// Forks and re-runs your program to add panic monitoring. This function does
// not return on one process, instead listening on stderr of the other process,
// which returns nil.
//
// Related: https://godoc.org/github.com/bugsnag/panicwrap#BasicMonitor
func defaultPanicHandler() {
defer defaultNotifier.dontPanic()
err := panicwrap.BasicMonitor(func(output string) {
toNotify, err := errors.ParsePanic(output)
if err != nil {
defaultNotifier.Config.logf("bugsnag.handleUncaughtPanic: %v", err)
}
Notify(toNotify, SeverityError, Configuration{Synchronous: true})
})
if err != nil {
defaultNotifier.Config.logf("bugsnag.handleUncaughtPanic: %v", err)
}
}
func main() {
dir := flag.String("d", ".", "directory containing stack traces")
flag.Parse()
files, err := filepath.Glob(*dir + "/*")
if err != nil {
log.Fatalf("error globbing: %v\n", err)
}
var errs []*berrors.Error
var fnames []string
for _, f := range files {
r, err := ioutil.ReadFile(f)
if err != nil {
log.Printf("error reading %s: %v\n", f, err)
continue
}
e, err := berrors.ParsePanic(string(r))
if err != nil {
log.Printf("error parsing panic %s: %v\n", f, err)
continue
}
errs = append(errs, e)
fnames = append(fnames, f)
}
// TODO(dgryski): I made up these numbers. They "should" be computed
// from a human tagged corpus via algorithm 6 in
// http://research.microsoft.com/en-us/groups/sa/rebucket-icse2012.pdf
groups := rebucket.ClusterErrors(errs, 1, 1, 1)
fmt.Printf("groups=%v\n", groups)
for i, g := range groups {
fmt.Println("cluster", i)
for _, idx := range g.Idx {
fmt.Println("\t", fnames[idx])
}
fmt.Println()
}
}