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
}
func (self *externalSinkManager) DebugInfo() string {
desc := "External Sinks\n"
// Add metrics being exported.
desc += "\tExported metrics:"
for _, supported := range sink_api.SupportedStatMetrics() {
desc += fmt.Sprintf("\t\t%s: %s", supported.Name, supported.Description)
}
// Add labels being used.
desc += "\tExported labels:"
for _, label := range sink_api.SupportedLabels() {
desc += fmt.Sprintf("\t\t%s: %s", label.Key, label.Description)
}
desc += "\n\tExternal Sinks:"
for _, externalSink := range self.externalSinks {
desc += fmt.Sprintf("\n\t\t%s", externalSink.DebugInfo())
}
return desc
}