content: package com.alibaba.metrics.prometheus.samplebuilder;
  
  import com.alibaba.metrics.MetricName;
  import io.prometheus.client.Collector;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  public class DefaultSampleBuilder implements SampleBuilder{
  
      @Override
      public Collector.MetricFamilySamples.Sample createSample(MetricName metricName, String suffix,
                                                               List<String> labelNames, List<String> labelValues,
                                                               double value) {
          String name = metricName.getKey();
          String nameSuffix = suffix == null ? "" : suffix;
          Map<String, String> tags = metricName.getTags();
          List<String> tagNames = labelNames == null ? new ArrayList<String>() : labelNames;
          List<String> tagValues = labelValues == null ? new ArrayList<String>() : labelValues;
          if (tags != null && tags.size() > 0) {
              for (Map.Entry<String, String> entry : tags.entrySet()) {
                  tagNames.add(entry.getKey());
                  tagValues.add(entry.getValue());
              }
          }
          return new Collector.MetricFamilySamples.Sample(
                  Collector.sanitizeMetricName(name + nameSuffix),
                  tagNames,
                  tagValues,
                  value);
      }
  }
  