学习笔记：带你十天轻松搞定 Go 微服务系列（五）- 订单服务

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    1、学习课程

    带你十天轻松搞定 Go 微服务系列（五）

    我们继续接着昨天的步骤，进入服务工作区

    $ cd mall/service/order

    2、 生成 order model 模型

    创建 sql 文件

    $ vim model/order.sql

    编写 sql 文件

    CREATE TABLE `order` (
 `id` bigint unsigned NOT NULL AUTO_INCREMENT,
 `uid` bigint unsigned NOT NULL DEFAULT '0' COMMENT '用户ID',
 `pid` bigint unsigned NOT NULL DEFAULT '0' COMMENT '产品ID',
 `amount` int(10) unsigned NOT NULL DEFAULT '0'  COMMENT '订单金额',
 `status` tinyint(3) unsigned NOT NULL DEFAULT '0' COMMENT '订单状态',
 `create_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
 `update_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
 PRIMARY KEY (`id`),
 KEY `idx_uid` (`uid`),
 KEY `idx_pid` (`pid`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8mb4;

    运行模板生成命令（注意在 golang 容器下运行）

    参考：Linux下部署go-zero，运行goctl model运行模板生成命令报错解决方法

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

    3、 生成 order api 服务

    创建 api 文件

    $ vim api/order.api

    编写 api 文件

    type (
 // 订单创建
 CreateRequest {
  Uid    int64 `json:"uid"`
  Pid    int64 `json:"pid"`
  Amount int64 `json:"amount"`
  Status int64 `json:"status"`
 }
 CreateResponse {
  Id int64 `json:"id"`
 }
 // 订单创建

 // 订单修改
 UpdateRequest {
  Id     int64 `json:"id"`
  Uid    int64 `json:"uid,optional"`
  Pid    int64 `json:"pid,optional"`
  Amount int64 `json:"amount,optional"`
  Status int64 `json:"status,optional"`
 }
 UpdateResponse {
 }
 // 订单修改

 // 订单删除
 RemoveRequest {
  Id int64 `json:"id"`
 }
 RemoveResponse {
 }
 // 订单删除

 // 订单详情
 DetailRequest {
  Id int64 `json:"id"`
 }
 DetailResponse {
  Id     int64 `json:"id"`
  Uid    int64 `json:"uid"`
  Pid    int64 `json:"pid"`
  Amount int64 `json:"amount"`
  Status int64 `json:"status"`
 }
 // 订单详情

 // 订单列表
 ListRequest {
  Uid int64 `json:"uid"`
 }
 ListResponse {
  Id     int64 `json:"id"`
  Uid    int64 `json:"uid"`
  Pid    int64 `json:"pid"`
  Amount int64 `json:"amount"`
  Status int64 `json:"status"`
 }
 // 订单列表
)

@server(
 jwt: Auth
)
service Order {
 @handler Create
 post /api/order/create(CreateRequest) returns (CreateResponse)
 
 @handler Update
 post /api/order/update(UpdateRequest) returns (UpdateResponse)
 
 @handler Remove
 post /api/order/remove(RemoveRequest) returns (RemoveResponse)
 
 @handler Detail
 post /api/order/detail(DetailRequest) returns (DetailResponse)
 
 @handler List
 post /api/order/list(ListRequest) returns (ListResponse)
}

    运行模板生成命令（注意在 golang 容器下运行）

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

    4、 生成 order rpc 服务

    创建 proto 文件

    $ vim rpc/order.proto

    编写 proto 文件

    syntax = "proto3";

package orderclient;

option go_package = "order";

// 订单创建
message CreateRequest {
    int64 Uid = 1;
    int64 Pid = 2;
    int64 Amount = 3;
    int64 Status = 4;
}
message CreateResponse {
    int64 id = 1;
}
// 订单创建

// 订单修改
message UpdateRequest {
    int64 id = 1;
    int64 Uid = 2;
    int64 Pid = 3;
    int64 Amount = 4;
    int64 Status = 5;
}
message UpdateResponse {
}
// 订单修改

// 订单删除
message RemoveRequest {
    int64 id = 1;
}
message RemoveResponse {
}
// 订单删除

