EOS智能合约发布

本文由币乎(bihu.com)内容支持计划奖励

The Most Powerful Infrastructure for Decentralized Applications

智能合约发布

1. 按照官方文档介绍，首先执行eosd程序,肯定会报错，原因是相关的配置文件必要项没有
2. 配置config.ini,该文件在第一步运行一次后，会产生

cd ~/eos/eos/build/programs
vi data-dir/config.ini

需要修改的主要几项是(官方文档提供)：
其中对于创世块的位置，可以默认使用程序自带的,位置在programs目录下，注意大坑！！！！这个genesis.json里面的initial_timestamp千万别改的太临近当前时间，不然无法产生块。。。。

# Load the testnet genesis state, which creates some initial block producers with the default key
genesis-json = ~/eos/eos/build/programs/genesis.json
 # Enable production on a stale chain, since a single-node test chain is pretty much always stale
enable-stale-production = true
# Enable block production with the testnet producers
producer-name = inita
producer-name = initb
producer-name = initc
producer-name = initd
producer-name = inite
producer-name = initf
producer-name = initg
producer-name = inith
producer-name = initi
producer-name = initj
producer-name = initk
producer-name = initl
producer-name = initm
producer-name = initn
producer-name = inito
producer-name = initp
producer-name = initq
producer-name = initr
producer-name = inits
producer-name = initt
producer-name = initu
# Load the block producer plugin, so you can produce blocks
plugin = eosio::producer_plugin
# Wallet plugin
plugin = eosio::wallet_api_plugin
# As well as API and HTTP plugins
plugin = eosio::chain_api_plugin
plugin = eosio::http_plugin

现在启动就好了
./eosd/eosd

image.png
紧接着下面会有block产生，由于我是第二次启动的所以block没有从第一个开始
image.png

3. 创建一个钱包

cd ~/eos/eos/build/programs/eosc
./eosc wallet create

这一步会产生钱包的名称以及钱包的密钥

image.png

密钥需要保存好，后面需要unlock的时候回用到

4. 导入账户
   在创世文件中有初始化多个账户，其中一个inita, 它对应的public key 可以看到是
   EOS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8BhtHuGYqET5GDW5CV
   将该账户导入到钱包需要知道的private key，在config.ini中有提供
   5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP79zkvFD3
   执行
   ./eosc wallet import 5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP79zkvFD3
   导入成功，现在钱包中有了一个inita的账户，下面还需要再创建一个账户，该账户是我们将创建的合约的拥有者，每个账户需要两个key，所以如下我们创建两个key，并在创建账户的时候，使用上这两个key

> ./eosc create key
Private key: 5Jta_pri1
Public key: EOS8_pub1
> ./eosc create key
Private key: 5JJG_pri2
Public key: EOS5_pub2
# inita 在这里是授权账户，该账户创建了currency账户
./eosc create account inita currency EOS8_pub1 EOS5_pub2

注意上面生成的两个私钥都需要保存
同时把创建的key继续导入的钱包中
./eosc wallet import 5JJG_pri2
现在可以查看这个账户的信息了

./eosc/eosc get account currency
{
  "account_name": "currency",
  "eos_balance": "0.0000 EOS",
  "staked_balance": "0.0001 EOS",
  "unstaking_balance": "0.0000 EOS",
  "last_unstaking_time": "2106-02-07T06:28:15",
  "permissions": [{
      "perm_name": "active",
      "parent": "owner",
      "required_auth": {
        "threshold": 1,
        "keys": [{
            "key": "EOS5n7NbqJb5r6vGVFTB6r5mfBE8fp93xARSxomSHSqTcsvxt1fD9",
            "weight": 1
          }
        ],
        "accounts": []
      }
    },{
      "perm_name": "owner",
      "parent": "",
      "required_auth": {
        "threshold": 1,
        "keys": [{
            "key": "EOS8M1GXvH3k6vC5KuVLvm4hUU1AwHozE2nEKTT3yNYFE71V3PVGW",
            "weight": 1
          }
        ],
        "accounts": []
      }
    }
  ]
}

5. 合约上传
   eos项目默认提供了一个currency合约，我们直接使用该合约上传到eos上，上传之前可以先检验下合约是否存在

./eosc get code currency
code hash: 0000000000000000000000000000000000000000000000000000000000000000

类似的hash值返回表示没有该合约

./eosc set contract currency ../../contracts/currency/currency.wast ../../contracts/currency/currency.abi

这会返回一大串json，就不截图了
我们可以直接查看合约的地址

> ./eosc/eosc get code currency                                                                                
code hash: 86968a9091ce32255777e2017fccaede8cea2d4978b30f25b41ee97b9d77bed0

6. 调用合约
   6.1 首先查看两个账户的余额

> ./eosc/eosc get table currency currency account                                                              
{
  "rows": [{
      "key": "account",
      "balance": 1000000000
    }
  ],
  "more": false
}
> ./eosc/eosc get table inita currency account                                                                
{
  "rows": [{
      "key": "account",
      "balance": 0
    }
  ],
  "more": false
}

下面调用该合约完成转账,从currency账户转50到inita

./eosc push message currency transfer '{"from":"currency","to":"inita","quantity":50}' --scope currency,inita --permission currency@active

执行完成后，重新查询余额

> ./eosc/eosc get table currency currency account                                                              
{
  "rows": [{
      "key": "account",
      "balance": 1000000000
    }
  ],
  "more": false
}
> ./eosc/eosc get table inita currency account                                                                
{
  "rows": [{
      "key": "account",
      "balance": 0
    }
  ],
  "more": false
}