sui预估交易

[klren0312]

代码

const txb = new Transaction()
txb.moveCall({
  target: `${packageId}::gdNft::add_count`,
  arguments: [
    txb.object(recordObj.data.objectId),
    txb.pure.u64(originNum + num),
    txb.pure.string('当前功德：' + (originNum + num))
  ]
})
// 序列化交易前，需要指定sender
txb.setSender(account.address)
// 序列化交易
const serializedTx = await txb.build({
  client: client,
})
// 获取预交易结果
const dryRunResult = await client.dryRunTransactionBlock({
  transactionBlock: serializedTx
})
// 计算交易的gas
const {computationCost, storageCost, storageRebate} = dryRunResult.effects.gasUsed
const totalGas = BigInt(computationCost) + BigInt(storageCost) - BigInt(storageRebate)
console.log(totalGas.toString())

结果

{
    "effects": {
        "messageVersion": "v1",
        "status": {
            "status": "success"
        },
        "executedEpoch": "565",
        "gasUsed": {
            "computationCost": "1000000",
            "storageCost": "3845600",
            "storageRebate": "3807144",
            "nonRefundableStorageFee": "38456"
        },
        "modifiedAtVersions": [
            {
                "objectId": "0x076a77585915d5d7c17dc172e597b46d26a4852e056bf66a5025100cf0ff6a59",
                "sequenceNumber": "252796841"
            },
            {
                "objectId": "0x38bd1c22f812201b354a5d675b166e9791832a8544dd7ae4147a65fece0247e8",
                "sequenceNumber": "246710197"
            }
        ],
        "transactionDigest": "3L1FoThGfCpiqNqBnKvaHuEKLxiPMsRf5f3GSfcQeBiR",
        "mutated": [
            {
                "owner": {
                    "AddressOwner": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989"
                },
                "reference": {
                    "objectId": "0x076a77585915d5d7c17dc172e597b46d26a4852e056bf66a5025100cf0ff6a59",
                    "version": 252796842,
                    "digest": "8bm5fTnSv6ejje4viY8GMNksPLpRTodvptXCfTtD2Ajz"
                }
            },
            {
                "owner": {
                    "AddressOwner": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989"
                },
                "reference": {
                    "objectId": "0x38bd1c22f812201b354a5d675b166e9791832a8544dd7ae4147a65fece0247e8",
                    "version": 252796842,
                    "digest": "GRonkMyJdfw3XQ3JFNaFUYAzyL54i2TpPLnrvCpqT63s"
                }
            }
        ],
        "gasObject": {
            "owner": {
                "AddressOwner": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989"
            },
            "reference": {
                "objectId": "0x076a77585915d5d7c17dc172e597b46d26a4852e056bf66a5025100cf0ff6a59",
                "version": 252796842,
                "digest": "8bm5fTnSv6ejje4viY8GMNksPLpRTodvptXCfTtD2Ajz"
            }
        },
        "dependencies": [
            "4Syfa81ob1WXf69hApbhE4JAAUCHNq4UwXDZvYw9S9ra",
            "C7Uc96SatJDw6dz8a3TQP7hqr6eYWEXdc2dcYtbPSDUK",
            "EDBYJXfBDfyFiHMbLXhXtDzWtZdhHeHYjSv1bhBCmK89"
        ]
    },
    "events": [],
    "objectChanges": [
        {
            "type": "mutated",
            "sender": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989",
            "owner": {
                "AddressOwner": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989"
            },
            "objectType": "0x2::coin::Coin<0x2::sui::SUI>",
            "objectId": "0x076a77585915d5d7c17dc172e597b46d26a4852e056bf66a5025100cf0ff6a59",
            "version": "252796842",
            "previousVersion": "252796841",
            "digest": "8bm5fTnSv6ejje4viY8GMNksPLpRTodvptXCfTtD2Ajz"
        },
        {
            "type": "mutated",
            "sender": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989",
            "owner": {
                "AddressOwner": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989"
            },
            "objectType": "0x544f19419ede80e69bf24f297effefcf3549710ffeee4b3a07aae34fa42588ba::gdNft::Gd",
            "objectId": "0x38bd1c22f812201b354a5d675b166e9791832a8544dd7ae4147a65fece0247e8",
            "version": "252796842",
            "previousVersion": "246710197",
            "digest": "GRonkMyJdfw3XQ3JFNaFUYAzyL54i2TpPLnrvCpqT63s"
        }
    ],
    "balanceChanges": [
        {
            "owner": {
                "AddressOwner": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989"
            },
            "coinType": "0x2::sui::SUI",
            "amount": "-1038456"
        }
    ],
    "input": {
        "messageVersion": "v1",
        "transaction": {
            "kind": "ProgrammableTransaction",
            "inputs": [
                {
                    "type": "object",
                    "objectType": "immOrOwnedObject",
                    "objectId": "0x38bd1c22f812201b354a5d675b166e9791832a8544dd7ae4147a65fece0247e8",
                    "version": "246710197",
                    "digest": "CWjRsk5DSVBaPtpi5A7rZGxcRxUcoKEKRv5NoED8JTpu"
                },
                {
                    "type": "pure",
                    "valueType": "u64",
                    "value": "58"
                },
                {
                    "type": "pure",
                    "valueType": "0x1::string::String",
                    "value": "当前功德：58"
                }
            ],
            "transactions": [
                {
                    "MoveCall": {
                        "package": "0x544f19419ede80e69bf24f297effefcf3549710ffeee4b3a07aae34fa42588ba",
                        "module": "gdNft",
                        "function": "add_count",
                        "arguments": [
                            {
                                "Input": 0
                            },
                            {
                                "Input": 1
                            },
                            {
                                "Input": 2
                            }
                        ]
                    }
                }
            ]
        },
        "sender": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989",
        "gasData": {
            "payment": [
                {
                    "objectId": "0x076a77585915d5d7c17dc172e597b46d26a4852e056bf66a5025100cf0ff6a59",
                    "version": 252796841,
                    "digest": "6edRwq4CdbJcSqT59K5FCYPxPTizH1zSfgbNuiywG3e6"
                }
            ],
            "owner": "0x6db319f04b2c601f5fdf1e400bf7e2262a7a1338d867e6b63f360c7af3d3c989",
            "price": "1000",
            "budget": "3016576"
        }
    }
}

[klren0312]

在这个交易结果中，gas的消耗可以通过以下几个字段综合分析得出：

1. gasUsed 部分的字段：

computationCost: 表示执行计算所需的gas量（1000000）。
storageCost: 表示存储相关操作所需的gas量（3845600）。
storageRebate: 表示存储操作返还的gas量（3807144）。
nonRefundableStorageFee: 表示不可退还的存储费（38456）。
这些字段表示交易执行过程中与计算和存储相关的gas消耗情况。

2. 计算实际的消耗量：

实际消耗的gas可以通过公式计算：

实际消耗的 gas = computationCost + storageCost − storageRebate

3. 带入数据：

实际消耗的 gas=1000000+3845600−3807144=1038456

4. 确认费用与预算：

gasData中的price为每单位gas的价格（1000）。
budget为最大可用gas预算（3016576）。

实际费用为gas消耗量×price：

实际费用 = 1038456 × 1000 = 1038456000

因为实际费用小于预算，交易可以成功。

5. 交易中balanceChanges的验证：

balanceChanges中显示 SUI 余额减少了 -1038456，和实际消耗一致。

总结

本次交易总消耗为 1038456 gas，费用已在balanceChanges中体现，并从账户余额中扣除。