		//t.Perform(func(txn db.Transaction) error {
+		//	for i := 0; i < opts.numChangesInTree; i++ {
+		//		err := t.AddChange(changeIdKey(i), byteSlice())
+		//		if err != nil {
+		//			panic(err)
+		//		}
+		//	}
+		//	return nil
+		//})
 		for i := 0; i < opts.numHeadUpdates; i++ {
 			err := t.UpdateHead(string(headUpdate()))
 			if err != nil {
@@ -116,6 +125,25 @@ func bench(factory db.SpaceCreatorFactory, opts options) {
 	fmt.Println(total, "changes creation, spent ms", time.Now().Sub(now).Milliseconds())
 	now = time.Now()
 
+	// getting some values from tree
+	for _, t := range trees {
+		err := t.Perform(func(txn db.Transaction) error {
+			for i := 0; i < opts.numChangesInTree; i++ {
+				_, err := t.GetChange(changeIdKey(i))
+				if err != nil {
+					return err
+				}
+			}
+			return nil
+		})
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	fmt.Println(total, "changes getting perform, spent ms", time.Now().Sub(now).Milliseconds())
+	now = time.Now()
+
 	// getting some values from tree
 	for _, t := range trees {
 		for i := 0; i < opts.numChangesInTree; i++ {