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code/go-project/base-farmework/configs/app/config.go

@@ -0,0 +1,40 @@
+package app
+
+import (
+	"github.com/spf13/viper"
+	"time"
+)
+
+type ServerConfig struct {
+	Port int
+}
+
+type JWTConfig struct {
+	Secret string
+	Expiry time.Duration
+}
+
+var (
+	Server ServerConfig
+	JWT    JWTConfig
+)
+
+func InitAppConfig(configPath string) (error, error) {
+	v := viper.New()
+	v.SetConfigFile(configPath)
+	v.SetConfigType("yaml")
+
+	if err := v.ReadInConfig(); err != nil {
+		return err, nil
+	}
+
+	if err := v.UnmarshalKey("server", &Server); err != nil {
+		return err, nil
+	}
+
+	if err := v.UnmarshalKey("jwt", &JWT); err != nil {
+		return err, nil
+	}
+
+	return nil, nil
+}

code/go-project/base-farmework/configs/app/config.yaml

@@ -0,0 +1,5 @@
+server:
+  port: 8082
+jwt:
+  secret: 3Bde3BGEbYqtqyEUzW3ry8jKFcaPH17fRmTmqE7MDr05Lwj95uruRKrrkb44TJ4s
+  expiry: 43200 # 12 * 60 * 60 秒过期

code/go-project/base-farmework/configs/app/db.go

@@ -0,0 +1,80 @@
+package app
+
+import (
+	"fmt"
+	"log"
+	"sync"
+
+	"github.com/fsnotify/fsnotify"
+	"github.com/spf13/viper"
+)
+
+// DBConfig 数据库单个配置结构
+type DBConfig struct {
+	Host     string
+	Port     int
+	Username string
+	Password string
+	Dbname   string
+}
+
+// dbConfigs 全局变量，存放所有数据库配置，key为配置名，如 test1, test2
+var (
+	dbConfigs map[string]DBConfig
+	mu        sync.RWMutex
+	v         *viper.Viper
+)
+
+// InitDBConfig 初始化并加载 db.yaml 配置，同时启动监听
+func InitDBConfig(configPath string) error {
+	v = viper.New()
+	v.SetConfigFile(configPath)
+	v.SetConfigType("yaml")
+
+	if err := v.ReadInConfig(); err != nil {
+		return fmt.Errorf("读取数据库配置失败: %w", err)
+	}
+
+	if err := unmarshalConfigs(); err != nil {
+		return err
+	}
+
+	// 监听配置文件变化
+	v.WatchConfig()
+	v.OnConfigChange(func(e fsnotify.Event) {
+		log.Printf("数据库配置文件发生变化: %s\n", e.Name)
+		if err := unmarshalConfigs(); err != nil {
+			log.Printf("重新加载数据库配置失败: %v\n", err)
+		} else {
+			log.Println("数据库配置已更新")
+		}
+	})
+
+	return nil
+}
+
+// unmarshalConfigs 解析配置到全局变量，内部加锁保证并发安全
+func unmarshalConfigs() error {
+	mu.Lock()
+	defer mu.Unlock()
+
+	temp := make(map[string]DBConfig)
+	if err := v.Unmarshal(&temp); err != nil {
+		return fmt.Errorf("解析数据库配置失败: %w", err)
+	}
+	dbConfigs = temp
+	return nil
+}
+
+// GetDBConfigs 并发安全地返回当前的所有数据库配置副本
+func GetDBConfigs() map[string]DBConfig {
+	mu.RLock()
+	defer mu.RUnlock()
+
+	// 返回一份拷贝，避免外部修改内部数据
+	res := make(map[string]DBConfig, len(dbConfigs))
+	for k, v := range dbConfigs {
+		res[k] = v
+	}
+	return res
+}

code/go-project/base-farmework/configs/app/db.yaml

@@ -0,0 +1,12 @@
+test1:
+  host: 127.0.0.1
+  port: 5432
+  username: admin
+  password: 123456
+  dbname: test1
+test2:
+  host: 127.0.0.1
+  port: 5432
+  username: admin
+  password: 123456
+  dbname: test1