forked from TrueCloudLab/frostfs-api-go
f5388b553e
- implement Stringer interface and Parse method for container.ID - increase test coverage closes #147 Signed-off-by: Evgeniy Kulikov <kim@nspcc.ru>
67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
package container
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import (
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"bytes"
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"crypto/sha256"
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"github.com/mr-tron/base58"
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"github.com/nspcc-dev/neofs-api-go/internal"
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"github.com/nspcc-dev/neofs-api-go/v2/refs"
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"github.com/pkg/errors"
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)
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// ID represents v2-compatible container identifier.
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type ID refs.ContainerID
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// ErrBadID should be returned when bytes slice isn't Container.ID size (sha256.Size).
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// Notice: if byte slice changed, please, replace error message.
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const ErrBadID = internal.Error("object.ID should be 32 bytes length")
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// NewIDFromV2 wraps v2 ContainerID message to ID.
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func NewIDFromV2(idV2 *refs.ContainerID) *ID {
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return (*ID)(idV2)
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}
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// NewID creates and initializes blank ID.
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//
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// Works similar to NewIDFromV2(new(ContainerID)).
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func NewID() *ID {
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return NewIDFromV2(new(refs.ContainerID))
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}
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// SetSHA256 sets container identifier value to SHA256 checksum.
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func (id *ID) SetSHA256(v [sha256.Size]byte) {
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(*refs.ContainerID)(id).SetValue(v[:])
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}
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// ToV2 returns the v2 container ID message.
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func (id *ID) ToV2() *refs.ContainerID {
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return (*refs.ContainerID)(id)
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}
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// Equal returns true if identifiers are identical.
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func (id *ID) Equal(id2 *ID) bool {
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return bytes.Equal(
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(*refs.ContainerID)(id).GetValue(),
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(*refs.ContainerID)(id2).GetValue(),
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)
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}
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// Parse converts base58 string representation into ID.
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func (id *ID) Parse(s string) error {
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data, err := base58.Decode(s)
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if err != nil {
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return errors.Wrap(err, "could not parse container.ID from string")
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} else if len(data) != sha256.Size {
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return ErrBadID
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}
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(*refs.ContainerID)(id).SetValue(data)
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return nil
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}
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// String returns base58 string representation of ID.
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func (id *ID) String() string {
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return base58.Encode((*refs.ContainerID)(id).GetValue())
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}
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