webase go-sdk 簡單使用

昨晚没做梦發表於2024-05-15
WebGo

本流程在test目錄下，其中用到的 solc-0.4.25 和 abigen 工具網上教程都比較詳細，就暫時不展開聊，今天就大概描述流程。

1.將目錄下的test.sol檔案編譯

webase go-sdk 簡單使用 
pragma solidity ^0.4.25;

import "./Table.sol";

contract test {
    
    string constant TABLE_NAME = "test2";
    
    event insertEvent(string id, string title, uint iuser_id,uint ruser_id,int stauts);
    event updateEvent(string id, int stauts);
    
    constructor() public{
        TableFactory tf = TableFactory(0x1001);
        
        tf.createTable(TABLE_NAME,"id","title,iuser_id,ruser_id,stauts,start_time,sign_time");
    }
    
    function set(string id, string title, uint iuser_id,uint ruser_id,int stauts) public returns(int) {
        TableFactory tf = TableFactory(0x1001);
        Table table = tf.openTable(TABLE_NAME);
        
        uint t = 0;
        
        Entry entry = table.newEntry();
        entry.set("id",id);
        entry.set("title",title);
        entry.set("iuser_id",iuser_id);
        entry.set("ruser_id",ruser_id);
        entry.set("stauts",stauts);
        entry.set("start_time",now);
        entry.set("sign_time",t);
        
        int count = table.insert(id,entry);
        emit insertEvent(id,title,iuser_id,ruser_id,stauts);
        return count;
    }
    
    function update(string id,int stauts) public returns(int) {
        TableFactory tf = TableFactory(0x1001);
        Table table = tf.openTable(TABLE_NAME);
        
        Condition condition = table.newCondition();
        //condition.EQ("id",id);
        
        Entry entry = table.newEntry();
        entry.set("stauts",stauts);
        
        if (stauts == 5){
            entry.set("sign_time",now);
        }
        
        int count = table.update(id,entry,condition);
        emit updateEvent(id,stauts);
        return count;
    }
    
    function get(string id) public view returns (string,uint,uint,int,uint,uint) {
        TableFactory tf = TableFactory(0x1001);
        Table table = tf.openTable(TABLE_NAME);
        
        Condition condition = table.newCondition();
        //condition.EQ("id",id);
        Entries entries = table.select(id,condition);
        
        if(entries.size() == 0){
            return("", 0, 0, 0, 0, 0);
        }
        
        uint iuser_id;
        uint ruser_id;
        int stauts;
        iuser_id = entries.get(0).getUInt("iuser_id");
        ruser_id = entries.get(0).getUInt("ruser_id");
        stauts = entries.get(0).getInt("stauts");
        
        return (entries.get(0).getString("title"), iuser_id, ruser_id, stauts,entries.get(0).getUInt("start_time"), entries.get(0).getUInt("sign_time"));
    }
    
}
test.sol

由於引用了Table.sol，所以還要將Table.sol放到目錄下。

webase go-sdk 簡單使用 
pragma solidity ^0.4.24;

contract TableFactory {
    function openTable(string) public view returns (Table); //open table
    function createTable(string, string, string) public returns (int256); //create table
}

//select condition
contract Condition {
    function EQ(string, int256) public view;
    function EQ(string, string) public view;
    function EQ(string, address) public view;

    function NE(string, int256) public view;
    function NE(string, string) public view;

    function GT(string, int256) public view;
    function GE(string, int256) public view;

    function LT(string, int256) public view;
    function LE(string, int256) public view;

    function limit(int256) public view;
    function limit(int256, int256) public view;
}

//one record
contract Entry {
    function getInt(string) public view returns (int256);
    function getUInt(string) public view returns (uint256);
    function getAddress(string) public view returns (address);
    function getBytes64(string) public view returns (bytes1[64]);
    function getBytes32(string) public view returns (bytes32);
    function getString(string) public view returns (string);

    function set(string, int256) public;
    function set(string, uint256) public;
    function set(string, string) public;
    function set(string, address) public;
}

//record sets
contract Entries {
    function get(int256) public view returns (Entry);
    function size() public view returns (int256);
}

//Table main contract
contract Table {
    function select(string, Condition) public view returns (Entries);
    function insert(string, Entry) public returns (int256);
    function update(string, Entry, Condition) public returns (int256);
    function remove(string, Condition) public returns (int256);

    function newEntry() public view returns (Entry);
    function newCondition() public view returns (Condition);
}

contract KVTableFactory {
    function openTable(string) public view returns (KVTable);
    function createTable(string, string, string) public returns (int256);
}

