frostfs-node/pkg/morph/client/container/get.go
Leonard Lyubich cf40e19985 [#505] morph/container: Change parsing of Get contract method's result
`Get` method of `Container` contract returns structure with 4 fields
(container is the 1st one).

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2021-05-25 18:58:25 +03:00

63 lines
1.5 KiB
Go

package container
import (
"fmt"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
)
// GetArgs groups the arguments
// of get container test invoke call.
type GetArgs struct {
cid []byte // container identifier
}
// GetValues groups the stack parameters
// returned by get container test invoke.
type GetValues struct {
cnr []byte // container in a binary form
}
// SetCID sets the container identifier
// in a binary format.
func (g *GetArgs) SetCID(v []byte) {
g.cid = v
}
// Container returns the container
// in a binary format.
func (g *GetValues) Container() []byte {
return g.cnr
}
// Get performs the test invoke of get container
// method of NeoFS Container contract.
func (c *Client) Get(args GetArgs) (*GetValues, error) {
prms, err := c.client.TestInvoke(
c.getMethod,
args.cid,
)
if err != nil {
return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.getMethod, err)
} else if ln := len(prms); ln != 1 {
return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.getMethod, ln)
}
arr, err := client.ArrayFromStackItem(prms[0])
if err != nil {
return nil, fmt.Errorf("could not get item array of container (%s): %w", c.getMethod, err)
}
if len(arr) != 4 {
return nil, fmt.Errorf("unexpected container stack item count (%s): %d", c.getMethod, len(arr))
}
cnrBytes, err := client.BytesFromStackItem(arr[0])
if err != nil {
return nil, fmt.Errorf("could not get byte array of container (%s): %w", c.getMethod, err)
}
return &GetValues{
cnr: cnrBytes,
}, nil
}