[hydra](https://github.com/micro-plat/hydra)
======================
[https://github.com/micro-plat/hydra](https://github.com/micro-plat/hydra)
后端一站式服务框架,提供 *API*、*WEB*、*WEBSOCKET*、*RPC*、*定时任务*、*消息消费* 等服务,可任意组合以单体方式部署,并提供丰富的服务治理功能:
[https://github.com/micro-plat/hydra](https://github.com/micro-plat/hydra)
- #### 1. 配置中心、注册中心
使用zookeeper, etcd, redis, 本地文件系统,内存等作为配置与注册中心, 管理服务器配置、 服务注册与发现、 服务监控等。所有配置支持热更新。
- #### 2. 服务化(SOA)与注册发现
一切皆服务,使用统一的request, response编写业务代码,注册到任意服务器即可。
系统自动将服务发布到注册中心,调用时根据规则自动进行负载均衡。
- #### 3. 链路跟踪与业务监控
支持Skywalking,Cat等APM工具进行分布式追踪、性能指标分析、应用和服务依赖分析。
采集服务QPS、处理时长、响应等统计信息存入influxdb,使用grafana配置图表即可多维度监控系统状态。
- #### 4. 分布式日志归集
使用[rlog](https://github.com/micro-plat/rlog)将分布式服务器日志提交到日志归集服务器,并存储到Elastic search中,通过[rlog](https://github.com/micro-plat/rlog)查询界面可查询服务的全链路日志。
- #### 5. 访问控制与安全认证
提供白名单、黑名单访问控制,服务器限流、降级、熔断等控制。
Basic Auth、API KEY、Cookie, JWT等安全认证。
[SAS]远程服务认证,API KEY, RSA, 动态秘钥,DES,AES等签名与加解密服务。
- #### 6. 灰度发布与集群转发
可根据请求路径、用户信息、请求头、Cookie等编写tengo脚本,灵活编写灰度或集群转发规则。
- #### 7. 流程任务多集群模式
提供对等、分片、主从等集群模式。
- #### 8. 基础组件
提供缓存、数据库、消息队列、RPC、分布式锁等组件工具。
- #### 9. 跨平台支持
支持Windows、Linux和macOS跨平台运行,以系统服务方式安装、卸载、运行、停止、自动启动管理等。
----------
[hello world示例](/01guide/01helloworld.md)
[构建六类服务器](/01guide/02servers.md)
[服务运行](/02component/01service.md)
[配置中心](/02component/02conf.md)
[https://github.com/micro-plat/hydra](https://github.com/micro-plat/hydra)
## 一、示例
- ### 1. 构建API服务
```go
package main
import (
"github.com/micro-plat/hydra"
"github.com/micro-plat/hydra/hydra/servers/http"
)
func main() {
//创建app
app := hydra.NewApp(
hydra.WithServerTypes(http.API),
)
//注册服务
app.API("/hello", func(ctx hydra.IContext) interface{} {
return "hello world"
})
//启动app
app.Start()
}
```
- ### 2. 构建RPC服务
```go
package main
import (
"github.com/micro-plat/hydra"
"github.com/micro-plat/hydra/hydra/servers/rpc"
)
func main() {
//创建app
app := hydra.NewApp(
hydra.WithServerTypes(rpc.RPC),
)
//注册服务
app.RPC("/hello", func(ctx hydra.IContext) interface{} {
return "hello world"
})
//启动app
app.Start()
}
```
- ### 3. 构建定时任务服务
```go
package main
import (
"github.com/micro-plat/hydra"
"github.com/micro-plat/hydra/hydra/servers/cron"
)
func main() {
app := hydra.NewApp(
hydra.WithServerTypes(cron.CRON),
)
//注册服务
app.CRON("/hello",hello,"@every 5s")
app.Start()
}
func hello(ctx hydra.IContext) interface{} {
return "success"
}
```
- ### 4. 构建消息消费服务
```go
package main
import (
"github.com/micro-plat/hydra"
"github.com/micro-plat/hydra/hydra/servers/mqc"
"github.com/micro-plat/hydra/conf/vars/queue/lmq"
)
func main() {
app := hydra.NewApp(
hydra.WithServerTypes(mqc.MQC),
)
//注册服务
app.MQC("/hello",hello,"queue-name")
//设置消息队列服务器(本地内存MQ,支持redis,mqtt等)
hydra.Conf.MQC(lmq.MQ)
app.Start()
}
func hello(ctx hydra.IContext) interface{} {
return "success"
}
```
## 二、组合服务
```go
package main
import (
"github.com/micro-plat/hydra"
"github.com/micro-plat/hydra/hydra/servers/http"
"github.com/micro-plat/hydra/hydra/servers/cron"
)
func main() {
app := hydra.NewApp(
hydra.WithServerTypes(http.API,cron.CRON),
)
app.API("/hello",hello)
app.CRON("/hello",hello,"@every 5s")
app.Start()
}
func hello(ctx hydra.IContext) interface{} {
return "hello world"
}
```
```sh
$ ./flowserver run --plat test
```
日志如下:
```sh
[2020/07/08 09:36:31.140432][i][29f63e41d]初始化: /test/flowserver/api-cron/1.0.0/conf
[2020/07/08 09:36:31.143027][i][29f63e41d]启动[api]服务...
