Goctl Rpc是goctl
脚手架下的一个rpc服务代码生成模块,支持proto模板生成和rpc服务代码生成,通过此工具生成代码你只需要关注业务逻辑编写而不用去编写一些重复性的代码。这使得我们把精力重心放在业务上,从而加快了开发效率且降低了代码出错率。
通过命令 goctl rpc new ${servieName}
生成
如生成greet rpc服务:
goctl rpc new greet
执行后代码结构如下:
└── greet
├── etc
│ └── greet.yaml
├── go.mod
├── go.sum
├── greet
│ ├── greet.go
│ ├── greet_mock.go
│ └── types.go
├── greet.go
├── greet.proto
├── internal
│ ├── config
│ │ └── config.go
│ ├── logic
│ │ └── pinglogic.go
│ ├── server
│ │ └── greetserver.go
│ └── svc
│ └── servicecontext.go
└── pb
└── greet.pb.go
rpc一键生成常见问题解决见 常见问题解决
goctl rpc template -o=user.proto
syntax = "proto3";
package remote;
message Request {
// 用户名
string username = 1;
// 用户密码
string password = 2;
}
message Response {
// 用户名称
string name = 1;
// 用户性别
string gender = 2;
}
service User {
// 登录
rpc Login(Request)returns(Response);
}
goctl rpc proto -src=user.proto
代码tree
user
├── etc
│ └── user.json
├── internal
│ ├── config
│ │ └── config.go
│ ├── handler
│ │ ├── loginhandler.go
│ ├── logic
│ │ └── loginlogic.go
│ └── svc
│ └── servicecontext.go
├── pb
│ └── user.pb.go
├── shared
│ ├── mockusermodel.go
│ ├── types.go
│ └── usermodel.go
├── user.go
└── user.proto
goctl rpc proto -h
NAME:
goctl rpc proto - generate rpc from proto
USAGE:
goctl rpc proto [command options] [arguments...]
OPTIONS:
--src value, -s value the file path of the proto source file
--dir value, -d value the target path of the code,default path is "${pwd}". [option]
--service value, --srv value the name of rpc service. [option]
--shared[已废弃] value the dir of the shared file,default path is "${pwd}/shared. [option]"
--idea whether the command execution environment is from idea plugin. [option]
--service 服务名称,非必填,默认为proto文件所在目录名称,但是,如果proto所在目录为一下结构:
user
├── cmd
│ └── rpc
│ └── user.proto
则服务名称亦为user,而非proto所在文件夹名称了,这里推荐使用这种结构,可以方便在同一个服务名下建立不同类型的服务(api、rpc、mq等),便于代码管理与维护。
注意:这里的shared文件夹名称将会是代码中的package名称。
关注业务代码编写,将重复性、与业务无关的工作交给goctl,生成好rpc服务代码后,开饭人员仅需要修改
对于需要进行rpc mock的开发人员,在安装了mockgen
工具的前提下可以在rpc的shared文件中生成好对应的mock文件。
google.golang.org/grpc
需要降级到v1.26.0,且protoc-gen-go版本不能高于v1.3.2(see https://github.com/grpc/grpc-go/issues/3347)即replace google.golang.org/grpc => google.golang.org/grpc v1.26.0
proto不支持暂多文件同时生成
proto不支持外部依赖包引入,message不支持inline
目前main文件、shared文件、handler文件会被强制覆盖,而和开发人员手动需要编写的则不会覆盖生成,这一类在代码头部均有
// Code generated by goctl. DO NOT EDIT!
// Source: xxx.proto
的标识,请注意不要将也写业务性代码写在里面。
pb/xx.pb.go:220:7: undefined: grpc.ClientConnInterface
pb/xx.pb.go:224:11: undefined: grpc.SupportPackageIsVersion6
pb/xx.pb.go:234:5: undefined: grpc.ClientConnInterface
pb/xx.pb.go:237:24: undefined: grpc.ClientConnInterface
解决方法:请将protoc-gen-go
版本降至v1.3.2及一下
# go.etcd.io/etcd/clientv3/balancer/picker
../../../go/pkg/mod/go.etcd.io/etcd@v0.0.0-20200402134248-51bdeb39e698/clientv3/balancer/picker/err.go:25:9: cannot use &errPicker literal (type *errPicker) as type Picker in return argument:*errPicker does not implement Picker (wrong type for Pick method)
have Pick(context.Context, balancer.PickInfo) (balancer.SubConn, func(balancer.DoneInfo), error)
want Pick(balancer.PickInfo) (balancer.PickResult, error)
../../../go/pkg/mod/go.etcd.io/etcd@v0.0.0-20200402134248-51bdeb39e698/clientv3/balancer/picker/roundrobin_balanced.go:33:9: cannot use &rrBalanced literal (type *rrBalanced) as type Picker in return argument:
*rrBalanced does not implement Picker (wrong type for Pick method)
have Pick(context.Context, balancer.PickInfo) (balancer.SubConn, func(balancer.DoneInfo), error)
want Pick(balancer.PickInfo) (balancer.PickResult, error)
#github.com/tal-tech/go-zero/zrpc/internal/balancer/p2c
../../../go/pkg/mod/github.com/tal-tech/go-zero@v1.0.12/zrpc/internal/balancer/p2c/p2c.go:41:32: not enough arguments in call to base.NewBalancerBuilder
have (string, *p2cPickerBuilder)
want (string, base.PickerBuilder, base.Config)
../../../go/pkg/mod/github.com/tal-tech/go-zero@v1.0.12/zrpc/internal/balancer/p2c/p2c.go:58:9: cannot use &p2cPicker literal (type *p2cPicker) as type balancer.Picker in return argument:
*p2cPicker does not implement balancer.Picker (wrong type for Pick method)
have Pick(context.Context, balancer.PickInfo) (balancer.SubConn, func(balancer.DoneInfo), error)
want Pick(balancer.PickInfo) (balancer.PickResult, error)
解决方法:
```golang
replace google.golang.org/grpc => google.golang.org/grpc v1.26.0
```