[#172] v2/acl: Add JSON converters for EACL and bearer token

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

go.mod

@@ -3,6 +3,7 @@ module github.com/nspcc-dev/neofs-api-go
 go 1.14
 
 require (
+	github.com/gogo/protobuf v1.1.1
 	github.com/golang/protobuf v1.4.2
 	github.com/google/uuid v1.1.1
 	github.com/mr-tron/base58 v1.1.2

go.sum

@@ -67,6 +67,7 @@ github.com/go-redis/redis v6.10.2+incompatible/go.mod h1:NAIEuMOZ/fxfXJIrKDQDz8w
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/go-yaml/yaml v2.1.0+incompatible h1:RYi2hDdss1u4YE7GwixGzWwVo47T8UQwnTLB6vQiq+o=
 github.com/go-yaml/yaml v2.1.0+incompatible/go.mod h1:w2MrLa16VYP0jy6N7M5kHaCkaLENm+P+Tv+MfurjSw0=
+github.com/gogo/protobuf v1.1.1 h1:72R+M5VuhED/KujmZVcIquuo8mBgX4oVda//DQb3PXo=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=

v2/acl/json.go

@@ -0,0 +1,96 @@
+package acl
+
+import (
+	"github.com/golang/protobuf/jsonpb"
+	acl "github.com/nspcc-dev/neofs-api-go/v2/acl/grpc"
+)
+
+func RecordToJSON(r *Record) []byte {
+	if r == nil {
+		return nil
+	}
+
+	msg := RecordToGRPCMessage(r)
+	m := jsonpb.Marshaler{}
+
+	s, err := m.MarshalToString(msg)
+	if err != nil {
+		return nil
+	}
+
+	return []byte(s)
+}
+
+func RecordFromJSON(data []byte) *Record {
+	if len(data) == 0 {
+		return nil
+	}
+
+	msg := new(acl.EACLRecord)
+
+	if err := jsonpb.UnmarshalString(string(data), msg); err != nil {
+		return nil
+	}
+
+	return RecordFromGRPCMessage(msg)
+}
+
+func TableToJSON(t *Table) (data []byte) {
+	if t == nil {
+		return nil
+	}
+
+	msg := TableToGRPCMessage(t)
+	m := jsonpb.Marshaler{}
+
+	s, err := m.MarshalToString(msg)
+	if err != nil {
+		return nil
+	}
+
+	return []byte(s)
+}
+
+func TableFromJSON(data []byte) *Table {
+	if len(data) == 0 {
+		return nil
+	}
+
+	msg := new(acl.EACLTable)
+
+	if jsonpb.UnmarshalString(string(data), msg) != nil {
+		return nil
+	}
+
+	return TableFromGRPCMessage(msg)
+}
+
+func BearerTokenToJSON(t *BearerToken) (data []byte) {
+	if t == nil {
+		return nil
+	}
+
+	msg := BearerTokenToGRPCMessage(t)
+	m := jsonpb.Marshaler{}
+
+	s, err := m.MarshalToString(msg)
+	if err != nil {
+		return nil
+	}
+
+	return []byte(s)
+}
+
+func BearerTokenFromJSON(data []byte) *BearerToken {
+	if len(data) == 0 {
+		return nil
+	}
+
+	msg := new(acl.BearerToken)
+
+	if jsonpb.UnmarshalString(string(data), msg) != nil {
+		return nil
+	}
+
+	return BearerTokenFromGRPCMessage(msg)
+}

v2/acl/json_test.go

@@ -0,0 +1,50 @@
+package acl_test
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/acl"
+	"github.com/stretchr/testify/require"
+)
+
+func TestRecordJSON(t *testing.T) {
+	exp := generateRecord(false)
+
+	t.Run("non empty", func(t *testing.T) {
+		data := acl.RecordToJSON(exp)
+		require.NotNil(t, data)
+
+		got := acl.RecordFromJSON(data)
+		require.NotNil(t, got)
+
+		require.Equal(t, exp, got)
+	})
+}
+
+func TestEACLTableJSON(t *testing.T) {
+	exp := generateEACL()
+
+	t.Run("non empty", func(t *testing.T) {
+		data := acl.TableToJSON(exp)
+		require.NotNil(t, data)
+
+		got := acl.TableFromJSON(data)
+		require.NotNil(t, got)
+
+		require.Equal(t, exp, got)
+	})
+}
+
+func TestBearerTokenJSON(t *testing.T) {
+	exp := generateBearerToken("token")
+
+	t.Run("non empty", func(t *testing.T) {
+		data := acl.BearerTokenToJSON(exp)
+		require.NotNil(t, data)
+
+		got := acl.BearerTokenFromJSON(data)
+		require.NotNil(t, got)
+
+		require.Equal(t, exp, got)
+	})
+}