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transaction.go
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transaction.go
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// Copyright © 2019 Weald Technology Trading
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"context"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/spf13/viper"
)
// WaitForTransaction waits for the transaction to be mined, or for the limit to expire.
func WaitForTransaction(client *ethclient.Client, txHash common.Hash, limit time.Duration) bool {
start := time.Now()
first := true
for limit == 0 || time.Since(start) < limit {
if !first {
time.Sleep(5 * time.Second)
} else {
first = false
}
ctx, cancel := context.WithTimeout(context.Background(), viper.GetDuration("timeout"))
defer cancel()
_, pending, err := client.TransactionByHash(ctx, txHash)
if err == nil && !pending {
return true
}
}
return false
}