// 订单详情
message DetailRequest {
    int64 id = 1;
}
message DetailResponse {
    int64 id = 1;
    int64 Uid = 2;
    int64 Pid = 3;
    int64 Amount = 4;
    int64 Status = 5;
}
// 订单详情

// 订单列表
message ListRequest {
    int64 uid = 1;
}
message ListResponse {
    repeated DetailResponse data = 1;
}
// 订单列表

// 订单支付
message PaidRequest {
    int64 id = 1;
}
message PaidResponse {
}
// 订单支付

service Order {
    rpc Create(CreateRequest) returns(CreateResponse);
    rpc Update(UpdateRequest) returns(UpdateResponse);
    rpc Remove(RemoveRequest) returns(RemoveResponse);
    rpc Detail(DetailRequest) returns(DetailResponse);
    rpc List(ListRequest) returns(ListResponse);
    rpc Paid(PaidRequest) returns(PaidResponse);
}

    运行模板生成命令（注意在 golang 容器下运行）

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

    5、 编写 order rpc 服务

    5.1 修改配置文件

    修改 order.yaml 配置文件

    $ vim rpc/etc/order.yaml

    修改服务监听地址，端口号为0.0.0.0:9002，Etcd 服务配置，Mysql 服务配置，CacheRedis 服务配置

    Name: order.rpc
ListenOn: 0.0.0.0:9002

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

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

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

    5.2 添加 order model 依赖

    添加 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 order model 的依赖

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

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

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

type ServiceContext struct {
 Config config.Config

 OrderModel model.OrderModel
}

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

    5.3 添加 user rpc，product rpc 依赖

    添加 user rpc, product rpc 服务配置

    $ vim rpc/etc/order.yaml
    Name: order.rpc
ListenOn: 0.0.0.0:9002
Etcd:
  Hosts:
  - etcd:2379
  Key: order.rpc
  
......

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

ProductRpc:
  Etcd:
    Hosts:
    - etcd:2379
    Key: product.rpc

    添加 user rpc, product rpc 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

 UserRpc    zrpc.RpcClientConf
 ProductRpc zrpc.RpcClientConf
}

    注册服务上下文 user rpc, product rpc 的依赖

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

import (
 "mall/service/order/model"
 "mall/service/order/rpc/internal/config"
 "mall/service/product/rpc/productclient"
 "mall/service/user/rpc/userclient"

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

type ServiceContext struct {
 Config config.Config

 OrderModel model.OrderModel

 UserRpc    userclient.User
 ProductRpc productclient.Product
}

func NewServiceContext(c config.Config) *ServiceContext {
 conn := sqlx.NewMysql(c.Mysql.DataSource)
 return &ServiceContext{
  Config:     c,
  OrderModel: model.NewOrderModel(conn, c.CacheRedis),
  UserRpc:    userclient.NewUser(zrpc.MustNewClient(c.UserRpc)),
  ProductRpc: productclient.NewProduct(zrpc.MustNewClient(c.ProductRpc)),
 }
}

    5.4 添加订单创建逻辑 Create

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

import (
 "context"

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

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

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

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

func (l *CreateLogic) Create(in *order.CreateRequest) (*order.CreateResponse, error) {
 // 查询用户是否存在
 _, err := l.svcCtx.UserRpc.UserInfo(l.ctx, &user.UserInfoRequest{
  Id: in.Uid,
 })
 if err != nil {
  return nil, err
 }

 // 查询产品是否存在
 productRes, err := l.svcCtx.ProductRpc.Detail(l.ctx, &product.DetailRequest{
  Id: in.Pid,
 })
 if err != nil {
  return nil, err
 }
 // 判断产品库存是否充足
 if productRes.Stock <= 0 {
  return nil, status.Error(500, "产品库存不足")
 }

 newOrder := model.Order{
  Uid:    in.Uid,
  Pid:    in.Pid,
  Amount: in.Amount,
  Status: 0,
 }
        // 创建订单
 res, err := l.svcCtx.OrderModel.Insert(&newOrder)
 if err != nil {
  return nil, status.Error(500, err.Error())
 }

 newOrder.Id, err = res.LastInsertId()
 if err != nil {
  return nil, status.Error(500, err.Error())
 }
        // 更新产品库存
 _, err = l.svcCtx.ProductRpc.Update(l.ctx, &product.UpdateRequest{
  Id:     productRes.Id,
  Name:   productRes.Name,
  Desc:   productRes.Desc,
                Stock:  productRes.Stock - 1,
  Amount: productRes.Amount,
  Status: productRes.Status,
 })
 if err != nil {
  return nil, err
 }

 return &order.CreateResponse{
  Id: newOrder.Id,
 }, nil
}

    5.5 添加订单详情逻辑 Detail

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

import (
 "context"

