76 lines
1.5 KiB
Markdown
76 lines
1.5 KiB
Markdown
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# Greeter 问候示例服务
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本示例展示基于gRPC的Go-Micro服务
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## 本目录有
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- **server** - Greeter的gRPC服务端
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- **client** - gRPC客户端，会调用一次server
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- **function** - 演示gRPC Greeter function接口，更多关于Function，请查阅[Function](https://micro.mu/docs/writing-a-go-function_cn.html)
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- **gateway** - gRPC网关
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## 测试服务
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运行服务
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```
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$ go run server/main.go --registry=mdns
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2016/11/03 18:41:22 Listening on [::]:55194
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2016/11/03 18:41:22 Broker Listening on [::]:55195
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2016/11/03 18:41:22 Registering node: go.micro.srv.greeter-1e200612-a1f5-11e6-8e84-68a86d0d36b6
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```
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测试
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```
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$ go run client/main.go --registry=mdns
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Hello John
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```
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## 测试 Function
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运行测试
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```
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go run function/main.go --registry=mdns
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```
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调用服务
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服务端的Function服务只会执行一次，所以在下面的命令执行且服务端返回请求后，服务端便后退出
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```bash
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$ go run client/main.go --registry=mdns --service_name="go.micro.fnc.greeter"
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# 返回
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Hello John
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# 再次执行
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$ go run client/main.go --registry=mdns --service_name="go.micro.fnc.greeter"
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# 就会报异常，找不到服务
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{"id":"go.micro.client","code":500,"detail":"none available","status":"Internal Server Error"}
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```
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## 测试网关
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指定地址再运行服务端：
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```
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go run server/main.go --registry=mdns --server_address=localhost:9090
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```
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运行网关
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```
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go run gateway/main.go
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```
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使用curl调用网关
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```
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curl -d '{"name": "john"}' http://localhost:8080/greeter/hello
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# 返回
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{"msg":"Hello john"}
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```
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