EOS开发3-简单智能合约案例

作者: 苏渝粤 | 来源:发表于2018-06-05 11:47 被阅读919次

EOS开发3-简单智能合约案例
EOS智能合约开发(四)：智能合约部署及调试(附编程示例)
1. EOS 智能合约开发 - HelloWorld
EOS智能合约开发(三)：EOS创建和管理账号
【许晓笛】开发第一个 EOS 智能合约
EOS开发入门之HelloWorld
EOS开发(1) -- 安装及常用工具介绍
EOS开发(3) -- currency合约分析
EOS开发(2) -- 发布智能合约
EOS之Hello智能合约解析

1 编写合约代码

桌面创建“hello”的文件夹，进入该文件夹，创建hello.cpp文件，粘贴下面的代码：

#include <eosiolib/eosio.hpp>
#include <eosiolib/print.hpp>
using namespace eosio;

class hello : public eosio::contract {
  public:
      using contract::contract;

      /// @abi action 
      void hi( account_name user ) {
         print( "Hello, ", name{user} );
      }
};

EOSIO_ABI( hello, (hi) )

2 生成.wast文件

有可能会缺少很多标准库，比如"'eosiolib/eosio.hpp' file not found",解决方法是在build文件夹下sudo make install
当上述方法处理后，也有可能提示"'stdint.h' file not found",请在tool下不要使用./eosiocpp命令，采用eosiocpp命令

wsilverkydeMacBook-Pro:tools wsilverky$ eosiocpp -o ~/Desktop/hello/hello.wast ~/Desktop/hello/hello.cpp 
In file included from /Users/wsilverky/Desktop/hello/hello.cpp:1:
In file included from /usr/local/include/eosiolib/eosio.hpp:7:
In file included from /usr/local/include/eosiolib/action.hpp:7:
In file included from /usr/local/include/eosiolib/datastream.hpp:9:
In file included from /usr/local/include/boost/container/flat_set.hpp:27:
In file included from /usr/local/include/boost/container/new_allocator.hpp:24:
/usr/local/include/boost/container/throw_exception.hpp:56:21: warning: address of array 'msg' will always
      evaluate to 'true' [-Wpointer-bool-conversion]
      BOOST_ASSERT(!msg);
                   ~^~~
/usr/local/include/boost/assert.hpp:60:36: note: expanded from macro 'BOOST_ASSERT'
# define BOOST_ASSERT(expr) assert(expr)
                                   ^~~~
/usr/local/include/musl/upstream/include/assert.h:8:28: note: expanded from macro 'assert'
#define assert(x) ((void)((x) || (__assert_fail(#x, __FILE__, __LINE__, __func__),0)))
                           ^
In file included from /Users/wsilverky/Desktop/hello/hello.cpp:1:
In file included from /usr/local/include/eosiolib/eosio.hpp:7:
In file included from /usr/local/include/eosiolib/action.hpp:7:
In file included from /usr/local/include/eosiolib/datastream.hpp:9:
In file included from /usr/local/include/boost/container/flat_set.hpp:27:
In file included from /usr/local/include/boost/container/new_allocator.hpp:24:
/usr/local/include/boost/container/throw_exception.hpp:64:25: warning: address of array 'msg' will always
      evaluate to 'true' [-Wpointer-bool-conversion]
      BOOST_ASSERT_MSG(!msg, str);
                       ~^~~
/usr/local/include/boost/assert.hpp:61:46: note: expanded from macro 'BOOST_ASSERT_MSG'
# define BOOST_ASSERT_MSG(expr, msg) assert((expr)&&(msg))
                                             ^~~~
/usr/local/include/musl/upstream/include/assert.h:8:28: note: expanded from macro 'assert'
#define assert(x) ((void)((x) || (__assert_fail(#x, __FILE__, __LINE__, __func__),0)))
                           ^
In file included from /Users/wsilverky/Desktop/hello/hello.cpp:1:
In file included from /usr/local/include/eosiolib/eosio.hpp:7:
In file included from /usr/local/include/eosiolib/action.hpp:7:
In file included from /usr/local/include/eosiolib/datastream.hpp:9:
In file included from /usr/local/include/boost/container/flat_set.hpp:27:
In file included from /usr/local/include/boost/container/new_allocator.hpp:24:
/usr/local/include/boost/container/throw_exception.hpp:72:25: warning: address of array 'msg' will always
      evaluate to 'true' [-Wpointer-bool-conversion]
      BOOST_ASSERT_MSG(!msg, str);
                       ~^~~
/usr/local/include/boost/assert.hpp:61:46: note: expanded from macro 'BOOST_ASSERT_MSG'
# define BOOST_ASSERT_MSG(expr, msg) assert((expr)&&(msg))
                                             ^~~~
/usr/local/include/musl/upstream/include/assert.h:8:28: note: expanded from macro 'assert'
#define assert(x) ((void)((x) || (__assert_fail(#x, __FILE__, __LINE__, __func__),0)))
                           ^
In file included from /Users/wsilverky/Desktop/hello/hello.cpp:1:
In file included from /usr/local/include/eosiolib/eosio.hpp:7:
In file included from /usr/local/include/eosiolib/action.hpp:7:
In file included from /usr/local/include/eosiolib/datastream.hpp:9:
In file included from /usr/local/include/boost/container/flat_set.hpp:27:
In file included from /usr/local/include/boost/container/new_allocator.hpp:24:
/usr/local/include/boost/container/throw_exception.hpp:80:25: warning: address of array 'msg' will always
      evaluate to 'true' [-Wpointer-bool-conversion]
      BOOST_ASSERT_MSG(!msg, str);
                       ~^~~
/usr/local/include/boost/assert.hpp:61:46: note: expanded from macro 'BOOST_ASSERT_MSG'
# define BOOST_ASSERT_MSG(expr, msg) assert((expr)&&(msg))
                                             ^~~~
/usr/local/include/musl/upstream/include/assert.h:8:28: note: expanded from macro 'assert'
#define assert(x) ((void)((x) || (__assert_fail(#x, __FILE__, __LINE__, __func__),0)))
                           ^
In file included from /Users/wsilverky/Desktop/hello/hello.cpp:1:
In file included from /usr/local/include/eosiolib/eosio.hpp:7:
In file included from /usr/local/include/eosiolib/action.hpp:7:
In file included from /usr/local/include/eosiolib/datastream.hpp:9:
In file included from /usr/local/include/boost/container/flat_set.hpp:27:
In file included from /usr/local/include/boost/container/new_allocator.hpp:24:
/usr/local/include/boost/container/throw_exception.hpp:88:25: warning: address of array 'msg' will always
      evaluate to 'true' [-Wpointer-bool-conversion]
      BOOST_ASSERT_MSG(!msg, str);
                       ~^~~
/usr/local/include/boost/assert.hpp:61:46: note: expanded from macro 'BOOST_ASSERT_MSG'
# define BOOST_ASSERT_MSG(expr, msg) assert((expr)&&(msg))
                                             ^~~~
/usr/local/include/musl/upstream/include/assert.h:8:28: note: expanded from macro 'assert'
#define assert(x) ((void)((x) || (__assert_fail(#x, __FILE__, __LINE__, __func__),0)))
                           ^
5 warnings generated.