[2020/07/08 09:36:31.643524][i][b65655312]启动成功(api,http://192.168.4.121:8080,1)
[2020/07/08 09:36:31.643885][i][29f63e41d]启动[cron]服务...
[2020/07/08 09:36:31.844844][i][3908a5ccc]启动成功(cron,cron://192.168.4.121,1)
[2020/07/08 09:36:32.346047][d][3908a5ccc]the cron server is started as master
[2020/07/08 09:36:36.648149][i][01751ece6]cron.request: GET /hello from 192.168.4.121
[2020/07/08 09:36:36.648244][i][01751ece6]cron.response: GET /hello 200 193.356µs
[2020/07/08 09:36:41.651858][i][00f45e17b]cron.request: GET /hello from 192.168.4.121
[2020/07/08 09:36:41.651911][i][00f45e17b]cron.response: GET /hello 200 159.694µs
```
服务已启动,cron server开始周期(每隔5秒)执行任务
[https://github.com/micro-plat/hydra](https://github.com/micro-plat/hydra)
```sh
$ curl http://192.168.4.121:8080/hello
```
返回内容:
```sh
hello world
```
## 三、 服务器配置
#### 1. 设置平台、系统、集群名称
```go
app := hydra.NewApp(
hydra.WithPlatName("test"),
hydra.WithSystemName("apiserver"),
hydra.WithServerTypes(http.API),
hydra.WithClusterName("prod"),
)
app.Start()
```
#### 2. 运行时 通过cli参数指定平台、系统、集群名称
```go
app := hydra.NewApp(
hydra.WithServerTypes(http.API),
)
app.Start()
```
#### 3. *API*监听端口:
```go
hydra.Conf.API("8090")
```
#### 4. *API*超时时长
```go
hydra.Conf.API("8090", api.WithHeaderReadTimeout(30), api.WithTimeout(30, 30))
```
#### 5. 白名单、黑名单
```go
hydra.Conf.API("8080").
WhiteList(whitelist.NewIPList("/**", whitelist.WithIP("192.168.4.121"))).
BlackList(blacklist.WithIP("192.168.4.120"))
```
#### 6. JWT认证
- 1. 配置*/member*开头人路径不验证,将jwt串串存到header中:
```go
hydra.Conf.API("8080").Jwt(jwt.WithExcludes("/member/**"), jwt.WithHeader())
```
- 2. 登录成功设置jwt信息:
```go
type UserInfo struct{
Name string `json:"name"`
UID string `json:"id"`
}
func login(ctx hydra.IContext) interface{} {
userInfo := UserInfo{UID:"209867923",Name:"colin"}
ctx.User().Auth().Response(&userInfo)
return "success"
}
```
- 3. 从jwt中获取用户信息:
```go
func login(ctx hydra.IContext) interface{} {
userInfo :=new(UserInfo)
ctx.User().Auth().Bind(&userInfo)
return "success"
}
```
#### 7. 灰度发布
以 *202.222.* 开头的IP,转发到名称中包含*gray*的集群(tengo脚本):
```go
hydra.Conf.API("8090").Proxy(`
request := import("request")
app := import("app")
text := import("text")
types :=import("types")
fmt := import("fmt")
getUpCluster := func(){
ip := request.getClientIP()
current:= app.getCurrentClusterName()
if text.has_prefix(ip,"202.222."){
return app.getClusterNameBy("gray")
}
return current
}
upcluster := getUpCluster()
`)
```
#### 8. 自定义输出格式
- 1. 处理输出(tengo脚本):
```go
hydra.Conf.API("8070").Render(`
request := import("request")
response := import("response")
text := import("text")
types :=import("types")
rc:="<response><code>{@status}</code><msg>{@content}</msg></response>"
getContent := func(){
input:={status:response.getStatus(),content:response.getRaw()["id"]}
if text.has_prefix(request.getPath(),"/tx/request"){
return [200,types.translate(rc,input)]
}
if text.has_prefix(request.getPath(),"/tx/query"){
return [200,types.translate(rc,input),"text/plain"]
}
return [200,response.getContent()]
}
render := getContent()
`)
```
- 2. 服务实现
```go
func main() {
app := hydra.NewApp(
hydra.WithServerTypes(http.API),
)
app.API("/tx/request", request)
app.API("/tx/query", request)
app.API("/request", request)
app.Start()
}
func request(ctx hydra.IContext) interface{} {
return map[string]interface{}{
"id": 101010,
}
}
```
- 3. 请求服务
```sh
~/work/bin$ curl http://localhost:8070/tx/request
<response><code>200</code><msg>101010</msg></response>
~/work/bin$ curl http://localhost:8070/request
{"id":101010}
```
#### 9. 数据库配置
```go
hydra.Conf.Vars().DB("db", oracle.New("hydra/hydra"))
```
使用方法:
```go
func GetUserInfo(id int64)(map[string]interface{},error)
db:=hydra.C.GetDB()
userInfo,err:=db.Query("select t.* from user_info t where t.id=@id",map[string]interface{}{"id",id})
return userInfo,err
```
#### 10. 缓存配置
```go
hydra.Conf.Vars().Cache("cache", redis.New("192.168.0.109"))
```
使用方法:
```go
func GetUserInfo(id int64)(string,error)
cache:=hydra.C.GetCache()
userInfo,err:=cache.Get(fmt.Sprintf("user:info:%d",id))
return userInfo,err
```
## 四、 服务注册
- 1. 服务函数
```go
func main() {
app := hydra.NewApp(
hydra.WithServerTypes(http.API),
)
app.API("/request", request)
app.Start()
}
