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[#170] oid, cid: Refactor and document package functionality

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Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
This commit is contained in:
Pavel Karpy 2022-04-11 19:25:14 +03:00 • committed by LeL
parent 24d6c2221f
commit f7172adf18
49 changed files with 831 additions and 439 deletions
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20
ns/nns.go
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@ -114,7 +114,7 @@ func (n *NNS) Dial(address string) error {
// ResolveContainerName MUST NOT be called before successful Dial.
//
// See also https://docs.neo.org/docs/en-us/reference/nns.html.
func (n *NNS) ResolveContainerName(name string) (*cid.ID, error) {
func (n *NNS) ResolveContainerName(name string) (cid.ID, error) {
res, err := n.neoClient.call(n.nnsContract, "resolve", []smartcontract.Parameter{
{
Type: smartcontract.StringType,
@ -126,25 +126,25 @@ func (n *NNS) ResolveContainerName(name string) (*cid.ID, error) {
},
})
if err != nil {
return nil, fmt.Errorf("invoke NNS contract: %w", err)
return cid.ID{}, fmt.Errorf("invoke NNS contract: %w", err)
}
if res.State != vm.HaltState.String() {
return nil, fmt.Errorf("NNS contract fault exception: %s", res.FaultException)
return cid.ID{}, fmt.Errorf("NNS contract fault exception: %s", res.FaultException)
} else if len(res.Stack) == 0 {
return nil, errors.New("empty stack in invocation result")
return cid.ID{}, errors.New("empty stack in invocation result")
}
itemArr, err := res.Stack[len(res.Stack)-1].Convert(stackitem.ArrayT) // top stack element is last in the array
if err != nil {
return nil, fmt.Errorf("convert stack item to %s", stackitem.ArrayT)
return cid.ID{}, fmt.Errorf("convert stack item to %s", stackitem.ArrayT)
}
if _, ok := itemArr.(stackitem.Null); !ok {
arr, ok := itemArr.Value().([]stackitem.Item)
if !ok {
// unexpected for types from stackitem package
return nil, errors.New("invalid cast to stack item slice")
return cid.ID{}, errors.New("invalid cast to stack item slice")
}
var id cid.ID
@ -152,15 +152,15 @@ func (n *NNS) ResolveContainerName(name string) (*cid.ID, error) {
for i := range arr {
bs, err := arr[i].TryBytes()
if err != nil {
return nil, fmt.Errorf("convert array item to byte slice: %w", err)
return cid.ID{}, fmt.Errorf("convert array item to byte slice: %w", err)
}
err = id.Parse(string(bs))
err = id.DecodeString(string(bs))
if err == nil {
return &id, nil
return id, nil
}
}
}
return nil, errNotFound
return cid.ID{}, errNotFound
}