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关于golang:学习笔记带你十天轻松搞定-Go-微服务系列三-用户服务

1、学习课程

带你十天轻松搞定 Go 微服务系列(三)

2、生成 user model 模型

在昨天代码目录 xxx/gonivinck/code 下

$ cd mall/service/user # 进入 mall/service/user 文件夹
$ vim model/user.sql #创立 sql 间接 copy 上面语句就行了 

sql 语句如下:

CREATE TABLE `user` (
  `id` bigint unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(255)  NOT NULL DEFAULT ''COMMENT' 用户姓名 ',
  `gender` tinyint(3) unsigned NOT NULL DEFAULT '0' COMMENT '用户性别',
  `mobile` varchar(255)  NOT NULL DEFAULT ''COMMENT' 用户电话 ',
  `password` varchar(255)  NOT NULL DEFAULT ''COMMENT' 用户明码 ',
  `create_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
  `update_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  UNIQUE KEY `idx_mobile_unique` (`mobile`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8mb4;

再运行模板生成命令

$ goctl model mysql ddl -src ./model/user.sql -dir ./model -c

有的人就会报错

Command 'goctl' not found, did you mean:

  command 'doctl' from snap doctl (v1.69.0+git2.8af78470)

See 'snap info <snapname>' for additional versions.

解决办法 :在宿主机未装置 goctl 是不能拜访的应用的,咱们进入 golang 容器应用就好了(前面有须要 goctl 都要进入容器应用 goctl)

1. 第一步

 $ docker ps | grep golang                   #查找 golang 容器信息 

执行后果:

这外面列出所有在运行的容器信息,第一项就是 CONTAINER ID,上面要用到

CONTAINER ID   IMAGE          COMMAND       ...  PORTS                    NAMES

2. 第二步

$ docker exec -it container-id  /bin/bash   #进入容器 默认进入到 /usr/src/code   可用 dir 查看目录 

这里的 container-id 就换成下面 CONTAINER ID 的信息,我这里是 13258ded6d62

执行后果:

3. 第三步

$ cd mall/service/user  # 进入 mall/service/user
$ goctl model mysql ddl -src ./model/user.sql -dir ./model -c   #done

当呈现 done,就证实执行胜利了

执行后果:

3、生成 user api 服务流程

3.1 创立 api 文件

$ vim api/user.api

3.2 编写 api 文件

type (
  // 用户登录
  LoginRequest {
    Mobile   string `json:"mobile"`
    Password string `json:"password"`
  }
  LoginResponse {
    AccessToken  string `json:"accessToken"`
    AccessExpire int64  `json:"accessExpire"`
  }
  // 用户登录

  // 用户注册
  RegisterRequest {
    Name     string `json:"name"`
    Gender   int64  `json:"gender"`
    Mobile   string `json:"mobile"`
    Password string `json:"password"`
  }
  RegisterResponse {
    Id     int64  `json:"id"`
    Name   string `json:"name"`
    Gender int64  `json:"gender"`
    Mobile string `json:"mobile"`
  }
  // 用户注册

  // 用户信息
  UserInfoResponse {
    Id     int64  `json:"id"`
    Name   string `json:"name"`
    Gender int64  `json:"gender"`
    Mobile string `json:"mobile"`
  }
  // 用户信息
)

service User {
  @handler Login
  post /api/user/login(LoginRequest) returns (LoginResponse)
  
  @handler Register
  post /api/user/register(RegisterRequest) returns (RegisterResponse)
}

@server(jwt: Auth)
service User {
  @handler UserInfo
  post /api/user/userinfo returns (UserInfoResponse)
}

3.3 运行模板生成命令

$ goctl api go -api ./api/user.api -dir ./api

4、生成 user rpc 服务

创立 proto 文件

$ vim rpc/user.proto

编写 proto 文件

syntax = "proto3";

package userclient;

option go_package = "user";

// 用户登录
message LoginRequest {
    string Mobile = 1;
    string Password = 2;
}
message LoginResponse {
    int64 Id = 1;
    string Name = 2;
    int64 Gender = 3;
    string Mobile = 4;
}
// 用户登录