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

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

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

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

func (l *DetailLogic) Detail(in *order.DetailRequest) (*order.DetailResponse, error) {
 // 查询订单是否存在
 res, err := l.svcCtx.OrderModel.FindOne(in.Id)
 if err != nil {
  if err == model.ErrNotFound {
   return nil, status.Error(100, "订单不存在")
  }
  return nil, status.Error(500, err.Error())
 }

 return &order.DetailResponse{
  Id:     res.Id,
  Uid:    res.Uid,
  Pid:    res.Pid,
  Amount: res.Amount,
  Status: res.Status,
 }, nil
}

    5.6 添加订单更新逻辑 Update

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

import (
 "context"

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

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

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

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

func (l *UpdateLogic) Update(in *order.UpdateRequest) (*order.UpdateResponse, error) {
 // 查询订单是否存在
 res, err := l.svcCtx.OrderModel.FindOne(in.Id)
 if err != nil {
  if err == model.ErrNotFound {
   return nil, status.Error(100, "订单不存在")
  }
  return nil, status.Error(500, err.Error())
 }

 if in.Uid != 0 {
  res.Uid = in.Uid
 }
 if in.Pid != 0 {
  res.Pid = in.Pid
 }
 if in.Amount != 0 {
  res.Amount = in.Amount
 }
 if in.Status != 0 {
  res.Status = in.Status
 }

 err = l.svcCtx.OrderModel.Update(res)
 if err != nil {
  return nil, status.Error(500, err.Error())
 }

 return &order.UpdateResponse{}, nil
}

    5.7 添加订单删除逻辑 Remove

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

import (
 "context"

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

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

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

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

func (l *RemoveLogic) Remove(in *order.RemoveRequest) (*order.RemoveResponse, error) {
 // 查询订单是否存在
 res, err := l.svcCtx.OrderModel.FindOne(in.Id)
 if err != nil {
  if err == model.ErrNotFound {
   return nil, status.Error(100, "订单不存在")
  }
  return nil, status.Error(500, err.Error())
 }

 err = l.svcCtx.OrderModel.Delete(res.Id)
 if err != nil {
  return nil, status.Error(500, err.Error())
 }

 return &order.RemoveResponse{}, nil
}

    5.8 添加订单列表逻辑 List

    添加根据 uid 查询用户所有订单的 OrderModel 方法 FindAllByUid

    $ vim model/ordermodel.go
    package model

......

type (
 OrderModel interface {
  Insert(data *Order) (sql.Result, error)
  FindOne(id int64) (*Order, error)
  FindAllByUid(uid int64) ([]*Order, error)
  Update(data *Order) error
  Delete(id int64) error
 }

 ......
)

......

func (m *defaultOrderModel) FindAllByUid(uid int64) ([]*Order, error) {
 var resp []*Order

 query := fmt.Sprintf("select %s from %s where `uid` = ?", orderRows, m.table)
 err := m.QueryRowsNoCache(&resp, query, uid)

 switch err {
 case nil:
  return resp, nil
 case sqlc.ErrNotFound:
  return nil, ErrNotFound
 default:
  return nil, err
 }
}

......

