georgelza commented on PR #22:
URL: 
https://github.com/apache/flink-connector-prometheus/pull/22#issuecomment-2930733548

   Hi  Daren
   
   I actually think the way you defining the labels are very elegant.
   
   G
   
   On Mon, Jun 2, 2025 at 3:27 PM darenwkt ***@***.***> wrote:
   
   > ***@***.**** commented on this pull request.
   > ------------------------------
   >
   > In
   > 
flink-connector-prometheus/src/main/java/org/apache/flink/connector/prometheus/table/RowDataToPrometheusTimeSeriesConverter.java
   > 
<https://github.com/apache/flink-connector-prometheus/pull/22#discussion_r2121153890>
   > :
   >
   > > +        PrometheusTimeSeries.Builder builder = 
PrometheusTimeSeries.builder();
   > +        Double sampleValue = null;
   > +        Long sampleTimestamp = null;
   > +
   > +        for (int i = 0; i < fields.size(); i++) {
   > +            DataTypes.Field field = fields.get(i);
   > +            RowData.FieldGetter fieldGetter =
   > +                    
createFieldGetter(fields.get(i).getDataType().getLogicalType(), i);
   > +            FieldValue fieldValue = new 
FieldValue(fieldGetter.getFieldOrNull(row));
   > +            String fieldName = field.getName();
   > +
   > +            if (fieldName.equals(prometheusConfig.getMetricName())) {
   > +                builder.withMetricName(fieldValue.getStringValue());
   > +            } else if 
(fieldName.equals(prometheusConfig.getMetricSampleKey())) {
   > +                sampleValue = fieldValue.getDoubleValue();
   > +            } else if 
(prometheusConfig.getLabelKeys().contains(fieldName)) {
   >
   > I may require further clarification on the question here, but my
   > understanding is that this approach allows setting any label name actually,
   > for example, the following label names are all valid:
   >
   >   'metric.label.keys' = '[my_label_1, my_label_2, ***@***.***, 123%label, 
label(123)]'
   >
   > —
   > Reply to this email directly, view it on GitHub
   > 
<https://github.com/apache/flink-connector-prometheus/pull/22#discussion_r2121153890>,
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