3 生成.abi文件

wsilverkydeMacBook-Pro:tools wsilverky$ eosiocpp -g ~/Desktop/hello/hello.abi ~/Desktop/hello/hello.cpp 
1346075ms thread-0   abi_generator.hpp:68          ricardian_contracts  ] Warning, no ricardian clauses found for hello

1346075ms thread-0   abi_generator.hpp:75          ricardian_contracts  ] Warning, no ricardian contract found for hi

Generated /Users/wsilverky/Desktop/hello/hello.abi ...
wsilverkydeMacBook-Pro:tools wsilverky$ ls ~/Desktop/hello/
hello.abi   hello.cpp   hello.wasm  hello.wast

4 创建钱包账号

使用EOS开发2-钱包合约案例创建钱包方法创建，此处使用已创建的accounttest账号

5 部署合约

5.1 打开服务器

5.2 进入build文件夹

5.3 解锁钱包

wsilverkydeMacBook-Pro:build wsilverky$ cleos wallet unlock --password PW5JWkf19kjUybLgpHD5LXNgcSc9oqh5Cs7CSggEUbVu1sDZ16Jmg
Unlocked: default

5.4 部署

wsilverkydeMacBook-Pro:build wsilverky$ cleos set contract accounttest ./contracts/hello
Reading WAST/WASM from ./contracts/hello/hello.wasm...
Using already assembled WASM...
Publishing contract...
executed transaction: c86c768adc4a7f06848f607f14fea9f1035191d959f78199bb0fad7c609ae105  4160 bytes  1394 us
#         eosio <= eosio::setcode               {"account":"accounttest","vmtype":0,"vmversion":0,"code":"0061736d01000000013b0c60027f7e006000017e60...
#         eosio <= eosio::setabi                {"account":"accounttest","abi":"0e656f73696f3a3a6162692f312e30000102686900010475736572046e616d650100...
warning: transaction executed locally, but may not be confirmed by the network yet

6 执行合约

wsilverkydeMacBook-Pro:build wsilverky$ cleos push action accounttest hi '{"user":"accounttest"}' -p accounttest -j
{
  "transaction_id": "66fdeca7b39e17c23588f51ae43232b8f683ef9a3e638478b4cef257bfe26d17",
  "processed": {
    "id": "66fdeca7b39e17c23588f51ae43232b8f683ef9a3e638478b4cef257bfe26d17",
    "receipt": {
      "status": "executed",
      "cpu_usage_us": 227,
      "net_usage_words": 13
    },
    "elapsed": 227,
    "net_usage": 104,
    "scheduled": false,
    "action_traces": [{
        "receipt": {
          "receiver": "accounttest",
          "act_digest": "85f287c2c5810578b8599616f3125aa3cd7c1193098cce52a1e92954591b0022",
          "global_sequence": 77429,
          "recv_sequence": 5,
          "auth_sequence": [[
              "accounttest",
              10
            ]
          ],
          "code_sequence": 2,
          "abi_sequence": 2
        },
        "act": {
          "account": "accounttest",
          "name": "hi",
          "authorization": [{
              "actor": "accounttest",
              "permission": "active"
            }
          ],
          "data": {
            "user": "accounttest"
          },
          "hex_data": "003256394f4d1132"
        },
        "elapsed": 68,
        "cpu_usage": 0,
        "console": "",
        "total_cpu_usage": 0,
        "trx_id": "66fdeca7b39e17c23588f51ae43232b8f683ef9a3e638478b4cef257bfe26d17",
        "inline_traces": []
      }
    ],
    "except": null
  }
}

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