    添加订单列表逻辑

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

import (
 "context"

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

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

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

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

func (l *ListLogic) List(in *order.ListRequest) (*order.ListResponse, error) {
 // 查询用户是否存在
 _, err := l.svcCtx.UserRpc.UserInfo(l.ctx, &user.UserInfoRequest{
  Id: in.Uid,
 })
 if err != nil {
  return nil, err
 }

 // 查询订单是否存在
 list, err := l.svcCtx.OrderModel.FindAllByUid(in.Uid)
 if err != nil {
  if err == model.ErrNotFound {
   return nil, status.Error(100, "订单不存在")
  }
  return nil, status.Error(500, err.Error())
 }

 orderList := make([]*order.DetailResponse, 0)
 for _, item := range list {
  orderList = append(orderList, &order.DetailResponse{
   Id:     item.Id,
   Uid:    item.Uid,
   Pid:    item.Pid,
   Amount: item.Amount,
   Status: item.Status,
  })
 }

 return &order.ListResponse{
  Data: orderList,
 }, nil
}

    5.9 添加订单支付逻辑 Paid

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

import (
 "context"

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

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

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

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

func (l *PaidLogic) Paid(in *order.PaidRequest) (*order.PaidResponse, error) {
 // 查询订单是否存在
 res, err := l.svcCtx.OrderModel.FindOne(in.Id)
 if err != nil {
  if err == model.ErrNotFound {
   return nil, status.Error(100, "订单不存在")
  }
  return nil, status.Error(500, err.Error())
 }

 res.Status = 1

 err = l.svcCtx.OrderModel.Update(res)
 if err != nil {
  return nil, status.Error(500, err.Error())
 }

 return &order.PaidResponse{}, nil
}

    6、 编写 order api 服务

    6.1 修改配置文件

    修改 order.yaml 配置文件

    $ vim api/etc/order.yaml

    修改服务地址，端口号为0.0.0.0:8002，Mysql 服务配置，CacheRedis 服务配置，Auth 验证配置

    Name: Order
Host: 0.0.0.0
Port: 8002

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

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

Auth:
  AccessSecret: uOvKLmVfztaXGpNYd4Z0I1SiT7MweJhl
  AccessExpire: 86400

    6.2 添加 order rpc 依赖

    添加 order rpc 服务配置

    $ vim api/etc/order.yaml
    Name: Order
Host: 0.0.0.0
Port: 8002

......

OrderRpc:
  Etcd:
    Hosts:
    - etcd:2379
    Key: order.rpc

    添加 order 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
 }

 OrderRpc 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/order/api/internal/config"
 "mall/service/order/rpc/orderclient"

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

type ServiceContext struct {
 Config config.Config

 OrderRpc orderclient.Order
}

func NewServiceContext(c config.Config) *ServiceContext {
 return &ServiceContext{
  Config:   c,
  OrderRpc: orderclient.NewOrder(zrpc.MustNewClient(c.OrderRpc)),
 }
}

    6.3 添加订单创建逻辑 Create

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

import (
 "context"

 "mall/service/order/api/internal/svc"
 "mall/service/order/api/internal/types"
 "mall/service/order/rpc/orderclient"

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

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

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

func (l *CreateLogic) Create(req types.CreateRequest) (resp *types.CreateResponse, err error) {
 res, err := l.svcCtx.OrderRpc.Create(l.ctx, &orderclient.CreateRequest{
  Uid:    req.Uid,
  Pid:    req.Pid,
  Amount: req.Amount,
  Status: req.Status,
 })
 if err != nil {
  return nil, err
 }

 return &types.CreateResponse{
  Id: res.Id,
 }, nil
}

    6.4 添加订单详情逻辑 Detail

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

import (
 "context"

 "mall/service/order/api/internal/svc"
 "mall/service/order/api/internal/types"
 "mall/service/order/rpc/orderclient"

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

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

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

func (l *DetailLogic) Detail(req types.DetailRequest) (resp *types.DetailResponse, err error) {
 res, err := l.svcCtx.OrderRpc.Detail(l.ctx, &orderclient.DetailRequest{
  Id: req.Id,
 })
 if err != nil {
  return nil, err
 }

 return &types.DetailResponse{
  Id:     res.Id,
  Uid:    res.Uid,
  Pid:    res.Pid,
  Amount: res.Amount,
  Status: res.Status,
 }, nil
}

    6.5 添加订单更新逻辑 Update

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

import (
 "context"

 "mall/service/order/api/internal/svc"
 "mall/service/order/api/internal/types"
 "mall/service/order/rpc/orderclient"

