func newExternalSinkManager(externalSinks []sink_api.ExternalSink) (ExternalSinkManager, error) {
// Get supported metrics.
supportedMetrics := sink_api.SupportedStatMetrics()
for i := range supportedMetrics {
supportedMetrics[i].Labels = sink_api.SupportedLabels()
}
// Create the metrics.
descriptors := make([]sink_api.MetricDescriptor, 0, len(supportedMetrics))
for _, supported := range supportedMetrics {
descriptors = append(descriptors, supported.MetricDescriptor)
}
for _, externalSink := range externalSinks {
err := externalSink.Register(descriptors)
if err != nil {
return nil, err
}
}
decoder := sink_api.NewDecoder()
return &externalSinkManager{
externalSinks: externalSinks,
decoder: decoder,
}, nil
}
// NewExternalSinkManager returns an external sink manager that will manage pushing data to all
// the sinks in 'externalSinks', which is a map of sink name to ExternalSink object.
func NewExternalSinkManager(externalSinks []sink_api.ExternalSink) (ExternalSinkManager, error) {
m := &externalSinkManager{
decoder: sink_api_old.NewDecoder(),
}
if externalSinks != nil {
if err := m.SetSinks(externalSinks); err != nil {
return nil, err
}
}
return m, nil
}