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README
LGPL-2.1

小雉配置

项目地址

官网 http://www.feitianzhi.com/
github https://github.com/feitianzhi/fslib-config
gitee https://gitee.com/feitianzhi/fslib-config
QQ交流群:869598376

基于“小雉视频系统”中的配置组件构建

github https://github.com/feitianzhi/zos-open
gitee https://gitee.com/feitianzhi/zos-open

介绍

小雉配置简介

“小雉配置”为解决“小雉视频系统”项目中遇到的实际问题而开发的通用配置模块,旨在实现一种模块化配置,支持配置字段任意增删嵌套也能保持配置前后兼容的算法,满足“小雉视频系统”的未知开发需求(后期要增加的功能,ai算法是未知的,功能及ai算法需要的参数未知,有更优秀算法时已有算法需要被移除,其对应参数也应被删除)。

需求分析


      软件的开发离不开配置,传统的软件设计包括前端、后台和数据库3部分,三者是密切配合的统一整体,在实际项目中往往遇到以下问题:

  1. 因项目需求不明而增加、修改、删除参数导致配置结构调整后难以同已有数据兼容;
  2. 后台参数修改后,前端需要同步修改,无法做到老版本前端与新版本后台配合(新版本后台可能修正了bug,老版本前端属于老项目),修正老项目bug需要在老版本分支上进行,代码分支多,维护困难;
  3. 配置备份困难。首先后台与数据库之间有多个访问渠道,配置备份需要停机备份;其次备份的配置无法线上热还原(有差异部分相关模块重置,无修改部分持续工作,如仅1相机参数有区别,仅停掉1相机进行重连,其余相机持续工作);最后备份的配置无法在新版本或老版本上进行还原(因为字段结构不一样);
  4. 授权困难,配置臃肿。为实现所有用户需求,软件的参数量非常庞大,而对一个具体项目可能只需要其中的很少只关联10个参数的功能,把大量的参数置于系统中会拖慢系统(一个表只有1列可以允许插入1亿行,但如有1000列,可能表就只能插入10万行了)同时软件中需要通过授权判断而限制用户在授权范围内操作,系统调试困难--授权是在做一个减法操作;

思考与假设


      “小雉视频系统”是一套集所有客户需求于一体的一套视频软件,参数的修改随客户的要求变化而变化,均为不可预知的参数需求,为每位客户单独开一个分支会增加bug修正的同步成本和升级包制作成本,“小雉视频系统”迫切需要一套廉价的高效率的配置设计方案,要求方案具备如下特性:

  1. 配置项在各个模块中申明(限制值的类型、范围、个数和有效条件(比如A参数必须要B参数为1时才有效可设置)),在模块中读取,把参数的管理放到各个模块中,各个模块只需要根据本模块的需要申明参数,实现参数的模块化(移除此模块也移除了此模块的参数);
  2. 各个模块申明配置项时如同全新开发一样申明参数即可,同历史参数的兼容归配置模块算法实现;
  3. 各个模块如果未被授权,则不申明参数,通过减少参数增加系统的容量及并发,既功能少,并发高,让授权是一个加法操作;
  4. 申明参数时指定默认值,在客户端传参时未有对应参数时读取此参数时读到的值为默认值,以此实现对历史客户端的兼容(历史客户端与新版本后台字段有差异部分使用默认值代替,保证新后台可同老客户端适配);
  5. 申明参数时同时申明中文名、注释、可选值,即把注释写入配置,在配置导出时可自动对参数注释,实现文档源码化;
  6. 配置可以热导出,导出后的配置可热导入到任意版本的后台,配置模块可自动探测到变化,自动完成对象实例的增删改动作;
  7. 配置可以导出xml,json等格式,并支持xml,json的导入;
  8. 配置可导出非默认值部分字段,也能导入,实现瘦客户端编程(服务器可以集所有功能与一体,但针对具体的项目客户,可能只需要部分功能,可在完整客户端上正确配置对应项目需求的功能参数后导出参数,瘦客户端上只针对导出参数进行开发,减少参数可提高客户端的人性化程度);

