Add code generation example

examples/client/codegen/codegen.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/micro/go-micro/cmd"
+	example "github.com/micro/go-micro/examples/server/proto/example"
+	"golang.org/x/net/context"
+)
+
+var (
+	cl = example.NewExampleClient(nil)
+)
+
+func call(i int) {
+	rsp, err := cl.Call(context.Background(), &example.Request{Name: "John"})
+	if err != nil {
+		fmt.Println("call err: ", err, rsp)
+		return
+	}
+	fmt.Println("Call:", i, "rsp:", rsp.Msg)
+}
+
+func stream() {
+	stream, err := cl.Stream(context.Background(), &example.StreamingRequest{Count: int64(10)})
+	if err != nil {
+		fmt.Println("err:", err)
+		return
+	}
+	for i := 0; i < 10; i++ {
+		rsp, err := stream.Next()
+		if err != nil {
+			fmt.Println("err:", err)
+			break
+		}
+		fmt.Println("Stream: rsp:", rsp.Count)
+	}
+	if stream.Error() != nil {
+		fmt.Println("stream err:", err)
+		return
+	}
+	if err := stream.Close(); err != nil {
+		fmt.Println("stream close err:", err)
+	}
+}
+
+func main() {
+	cmd.Init()
+
+	fmt.Println("\n--- Call example ---\n")
+	for i := 0; i < 10; i++ {
+		call(i)
+	}
+	fmt.Println("\n--- Streamer example ---\n")
+	stream()
+}