// WriteStatusSummary generates a summary and immediately writes it to the given
// client.
func (mr *MetricsRecorder) WriteStatusSummary(ctx context.Context, db *client.DB) error {
mr.writeSummaryMu.Lock()
defer mr.writeSummaryMu.Unlock()
nodeStatus := mr.GetStatusSummary()
if nodeStatus != nil {
key := keys.NodeStatusKey(nodeStatus.Desc.NodeID)
// We use PutInline to store only a single version of the node status.
// There's not much point in keeping the historical versions as we keep
// all of the constituent data as timeseries. Further, due to the size
// of the build info in the node status, writing one of these every 10s
// will generate more versions than will easily fit into a range over
// the course of a day.
if err := db.PutInline(ctx, key, nodeStatus); err != nil {
return err
}
if log.V(2) {
statusJSON, err := json.Marshal(nodeStatus)
if err != nil {
log.Errorf(ctx, "error marshaling nodeStatus to json: %s", err)
}
log.Infof(ctx, "node %d status: %s", nodeStatus.Desc.NodeID, statusJSON)
}
}
return nil
}
