Go全家桶规划之二： GO依赖注入框架godi之六，实现BEAN注册容器、 自动注入, 工业级巨匠

 GO全家桶测试驱动学习

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gonats总体架构：

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开源代码：go1.20

ichub/godi

https://gitee.com/ichub/gonats.git

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使用技术GO元编程：goast解析tag 函数 imports 结构体等

使用goconfig处理配置文件viper有使用, 聚合根：

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定义结构体与成员：

package single

import (
    "gitee.com/ichub/goconfig/common/base/basedto"
    "gitee.com/ichub/goconfig/common/base/baseiface"
    "gitee.com/ichub/goconfig/common/ichublog"
    "gitee.com/ichub/godi/di/dimodel/multi"
    "github.com/sirupsen/logrus"
)

type SingleEntity struct {
    basedto.BaseEntitySingle

// 以下是依赖注入的示例
// 注入的对象可以是单例、绑定、新建、无注入
//auto  通过LoadBean()方法注入
MultiAuto   *multi.MultiEntity `godi:"auto"`
//bind  通过BindUp()方法注入
MultiBind   *multi.MultiEntity `godi:"bind"`
//new   通过New()方法注入
MultiNew    *multi.MultiEntity `godi:"new"`
//none  不注入
MultiNone   *multi.MultiEntity `godi:"none"`
//single  单例; 注入的对象为简单NEW
MultiSingle *multi.MultiEntity `godi:"single"`

    Id        int
    Name      string
}

// 注册一个成员加载函数
func (this *SingleEntity) Bind() {

    this.BindUp("MultiBind", multi.LoadMultiEntity)
        =》成员名称对应结构体加载函数}

func NewSingleEntity() *SingleEntity {
    var s = &SingleEntity{
       Name: "single",
    }
    s.InitProxy(s)
    return s
}

指定结构体structName生成注册与注入代码：测试用例

func (this *TestDiFactoySuite) Test002_MakeDiStru() {

    this.DiFactroy.Rootdir = fileutils.FindRootDirGoMod()
    this.DiFactroy.MakeDiStru("SingleEntity")

}

// 生成所有, 继承baseentity的结果: 已经有不再生成！
func (this *TestDiFactoySuite) Test003_MakeDiAll() {

    this.DiFactroy.MakeDiAll()

}

// 生成所有 继承baseentity的结果，强制执行
func (this *TestDiFactoySuite) Test004_MakeDiForce() {

    this.DiFactroy.MakeDiAllForce(true)

}

// 指定一个文件生成
func (this *TestDiFactoySuite) Test001_MakeDiFile() {

    this.DiFactroy.MakeDiFile("./difactroy/di_factroy.go")
    logrus.Info(CurrentFile())

}

// 指定结构体structName生成注册与注入代码
func (this *TestDiFactoySuite) Test002_MakeDiStru() {

    this.DiFactroy.Rootdir = fileutils.FindRootDirGoMod()
    this.DiFactroy.MakeDiStru("SingleEntity")

}

同目录生成注册代码

package single

import (
    "gitee.com/ichub/goconfig/common/base/baseiface"
    "gitee.com/ichub/goconfig/common/basedi"
    "gitee.com/ichub/godi/di/dimodel/multi"
    "github.com/sirupsen/logrus"
)

/*
    @Title  文件名称: single_entity_init.go
    @Desp   描述:    自动注册注入

    @Author 作者: leijmdas@163.com 时间(2024-04-23 01:59:02)
    @Update 作者: leijmdas@163.com 时间(2024-04-23 01:59:02)
*/

const single_nameSingleEntity = "SingleEntity"

// init register load
func init() {
    registerBeanSingleEntity()
}

// register SingleEntity
func registerBeanSingleEntity() {
    basedi.RegisterLoadBean(single_nameSingleEntity, LoadSingleEntity)
}

func FindBeanSingleEntity() *SingleEntity {
    return basedi.FindBean(single_nameSingleEntity).(*SingleEntity)
}

func LoadSingleEntity() baseiface.ISingleton {
    var s = NewSingleEntity()
    InjectSingleEntity(s)
    return s

}

func InjectSingleEntity(s *SingleEntity) {
   // tag `godi:"none"` 则不注入！

   // tag `godi:"auto"`
    s.MultiAuto = multi.FindBeanMultiEntity()
   // tag `godi:"new"`
    s.MultiNew = multi.NewMultiEntity()
  // tag `godi:"single"`
    s.MultiSingle = &multi.MultiEntity{}

