src/internal/trace/v2/testdata/cmd/gotracevalidate/main.go

   1 // Copyright 2023 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package main
   6
   7 import (
   8         "flag"
   9         "fmt"
  10         "io"
  11         "log"
  12         "os"
  13
  14         "internal/trace/v2"
  15         "internal/trace/v2/testtrace"
  16 )
  17
  18 func init() {
  19         flag.Usage = func() {
  20                 fmt.Fprintf(flag.CommandLine.Output(), "Usage: %s\n", os.Args[0])
  21                 fmt.Fprintf(flag.CommandLine.Output(), "\n")
  22                 fmt.Fprintf(flag.CommandLine.Output(), "Accepts a trace at stdin and validates it.\n")
  23                 flag.PrintDefaults()
  24         }
  25         log.SetFlags(0)
  26 }
  27
  28 var logEvents = flag.Bool("log-events", false, "whether to log events")
  29
  30 func main() {
  31         flag.Parse()
  32
  33         r, err := trace.NewReader(os.Stdin)
  34         if err != nil {
  35                 log.Fatal(err)
  36         }
  37         v := testtrace.NewValidator()
  38         for {
  39                 ev, err := r.ReadEvent()
  40                 if err == io.EOF {
  41                         break
  42                 }
  43                 if err != nil {
  44                         log.Fatal(err)
  45                 }
  46                 if *logEvents {
  47                         log.Println(ev.String())
  48                 }
  49                 if err := v.Event(ev); err != nil {
  50                         log.Fatal(err)
  51                 }
  52         }
  53 }