chore: Update to badger v3, and use badger as default in memory store

cli/defradb/cmd/config.go

@@ -10,7 +10,7 @@
 package cmd
 
 import (
-	badgerds "github.com/ipfs/go-ds-badger"
+	badgerds "github.com/sourcenetwork/defradb/datastores/badger/v3"
 )
 
 type Config struct {

cli/defradb/cmd/start.go

@@ -16,8 +16,9 @@ import (
 
 	"github.com/sourcenetwork/defradb/db"
 
+	badger "github.com/dgraph-io/badger/v3"
 	ds "github.com/ipfs/go-datastore"
-	badgerds "github.com/ipfs/go-ds-badger"
+	badgerds "github.com/sourcenetwork/defradb/datastores/badger/v3"
 	"github.com/spf13/cobra"
 )
 
@@ -41,16 +42,18 @@ var startCmd = &cobra.Command{
 			log.Info("opening badger store: ", config.Database.Badger.Path)
 			rootstore, err = badgerds.NewDatastore(config.Database.Badger.Path, config.Database.Badger.Options)
 			options = config.Database.Badger
-			if err != nil {
-				log.Error("Failed to initiate database:", err)
-				os.Exit(1)
-			}
 		} else if config.Database.Store == "memory" {
 			log.Info("building new memory store")
-			rootstore = ds.NewMapDatastore()
+			opts := badgerds.Options{Options: badger.DefaultOptions("").WithInMemory(true)}
+			rootstore, err = badgerds.NewDatastore("", &opts)
 			options = config.Database.Memory
 		}
 
+		if err != nil {
+			log.Error("Failed to initiate datastore:", err)
+			os.Exit(1)
+		}
+
 		db, err := db.NewDB(rootstore, options)
 		if err != nil {
 			log.Error("Failed to initiate database:", err)

datastores/badger/v3/compat_logger.go

@@ -0,0 +1,22 @@
+// Code copy-pasted from https://github.com/ipfs/go-ds-badger2/blob/master/compat_logger.go
+
+package badger
+
+import "go.uber.org/zap"
+
+type compatLogger struct {
+	zap.SugaredLogger
+	skipLogger zap.SugaredLogger
+}
+
+// Warning is for compatibility
+// Deprecated: use Warn(args ...interface{}) instead
+func (logger *compatLogger) Warning(args ...interface{}) {
+	logger.skipLogger.Warn(args...)
+}
+
+// Warningf is for compatibility
+// Deprecated: use Warnf(format string, args ...interface{}) instead
+func (logger *compatLogger) Warningf(format string, args ...interface{}) {
+	logger.skipLogger.Warnf(format, args...)
+}