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library/net/rpc/warden/examples/grpcDebug/BUILD

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+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_binary",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["client.go"],
+    importpath = "go-common/library/net/rpc/warden/examples/grpcDebug",
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "@com_github_gogo_protobuf//jsonpb:go_default_library",
+        "@org_golang_google_grpc//:go_default_library",
+        "@org_golang_google_grpc//credentials:go_default_library",
+        "@org_golang_google_grpc//encoding:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)
+
+go_binary(
+    name = "grpcDebug",
+    embed = [":go_default_library"],
+    tags = ["automanaged"],
+)

library/net/rpc/warden/examples/grpcDebug/client.go

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+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"github.com/gogo/protobuf/jsonpb"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/encoding"
+)
+
+// Reply for test
+type Reply struct {
+	res []byte
+}
+
+var data string
+var file string
+var method string
+var addr string
+var tlsCert string
+var tlsServerName string
+
+//Reference https://jbrandhorst.com/post/grpc-json/
+func init() {
+	encoding.RegisterCodec(JSON{
+		Marshaler: jsonpb.Marshaler{
+			EmitDefaults: true,
+			OrigName:     true,
+		},
+	})
+	flag.StringVar(&data, "data", `{"name":"longxia","age":19}`, `{"name":"longxia","age":19}`)
+	flag.StringVar(&file, "file", ``, `./data.json`)
+	flag.StringVar(&method, "method", "/testproto.Greeter/SayHello", `/testproto.Greeter/SayHello`)
+	flag.StringVar(&addr, "addr", "127.0.0.1:8080", `127.0.0.1:8080`)
+	flag.StringVar(&tlsCert, "cert", "", `./cert.pem`)
+	flag.StringVar(&tlsServerName, "server_name", "", `hello_server`)
+}
+
+// 该example因为使用的是json传输格式所以只能用于调试或测试，用于线上会导致性能下降
+// 使用方法：
+//  ./grpcDebug -data='{"name":"xia","age":19}' -addr=127.0.0.1:8080 -method=/testproto.Greeter/SayHello
+//  ./grpcDebug -file=data.json -addr=127.0.0.1:8080 -method=/testproto.Greeter/SayHello
+func main() {
+	flag.Parse()
+	opts := []grpc.DialOption{
+		grpc.WithInsecure(),
+		grpc.WithDefaultCallOptions(grpc.CallContentSubtype(JSON{}.Name())),
+	}
+	if tlsCert != "" {
+		creds, err := credentials.NewClientTLSFromFile(tlsCert, tlsServerName)
+		if err != nil {
+			panic(err)
+		}
+		opts = append(opts, grpc.WithTransportCredentials(creds))
+	}
+	if file != "" {
+		content, err := ioutil.ReadFile(file)
+		if err != nil {
+			fmt.Println("ioutil.ReadFile %s failed!err:=%v", file, err)
+			os.Exit(1)
+		}
+		if len(content) > 0 {
+			data = string(content)
+		}
+	}
+	conn, err := grpc.Dial(addr, opts...)
+	if err != nil {
+		panic(err)
+	}
+	var reply Reply
+	err = grpc.Invoke(context.Background(), method, []byte(data), &reply, conn)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(string(reply.res))
+}
+
+// JSON is impl of encoding.Codec
+type JSON struct {
+	jsonpb.Marshaler
+	jsonpb.Unmarshaler
+}
+
+// Name is name of JSON
+func (j JSON) Name() string {
+	return "json"
+}
+
+// Marshal is json marshal
+func (j JSON) Marshal(v interface{}) (out []byte, err error) {
+	return v.([]byte), nil
+}
+
+// Unmarshal is json unmarshal
+func (j JSON) Unmarshal(data []byte, v interface{}) (err error) {
+	v.(*Reply).res = data
+	return nil
+}

library/net/rpc/warden/examples/grpcDebug/data.json

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+{"name":"xia","age":19}