// 用户注册
message RegisterRequest {
    string Name = 1;
    int64 Gender = 2;
    string Mobile = 3;
    string Password = 4;
}
message RegisterResponse {
    int64 Id = 1;
    string Name = 2;
    int64 Gender = 3;
    string Mobile = 4;
}
// 用户注册

// 用户信息
message UserInfoRequest {int64 Id = 1;}
message UserInfoResponse {
    int64 Id = 1;
    string Name = 2;
    int64 Gender = 3;
    string Mobile = 4;
}
// 用户信息

service User {rpc Login(LoginRequest) returns(LoginResponse);
    rpc Register(RegisterRequest) returns(RegisterResponse);
    rpc UserInfo(UserInfoRequest) returns(UserInfoResponse);
}

运行模板生成命令

$ goctl rpc proto -src ./rpc/user.proto -dir ./rpc

增加下载依赖包,回到 mall 我的项目根目录执行如下命令:

$ go mod tidy

5、编写 user rpc 服务

4.1 批改配置文件

批改 user.yaml 配置文件

$ vim rpc/etc/user.yaml

批改服务监听地址,端口号为 0.0.0.0:9000,Etcd 服务配置,Mysql 服务配置,CacheRedis 服务配置

Name: user.rpc
ListenOn: 0.0.0.0:9000

Etcd:
  Hosts:
  - etcd:2379
  Key: user.rpc

Mysql:
  DataSource: root:123456@tcp(mysql:3306)/mall?charset=utf8mb4&parseTime=true&loc=Asia%2FShanghai

CacheRedis:
- Host: redis:6379
  Type: node

4.2 增加 user model 依赖

增加 Mysql 服务配置,CacheRedis 服务配置的实例化

$ vim rpc/internal/config/config.go 
package config

import (
  "github.com/zeromicro/go-zero/core/stores/cache"
  "github.com/zeromicro/go-zero/zrpc"
)

type Config struct {
  zrpc.RpcServerConf

  Mysql struct {DataSource string}
  
  CacheRedis cache.CacheConf
}

注册服务上下文 user model 的依赖

$ vim rpc/internal/svc/servicecontext.go
package svc

import (
  "mall/service/user/model"
  "mall/service/user/rpc/internal/config"

  "github.com/zeromicro/go-zero/core/stores/sqlx"
)

type ServiceContext struct {
  Config config.Config
    
  UserModel model.UserModel
}

func NewServiceContext(c config.Config) *ServiceContext {conn := sqlx.NewMysql(c.Mysql.DataSource)
  return &ServiceContext{
    Config:    c,
    UserModel: model.NewUserModel(conn, c.CacheRedis),
  }
}

4.3 增加用户注册逻辑 Register

4.3.1 增加明码加密工具

在根目录 common 新建 crypt 工具库,此工具办法次要用于明码的加密解决。

$ mkdir cryptx
$ cd cryptx
$ vim crypt.go
package cryptx

import (
  "fmt"

  "golang.org/x/crypto/scrypt"
)

func PasswordEncrypt(salt, password string) string {dk, _ := scrypt.Key([]byte(password), []byte(salt), 32768, 8, 1, 32)
  return fmt.Sprintf("%x", string(dk))
}

4.3.2 增加明码加密 Salt 配置

$ vim rpc/etc/user.yaml
Name: user.rpc
ListenOn: 0.0.0.0:9000

...

Salt: HWVOFkGgPTryzICwd7qnJaZR9KQ2i8xe
$ vim rpc/internal/config/config.go
package config

import (
  "github.com/zeromicro/go-zero/core/stores/cache"
  "github.com/zeromicro/go-zero/zrpc"
)

type Config struct {
  ...
  Salt string
}

4.3.3 增加用户注册逻辑

用户注册流程,先判断注册手机号是否曾经被注册,手机号未被注册,将用户信息写入数据库,用户明码须要进行加密存储。

$ vim rpc/internal/logic/registerlogic.go
package logic

import (
  "context"

  "mall/common/cryptx"
  "mall/service/user/model"
  "mall/service/user/rpc/internal/svc"
  "mall/service/user/rpc/user"

