func generate(interactive bool, prof *profile.Profile, obj plugin.ObjTool, ui plugin.UI, f *flags) error {
o, postProcess, err := parseOptions(f)
if err != nil {
return err
}
var w io.Writer
if *f.flagOutput == "" {
w = os.Stdout
} else {
ui.PrintErr("Generating report in ", *f.flagOutput)
outputFile, err := os.Create(*f.flagOutput)
if err != nil {
return err
}
defer outputFile.Close()
w = outputFile
}
if prof.Empty() {
return fmt.Errorf("profile is empty")
}
value, stype, unit := sampleFormat(prof, f)
o.SampleType = stype
rpt := report.New(prof, *o, value, unit)
// Do not apply filters if we're just generating a proto, so we
// still have all the data.
if o.OutputFormat != report.Proto {
// Delay applying focus/ignore until after creating the report so
// the report reflects the total number of samples.
if err := preprocess(prof, ui, f); err != nil {
return err
}
}
if postProcess == nil {
return report.Generate(w, rpt, obj)
}
var dot bytes.Buffer
if err = report.Generate(&dot, rpt, obj); err != nil {
return err
}
return postProcess(&dot, w, ui)
}
// filter filters the report with a focus regex. If no focus is provided,
// it reports back with the entire set of calls.
// Focus regex works on the package, type and function names. Filtered
// results will include parent samples from the call graph.
func (r *report) filter(cum bool, focus *regexp.Regexp) []string {
r.mu.Lock()
defer r.mu.Unlock()
if r.p == nil {
return nil
}
c := r.p.Copy()
c.FilterSamplesByName(focus, nil, nil)
rpt := goreport.NewDefault(c, goreport.Options{
OutputFormat: goreport.Text,
CumSort: cum,
PrintAddresses: true,
})
buf := bytes.NewBuffer(nil)
goreport.Generate(buf, rpt, nil)
return strings.Split(buf.String(), "\n")
}
