Vnode节点池部署

首先部署vnode节点池合约，VnodeProtocolBase，如果加入现成的vnode节点池，则可以忽略此步骤。

加入节点池的代理Vnode节点被用于提供应用链调用服务和应用链历史数据中转服务的节点。

以下为nodejs部署示例：最低保证金为 2 moac

> chain3 = require('chain3')
> solc = require('solc')
> chain3 = new chain3();
> chain3.setProvider(new chain3.providers.HttpProvider('http://localhost:8545'));
> solfile = 'VnodeProtocolBase.sol';
> contract = fs.readFileSync(solfile, 'utf8');
> output = solc.compile(contract, 1);
> abi = output.contracts[':VnodeProtocolBase'].interface;
> bin = output.contracts[':VnodeProtocolBase'].bytecode;
> VnodeProtocolBaseContract = chain3.mc.contract(JSON.parse(abi));
> chain3.personal.unlockAccount(chain3.mc.accounts[0], '123456');
> VnodeProtocolBase = VnodeProtocolBaseContract.new( 2, { from: chain3.mc.accounts[0],  data: '0x' + bin,  gas: '5000000'});
> chain3.mc.getTransactionReceipt(VnodeProtocolBase.transactionHash).contractAddress

部署完毕后，获得 vnode节点池合约地址 0x22f141dcc59850707708bc90e256318a5fe0b928

vnode 设置代理并加入节点池

修改vnode目录配置文件vnodeconfig.json: VnodeBeneficialAddress里设置收益账号： 0xf103bc1c054babcecd13e7ac1cf34f029647b08c

这个账号也作为vnode的address，节点池中对应这个vnode的唯一编号

调用vnode节点池合约register方法加入节点池

参数:

from： 应用链测试账号
value：押金，必须大于节点池合约的设置值
to: vnode节点池合约地址
data: register(address,string)

关于data传递调用register参数说明:

根据ABI chain3.sha3("register(address,string)") = 0x32434a2e90725ed590daff07a244305001c58c49f7bef73ce5e7249acf69f561
        取前4个字节 0x32434a2e
第一个参数address 传  vnodeconfig.json的VnodeBeneficialAddress  （前面补24个0， 凑足32个字节）
        000000000000000000000000f103bc1c054babcecd13e7ac1cf34f029647b08c
第二个参数string传 vnode提供给应用链的调用地址 192.168.10.209:50062
端口号对应vnodeconfig.json的VnodeServiceCfg
        string数据类型 + string数据长度 + string内容
        string数据类型： 0000000000000000000000000000000000000000000000000000000000000040
        string内容： data = new Buffer('192.168.10.209:50062', 'utf8').toString('hex');
                后面补0， 凑足32个字节   3139322e3136382e31302e3230393a3530303632000000000000000000000000
        string数据长度:     3139322e3136382e31302e3230393a3530303632        20字节
                0000000000000000000000000000000000000000000000000000000000000014
        data = '0x32434a2e000000000000000000000000f103bc1c054babcecd13e7ac1cf34f029647b08c000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000143139322e3136382e31302e3230393a3530303632000000000000000000000000'
也可以调用合约对象的getData方法获得data参数
        data = VnodeProtocolBase.register.getData(via, '192.168.10.209:50062')

调用示例:

> amount = chain3.toSha(5,'mc')
> data = '0x32434a2e000000000000000000000000f103bc1c054babcecd13e7ac1cf34f029647b08c000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000143139322e3136382e31302e3230393a3530303632000000000000000000000000';
> chain3.personal.unlockAccount(chain3.mc.accounts[0], '123456');
> chain3.mc.sendTransaction({ from: chain3.mc.accounts[0], value:amount, to: '0x22f141dcc59850707708bc90e256318a5fe0b928', gas: "5000000", gasPrice: chain3.mc.gasPrice, data: data });

验证： 访问Vnode节点池合约的vnodeCount

> VnodeProtocolBase.vnodeCount()
> chain3.mc.getStorageAt("0x22f141dcc59850707708bc90e256318a5fe0b928",0x02)   // 注意vnodeCount变量在合约中变量定义的位置（16进制）