Evolution Process and Supply Chain Adaptation of Smart Contracts in Blockchain

Algorithm 1

The main management process of the semipublic chain.

	pragma solidity ^0.4.11;
	contract Semi-PublicControl {
	//Declare addresses for different roles.
	address public CommanderAddress; address public EndorserAddress;
	address public OrdererAddress; address public CommitterAddress;
	//Commander node authority control and verification
	modifier onlyCommander() {
	require(msg.sender == commanderAddress);}
	//Endorser node authority control and verification
	modifier onlyEndorser() {
	require(msg.sender == EndorserAddress);}
	//Orderer node authority control and verification
	modifier onlyOrderer() {
	require(msg.sender == OrdererAddress);}
	//Committer node authority control and verification
	modifier onlyCommitter() {
	require(msg.sender == CommitterAddress);}
	//Permission node authority control and verification
	modifier onlyPermission() {
	require(
	msg.sender == OrdererAddress||msg.sender == CommanderAddress||msg.sender == EndorserAddress||msg.sender == CommitterAddress);}
	//Set up a new Commander, only the Commander has authority function setCommander(address_newcommander) external onlyCommander {
	//Address cannot be null check
	require(_newCommander != address(0));
	CommanderAddress = _newcommander;}
	//Set up a new Endorser, only the Commander has authority function setEndorser(address_newEndorser) external onlyCommander { require(_newEndorser != address(0));
	EndorserAddress = _newEndorser;}
	//Set up a new Orderer, only the Commander has authority function setOrderer (address_newOrderer) external onlyCommander {
	require(_newOrderer != address(0));
	OrdererAddress = _newOrderer;}
	//Set up a new Committer, only the Commander has authority function setCommitter (address_newCommitter) external onlyCommander {
	require(_newCommitter != address(0));
	CommitterAddress = _newCommitter;}
	//Permission node universal permission, only Permission node has permission function TODO (address_newCommitter) external onlyPermission {
	//This method verifies the Permission node address before executing the code}}