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我正在使用web3j和测试以太坊智能合约Geth。Geth 正在运行这样的脚本：

PASSFILE=/var/folders/_l/kl9pdj2x50v7416j8htb6w740000gn/T/pwd6597172766860806720.tmp
DATADIR=/var/folders/_l/kl9pdj2x50v7416j8htb6w740000gn/T/geth808290308908087582
IPCPATH=/var/folders/_l/kl9pdj2x50v7416j8htb6w740000gn/T/geth808290308908087582/geth.ipc

geth --datadir $DATADIR account new --password $PASSFILE
geth --datadir $DATADIR \
    --ipcpath $IPCPATH \
    --dev \
    --rpc \
    --mine \
    --networkid 1999

（路径在测试中生成）。

智能合约包装器使用web3j-maven-plugin.

问题是每次send()调用都需要几秒钟：

private TransactionReceipt deployFeature_() throws Exception {
    logger.info("Deploying feature ...");
    return contract.deployFeature(featureKey).send();
}

日志（您可以看到 1 个事务耗时 16 秒）：

166955 [main] INFO FeatureTest - Deploying feature ...
182006 [main] INFO FeatureTest - Checking feature is listed ...

Web3j 通过 IPC 连接：

web3 = Web3j.build(new UnixIpcService(ipcPath));

如何加快调用速度？如果TestRPC每次调用的测试都需要不到一秒钟的时间！因为一Geth开始--dev它会自己生成创世文件，所以我不能改变难度。我还可以看到块的开采速度非常快：

INFO [11-09|00:34:39] Commit new mining work                   number=9 txs=0 uncles=0 elapsed=2.000s
INFO [11-09|00:34:39] Successfully sealed new block            number=9 hash=b869ca…870644
INFO [11-09|00:34:39]  block reached canonical chain          number=4 hash=c758a0…a529af
INFO [11-09|00:34:39]  mined potential block                  number=9 hash=b869ca…870644
INFO [11-09|00:34:39] Commit new mining work                   number=10 txs=0 uncles=0 elapsed=84.12µs
INFO [11-09|00:34:40] Successfully sealed new block            number=10 hash=5e81a9…fc1364
INFO [11-09|00:34:40]  block reached canonical chain          number=5  hash=465c2b…78461a
INFO [11-09|00:34:40]  mined potential block                  number=10 hash=5e81a9…fc1364

由于某种原因，调用并不快。我能做些什么？

4

2 回答 2

3

这是web3j功能/问题，您可以更改此行为： https ://github.com/web3j/web3j/issues/231

于 2017-11-09T11:58:34.773 回答
1

以下是如何更改合约中的 TransactionManager 的示例：

// Using RawTransactionManager
TransactionManager transactionManager = new org.web3j.tx.RawTransactionManager(web3j, <credentials>, 40, 500);

// Or using ClientTransactionManager
TransactionManager transactionManager = new org.web3j.tx.ClientTransactionManager(web3j, "0x<fromAddress>", 40, 500);

// Now we'll poll every 500 ms for a transaction response
YourContract contract = YourContract.deploy("0x<contracAddress>", web3j,
        transactionManager, ManagedTransaction.GAS_PRICE, Contract.GAS_LIMIT,
        <initialValue>, <constructorParam1>,...);

我从这里得到了这个例子。

于 2020-10-20T16:02:27.277 回答