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[#XX] Use contract resolver from sdk

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Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>
This commit is contained in:
Denis Kirillov 2023-10-12 18:04:22 +03:00
parent e3b6f534cc
commit eccc3f8077
2 changed files with 22 additions and 74 deletions
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62
resolver/nns.go
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@ -1,62 +0,0 @@
package resolver
import (
"errors"
"fmt"
"git.frostfs.info/TrueCloudLab/frostfs-contract/nns"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/rpcclient"
"github.com/nspcc-dev/neo-go/pkg/rpcclient/invoker"
"github.com/nspcc-dev/neo-go/pkg/rpcclient/unwrap"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
// ResolveHash resolves contract hash.
func ResolveHash(cli *rpcclient.Client, domain string) (util.Uint160, error) {
nnsCs, err := cli.GetContractStateByID(1)
if err != nil {
return util.Uint160{}, fmt.Errorf("get NNS contract by id: %w", err)
}
item, err := nnsResolve(invoker.New(cli, nil), nnsCs.Hash, domain)
if err != nil {
return util.Uint160{}, err
}
return parseNNSResolveResult(item)
}
func nnsResolve(inv *invoker.Invoker, nnsHash util.Uint160, domain string) (stackitem.Item, error) {
return unwrap.Item(inv.Call(nnsHash, "resolve", domain, int64(nns.TXT)))
}
// parseNNSResolveResult parses the result of resolving NNS record.
// It works with multiple formats (corresponding to multiple NNS versions).
// If array of hashes is provided, it returns only the first one.
func parseNNSResolveResult(res stackitem.Item) (util.Uint160, error) {
arr, ok := res.Value().([]stackitem.Item)
if !ok {
arr = []stackitem.Item{res}
}
if _, ok := res.Value().(stackitem.Null); ok || len(arr) == 0 {
return util.Uint160{}, errors.New("NNS record is missing")
}
for i := range arr {
bs, err := arr[i].TryBytes()
if err != nil {
continue
}
h, err := address.StringToUint160(string(bs))
if err == nil {
return h, nil
}
h, err = util.Uint160DecodeStringLE(string(bs))
if err == nil {
return h, nil
}
}
return util.Uint160{}, errors.New("no valid hashes are found")
}