add goa examples

go/goa_example/gen/grpc/cli/host/cli.go

@@ -0,0 +1,172 @@
+// Code generated by goa v3.6.0, DO NOT EDIT.
+//
+// host gRPC client CLI support package
+//
+// Command:
+// $ goa gen goa_example/design
+
+package cli
+
+import (
+	"flag"
+	"fmt"
+	service1c "goa_example/gen/grpc/service1/client"
+	"os"
+
+	goa "goa.design/goa/v3/pkg"
+	grpc "google.golang.org/grpc"
+)
+
+// UsageCommands returns the set of commands and sub-commands using the format
+//
+//    command (subcommand1|subcommand2|...)
+//
+func UsageCommands() string {
+	return `service1 (signin|secure)
+`
+}
+
+// UsageExamples produces an example of a valid invocation of the CLI tool.
+func UsageExamples() string {
+	return os.Args[0] + ` service1 signin --username "user" --password "password"` + "\n" +
+		""
+}
+
+// ParseEndpoint returns the endpoint and payload as specified on the command
+// line.
+func ParseEndpoint(cc *grpc.ClientConn, opts ...grpc.CallOption) (goa.Endpoint, interface{}, error) {
+	var (
+		service1Flags = flag.NewFlagSet("service1", flag.ContinueOnError)
+
+		service1SigninFlags        = flag.NewFlagSet("signin", flag.ExitOnError)
+		service1SigninUsernameFlag = service1SigninFlags.String("username", "REQUIRED", "")
+		service1SigninPasswordFlag = service1SigninFlags.String("password", "REQUIRED", "")
+
+		service1SecureFlags       = flag.NewFlagSet("secure", flag.ExitOnError)
+		service1SecureMessageFlag = service1SecureFlags.String("message", "", "")
+		service1SecureTokenFlag   = service1SecureFlags.String("token", "REQUIRED", "")
+	)
+	service1Flags.Usage = service1Usage
+	service1SigninFlags.Usage = service1SigninUsage
+	service1SecureFlags.Usage = service1SecureUsage
+
+	if err := flag.CommandLine.Parse(os.Args[1:]); err != nil {
+		return nil, nil, err
+	}
+
+	if flag.NArg() < 2 { // two non flag args are required: SERVICE and ENDPOINT (aka COMMAND)
+		return nil, nil, fmt.Errorf("not enough arguments")
+	}
+
+	var (
+		svcn string
+		svcf *flag.FlagSet
+	)
+	{
+		svcn = flag.Arg(0)
+		switch svcn {
+		case "service1":
+			svcf = service1Flags
+		default:
+			return nil, nil, fmt.Errorf("unknown service %q", svcn)
+		}
+	}
+	if err := svcf.Parse(flag.Args()[1:]); err != nil {
+		return nil, nil, err
+	}
+
+	var (
+		epn string
+		epf *flag.FlagSet
+	)
+	{
+		epn = svcf.Arg(0)
+		switch svcn {
+		case "service1":
+			switch epn {
+			case "signin":
+				epf = service1SigninFlags
+
+			case "secure":
+				epf = service1SecureFlags
+
+			}
+
+		}
+	}
+	if epf == nil {
+		return nil, nil, fmt.Errorf("unknown %q endpoint %q", svcn, epn)
+	}
+
+	// Parse endpoint flags if any
+	if svcf.NArg() > 1 {
+		if err := epf.Parse(svcf.Args()[1:]); err != nil {
+			return nil, nil, err
+		}
+	}
+
+	var (
+		data     interface{}
+		endpoint goa.Endpoint
+		err      error
+	)
+	{
+		switch svcn {
+		case "service1":
+			c := service1c.NewClient(cc, opts...)
+			switch epn {
+			case "signin":
+				endpoint = c.Signin()
+				data, err = service1c.BuildSigninPayload(*service1SigninUsernameFlag, *service1SigninPasswordFlag)
+			case "secure":
+				endpoint = c.Secure()
+				data, err = service1c.BuildSecurePayload(*service1SecureMessageFlag, *service1SecureTokenFlag)
+			}
+		}
+	}
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return endpoint, data, nil
+}
+
+// service1Usage displays the usage of the service1 command and its subcommands.
+func service1Usage() {
+	fmt.Fprintf(os.Stderr, `The secured service exposes endpoints that require valid authorization credentials.
+Usage:
+    %[1]s [globalflags] service1 COMMAND [flags]
+
+COMMAND:
+    signin: Signin implements signin.
+    secure: 这是一个需要JWT认证的接口
+
+Additional help:
+    %[1]s service1 COMMAND --help
+`, os.Args[0])
+}
+func service1SigninUsage() {
+	fmt.Fprintf(os.Stderr, `%[1]s [flags] service1 signin -username STRING -password STRING
+
+Signin implements signin.
+    -username STRING: 
+    -password STRING: 
+
+Example:
+    %[1]s service1 signin --username "user" --password "password"
+`, os.Args[0])
+}
+
+func service1SecureUsage() {
+	fmt.Fprintf(os.Stderr, `%[1]s [flags] service1 secure -message JSON -token STRING
+
+这是一个需要JWT认证的接口
+    -message JSON: 
+    -token STRING: 
+
+Example:
+    %[1]s service1 secure --message '{
+      "fail": true
+   }' --token "Quia omnis amet et rerum quis."
+`, os.Args[0])
+}