超级账本hyperledger fabric文章002链码的结构

002学院：国内职业教育领先品：Chaincode接typetypeChaincodeinterfaceInit(stubshim.ChaincodeStubInterface)peer.ResponseInvoke(stubshim.ChaincodeStubInterface)peer.Response链码的基本package//引入相import )typeSimpleChaincodestruct}链码实例化（instantiate）或升级（upgrade）时调用Initfunc(t*SimpleChaincode)Init(stubshim.ChaincodeStubInterface)peer.Responreturn}链码收到调用（invoke）或查询（query）时调用Invokefunc(t*SimpleChaincode)Invoke(stubshim.ChaincodeStubInterface)peer.Response{return}主函数，调用shim.Startfuncmain()err:=ifif(err!=fmt.Printf("ErrorstartingSimpleChaincodeis%s链码通 提供的方法来和修改账本状态初始化的时候，给str赋值查询str当前的值重新设置str的值再次查询str的package ) oworldstruct}func(t oworld)Init(stubshim.ChaincodeStubInterface){fmt.Println(" oworldinit")args:=stub.GetStringArgs()err:=iferr!=nil oworldiniterr}return}func(t oworld)Invoke(stubshim.ChaincodeStubInterface){fn,args:=varresultstringvarerrerroriffn=="set"result,err=result,err=}iferr!={}return}funcset(stubshim.ChaincodeStubInterface,args[]string)(string,error){fmt.Println(" oworldset")err:=iferr!=nilreturn"",fmt.Errorf("Failedtosetasset:%s",}return}funcget(stubshim.ChaincodeStubInterface,args[]string)(string,error){value,err:=stub.GetState(args[0])iferr!=nilreturn"",fmt.Errorf("Failedtogetasset:%s",}ifvalue==nilreturn"",fmt.Errorf("Assetnotfound:%s",}return}funcmain()err:= iferr!=nilfmt.Printf("shimstarterr}}packagemainimport( )funccheckInit(t*testing.T,stub*shim.MockStub,args{res:=stub.MockInit("1",ifres.Status!=shim.OKfmt.Println("Initfailed",string(res.Message))}}funccheckQuery(t*testing.T,stub*shim.MockStub,namestring)res:=stub.MockInvoke("1",[][]byte{[]byte("get"),ifres.Status!=shim.OKfmt.Println("Query",name,"failed",string(res.Message))}ifres.Payload==nilfmt.Println("Query",name,"failedtogetvalue")}fmt.Println("Queryvalue",name,"was",}funccheckInvoke(t*testing.T,stub*shim.MockStub,args{res:=stub.MockInvoke("1",ifres.Status!=shim.OKfmt.Println("Invoke",args,"failed",string(res.Message))}}func oworld(t*testing.T)o:= stub:= checkInit(t,stub,[][]byte{[]byte("str"), checkQuery(t,checkQuery(t,stub,checkInvoke(t,stub,[][]byte{[]byte("set"),[]byte("str"),[]byte("checkQuery(t,stub,通 测试相应的方法，运行