go17/vblog/apps/user/impl/impl.go

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package impl
import (
"context"
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"github.com/infraboard/mcube/v2/ioc/config/datasource"
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"gitlab.com/go-course-project/go17/vblog/apps/user"
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"golang.org/x/crypto/bcrypt"
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)
var UserService user.Service = &UserServiceImpl{}
// 定义一个struct, 用于实现 UserService就是刚才定义的接口
// 怎么才能判断这个结构体没有实现这个接口
type UserServiceImpl struct {
}
// DescribeUser implements user.Service.
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func (u *UserServiceImpl) DescribeUser(ctx context.Context, in *user.DescribeUserRequest) (*user.User, error) {
query := datasource.DBFromCtx(ctx)
switch in.DescribeBy {
case user.DESCRIBE_BY_ID:
query = query.Where("id = ?", in.Value)
case user.DESCRIBE_BY_USERNAME:
query = query.Where("username = ?", in.Value)
}
ins := &user.User{}
if err := query.Take(ins).Error; err != nil {
return nil, err
}
return ins, nil
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}
// Registry implements user.Service.
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func (u *UserServiceImpl) Registry(ctx context.Context, in *user.RegistryRequest) (*user.User, error) {
ins, err := user.New(in)
if err != nil {
return nil, err
}
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// 明文密码保持到数据库,是不安全
// 对称加密/非对称, 解密
// 消息摘要, 无法还原
// 怎么知道用户的密码 比对hash 123 -> (xxx)
// md5 sha1/256/512, hmac, ...
// 结果固定
hashPass, err := bcrypt.GenerateFromPassword([]byte(in.Password), bcrypt.DefaultCost)
if err != nil {
return nil, err
}
ins.Password = string(hashPass)
if err := datasource.DBFromCtx(ctx).Create(ins).Error; err != nil {
return nil, err
}
// context.WithValue()
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// 无事务的模式
// datasource.DB().Transaction(func(tx *gorm.DB) error {
// ctx := datasource.WithTransactionCtx(ctx)
// // 1.
// svcA.Call(ctx)
// // 2.
// svcB.Call(ctx)
// // 3.
// svcC.Call(ctx)
// })
return ins, nil
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}
// ResetPassword implements user.Service.
func (u *UserServiceImpl) ResetPassword(context.Context, *user.ResetPasswordRequest) error {
panic("unimplemented")
}
// UnRegistry implements user.Service.
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func (u *UserServiceImpl) UnRegistry(ctx context.Context, in *user.UnRegistryRequest) {
// datasource.GetTransactionFromCtx(ctx)
// datasource.DB()
// datasource.DBFromCtx()
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panic("unimplemented")
}
// UpdatePassword implements user.Service.
func (u *UserServiceImpl) UpdatePassword(context.Context, *user.UpdatePasswordRequest) error {
panic("unimplemented")
}
// UpdateProfile implements user.Service.
func (u *UserServiceImpl) UpdateProfile(context.Context, *user.UpdateProfileRequest) (*user.User, error) {
panic("unimplemented")
}
// UpdateUserStatus implements user.Service.
func (u *UserServiceImpl) UpdateUserStatus(context.Context, *user.UpdateUserStatusRequest) (*user.User, error) {
panic("unimplemented")
}