diff --git a/pkg/container/id.go b/pkg/container/id.go index 795f644..2649def 100644 --- a/pkg/container/id.go +++ b/pkg/container/id.go @@ -4,12 +4,19 @@ import ( "bytes" "crypto/sha256" + "github.com/mr-tron/base58" + "github.com/nspcc-dev/neofs-api-go/internal" "github.com/nspcc-dev/neofs-api-go/v2/refs" + "github.com/pkg/errors" ) // ID represents v2-compatible container identifier. type ID refs.ContainerID +// ErrBadID should be returned when bytes slice isn't Container.ID size (sha256.Size). +// Notice: if byte slice changed, please, replace error message. +const ErrBadID = internal.Error("object.ID should be 32 bytes length") + // NewIDFromV2 wraps v2 ContainerID message to ID. func NewIDFromV2(idV2 *refs.ContainerID) *ID { return (*ID)(idV2) @@ -39,3 +46,22 @@ func (id *ID) Equal(id2 *ID) bool { (*refs.ContainerID)(id2).GetValue(), ) } + +// Parse converts base58 string representation into ID. +func (id *ID) Parse(s string) error { + data, err := base58.Decode(s) + if err != nil { + return errors.Wrap(err, "could not parse container.ID from string") + } else if len(data) != sha256.Size { + return ErrBadID + } + + (*refs.ContainerID)(id).SetValue(data) + + return nil +} + +// String returns base58 string representation of ID. +func (id *ID) String() string { + return base58.Encode((*refs.ContainerID)(id).GetValue()) +} diff --git a/pkg/container/id_test.go b/pkg/container/id_test.go index 3603771..3942a70 100644 --- a/pkg/container/id_test.go +++ b/pkg/container/id_test.go @@ -3,8 +3,10 @@ package container import ( "crypto/rand" "crypto/sha256" + "strconv" "testing" + "github.com/mr-tron/base58" "github.com/stretchr/testify/require" ) @@ -45,3 +47,46 @@ func TestID_Equal(t *testing.T) { require.True(t, id1.Equal(id2)) require.False(t, id1.Equal(id3)) } + +func TestID_Parse(t *testing.T) { + t.Run("should parse successful", func(t *testing.T) { + for i := 0; i < 10; i++ { + t.Run(strconv.Itoa(i), func(t *testing.T) { + cs := randSHA256Checksum(t) + str := base58.Encode(cs[:]) + cid := NewID() + + require.NoError(t, cid.Parse(str)) + require.Equal(t, cs[:], cid.ToV2().GetValue()) + }) + } + }) + + t.Run("should failure on parse", func(t *testing.T) { + for i := 0; i < 10; i++ { + j := i + t.Run(strconv.Itoa(j), func(t *testing.T) { + cs := []byte{1, 2, 3, 4, 5, byte(j)} + str := base58.Encode(cs) + cid := NewID() + + require.EqualError(t, cid.Parse(str), ErrBadID.Error()) + }) + } + }) +} + +func TestID_String(t *testing.T) { + t.Run("should be equal", func(t *testing.T) { + for i := 0; i < 10; i++ { + t.Run(strconv.Itoa(i), func(t *testing.T) { + cs := randSHA256Checksum(t) + str := base58.Encode(cs[:]) + cid := NewID() + + require.NoError(t, cid.Parse(str)) + require.Equal(t, str, cid.String()) + }) + } + }) +}