add subcommand for key generation

cmd/keygen.go

@@ -0,0 +1,28 @@
+// Copyright 2021 Molecula Corp. All rights reserved.
+package cmd
+
+import (
+	"context"
+	"io"
+
+	"github.com/molecula/featurebase/v2/ctl"
+	"github.com/spf13/cobra"
+)
+
+func newKeygenCommand(stdin io.Reader, stdout io.Writer, stderr io.Writer) *cobra.Command {
+	cmd := ctl.NewKeygenCommand(stdin, stdout, stderr)
+	ccmd := &cobra.Command{
+		Use:   "keygen",
+		Short: "Generate keys for authentication.",
+		Long: `
+Generate hash and block keys to configure FeatureBase for Authentication.
+`,
+		RunE: func(c *cobra.Command, args []string) error {
+			return cmd.Run(context.Background())
+		},
+	}
+
+	flags := ccmd.Flags()
+	flags.IntVarP(&cmd.KeyLength, "length", "l", 32, "length of keys to produce")
+	return ccmd
+}

cmd/root.go

@@ -6,7 +6,7 @@ import (
 	"io"
 	"strings"
 
-	"github.com/molecula/featurebase/v2"
+	pilosa "github.com/molecula/featurebase/v2"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
@@ -62,6 +62,8 @@ at https://docs.molecula.cloud/.
 	rc.AddCommand(newRBFCommand(stdin, stdout, stderr))
 	rc.AddCommand(newServeCmd(stdin, stdout, stderr))
 	rc.AddCommand(newHolderCmd(stdin, stdout, stderr))
+	rc.AddCommand(newHolderCmd(stdin, stdout, stderr))
+	rc.AddCommand(newKeygenCommand(stdin, stdout, stderr))
 
 	rc.SetOutput(stderr)
 	return rc

ctl/keygen.go

@@ -0,0 +1,31 @@
+// Copyright 2021 Molecula Corp. All rights reserved.
+package ctl
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"github.com/gorilla/securecookie"
+	pilosa "github.com/molecula/featurebase/v2"
+)
+
+// Keygen represents a command for generating crytographic keys.
+type KeygenCommand struct {
+	CmdIO     *pilosa.CmdIO
+	KeyLength int
+}
+
+// NewKeygen returns a new instance of Keygen.
+func NewKeygenCommand(stdin io.Reader, stdout, stderr io.Writer) *KeygenCommand {
+	return &KeygenCommand{
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
+	}
+}
+
+// Run keys to use for authentication .
+func (kg *KeygenCommand) Run(_ context.Context) error {
+	fmt.Printf("hash-key = \"%+x\"\n", securecookie.GenerateRandomKey(kg.KeyLength))
+	fmt.Printf("block-key = \"%+x\"\n", securecookie.GenerateRandomKey(kg.KeyLength))
+	return nil
+}