本流程在test目录下，其中用到的 solc-0.4.25 和 abigen 工具网上教程都比较详细，就暂时不展开聊，今天就大概描述流程。
1.将目录下的test.sol文件编译
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
由于引用了Table.sol，所以还要将Table.sol放到目录下。
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
然后执行命令：
./solc-0.4.25 --bin --abi -o ./ ./test.sol
结果如下：
2.abigen生成go文件
./abigen --bin ./test.bin --abi ./test.abi --pkg test --type test --out ./test.go
结果如下：
3.复制节点的SDK文件
将上面的sdk文件夹，直接复制到test目录下
4.使用get_account.sh脚本生成账户私钥
该脚本在FISCO的console中，可以直接复制下来执行
./get_account.sh
执行完毕，生成一个目录，里面有我们需要的账户私钥文件（这个账户私钥文件（*.pem），可以重复使用），将它拷贝到test目录下 。
5.配置config.toml
可以拷贝go-sdk里的config.toml
也可以直接新建一个config.toml文件
[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
将config.toml的KeyFile修改为上一步获得的pem文件的名字，然后其他的NodeURL和GroupID等，根据自己需要进行修改。
6.使用接口
在test目录下新建一个cmd目录，编写一个main.go来调用链码
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") //读取config.toml文件
if err != nil {
log.Fatal(err)
}
config := &configs[0]
client, err := client.Dial(config) //加载配置文件，生成client进行相关链操作
if err != nil {
log.Fatal(err)
}
contractAddress := common.HexToAddress("0xac05ff0709f443db85f7cd524e142e1778a8e426") // 这里请放入刚刚部署的合约地址，注意，是你自己的机子部署的地址
instance, err := test.NewTest(contractAddress, client) //根据地址和client生成test合约对象
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()) //调用set方法的交易hash
fmt.Printf("transaction hash of receipt: %s\n", receipt.GetTransactionHash()) //调用set方法的交易hash ,与上面的hash是一样，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
在执行这个main.go之前应该先部署链码，但是由于笔者是先在webase上编写test.sol部署后，才进行go-sdk的配置的，所以这里就不重复部署了。
go mod init go mod tidy go run ./cmd/main.go
结果如下：
标签：function,string,public,webase,returns,go,view,id,sdk From： https://www.cnblogs.com/Owhy/p/18194331