mirror of https://github.com/v2fly/v2ray-core.git
95 lines
2.1 KiB
Go
95 lines
2.1 KiB
Go
package api
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import (
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"context"
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"encoding/json"
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"fmt"
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"os"
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"reflect"
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"strings"
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"time"
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"github.com/v2fly/v2ray-core/v4/main/commands/base"
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"google.golang.org/grpc"
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"google.golang.org/protobuf/proto"
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)
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var (
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apiServerAddrPtr string
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apiTimeout int
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)
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func setSharedFlags(cmd *base.Command) {
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cmd.Flag.StringVar(&apiServerAddrPtr, "s", "127.0.0.1:8080", "")
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cmd.Flag.StringVar(&apiServerAddrPtr, "server", "127.0.0.1:8080", "")
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cmd.Flag.IntVar(&apiTimeout, "t", 3, "")
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cmd.Flag.IntVar(&apiTimeout, "timeout", 3, "")
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}
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func dialAPIServer() (conn *grpc.ClientConn, ctx context.Context, close func()) {
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ctx, cancel := context.WithTimeout(context.Background(), time.Duration(apiTimeout)*time.Second)
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conn, err := grpc.DialContext(ctx, apiServerAddrPtr, grpc.WithInsecure(), grpc.WithBlock())
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if err != nil {
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base.Fatalf("failed to dial %s", apiServerAddrPtr)
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}
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close = func() {
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cancel()
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conn.Close()
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}
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return
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}
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func showResponese(m proto.Message) {
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if isEmpty(m) {
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// avoid outputs like `{}`, `{"key":{}}`
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return
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}
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b := new(strings.Builder)
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e := json.NewEncoder(b)
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e.SetIndent("", " ")
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e.SetEscapeHTML(false)
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err := e.Encode(m)
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if err != nil {
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fmt.Fprintf(os.Stdout, "%v\n", m)
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base.Fatalf("error encode json: %s", err)
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return
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}
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fmt.Println(strings.TrimSpace(b.String()))
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}
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// isEmpty checks if the response is empty (all zero values).
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// proto.Message types always "omitempty" on fields,
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// there's no chance for a response to show zero-value messages,
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// so we can perform isZero test here
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func isEmpty(response interface{}) bool {
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s := reflect.Indirect(reflect.ValueOf(response))
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if s.Kind() == reflect.Invalid {
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return true
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}
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switch s.Kind() {
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case reflect.Struct:
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for i := 0; i < s.NumField(); i++ {
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f := s.Type().Field(i)
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if f.Name[0] < 65 || f.Name[0] > 90 {
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// continue if not exported.
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continue
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}
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field := s.Field(i)
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if !isEmpty(field.Interface()) {
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return false
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}
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}
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case reflect.Array, reflect.Slice:
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for i := 0; i < s.Len(); i++ {
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if !isEmpty(s.Index(i).Interface()) {
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return false
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}
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}
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default:
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if !s.IsZero() {
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return false
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}
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}
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return true
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}
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