90 lines
3 KiB
Go
90 lines
3 KiB
Go
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package notary_test
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import (
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"context"
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"math/big"
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"time"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/actor"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/gas"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/notary"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/policy"
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"github.com/nspcc-dev/neo-go/pkg/vm/vmstate"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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)
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func ExampleActor() {
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// No error checking done at all, intentionally.
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w, _ := wallet.NewWalletFromFile("somewhere")
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defer w.Close()
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// We assume there are two accounts in the wallet --- one is a simple signature
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// account and another one is committee account. The first one will send notary
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// requests, while committee signatures need to be collected.
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// Create an RPC client.
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c, _ := rpcclient.New(context.Background(), "url", rpcclient.Options{})
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// An actor for the first account.
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single, _ := actor.NewSimple(c, w.Accounts[0])
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// Transfer some GAS to the Notary contract to be able to send notary requests
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// from the first account.
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gasSingle := gas.New(single)
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txid, vub, _ := gasSingle.Transfer(single.Sender(), notary.Hash, big.NewInt(10_0000_0000), notary.OnNEP17PaymentData{Till: 10000000})
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var depositOK bool
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// Wait for transaction to be persisted, either it gets in and we get
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// an application log with some result or it expires.
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for height, err := c.GetBlockCount(); err == nil && height <= vub; height, err = c.GetBlockCount() {
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appLog, err := c.GetApplicationLog(txid, nil)
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// We can't separate "application log missing" from other errors at the moment, see #2248.
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if err != nil {
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time.Sleep(5 * time.Second)
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continue
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}
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if len(appLog.Executions) == 1 && appLog.Executions[0].VMState == vmstate.Halt {
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depositOK = true
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} else {
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break
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}
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}
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if !depositOK {
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panic("deposit failed")
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}
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var opts notary.ActorOptions
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// Add high priority attribute, we gonna be making committee-signed transactions anyway.
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opts.MainAttributes = []transaction.Attribute{{Type: transaction.HighPriority}}
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// Create an Actor with the simple account used for paying fees and committee
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// signature to be collected.
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multi, _ := notary.NewTunedActor(c, []actor.SignerAccount{{
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// Sender, regular account with None scope.
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Signer: transaction.Signer{
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Account: w.Accounts[0].ScriptHash(),
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Scopes: transaction.None,
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},
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Account: w.Accounts[0],
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}, {
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// Commmitee.
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Signer: transaction.Signer{
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Account: w.Accounts[1].ScriptHash(),
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Scopes: transaction.CalledByEntry,
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},
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Account: w.Accounts[1],
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}}, opts)
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// Use the Policy contract to perform something requiring committee signature.
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policyContract := policy.New(multi)
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// Wrap a transaction to set storage price into a notary request. Fallback will
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// be create automatically and all appropriate attributes will be added to both
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// transactions.
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mainTx, fbTx, vub, _ := multi.Notarize(policyContract.SetStoragePriceTransaction(10))
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_ = mainTx
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_ = fbTx
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_ = vub
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}
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