//KVTable per permiary key has only one Entry
contract KVTable {
    function get(string) public view returns (bool, Entry);
    function set(string, Entry) public returns (int256);
    function newEntry() public view returns (Entry);
}
Table.sol

然後執行命令：

./solc-0.4.25 --bin --abi -o ./ ./test.sol

結果如下：

2.abigen生成go檔案

./abigen --bin ./test.bin --abi ./test.abi --pkg test --type test --out ./test.go

結果如下：

3.複製節點的SDK檔案

將上面的sdk資料夾，直接複製到test目錄下

4.使用get_account.sh指令碼生成賬戶私鑰

get_account.sh

該指令碼在FISCO的console中，可以直接複製下來執行

./get_account.sh

執行完畢，生成一個目錄，裡面有我們需要的賬戶私鑰檔案（這個賬戶私鑰檔案（*.pem），可以重複使用），將它複製到test目錄下 。

5.配置config.toml

可以複製go-sdk裡的config.toml

也可以直接新建一個config.toml檔案

webase go-sdk 簡單使用 
[Network]
#type rpc or channel
Type="channel"
CAFile="./sdk/ca.crt"
Cert="./sdk/sdk.crt"
Key="./sdk/sdk.key"
# if the certificate context is not empty, use it, otherwise read from the certificate file
# multi lines use triple quotes
CAContext=''''''
KeyContext=''''''
CertContext=''''''

[[Network.Connection]]
NodeURL="127.0.0.1:20200"
GroupID=1
# [[Network.Connection]]
# NodeURL="127.0.0.1:20200"
# GroupID=2

[Account]
# only support PEM format for now
KeyFile="./accounts/0x2b4c58c9b6bb9165931c9956f96d69723bb92754.pem"

[Chain]
ChainID=1
SMCrypto=false

[log]
Path="./"
config.toml

將config.toml的KeyFile修改為上一步獲得的pem檔案的名字，然後其他的NodeURL和GroupID等，根據自己需要進行修改。

6.使用介面

在test目錄下新建一個cmd目錄，編寫一個main.go來呼叫鏈碼

webase go-sdk 簡單使用 
package main

import (
    "math/big"
    "fmt"
    "log"
    "test"
    "github.com/FISCO-BCOS/go-sdk/client"
    "github.com/FISCO-BCOS/go-sdk/conf"
    "github.com/ethereum/go-ethereum/common"
)

func main(){
    configs, err := conf.ParseConfigFile("config.toml")  //讀取config.toml檔案
    if err != nil {
        log.Fatal(err)
    }
    config := &configs[0]

    client, err := client.Dial(config)  //載入配置檔案，生成client進行相關鏈操作
    if err != nil {
        log.Fatal(err)
    }

    contractAddress := common.HexToAddress("0xac05ff0709f443db85f7cd524e142e1778a8e426") // 這裡請放入剛剛部署的合約地址，注意，是你自己的機子部署的地址
    instance, err := test.NewTest(contractAddress, client)  //根據地址和client生成test合約物件
    if err != nil {
        log.Fatal(err)
    }

    testSession := &test.TestSession{Contract: instance, CallOpts: *client.GetCallOpts(), TransactOpts: *client.GetTransactOpts()}

    a := big.NewInt(7)
    b := big.NewInt(8)
    c := big.NewInt(0)
    _,tx,receipt,err := testSession.Set("5","gosdk_title",a,b,c)
    if err != nil{
        log.Fatal(err)
    }
    fmt.Printf("tx sent: %s\n", tx.Hash().Hex())  //呼叫set方法的交易hash
    fmt.Printf("transaction hash of receipt: %s\n", receipt.GetTransactionHash())  //呼叫set方法的交易hash ,與上面的hash是一樣，只是存在不同的地方而已

    title,iuser_id,ruser_id,stauts,start_time,sign_time,err := testSession.Get("5")
    if err != nil{
        log.Fatal(err)
    }
    fmt.Printf("title: %s\niuser_id: %d\nruser_id: %d\nstauts: %d\nstart_time: %d\nsign_time: %d\n",title,iuser_id,ruser_id,stauts,start_time,sign_time)
}
main.go

在執行這個main.go之前應該先部署鏈碼，但是由於筆者是先在webase上編寫test.sol部署後，才進行go-sdk的配置的，所以這裡就不重複部署了。

go mod init
go mod tidy
go run ./cmd/main.go

結果如下：

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