  "github.com/zeromicro/go-zero/core/logx"
  "google.golang.org/grpc/status"
)

type RegisterLogic struct {
  ctx    context.Context
  svcCtx *svc.ServiceContext
  logx.Logger
}

func NewRegisterLogic(ctx context.Context, svcCtx *svc.ServiceContext) *RegisterLogic {
  return &RegisterLogic{
    ctx:    ctx,
    svcCtx: svcCtx,
    Logger: logx.WithContext(ctx),
  }
}

func (l *RegisterLogic) Register(in *user.RegisterRequest) (*user.RegisterResponse, error) {
  // 判断手机号是否曾经注册
  _, err := l.svcCtx.UserModel.FindOneByMobile(in.Mobile)
  if err == nil {return nil, status.Error(100, "该用户已存在")
  }

  if err == model.ErrNotFound {

    newUser := model.User{
      Name:     in.Name,
      Gender:   in.Gender,
      Mobile:   in.Mobile,
      Password: cryptx.PasswordEncrypt(l.svcCtx.Config.Salt, in.Password),
    }

    res, err := l.svcCtx.UserModel.Insert(&newUser)
    if err != nil {return nil, status.Error(500, err.Error())
    }

    newUser.Id, err = res.LastInsertId()
    if err != nil {return nil, status.Error(500, err.Error())
    }

    return &user.RegisterResponse{
      Id:     newUser.Id,
      Name:   newUser.Name,
      Gender: newUser.Gender,
      Mobile: newUser.Mobile,
    }, nil

  }

  return nil, status.Error(500, err.Error())
}

4.4 增加用户登录逻辑 Login

用户登录流程,通过手机号查问判断用户是否是注册用户,如果是注册用户,须要将用户输出的明码进行加密与数据库中用户加密明码进行比照验证。

$ vim rpc/internal/logic/loginlogic.go
package logic

import (
  "context"

  "mall/common/cryptx"
  "mall/service/user/model"
  "mall/service/user/rpc/internal/svc"
  "mall/service/user/rpc/user"

  "github.com/zeromicro/go-zero/core/logx"
  "google.golang.org/grpc/status"
)

type LoginLogic struct {
  ctx    context.Context
  svcCtx *svc.ServiceContext
  logx.Logger
}

func NewLoginLogic(ctx context.Context, svcCtx *svc.ServiceContext) *LoginLogic {
  return &LoginLogic{
    ctx:    ctx,
    svcCtx: svcCtx,
    Logger: logx.WithContext(ctx),
  }
}

func (l *LoginLogic) Login(in *user.LoginRequest) (*user.LoginResponse, error) {
  // 查问用户是否存在
  res, err := l.svcCtx.UserModel.FindOneByMobile(in.Mobile)
  if err != nil {
    if err == model.ErrNotFound {return nil, status.Error(100, "用户不存在")
    }
    return nil, status.Error(500, err.Error())
  }

  // 判断明码是否正确
  password := cryptx.PasswordEncrypt(l.svcCtx.Config.Salt, in.Password)
  if password != res.Password {return nil, status.Error(100, "明码谬误")
  }

  return &user.LoginResponse{
    Id:     res.Id,
    Name:   res.Name,
    Gender: res.Gender,
    Mobile: res.Mobile,
  }, nil
}

4.5 增加用户信息逻辑 UserInfo

$ vim rpc/internal/logic/userinfologic.go
package logic

import (
  "context"

  "mall/service/user/model"
  "mall/service/user/rpc/internal/svc"
  "mall/service/user/rpc/user"

  "github.com/zeromicro/go-zero/core/logx"
  "google.golang.org/grpc/status"
)

type UserInfoLogic struct {
  ctx    context.Context
  svcCtx *svc.ServiceContext
  logx.Logger
}

func NewUserInfoLogic(ctx context.Context, svcCtx *svc.ServiceContext) *UserInfoLogic {
  return &UserInfoLogic{
    ctx:    ctx,
    svcCtx: svcCtx,
    Logger: logx.WithContext(ctx),
  }
}

func (l *UserInfoLogic) UserInfo(in *user.UserInfoRequest) (*user.UserInfoResponse, error) {
  // 查问用户是否存在
  res, err := l.svcCtx.UserModel.FindOne(in.Id)
  if err != nil {
    if err == model.ErrNotFound {return nil, status.Error(100, "用户不存在")
    }
    return nil, status.Error(500, err.Error())
  }

  return &user.UserInfoResponse{
    Id:     res.Id,
    Name:   res.Name,
    Gender: res.Gender,
    Mobile: res.Mobile,
  }, nil
}

