81 lines
2.3 KiB
Go
81 lines
2.3 KiB
Go
// Copyright 2020 dfuse Platform Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package rpc
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import (
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"bytes"
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"context"
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"encoding/base64"
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"fmt"
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bin "github.com/dfuse-io/binary"
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"github.com/gagliardetto/solana-go"
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)
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type SimulateTransactionResponse struct {
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Err interface{} `json:"err,omitempty"`
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Logs []string `json:"logs,omitempty"`
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}
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// SimulateTransaction simulates sending a transaction.
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func (cl *Client) SimulateTransaction(
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ctx context.Context,
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transaction *solana.Transaction,
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) (out *SimulateTransactionResponse, err error) {
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return cl.SimulateTransactionWithOpts(
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ctx,
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transaction,
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false,
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"",
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false,
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)
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}
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// SimulateTransaction simulates sending a transaction.
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func (cl *Client) SimulateTransactionWithOpts(
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ctx context.Context,
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transaction *solana.Transaction,
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sigVerify bool, // if true the transaction signatures will be verified (default: false, conflicts with replaceRecentBlockhash)
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commitment CommitmentType, // Commitment level to simulate the transaction at (default: "finalized").
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replaceRecentBlockhash bool, // if true the transaction recent blockhash will be replaced with the most recent blockhash. (default: false, conflicts with sigVerify)
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) (out *SimulateTransactionResponse, err error) {
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buf := new(bytes.Buffer)
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if err := bin.NewEncoder(buf).Encode(transaction); err != nil {
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return nil, fmt.Errorf("send transaction: encode transaction: %w", err)
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}
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trxData := buf.Bytes()
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obj := M{
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"encoding": "base64",
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}
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if sigVerify {
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obj["sigVerify"] = sigVerify
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}
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if commitment != "" {
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obj["commitment"] = commitment
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}
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if replaceRecentBlockhash {
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obj["replaceRecentBlockhash"] = replaceRecentBlockhash
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}
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b64Data := base64.StdEncoding.EncodeToString(trxData)
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params := []interface{}{
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b64Data,
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obj,
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}
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err = cl.rpcClient.CallFor(&out, "simulateTransaction", params)
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return
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}
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