   // tag `godi:"bind"` 通过绑定函数注入
    s.Bind()
    var find = s.FindBinding("MultiBind")
    if find != nil {
       logrus.Debug("find binded LoadBeanMultiEntity!")
       s.MultiBind = find().(*multi.MultiEntity)
    } else {
       s.MultiBind = &multi.MultiEntity{}
       logrus.Error("no binding LoadBeanMultiEntity!")
    }
    logrus.Debug("inject")
}

生成代码的文件信息json

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{
     "isBaseEntiyStruct": true,
     "fullPkg": "gitee.com/ichub/godi/di/dimodel/single",
     "ExistNewStruct": true,
     "NewStructName": "NewSingleEntity",
     "pkg_name": "single",
     "struct_name": "SingleEntity",
     "pathFile": "D:\\go-ichub\\go\\godi\\di\\dimodel\\single\\single_entity.go",
     "out_path": "./",
     "out_file": "",
     "importedLibs": [
          "gitee.com/ichub/goconfig/common/base/basedto",
          "gitee.com/ichub/goconfig/common/base/baseiface",
          "gitee.com/ichub/goconfig/common/ichublog",
          "gitee.com/ichub/godi/di/dimodel/multi",
          "github.com/sirupsen/logrus"
     ],
     "diInjects": {
          "BaseEntitySingle": {
               "injectMod": 3,
               "tag": "",
               "injectCode": "",
               "goType": "struct",
               "importLib": "",
               "memberName": "BaseEntitySingle",
               "memberType": "BaseEntitySingle",
               "pkgName": "basedto"
          },
          "Id": {
               "injectMod": 2,
               "tag": "",
               "injectCode": "",
               "goType": "int",
               "importLib": "",
               "memberName": "Id",
               "memberType": "int",
               "pkgName": ""
          },
          "MultiAuto": {
               "injectMod": 3,
               "tag": "auto",
               "injectCode": "s.MultiAuto = multi.FindBeanMultiEntity()",
               "goType": "struct",
               "importLib": "gitee.com/ichub/godi/di/dimodel/multi",
               "memberName": "MultiAuto",
               "memberType": "MultiEntity",
               "pkgName": "multi"
          },
          "MultiBind": {
               "injectMod": 5,
               "tag": "bind",
               "injectCode": "\n\ts.Bind()\n\tvar find = s.FindBinding(\"MultiBind\")\n\tif find != nil {\n\t\tlogrus.Debug(\"find binded LoadBeanMultiEntity!\")\n\t\ts.MultiBind  = find().(*multi.MultiEntity)\n\t} else {\n\t\ts.MultiBind  = \u0026multi.MultiEntity{}\n\t\tlogrus.Error(\"no binding LoadBeanMultiEntity!\")\n\t}",
               "goType": "struct",
               "importLib": "gitee.com/ichub/godi/di/dimodel/multi",
               "memberName": "MultiBind",
               "memberType": "MultiEntity",
               "pkgName": "multi"
          },
          "MultiNew": {
               "injectMod": 4,
               "tag": "new",
               "injectCode": "s.MultiNew = multi.NewMultiEntity()",
               "goType": "struct",
               "importLib": "gitee.com/ichub/godi/di/dimodel/multi",
               "memberName": "MultiNew",
               "memberType": "MultiEntity",
               "pkgName": "multi"
          },
          "MultiNone": {
               "injectMod": 2,
               "tag": "none",
               "injectCode": "",
               "goType": "struct",
               "importLib": "",
               "memberName": "MultiNone",
               "memberType": "MultiEntity",
               "pkgName": "multi"
          },
          "Name": {
               "injectMod": 2,
               "tag": "",
               "injectCode": "",
               "goType": "string",
               "importLib": "",
               "memberName": "Name",
               "memberType": "string",
               "pkgName": ""
          }
     },
     "force_build": false,
     "methodNames": [
          "Bind",
          "Autoload",
          "AutoInject",
          "Check"
     ],
     "fields": [
          "BaseEntitySingle",
          "MultiAuto",
          "MultiNew",
          "MultiBind",
          "MultiNone",
          "Id",
          "Name"
     ]
}

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用例位置

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 自动配置

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