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Simplify prometheus metrics adapter (#1343) 

Signed-off-by: Bogdan Drutu <bogdandrutu@gmail.com>
This commit is contained in:
Bogdan Drutu 2020-06-17 13:57:37 -07:00 committed by GitHub
parent 2312932a76
commit 3ed3db3aa8
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 24 deletions
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42
exporters/prometheus/src/main/java/io/opentelemetry/exporters/prometheus/MetricAdapter.java
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@ -105,18 +105,7 @@ final class MetricAdapter {
if (descriptor.getConstantLabels().size() != 0) {
constLabelNames = new ArrayList<>(descriptor.getConstantLabels().size());
constLabelValues = new ArrayList<>(descriptor.getConstantLabels().size());
final List<String> finalConstLabelNames = constLabelNames;
final List<String> finalConstLabelValues = constLabelValues;
descriptor
.getConstantLabels()
.forEach(
new KeyValueConsumer<String>() {
@Override
public void consume(String key, String value) {
finalConstLabelNames.add(toLabelName(key));
finalConstLabelValues.add(value == null ? "" : value);
}
});
descriptor.getConstantLabels().forEach(new Consumer(constLabelNames, constLabelValues));
}
for (Point point : points) {
@ -131,18 +120,7 @@ final class MetricAdapter {
labelValues.addAll(constLabelValues);
// TODO: Use a cache(map) of converted label names to avoid sanitization multiple times
final List<String> finalLabelNames = labelNames;
final List<String> finalLabelValues = labelValues;
point
.getLabels()
.forEach(
new KeyValueConsumer<String>() {
@Override
public void consume(String key, String value) {
finalLabelNames.add(toLabelName(key));
finalLabelValues.add(value == null ? "" : value);
}
});
point.getLabels().forEach(new Consumer(labelNames, labelValues));
}
switch (descriptor.getType()) {
@ -169,6 +147,22 @@ final class MetricAdapter {
return Collector.sanitizeMetricName(labelKey);
}
private static final class Consumer implements KeyValueConsumer<String> {
final List<String> labelNames;
final List<String> labelValues;
private Consumer(List<String> labelNames, List<String> labelValues) {
this.labelNames = labelNames;
this.labelValues = labelValues;
}
@Override
public void consume(String key, String value) {
labelNames.add(toLabelName(key));
labelValues.add(value == null ? "" : value);
}
}
private static void addSummarySamples(
SummaryPoint summaryPoint,
String name,