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

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

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

func (l *UpdateLogic) Update(req types.UpdateRequest) (resp *types.UpdateResponse, err error) {
 _, err = l.svcCtx.OrderRpc.Update(l.ctx, &orderclient.UpdateRequest{
  Id:     req.Id,
  Uid:    req.Uid,
  Pid:    req.Pid,
  Amount: req.Amount,
  Status: req.Status,
 })
 if err != nil {
  return nil, err
 }

 return &types.UpdateResponse{}, nil
}

    6.6 添加订单删除逻辑 Remove

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

import (
 "context"

 "mall/service/order/api/internal/svc"
 "mall/service/order/api/internal/types"
 "mall/service/order/rpc/orderclient"

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

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

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

func (l *RemoveLogic) Remove(req types.RemoveRequest) (resp *types.RemoveResponse, err error) {
 _, err = l.svcCtx.OrderRpc.Remove(l.ctx, &orderclient.RemoveRequest{
  Id: req.Id,
 })
 if err != nil {
  return nil, err
 }

 return &types.RemoveResponse{}, nil
}

    6.7 添加订单列表逻辑 List

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

import (
 "context"

 "mall/service/order/api/internal/svc"
 "mall/service/order/api/internal/types"
 "mall/service/order/rpc/orderclient"

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

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

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

func (l *ListLogic) List(req types.ListRequest) (resp []*types.ListResponse, err error) {
 res, err := l.svcCtx.OrderRpc.List(l.ctx, &orderclient.ListRequest{
  Uid: req.Uid,
 })
 if err != nil {
  return nil, err
 }

 orderList := make([]*types.ListResponse, 0)
 for _, item := range res.Data {
  orderList = append(orderList, &types.ListResponse{
   Id:     item.Id,
   Uid:    item.Uid,
   Pid:    item.Pid,
   Amount: item.Amount,
   Status: item.Status,
  })
 }

 return orderList, nil
}

    7、 启动 order rpc 服务

    提示：启动服务需要在 golang 容器中启动

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

    有的人会报错

    root@13258ded6d62:/usr/src/code/mall/service/order/rpc# go run order.go -f etc/order.yaml
2022/03/09 20:55:40 {"@timestamp":"2022-03-09T20:55:40.315+08:00","level":"error","content":"discovbuilder.go:33 bad resolver state"}
2022/03/09 20:55:43 rpc dial: discov://etcd:2379/user.rpc, error: context deadline exceeded, make sure rpc service "user.rpc" is already started
exit status 1

    在这里插入图片描述

    这是要求我们开启 user.rpc 的服务（参考：学习笔记：带你十天轻松搞定 Go 微服务系列（三）- 用户服务）

    接着报错

    2022/03/09 20:58:56 {"@timestamp":"2022-03-09T20:58:56.499+08:00","level":"error","content":"discovbuilder.go:33 bad resolver state"}
2022/03/09 20:58:59 rpc dial: discov://etcd:2379/product.rpc, error: context deadline exceeded, make sure rpc service "product.rpc" is already started
exit status 1

    这是要求我们开启 product.rpc 的服务（参考：学习笔记：带你十天轻松完搞定 Go 微服务系列（四）- 产品服务）

    再运行，出现 Starting rpc server at 127.0.0.1:9002...就证明没问题了，如下图：

    在这里插入图片描述

    8、 启动 order api 服务

    提示：启动服务需要在 golang 容器中启动

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

    出现 Starting server at 0.0.0.0:8002...就证明没问题了，如下图：

    在这里插入图片描述

    9、系列

    学习笔记：带你十天轻松搞定 Go 微服务系列（一）- 环境搭建
    学习笔记：带你十天轻松搞定 Go 微服务系列（二）- 服务拆分
    学习笔记：带你十天轻松搞定 Go 微服务系列（三）- 用户服务
    学习笔记：带你十天轻松搞定 Go 微服务系列（四）- 产品服务
    学习笔记：带你十天轻松搞定 Go 微服务系列（五）- 订单服务
    学习笔记：带你十天轻松搞定 Go 微服务系列（六）- 支付服务
    学习笔记：带你十天轻松搞定 Go 微服务系列（七）- RPC 服务 Auth 验证
    学习笔记：带你十天轻松搞定 Go 微服务系列（八）- 服务监控
    学习笔记：带你十天轻松搞定 Go 微服务系列（九）- 链路追踪
    学习笔记：带你十天轻松搞定 Go 微服务系列大结局（十）- 分布式事务

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