6、编写 user api 服务

6.1 批改配置文件

批改 user.yaml 配置文件

$ vim api/etc/user.yaml

批改服务地址,端口号为 0.0.0.0:8000,Mysql 服务配置,CacheRedis 服务配置,Auth 验证配置

Name: User
Host: 0.0.0.0
Port: 8000

Mysql:
  DataSource: root:123456@tcp(mysql:3306)/mall?charset=utf8mb4&parseTime=true&loc=Asia%2FShanghai

CacheRedis:
- Host: redis:6379
  Pass:
  Type: node

Auth:
  AccessSecret: uOvKLmVfztaXGpNYd4Z0I1SiT7MweJhl
  AccessExpire: 86400

6.2 增加 user rpc 依赖

增加 user rpc 服务配置

$ vim api/etc/user.yaml
Name: User
Host: 0.0.0.0
Port: 8000

......

UserRpc:
  Etcd:
    Hosts:
    - etcd:2379
    Key: user.rpc

增加 user rpc 服务配置的实例化

$ vim api/internal/config/config.go
package config

import (
  "github.com/zeromicro/go-zero/rest"
  "github.com/zeromicro/go-zero/zrpc"
)

type Config struct {
  rest.RestConf

  Auth struct {
    AccessSecret string
    AccessExpire int64
  }

  UserRpc zrpc.RpcClientConf
}

注册服务上下文 user rpc 的依赖

$ vim api/internal/svc/servicecontext.go
package svc

import (
  "mall/service/user/api/internal/config"
  "mall/service/user/rpc/userclient"

  "github.com/zeromicro/go-zero/zrpc"
)

type ServiceContext struct {
  Config config.Config
    
  UserRpc userclient.User
}

func NewServiceContext(c config.Config) *ServiceContext {
  return &ServiceContext{
    Config:  c,
    UserRpc: userclient.NewUser(zrpc.MustNewClient(c.UserRpc)),
  }
}

6.3 增加用户注册逻辑 Register

$ vim api/internal/logic/registerlogic.go
package logic

import (
  "context"

  "mall/service/user/api/internal/svc"
  "mall/service/user/api/internal/types"
  "mall/service/user/rpc/userclient"

  "github.com/zeromicro/go-zero/core/logx"
)

type RegisterLogic struct {
  logx.Logger
  ctx    context.Context
  svcCtx *svc.ServiceContext
}

func NewRegisterLogic(ctx context.Context, svcCtx *svc.ServiceContext) RegisterLogic {
  return RegisterLogic{Logger: logx.WithContext(ctx),
    ctx:    ctx,
    svcCtx: svcCtx,
  }
}

func (l *RegisterLogic) Register(req types.RegisterRequest) (resp *types.RegisterResponse, err error) {
  res, err := l.svcCtx.UserRpc.Register(l.ctx, &userclient.RegisterRequest{
    Name:     req.Name,
    Gender:   req.Gender,
    Mobile:   req.Mobile,
    Password: req.Password,
  })
  if err != nil {return nil, err}

  return &types.RegisterResponse{
    Id:     res.Id,
    Name:   res.Name,
    Gender: res.Gender,
    Mobile: res.Mobile,
  }, nil
}

6.4 增加用户登录逻辑 Login

6.4.1 增加 JWT 工具

在根目录 common 新建 jwtx 工具库,用于生成用户 token。

$ vim common/jwtx/jwt.go
package jwtx

import "github.com/golang-jwt/jwt"

func GetToken(secretKey string, iat, seconds, uid int64) (string, error) {claims := make(jwt.MapClaims)
  claims["exp"] = iat + seconds
  claims["iat"] = iat
  claims["uid"] = uid
  token := jwt.New(jwt.SigningMethodHS256)
  token.Claims = claims
  return token.SignedString([]byte(secretKey))
}

