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132 lines
3.5 KiB
132 lines
3.5 KiB
package main
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import (
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"context"
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"fmt"
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"github.com/afex/hystrix-go/hystrix"
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consul "github.com/asim/go-micro/plugins/registry/consul/v4"
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"github.com/go-micro/plugins/v4/wrapper/select/roundrobin"
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opentracing2 "github.com/go-micro/plugins/v4/wrapper/trace/opentracing"
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"github.com/opentracing/opentracing-go"
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"go-micro.dev/v4/client"
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"go-micro.dev/v4/web"
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"goproduct/common"
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"goproduct/proto"
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"log"
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"net"
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"net/http"
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"strconv"
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"github.com/gin-gonic/gin"
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"go-micro.dev/v4"
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"go-micro.dev/v4/registry"
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)
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// 获取远程服务的客户端
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func main() {
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router := gin.Default()
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//注册到consul
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consulReg := consul.NewRegistry(func(options *registry.Options) {
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options.Addrs = []string{"192.168.100.131:8500"}
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})
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//初始化链路追踪的jaeper
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t, io, err := common.NewTracer("shop-cart-client", "192.168.100.131:6831")
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if err != nil {
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log.Println(err)
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}
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defer io.Close()
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opentracing.SetGlobalTracer(t)
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//熔断器
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hystrixStreamHandler := hystrix.NewStreamHandler()
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hystrixStreamHandler.Start()
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go func() {
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err := http.ListenAndServe(net.JoinHostPort("192.168.100.1", "9096"), hystrixStreamHandler)
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if err != nil {
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log.Panic(err)
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}
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}()
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rpcServer := micro.NewService(
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//micro.Name("shop-product-client"),
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micro.Registry(consulReg), //服务发现
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micro.WrapClient(opentracing2.NewClientWrapper(opentracing.GlobalTracer())),
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//加入熔断器
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micro.WrapClient(NewClientHystrixWrapper()),
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//负载均衡
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micro.WrapClient(roundrobin.NewClientWrapper()),
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)
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client := proto.NewAddCartService("shop-cart", rpcServer.Client())
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clientA := proto.NewShowProductDetailService("shop-product", rpcServer.Client())
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//分页查询商品列表
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router.GET("/increase", func(c *gin.Context) {
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// "number": 0,
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// "productId": 0,
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// "productSkuId": 0
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number, _ := strconv.Atoi(c.Request.FormValue("number"))
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productId, _ := strconv.Atoi(c.Request.FormValue("productId"))
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productSkuId, _ := strconv.Atoi(c.Request.FormValue("productSkuId"))
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//拼接请求信息
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req := &proto.AddCartReq{
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Number: int32(number),
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ProductId: int32(productId),
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ProductSkuId: int32(productSkuId),
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}
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//商品详情
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reqDetail := &proto.ProductDetailReq{
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Id: int32(productId),
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}
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//
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respDetail, err := clientA.ShowProductDetail(context.TODO(), reqDetail)
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req.ProductName = respDetail.ProductDetail[0].Name
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req.ProductMainPicture = respDetail.ProductDetail[0].MainPicture
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log.Println(" /ProductDetailReq get :", req)
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//SKU
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//添加购物车 远程调用服务
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resp, err := client.AddCart(context.TODO(), req)
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log.Println(" /increase :", resp)
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//根据响应做输出
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if err != nil {
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log.Println(err.Error())
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common.RespFail(c.Writer, resp, "请求失败")
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return
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}
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////writer data message row total field
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common.RespOK(c.Writer, resp, "请求成功")
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})
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service := web.NewService(
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web.Address(":6668"),
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web.Name("shop-cart-client"),
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web.Registry(consulReg),
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web.Handler(router),
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)
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//启动服务
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service.Run()
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}
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type clientWrapper struct {
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client.Client
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}
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func (c clientWrapper) Call(ctx context.Context, req client.Request, resp interface{}, opts ...client.CallOption) error {
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return hystrix.Do(req.Service()+"."+req.Endpoint(), func() error {
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//正常执行
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fmt.Println("call success ", req.Service()+"."+req.Endpoint())
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return c.Client.Call(ctx, req, resp, opts...)
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}, func(err error) error {
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fmt.Println("call err :", err)
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return err
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})
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}
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func NewClientHystrixWrapper() client.Wrapper {
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return func(i client.Client) client.Client {
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return &clientWrapper{i}
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}
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}
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