小雉配置解决方案


      基于假设“小雉配置”采用面向属性的配置设计方式,把配置项分为节点型、模板、字符串、整型、浮点和二进制共6种数据类型,每种数据类型可设置多个条件组,以条件组内的所有条件为真此条件组为真,任何一个条件组为真则参数有效;       “小雉配置”采用C语言编写,可用于windows,linux,arm等平台,配置为单文件,本地可拷贝备份,远程可热导入导出xml和json,配置可承载数千参数(结构可类似xml任意层级嵌套)数十万级别的量(类比一张表有上千列,表可以容纳数十万行);

小雉配置数据类型


  1. 节点型类型       类似于xml中的a->b->c,其中b节点包含c,则b为节点型类型,且a下面有且只能有一个b;节点型类型可以作为节点型节点和模板节点的子类型,可以设置中文名、注释、条件判断,不能设置默认值,可选值; fs_Config_node_node_add //添加节点型参数 fs_Config_node_get_first //获取节点型参数
  2. 模板类型       类似于xml中的a->b->c,其中b节点包含c,如b固定且只有一个则b为节点型类型,如b可以是0到多个,则b为模板类型,申明模板实质是申明一个类,配置时在a下创建此类的多个实例(创建多少个实例,a下有多少个b,b的子节点与类的结构完全相同);模板类型主要用于同类型数据的管理(比如添加相机);模板类型可以作为节点型节点和模板节点的子类型,可以设置中文名、注释、条件判断、可创建实例的个数、时间控制参数(比如有两个模板实例,第一个模板实例在0-7点生效,另外一个在7-24时生效,实现参数随时间变化的控制),不能设置默认值,可选值; fs_Config_node_template_add //添加节点型参数 fs_Config_node_template__IO //获取节点型参数
  3. 字符串类型       字符串类型是一个储存字符串数据的节点类型;字符串类型可以作为节点型节点和模板节点的子类型,可以设置中文名、注释、条件判断、可设置值的个数、字符串长度、默认值、可选值; fs_Config_node_string_add //添加字符串类型参数 fs_Config_node_string_get_first //获取字符串类型参数
  4. 整型类型       整型类型是一个储存64位有符号整数的节点类型;整型类型可以作为节点型节点和模板节点的子类型,可以设置中文名、注释、条件判断、可设置值的个数、值的范围、默认值、可选值; fs_Config_node_integer_add //添加整型类型参数 fs_Config_node_integer_get_first //获取整型类型参数
  5. 浮点类型       浮点类型是一个储存64位浮点的节点类型;浮点类型可以作为节点型节点和模板节点的子类型,可以设置中文名、注释、条件判断、可设置值的个数、值的范围、默认值、可选值; fs_Config_node_float_add //添加浮点类型参数 fs_Config_node_float_get_first //获取浮点类型参数
  6. 二进制类型       二进制类型是一个储存任意数据类型的节点类型;二进制类型可以作为节点型节点和模板节点的子类型,可以设置中文名、注释、条件判断、可设置值的个数、数据长度范围、默认值、可选值; fs_Config_node_binary_add //添加二进制类型参数 fs_Config_node_binary_get_first //获取二进制类型参数