6.4.2 增加用户登录逻辑

通过调用 user rpc 服务进行登录验证,登录胜利后,应用用户信息生成对应的 token 以及 token 的有效期。

$ vim api/internal/logic/loginlogic.go
package logic

import (
  "context"
  "time"

  "mall/common/jwtx"
  "mall/service/user/api/internal/svc"
  "mall/service/user/api/internal/types"
  "mall/service/user/rpc/userclient"

  "github.com/zeromicro/go-zero/core/logx"
)

type LoginLogic struct {
  logx.Logger
  ctx    context.Context
  svcCtx *svc.ServiceContext
}

func NewLoginLogic(ctx context.Context, svcCtx *svc.ServiceContext) LoginLogic {
  return LoginLogic{Logger: logx.WithContext(ctx),
    ctx:    ctx,
    svcCtx: svcCtx,
  }
}

func (l *LoginLogic) Login(req types.LoginRequest) (resp *types.LoginResponse, err error) {
  res, err := l.svcCtx.UserRpc.Login(l.ctx, &userclient.LoginRequest{
    Mobile:   req.Mobile,
    Password: req.Password,
  })
  if err != nil {return nil, err}

  now := time.Now().Unix()
  accessExpire := l.svcCtx.Config.Auth.AccessExpire

  accessToken, err := jwtx.GetToken(l.svcCtx.Config.Auth.AccessSecret, now, accessExpire, res.Id)
  if err != nil {return nil, err}

  return &types.LoginResponse{
    AccessToken:  accessToken,
    AccessExpire: now + accessExpire,
  }, nil
}

6.5 增加用户信息逻辑 UserInfo

$ vim api/internal/logic/userinfologic.go
package logic

import (
  "context"
  "encoding/json"

  "mall/service/user/api/internal/svc"
  "mall/service/user/api/internal/types"
  "mall/service/user/rpc/userclient"

  "github.com/zeromicro/go-zero/core/logx"
)

type UserInfoLogic struct {
  logx.Logger
  ctx    context.Context
  svcCtx *svc.ServiceContext
}

func NewUserInfoLogic(ctx context.Context, svcCtx *svc.ServiceContext) UserInfoLogic {
  return UserInfoLogic{Logger: logx.WithContext(ctx),
    ctx:    ctx,
    svcCtx: svcCtx,
  }
}

func (l *UserInfoLogic) UserInfo() (resp *types.UserInfoResponse, err error) {uid, _ := l.ctx.Value("uid").(json.Number).Int64()
  res, err := l.svcCtx.UserRpc.UserInfo(l.ctx, &userclient.UserInfoRequest{Id: uid,})
  if err != nil {return nil, err}

  return &types.UserInfoResponse{
    Id:     res.Id,
    Name:   res.Name,
    Gender: res.Gender,
    Mobile: res.Mobile,
  }, nil
}

通过 l.ctx.Value(“uid”) 可获取 jwt token 中自定义的参数

7、启动 user rpc 服务

提醒:启动服务须要在 golang 容器中启动

$ cd mall/service/user/rpc
$ go run user.go -f etc/user.yaml

可能会报上面的错

internal/logic/loginlogic.go:6:3: package mall/common/cryptx imports golang.org/x/crypto/scrypt from implicitly required module; to add missing requirements, run:
    go get golang.org/x/crypto@v0.0.0-20210920023735-84f357641f63

这是包没导全,进入 mall 目录 go mod tidy 一下,再从新

$ go run user.go -f etc/user.yaml

看到 Starting rpc server at 127.0.0.1:9000… 就是启动胜利了

8、启动 user api 服务

提醒:启动服务须要在 golang 容器中启动,且后面的 rpc 服务不能敞开,不然会报错,如下所示:

2022/03/07 12:57:18 {"@timestamp":"2022-03-07T12:57:18.642+08:00","level":"error","content":"discovbuilder.go:33 bad resolver state"}
2022/03/07 12:57:21 rpc dial: discov://etcd:2379/user.rpc, error: context deadline exceeded, make sure rpc service "user.rpc" is already started
exit status 1

陆续输出如下命令:

$ cd mall/service/user/api
$ go run user.go -f etc/user.yaml

看到 Starting server at 0.0.0.0:8000… 就是启动胜利了

退出移动版