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core: add GetTransactionVMState to native Ledger contract

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Close #2343.
This commit is contained in:
Anna Shaleva 2022-04-04 13:22:20 +03:00
parent 4254407a9b
commit b431e47d2a
3 changed files with 68 additions and 2 deletions
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19
pkg/core/native/ledger.go
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@ -14,6 +14,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
@ -62,6 +63,11 @@ func newLedger() *Ledger {
md = newMethodAndPrice(l.getTransactionFromBlock, 1<<16, callflag.ReadStates)
l.AddMethod(md, desc)
desc = newDescriptor("getTransactionVMState", smartcontract.IntegerType,
manifest.NewParameter("hash", smartcontract.Hash256Type))
md = newMethodAndPrice(l.getTransactionVMState, 1<<15, callflag.ReadStates)
l.AddMethod(md, desc)
return l
}
@ -142,6 +148,19 @@ func (l *Ledger) getTransactionFromBlock(ic *interop.Context, params []stackitem
return TransactionToStackItem(block.Transactions[index])
}
// getTransactionVMState returns VM state got after transaction invocation.
func (l *Ledger) getTransactionVMState(ic *interop.Context, params []stackitem.Item) stackitem.Item {
hash, err := getUint256FromItem(params[0])
if err != nil {
panic(err)
}
h, _, aer, err := ic.DAO.GetTxExecResult(hash)
if err != nil || !isTraceableBlock(ic.Chain, h) {
return stackitem.Make(vm.NoneState)
}
return stackitem.Make(aer.VMState)
}
// isTraceableBlock defines whether we're able to give information about
// the block with index specified.
func isTraceableBlock(bc interop.Ledger, index uint32) bool {