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82 lines
2.1 KiB
82 lines
2.1 KiB
package main
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import (
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"context"
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"log"
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"time"
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"github.com/go-kratos/kratos/contrib/registry/consul/v2"
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"github.com/go-kratos/kratos/examples/helloworld/helloworld"
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"github.com/go-kratos/kratos/v2/middleware/recovery"
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"github.com/go-kratos/kratos/v2/selector/filter"
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"github.com/go-kratos/kratos/v2/selector/p2c"
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"github.com/go-kratos/kratos/v2/selector/wrr"
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"github.com/go-kratos/kratos/v2/transport/grpc"
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"github.com/go-kratos/kratos/v2/transport/http"
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"github.com/hashicorp/consul/api"
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)
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func main() {
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consulCli, err := api.NewClient(api.DefaultConfig())
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if err != nil {
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panic(err)
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}
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r := consul.New(consulCli)
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// new grpc client
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conn, err := grpc.DialInsecure(
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context.Background(),
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grpc.WithEndpoint("discovery:///helloworld"),
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grpc.WithDiscovery(r),
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// 由于gRPC框架的限制只能使用全局balancer+filter的方式来实现selector
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// 这里使用weighted round robin算法的balancer+静态version=1.0.0的Filter
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grpc.WithBalancerName(wrr.Name),
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grpc.WithSelectFilter(filter.Version("1.0.0")),
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)
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if err != nil {
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log.Fatal(err)
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}
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defer conn.Close()
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gClient := helloworld.NewGreeterClient(conn)
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// new http client
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hConn, err := http.NewClient(
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context.Background(),
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http.WithMiddleware(
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recovery.Recovery(),
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),
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http.WithEndpoint("discovery:///helloworld"),
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http.WithDiscovery(r),
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// 这里使用p2c算法的balancer+静态version=2.0.0的Filter组成一个selector
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http.WithSelector(
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p2c.New(p2c.WithFilter(filter.Version("2.0.0"))),
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),
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)
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if err != nil {
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log.Fatal(err)
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}
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defer hConn.Close()
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hClient := helloworld.NewGreeterHTTPClient(hConn)
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for {
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time.Sleep(time.Second)
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callGRPC(gClient)
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callHTTP(hClient)
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}
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}
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func callGRPC(client helloworld.GreeterClient) {
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reply, err := client.SayHello(context.Background(), &helloworld.HelloRequest{Name: "kratos"})
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if err != nil {
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log.Fatal(err)
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}
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log.Printf("[grpc] SayHello %+v\n", reply)
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}
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func callHTTP(client helloworld.GreeterHTTPClient) {
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reply, err := client.SayHello(context.Background(), &helloworld.HelloRequest{Name: "kratos"})
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if err != nil {
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log.Fatal(err)
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}
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log.Printf("[http] SayHello %s\n", reply.Message)
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}
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