小雉配置的简单演示


int main() {
// 创建配置
FsConfig * const pConfig = fs_Config_new__IO();
// 创建一个节点型节点
void *const node = fs_Config_node_node_add(pConfig, pConfig, "node", "节点", "测试节点", 0, 0x7);
{
    /* 在node下创建一个字符串节点,节点可以设置2个值,长度为0到10个字节 */
    void *const testString = fs_Config_node_string_add(pConfig, node, "testString", "测试字符串", "测试字符串", 0, 0x7, 0, 10, 2);
    /* 为testString添加一个default1的默认值 */
    fs_Config_node_string_add_value(pConfig, testString, FsConfig_nodeValue_default, "default1", "默认值1", "默认值1");
    /* 为testString添加一个optiona1的可选值 */
    fs_Config_node_string_add_value(pConfig, testString, FsConfig_nodeValue_optional, "optiona1", "可选值1", "可选值1");
    /* 在node下创建一个整型节点,节点可以设置2个值,取值范围为0到666666 */
    void *const testInt = fs_Config_node_integer_add(pConfig, node, "testInt", "测试整数", "测试整数", FsConfig_nodeShowType_default, 0, 0x7, 0, 666666, 2);
    /* 为testInt添加一个0的默认值 */
    fs_Config_node_integer_add_value(pConfig, testInt, FsConfig_nodeValue_default, 0, "0", "0");
    /* 为testInt添加一个100的可选值 */
    fs_Config_node_integer_add_value(pConfig, testInt, FsConfig_nodeValue_optional, 100, "100", "100");
    /* 在node下创建一个浮点节点,节点可以设置3个值,取值范围为0.0到1.0 */
    void *const testFloat = fs_Config_node_float_add(pConfig, node, "testFloat", "测试浮点", "测试浮点", 0, 0x7, 0.0, 1.0, 3);
    /* 为testFloat添加一个0.0的默认值 */
    fs_Config_node_float_add_value(pConfig, testFloat, FsConfig_nodeValue_default, 0.0, "0.0", "0.0");
    /* 为testFloat添加一个1.0的可选值 */
    fs_Config_node_float_add_value(pConfig, testFloat, FsConfig_nodeValue_optional, 1.0, "1.0", "1.0");
    /* 在node下创建一个二进制节点,节点可以设置2个值,长度为0到100个字节 */
    void *const testBinary = fs_Config_node_binary_add(pConfig, node, "testBinary", "测试二进制", "测试二进制", 0, 0x7, 1, 100, 2);
    /* 为testBinary创建一个条件组 */
    void *const condition_testBinary = fs_Config_condition_group_add(pConfig, testBinary);
    /* 向condition_testBinary添加一个条件,相对于testBinary节点向上一级的父节点中查找testInt节点,在testInt的值为0时此值有效 */
    fs_Config_condition_add_static(pConfig, condition_testBinary, 1, "testInt", FsConfig_Condition_equal, "0");
}
// 创建一个可以创建100个实例的模板
void *const template = fs_Config_node_template_add(pConfig, pConfig, "testTemplate", "测试模板", NULL, NULL, "测试模板", NULL, NULL, NULL, 0, 0x7, 100);
{
    /* 在template下创建一个字符串节点,节点可以设置2个值,长度为0到10个字节 */
    void *const testString1 = fs_Config_node_string_add(pConfig, template, "testString1", "测试字符串1", "测试字符串1", 0, 0x7, 0, 10, 2);
    /* 为testString1添加一个默认值 */
    fs_Config_node_string_add_value(pConfig, testString1, FsConfig_nodeValue_default, "default1", "默认值1", "默认值1");
    /* 为testString1添加一个可选值 */
    fs_Config_node_string_add_value(pConfig, testString1, FsConfig_nodeValue_optional, "optiona1", "可选值1", "可选值1");
    /* 在template下创建一个字符串节点,节点可以设置2个值,长度为0到10个字节 */
    void *const testString2 = fs_Config_node_string_add(pConfig, template, "testString2", "测试字符串2", "测试字符串2", 0, 0x7, 0, 10, 2);
    /* 为testString2创建一个条件组 */