func request(ctx hydra.IContext) interface{} {
return "success"
}
```
- 2. 包含Handle服务的struct构造函数或对象
```go
func main() {
app := hydra.NewApp(
hydra.WithServerTypes(http.API),
)
app.API("/order", NewOrderService)
//或
// app.API("/order", &OrderService{})
app.Start()
}
type OrderService struct {
}
func NewOrderService()*OrderService{
return &OrderService{}
}
func (o *OrderService) Handle(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------订单处理----------"))
return "success"
}
```
- 3. 多个服务注册
```go
func main() {
app := hydra.NewApp(
hydra.WithServerTypes(http.API),
)
app.API("/order/*", NewOrderService)
app.Start()
}
type OrderService struct {
}
func NewOrderService()*OrderService{
return &OrderService{}
}
func (o *OrderService) RequestHandle(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------收单处理----------"))
return "success"
}
func (o *OrderService) QueryHandle(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------查单处理----------"))
return "success"
}
```
> 实际注册了两个服务 */order/request*,*/order/query*
- 3. RESTful服务注册
```go
func main() {
app := hydra.NewApp(
hydra.WithServerTypes(http.API),
)
app.API("/product", &ProductService{})
app.Start()
}
type ProductService struct {
}
func (o *ProductService) GetHandle(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------查询产品----------"))
return "success"
}
func (o *ProductService) PostHandle(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------新增产品----------"))
return "success"
}
func (o *OrderService) PutHandle(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------修改产品----------"))
return "success"
}
func (o *OrderService) DeleteHandle(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------禁用产品----------"))
return "success"
}
```
> 实际注册了一个服务 */product*
[https://github.com/micro-plat/hydra](https://github.com/micro-plat/hydra)
- 4. 钩子函数
```go
func main() {
app := hydra.NewApp(
hydra.WithServerTypes(http.API),
)
app.API("/order", NewOrderService)
app.Start()
}
type OrderService struct {
}
func NewOrderService()*OrderService{
return &OrderService{}
}
func (o *OrderService) Handling(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------预处理----------"))
return "success"
}
func (o *OrderService) Handle(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------订单处理----------"))
return "success"
}
func (o *OrderService) Handled(ctx hydra.IContext) interface{} {
ctx.Log().Info("--------后处理----------"))
return "success"
}
```
## 五、 服务响应
- 1. 普通字符串
```go
func request(ctx hydra.IContext) interface{} {
return "success"
}
```
> 响应内容: *success*
> Content-Type: text/plain; charset=utf-8
- 2. JSON字符串
```go
func request(ctx hydra.IContext) interface{} {
return `{"name":"colin"}`
}
```
> 响应内容: *{"name":"colin"}*
> Content-Type: application/json; charset=utf-8
- 3. XML字符串
```go
func request(ctx hydra.IContext) interface{} {
return `<name>colin</name>`
}
```
> 响应内容: <name> colin</name>
> Content-Type: application/xml; charset=utf-8
- 4. Map
```go
func request(ctx hydra.IContext) interface{} {
return map[string]interface{}{"name":"colin"}
}
```
> 响应内容: *{"name":"colin"}*
> Content-Type: application/json; charset=utf-8
- 5. Struct
```go
func request(ctx hydra.IContext) interface{} {
return &UserInfo{Name:"colin"}
}
```
> 响应内容: *{"name":"colin"}*
> Content-Type: application/json; charset=utf-8
- 6. Map,指定ContentType
```go
func request(ctx hydra.IContext) interface{} {
ctx.Response().ContentType(context.UTF8XML)
return map[string]interface{}{"name":"colin"}
}
```
> 响应内容: *<name/>colin <name/>*
> Content-Type: application/xml; charset=utf-8
- 7. Struct,指定ContentType
```go
func request(ctx hydra.IContext) interface{} {
ctx.Response().ContentType(context.UTF8XML)
return &UserInfo{Name:"colin"}
}
```
> 响应内容: *<name/>colin <name/>*
> Content-Type: application/xml; charset=utf-8
- 8. 普通错误
```go
func request(ctx hydra.IContext) interface{} {
return fmt.Errorf("err")
}
```
> 响应内容: err
> Content-Type: text/plain; charset=utf-8
- 9. 带状态码的错误
```go
func request(ctx hydra.IContext) interface{} {
return errs.New(500,"err")
}
```
> 状态码: 500
> 响应内容: err
> Content-Type: text/plain; charset=utf-8
[https://github.com/micro-plat/hydra](https://github.com/micro-plat/hydra)
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