feat: 配置模块（配置文件，配置解析，全局变量初始化）

Author: minibear2333

README.md

@@ -8,7 +8,18 @@ golang写的博客系统（Go 语言编程之旅第二章的练习）
 
 ### 功能与目录
 
-|功能|目录|commit id|备注|
-|:---|:---|:---|:---|
-|数据库与model|[scripts/init.sql](scripts/init.sql)、[internal/model](internal/model)|[9c23f238a89208d80f5a7e4892091b6baad846fb](https://github.com/golang-minibear2333/gin-blog/commit/9c23f238a89208d80f5a7e4892091b6baad846fb)|创建数据库脚本与model|
-|路由|[internal/routers](internal/routers)|[9fc61621bde26e3181a0c64d87aa1f7c8f758a5c](https://github.com/golang-minibear2333/gin-blog/commit/9fc61621bde26e3181a0c64d87aa1f7c8f758a5c)|新增router和controller|
+见 [CHANGELOG.md](CHANGELOG.md)
+
+### 库
+
+gin框架: Go 编写的一个 HTTP Web 框架,除了快以外，还具备小巧、精美且易用的特性，目前广受 Go 语言开发者的喜爱，是最流行的 HTTP Web 框架
+
+```shell
+go get -u github.com/gin-gonic/gin@v1.6.3
+```
+
+配置管理
+
+```shell
+go get -u github.com/spf13/viper@v1.4.0
+```

configs/config.yaml

@@ -0,0 +1,25 @@
+#  Server：服务配置，设置 gin 的运行模式、默认的 HTTP 监听端口、允许读取和写入的最大持续时间。
+Server:
+  RunMode: debug
+  HttpPort: 8000
+  ReadTimeout: 60
+  WriteTimeout: 60
+#  App：应用配置，设置默认每页数量、所允许的最大每页数量以及默认的应用日志存储路径。
+App:
+  DefaultPageSize: 10
+  MaxPageSize: 100
+  LogSavePath: storage/logs
+  LogFileName: app
+  LogFileExt: .log
+#  Database：数据库配置，主要是连接实例所必需的基础参数。
+Database:
+  DBType: mysql
+  Username: blog_service  # 填写你的数据库账号
+  Password: blog_service  # 填写你的数据库密码
+  Host: 127.0.0.1:3306
+  DBName: blog_service
+  TablePrefix: blog_
+  Charset: utf8
+  ParseTime: True
+  MaxIdleConns: 10
+  MaxOpenConns: 30

global/setting.go

@@ -0,0 +1,9 @@
+package global
+
+import "github.com/golang-minibear2333/gin-blog/pkg/setting"
+
+var (
+	ServerSetting   *setting.ServerSettingS
+	AppSetting      *setting.AppSettingS
+	DatabaseSetting *setting.DatabaseSettingS
+)

go.mod

@@ -3,14 +3,23 @@ module github.com/golang-minibear2333/gin-blog
 go 1.14
 
 require (
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/gin-gonic/gin v1.6.3
 	github.com/go-playground/validator/v10 v10.6.1 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/json-iterator/go v1.1.11 // indirect
 	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/magiconair/properties v1.8.5 // indirect
 	github.com/mattn/go-isatty v0.0.13 // indirect
+	github.com/mitchellh/mapstructure v1.4.1 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/pelletier/go-toml v1.9.2 // indirect
+	github.com/spf13/afero v1.6.0 // indirect
+	github.com/spf13/cast v1.3.1 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/viper v1.4.0
 	github.com/ugorji/go v1.2.6 // indirect
 	golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a // indirect
 	golang.org/x/sys v0.0.0-20210611083646-a4fc73990273 // indirect

go.sum

@@ -2,28 +2,53 @@ package main
 
 import (
 	"github.com/gin-gonic/gin"
+	"github.com/golang-minibear2333/gin-blog/global"
 	"github.com/golang-minibear2333/gin-blog/internal/routers"
+	"github.com/golang-minibear2333/gin-blog/pkg/setting"
+	"log"
 	"net/http"
 	"time"
 )
 
+func init() {
+	// 配置初始化，读取到全局model里面
+	err := setupSetting()
+	if err != nil {
+		log.Fatalf("init.setupSetting err: %v", err)
+	}
+}
 func main() {
+	gin.SetMode(global.ServerSetting.RunMode)
 	router := routers.NewRouter()
 	s := &http.Server{
-		Addr:           ":8080",
+		Addr:           ":" + global.ServerSetting.HttpPort,
 		Handler:        router,
-		ReadTimeout:    10 * time.Second,
-		WriteTimeout:   10 * time.Second,
+		ReadTimeout:    global.ServerSetting.ReadTimeout,
+		WriteTimeout:   global.ServerSetting.WriteTimeout,
 		MaxHeaderBytes: 1 << 20,
 	}
 	s.ListenAndServe()
 }
 
-// 仅仅是hello测试
-func helloWorld() {
-	r := gin.Default()
-	r.GET("/ping", func(c *gin.Context) {
-		c.JSON(200, gin.H{"message": "pong"})
-	})
-	r.Run()
+func setupSetting() error {
+	setting, err := setting.NewSetting()
+	if err != nil {
+		return err
+	}
+	err = setting.ReadSection("Server", &global.ServerSetting)
+	if err != nil {
+		return err
+	}
+	err = setting.ReadSection("App", &global.AppSetting)
+	if err != nil {
+		return err
+	}
+	err = setting.ReadSection("Database", &global.DatabaseSetting)
+	if err != nil {
+		return err
+	}
+
+	global.ServerSetting.ReadTimeout *= time.Second
+	global.ServerSetting.WriteTimeout *= time.Second
+	return nil
 }

main.go

@@ -0,0 +1,41 @@
+// Package setting 配置文件model
+package setting
+
+import "time"
+
+type ServerSettingS struct {
+	RunMode      string
+	HttpPort     string
+	ReadTimeout  time.Duration
+	WriteTimeout time.Duration
+}
+
+type AppSettingS struct {
+	DefaultPageSize int
+	MaxPageSize     int
+	LogSavePath     string
+	LogFileName     string
+	LogFileExt      string
+}
+
+type DatabaseSettingS struct {
+	DBType       string
+	UserName     string
+	Password     string
+	Host         string
+	DBName       string
+	TablePrefix  string
+	Charset      string
+	ParseTime    bool
+	MaxIdleConns int
+	MaxOpenConns int
+}
+
+func (s *Setting) ReadSection(k string, v interface{}) error {
+	err := s.vp.UnmarshalKey(k, v)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

pkg/setting/section.go

@@ -0,0 +1,23 @@
+package setting
+
+import "github.com/spf13/viper"
+
+type Setting struct {
+	vp *viper.Viper
+}
+
+// NewSetting 设置配置文件的信息
+func NewSetting() (*Setting, error) {
+	vp := viper.New()
+	vp.SetConfigName("config")
+	vp.AddConfigPath("configs/")
+	// 可以通过不断调用下面的函数，设置多个配置路径用于查找配置文件
+	//vp.AddConfigPath("etc/")
+	vp.SetConfigType("yaml")
+	err := vp.ReadInConfig()
+	if err != nil {
+		return nil, err
+	}
+
+	return &Setting{vp}, nil
+}