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Auto Execution

CITA 自动执行合约。

简述

自动执行是底层的一个扩展功能，只有管理员可以注册，注册的自动执行合约需要继承 IAutoExec.sol，实现 autoExec 函数作为自动执行的入口。

合约信息

合约地址为: 0xffffffffffffffffffffffffffffffffff020013

接口签名如下:

======= system/AutoExec.sol:AutoExec =======
Function signatures:
844cbc43: autoExec()
f95b72de: contAddr()
4420e486: register(address)

操作示例

首先需要启动一条链

通过以下命令初始化一条链，生成配置文件：

$ bin/cita create \
    --super_admin "0x4b5ae4567ad5d9fb92bc9afd6a657e6fa13a2523" \
    --contract_arguments SysConfig.autoExec=true \
    --nodes "127.0.0.1:4000,127.0.0.1:4001,127.0.0.1:4002,127.0.0.1:4003"

其中 autoExec 为自动执行开关。

启动链接下来的步骤见快速入门部分。

其中测试合约函数签名如下:

======= contracts/AutoExec.sol:AutoExec =======
Function signatures:
844cbc43: autoExec()
0c55699c: x()

其中：

  • autoExec()： 为自动执行的入口，实现对 x 加一
  • x()： 表示获取x数值

接下来的测试，用 cita-cli 命令行模式（与交互式模式的命令是一致的）进行演示。

部署测试合约

使用默认私钥进行演示

  • 发送交易
$ cita-cli rpc sendRawTransaction \
    --code 0x608060405234801561001057600080fd5b5060cf8061001f6000396000f3006080604052600436106049576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff1680630c55699c14604e578063844cbc43146076575b600080fd5b348015605957600080fd5b506060608a565b6040518082815260200191505060405180910390f35b348015608157600080fd5b5060886090565b005b60005481565b60008081548092919060010191905055505600a165627a7a723058204a422f811fa5ff28e0e79adab0817a6ffe6d283011d9107b68a36bc95091abd30029 \
    --private-key 0x5f0258a4778057a8a7d97809bd209055b2fbafa654ce7d31ec7191066b9225e6 \
    --url http://127.0.0.1:1337

输出：

{
  "id": 4,
  "jsonrpc": "2.0",
  "result": {
    "hash": "0x4c590891fdfd89d5e064c467ac74196ef4fcba5e80dc670da01800c652650913",
    "status": "OK"
}
  • 获取交易回执
$ cita-cli rpc getTransactionReceipt \
    --hash 0x4c590891fdfd89d5e064c467ac74196ef4fcba5e80dc670da01800c652650913 \
    --url http://127.0.0.1:1337

输出：

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "blockHash": "0xae69b6b37e0eae54960a40bcce75f8495f97a1ffb5ec0397a542f8b85469e336",
    "blockNumber": "0x28e",
    "contractAddress": "0xd48cc17fdfa7e0af76637c5a9e658bcc9e0e9b8b",
    "cumulativeQuotaUsed": "0x1711d",
    "errorMessage": null,
    "logs": [
    ],
    "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "quotaUsed": "0x1711d",
    "root": null,
    "transactionHash": "0x4c590891fdfd89d5e064c467ac74196ef4fcba5e80dc670da01800c652650913",
    "transactionIndex": "0x0"
  }
}

其中合约地址为： 0xd48cc17fdfa7e0af76637c5a9e658bcc9e0e9b8b

查询 x 数值

$ cita-cli rpc call \
    --to 0xd48cc17fdfa7e0af76637c5a9e658bcc9e0e9b8b \
    --data 0x0c55699c \
    --url http://127.0.0.1:1337

输出：

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": "0x0000000000000000000000000000000000000000000000000000000000000000"
}

数值为 0

注册自动执行合约

调用 register 接口对测试合约进行注册。预期结果为 x 数值随块的增加而增加。

  • 发送交易
$ cita-cli rpc senRawTransaction \
    --code 0x4420e486000000000000000000000000d48cc17fdfa7e0af76637c5a9e658bcc9e0e9b8b \
    --private-key 0x5f0258a4778057a8a7d97809bd209055b2fbafa654ce7d31ec7191066b9225e6 \
    --address 0xffffffffffffffffffffffffffffffffff020013
    --url http://127.0.0.1:1337

输出：

{
  "id": 4,
  "jsonrpc": "2.0",
  "result": {
    "hash": "0xd9bd3a0dbc406d8772dcb85785863897f4102faac1fdcdc4247a735ac3d1a4a5",
    "status": "OK"
  }
}
  • 获取交易回执
$ cita-cli rpc getTransactionReceipt \
    --hash 0xd9bd3a0dbc406d8772dcb85785863897f4102faac1fdcdc4247a735ac3d1a4a5 \
    --url http://127.0.0.1:1337

输出：

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "blockHash": "0x107f386d21b5af1c7f4cab4802f63ac7e5989b623161cae2ba533c4ed32061bd",
    "blockNumber": "0x3a7",
    "contractAddress": null,
    "cumulativeQuotaUsed": "0x6e4a",
    "errorMessage": null,
    "logs": [
      {
        "address": "0xffffffffffffffffffffffffffffffffff020013",
        "blockHash": "0x107f386d21b5af1c7f4cab4802f63ac7e5989b623161cae2ba533c4ed32061bd",
        "blockNumber": "0x3a7",
        "data": "0x",
        "logIndex": "0x0",
        "topics": [
          "0x2d3734a8e47ac8316e500ac231c90a6e1848ca2285f40d07eaa52005e4b3a0e9",
          "0x000000000000000000000000d48cc17fdfa7e0af76637c5a9e658bcc9e0e9b8b"
        ],
        "transactionHash": "0xd9bd3a0dbc406d8772dcb85785863897f4102faac1fdcdc4247a735ac3d1a4a5",
        "transactionIndex": "0x0",
        "transactionLogIndex": "0x0"
      }
    ],
    "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000080000004000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000000000000000000100000000000800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000200000",
    "quotaUsed": "0x6e4a",
    "root": null,
    "transactionHash": "0xd9bd3a0dbc406d8772dcb85785863897f4102faac1fdcdc4247a735ac3d1a4a5",
    "transactionIndex": "0x0"
  }
}

这里从 logs 已经可以看出测试合约已经注册成功。

验证结果

查询 x 数值

$ cita-cli rpc call \
    --to 0xd48cc17fdfa7e0af76637c5a9e658bcc9e0e9b8b \
    --data 0x0c55699c \
    --url http://127.0.0.1:1337

输出：

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": "0x0000000000000000000000000000000000000000000000000000000000000026"
}

数值变为 26

自动执行生效。

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