dsmiley commented on code in PR #3164:
URL: https://github.com/apache/solr/pull/3164#discussion_r1948435790
##########
solr/core/src/java/org/apache/solr/metrics/prometheus/SolrPrometheusFormatter.java:
##########
@@ -206,6 +251,22 @@ public void collectGaugeDatapoint(
metricGauges.get(metricName).add(dataPoint);
}
+ /**
+ * Collects {@link
io.prometheus.metrics.model.snapshots.SummarySnapshot.SummaryDataPointSnapshot}
+ * and appends to existing metric or create new metric if name does not exist
+ *
+ * @param metricName Name of metric
+ * @param dataPoint Gauge datapoint to be collected
+ */
+ public void collectSummaryDatapoint(
+ String metricName, SummarySnapshot.SummaryDataPointSnapshot dataPoint) {
+ if (!metricSummaries.containsKey(metricName)) {
+ metricSummaries.put(metricName, new ArrayList<>());
+ }
+
+ metricSummaries.get(metricName).add(dataPoint);
Review Comment:
```suggestion
metricSummaries.computeIfAbsent(metricName, k -> new
ArrayList<>()).add(dataPoint);
```
##########
solr/core/src/java/org/apache/solr/metrics/prometheus/SolrPrometheusFormatter.java:
##########
@@ -176,6 +202,25 @@ public GaugeSnapshot.GaugeDataPointSnapshot
createGaugeDatapoint(double value, L
return
GaugeSnapshot.GaugeDataPointSnapshot.builder().value(value).labels(labels).build();
}
+ /**
+ * Create a {@link
io.prometheus.metrics.model.snapshots.SummarySnapshot.SummaryDataPointSnapshot}
+ * with labels
+ *
+ * @param count number of observations
+ * @param sum sum of all values
+ * @param quantiles quantile information
+ * @param labels set of name/values labels
+ */
+ public SummarySnapshot.SummaryDataPointSnapshot
createSummaryDataPointSnapshot(
+ long count, double sum, Quantiles quantiles, Labels labels) {
+ return SummarySnapshot.SummaryDataPointSnapshot.builder()
+ .count(count)
+ .sum(sum)
+ .labels(labels)
+ .quantiles(quantiles)
+ .build();
+ }
Review Comment:
I don't see why this is its own method, as you now feel the need to have
quite a number of lines here (including documentation). Just inline it.
##########
solr/core/src/java/org/apache/solr/metrics/prometheus/core/SolrCoreHandlerMetric.java:
##########
@@ -28,7 +28,7 @@ public class SolrCoreHandlerMetric extends SolrCoreMetric {
public static final String CORE_REQUESTS_TOTAL =
"solr_metrics_core_requests";
public static final String CORE_REQUESTS_UPDATE_HANDLER =
"solr_metrics_core_update_handler";
public static final String CORE_REQUESTS_TOTAL_TIME =
"solr_metrics_core_requests_time";
- public static final String CORE_REQUEST_TIMES =
"solr_metrics_core_average_request_time";
+ public static final String CORE_REQUEST_TIMES =
"solr_metrics_core_request_time";
Review Comment:
I love that feedback in general but not sure if there is a consistency issue
(like do this not just here but basically everywhere)
##########
solr/core/src/java/org/apache/solr/metrics/prometheus/SolrPrometheusFormatter.java:
##########
@@ -220,6 +281,11 @@ public MetricSnapshots collect() {
snapshots.add(
new GaugeSnapshot(new MetricMetadata(metricName),
metricGauges.get(metricName)));
}
+ for (String metricName : metricSummaries.keySet()) {
Review Comment:
Always iterate the entrySet or call forEach so you don't have to lookup the
value of each one separately
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