    void *const condition_testString2 = fs_Config_condition_group_add(pConfig, testString2);
    /* 向condition_testString2添加一个条件,相对于testString2节点向上两级的父节点中查找node节点,再在node节点中查找testInt节电,在testInt的值为0时此值有效 */
    fs_Config_condition_add_static(pConfig, condition_testString2, 2, "node testInt", FsConfig_Condition_equal, "0");
}
// 创建一个可以支持时间控制模板
void *const testTemplateTimControl = fs_Config_node_template_add(pConfig, pConfig, "testTemplateTimControl", "测试时间控制模板", NULL, NULL, "测试时间控制模板", NULL, NULL, "timerControl", 0, 0x7, 100);
{
    {
        void *const pNode = fs_Config_node_string_add(pConfig, testTemplateTimControl, "timerControl", "有效时间", "有效时间,时区+时间区间", 0, 0x7, 24, 33, 2);
        fs_Config_node_string_add_value(pConfig, pNode, FsConfig_nodeValue_default, "+08 01-01/00:00:00 12-31/23:59:59", "+08 01-01/00:00:00 12-31/23:59:59", "每年");
        fs_Config_node_string_add_value(pConfig, pNode, FsConfig_nodeValue_optional, "+08 00-01/00:00:00 00-31/23:59:59", "+08 00-01/00:00:00 00-31/23:59:59", "每月");
        fs_Config_node_string_add_value(pConfig, pNode, FsConfig_nodeValue_optional, "+08 00-00/00:00:00 00-00/23:59:59", "+08 00-00/00:00:00 00-00/23:59:59", "每天");
        fs_Config_node_string_add_value(pConfig, pNode, FsConfig_nodeValue_optional, "+08 00-00/24:00:00 00-00/24:59:59", "+08 00-00/24:00:00 00-00/24:59:59", "每时");
        fs_Config_node_string_add_value(pConfig, pNode, FsConfig_nodeValue_optional, "+08 00-00/24:60:00 00-00/24:60:59", "+08 00-00/24:60:00 00-00/24:60:59", "每分");
        fs_Config_node_string_add_value(pConfig, pNode, FsConfig_nodeValue_optional, "+08 1/00:00:00 7/23:59:59", "+08 1/00:00:00 7/23:59:59", "每周");
    }
    /* 在template下创建一个字符串节点,节点可以设置2个值,长度为0到10个字节 */
    void *const testString1 = fs_Config_node_string_add(pConfig, testTemplateTimControl, "testString1", "测试字符串1", "测试字符串1", 0, 0x7, 0, 10, 2);
    /* 为testString1添加一个默认值 */
    fs_Config_node_string_add_value(pConfig, testString1, FsConfig_nodeValue_default, "default1", "默认值1", "默认值1");
    /* 为testString1添加一个可选值 */
    fs_Config_node_string_add_value(pConfig, testString1, FsConfig_nodeValue_optional, "optiona1", "可选值1", "可选值1");
    /* 在template下创建一个字符串节点,节点可以设置2个值,长度为0到10个字节 */
    void *const testString2 = fs_Config_node_string_add(pConfig, testTemplateTimControl, "testString2", "测试字符串2", "测试字符串2", 0, 0x7, 0, 10, 2);
    /* 为testString2创建一个条件组 */
    void *const condition_testString2 = fs_Config_condition_group_add(pConfig, testString2);
    /* 向condition_testString2添加一个条件,相对于testString2节点向上两级的父节点中查找node节点,再在node节点中查找testInt节电,在testInt的值为0时此值有效 */
    fs_Config_condition_add_static(pConfig, condition_testString2, 2, "node testInt", FsConfig_Condition_equal, "0");
}
// 把配置保存到文件,可使用小雉配置工具打开编辑
// 项目中可把配置发送给客户端
fs_Config_save_to_file_direct(pConfig, "test.cfg");
/* 定义一个xml模拟历史数据导入 */
{
    const char *str = "<testTemplate><testString1>sss1</testString1></testTemplate>"
