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[METRICS] rewrite ClusterMetrics.PartitionMetric by java 17 record #1743

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May 14, 2023
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[METRICS] rewrite ClusterMetrics.PartitionMetric by java 17 record #1743

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16 changes: 2 additions & 14 deletions common/src/main/java/org/astraea/common/metrics/broker/ClusterMetrics.java
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Original file line number Diff line number Diff line change
Expand Up @@ -76,23 +76,11 @@ public static ClusterMetrics.Partition ofAlias(String alias) {
}

public List<PartitionMetric> fetch(MBeanClient client) {
return client.beans(ALL.get(this)).stream()
.map(PartitionMetric::new)
.collect(Collectors.toUnmodifiableList());
return client.beans(ALL.get(this)).stream().map(PartitionMetric::new).toList();
}
}

public static class PartitionMetric implements HasGauge<Integer> {
private final BeanObject beanObject;

public PartitionMetric(BeanObject beanObject) {
this.beanObject = beanObject;
}

@Override
public BeanObject beanObject() {
return beanObject;
}
public record PartitionMetric(BeanObject beanObject) implements HasGauge<Integer> {

public TopicPartition topicPartition() {
return partitionIndex().orElseThrow();
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