Function combineProfiles

internal/driver/fetch.go:244–275

(profiles []*profile.Profile, msrcs []plugin.MappingSources)

}

func combineProfiles(profiles []*profile.Profile, msrcs []plugin.MappingSources) (*profile.Profile, plugin.MappingSources, error) {
	// Merge profiles.
	//
	// The merge call below only treats exactly matching sample type lists as
	// compatible and will fail otherwise. Make the profiles' sample types
	// compatible for the merge, see CompatibilizeSampleTypes() doc for details.
	if err := profile.CompatibilizeSampleTypes(profiles); err != nil {
		return nil, nil, err
	}
	if err := measurement.ScaleProfiles(profiles); err != nil {
		return nil, nil, err
	}

	// Avoid expensive work for the common case of a single profile/src.
	if len(profiles) == 1 && len(msrcs) == 1 {
		return profiles[0], msrcs[0], nil
	}

	p, err := profile.Merge(profiles)
	if err != nil {
		return nil, nil, err
	}

	// Combine mapping sources.
	msrc := make(plugin.MappingSources)
	for _, ms := range msrcs {
		for m, s := range ms {
			msrc[m] = append(msrc[m], s...)
		}
	}
	return p, msrc, nil
}

type profileSource struct {
	addr   string