            "<testTemplate><testString2>ssss2</testString2></testTemplate>"
            "<node><testInt>30</testInt><testFloat>0.5</testFloat></node>";
    FsXml *pXml = fs_Xml_new_from_string__IO(str, NULL);
    fs_Xml_analyzeAll(pXml, (struct FsXml_node*) pXml, NULL);
    FsEbml *pEbml1 = fs_Ebml_new_from_Xml__IO(pXml);
    fs_Xml_delete__OI(pXml, NULL);
    fs_Config_import_onlyData((FsEbml*) pConfig, (struct FsEbml_node*) pConfig, (struct FsEbml_node*) pConfig, (FsEbml*) pEbml1, (struct FsEbml_node*) pEbml1, NULL);
    fs_Ebml_delete__OI(pEbml1, NULL);
}
// 当前pConfig已包含导入的数据,可存盘
fs_Config_save_to_file_direct(pConfig, "test1.cfg");
// 读取历史的配置文件"test1.cfg",按目前在申明导入到pConfig中
{
    FsConfig * const pConfig1 = fs_Config_new_from_file__IO("test1.cfg", NULL);
    fs_Config_import_onlyData((FsEbml*) pConfig, (struct FsEbml_node*) pConfig, (struct FsEbml_node*) pConfig, (FsEbml*) pConfig1, (struct FsEbml_node*) pConfig1, NULL);
    fs_Config_delete__OI(pConfig1, NULL);
}
/* 把pConfig导出为json */
FsObjectBase * const pObjectBase = fs_Config_export_objectBase__IO(pConfig, FsConfig_ExportType_json_export, sizeof (FsObjectBase), 0, NULL);
printf("%s\n", pObjectBase->data);
/* 打印数据为:
 * {
 *     "node":{
 *         "testString":"default1",
 *         "testInt":"30",
 *         "testFloat":"0.500000",
 *         "testBinary":""
 *     },
 *     "testTemplate":[{
 *         "testString1":"sss1",
 *         "testString2":""
 *     },{
 *         "testString1":"default1",
 *         "testString2":"ssss2"
 *     }],
 *    "testTemplateTimControl":[{
 *        "timerControl":"+08 01-01/00:00:00 1-1/23:59:59",
 *        "testString1":"default1",
 *         "testString2":"tttt2"
 *    },{
 *        "timerControl":"+08 1/00:00:00 7/23:59:59",
 *        "testString1":"default1",
 *        "testString2":"tttt7"
 *    }]
 * }
 */
/* 读取node testInt的值,打印结果为testInt=30 */
printf("testInt=%lld\n", fs_Config_node_integer_get_first(pConfig, pConfig, pConfig, "node testInt", 0, NULL));
/* 读取node testFloat的值,打印结果为testFloat=0.500000 */
printf("testFloat=%lf\n", fs_Config_node_float_get_first(pConfig, pConfig, pConfig, "node testFloat", 0, NULL));
/* 读取testTemplateTimControl模板实例子,每年1月1日至1月31日打印结果为testTemplateTimControl Count=2,其余时候打印结果为testTemplateTimControl Count=1 */
const void *testTemplateTimControl0 = pConfig;
FsObjectList * const list = fs_Config_node_template__IO(pConfig, &testTemplateTimControl0, pConfig, 3, NULL, 0, "testTemplateTimControl");
printf("testTemplateTimControl Count=%lu\n", list != NULL ? list->nodeCount : 0);
if (list)fs_ObjectList_delete__OI(list);
pObjectBase->_delete(pObjectBase);
fs_Config_delete__OI(pConfig, NULL);
return 0;
}

      代码生成了"test.cfg"和"test1.cfg"两份配置文件,可在http://www.feitianzhi.com/boke/index.php/ziyuanxiazai.html页面下载"小雉系统工具"打开配置文件,该项目上传的"含有上千字段的综合配置演示实例.cfg"为"小雉视频系统"使用该配置模块创建的配置文件,也可以使用"小雉系统工具"打开编辑;

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