dsmiley commented on code in PR #2902:
URL: https://github.com/apache/solr/pull/2902#discussion_r1893230595
##########
solr/core/src/java/org/apache/solr/metrics/prometheus/core/SolrCoreCacheMetric.java:
##########
@@ -38,7 +37,7 @@ public SolrCoreCacheMetric(
public SolrCoreMetric parseLabels() {
String[] parsedMetric = metricName.split("\\.");
if (dropwizardMetric instanceof Gauge) {
- labels.put("cacheType", parsedMetric[2]);
+ labels.put("cacheType", parsedMetric[3]);
Review Comment:
Previously index 2 lined up with the sample above on line 33. But now; I
dunno. I suppose your data example string is now out of date.
Same comment as other source files you edited similarly.
##########
solr/core/src/java/org/apache/solr/handler/admin/MetricsHandler.java:
##########
@@ -186,10 +187,22 @@ private NamedList<Object>
handlePrometheusExport(SolrParams params) {
List<MetricType> metricTypes = parseMetricTypes(params);
List<MetricFilter> metricFilters =
metricTypes.stream().map(MetricType::asMetricFilter).collect(Collectors.toList());
+
Set<String> requestedRegistries = parseRegistries(params);
+ MetricRegistry mergedCoreRegistries = new MetricRegistry();
for (String registryName : requestedRegistries) {
MetricRegistry dropwizardRegistry = metricManager.registry(registryName);
+
+ // Merge all core registries into a single registry and
+ // append the core name to the metric to avoid duplicate metrics name
+ if (registryName.startsWith("solr.core")) {
+ mergedCoreRegistries.registerAll(
+
Arrays.stream(registryName.split("\\.")).skip(1).collect(Collectors.joining("_")),
Review Comment:
It'd be faster to do a substring on the index after the first period, and
then with the result of that, replace all periods with underscores. Having a
little utility method to do this with comment would ultimately be clearer IMO
##########
solr/core/src/java/org/apache/solr/metrics/prometheus/core/SolrCoreMetric.java:
##########
@@ -25,28 +26,26 @@
/** Base class is a wrapper to export a solr.core {@link
com.codahale.metrics.Metric} */
public abstract class SolrCoreMetric extends SolrMetric {
+
public String coreName;
- public SolrCoreMetric(
- Metric dropwizardMetric, String coreName, String metricName, boolean
cloudMode) {
+ public SolrCoreMetric(Metric dropwizardMetric, String metricName) {
super(dropwizardMetric, metricName);
- this.coreName = coreName;
- labels.put("core", coreName);
- if (cloudMode) {
- appendCloudModeLabels();
- }
- }
-
- private void appendCloudModeLabels() {
- Matcher m = CLOUD_CORE_PATTERN.matcher(coreName);
- if (m.find()) {
- labels.put("collection", m.group(1));
- labels.put("shard", m.group(2));
- labels.put("replica", m.group(3));
+ Matcher cloudPattern = CLOUD_CORE_PATTERN.matcher(metricName);
+ Matcher standalonePattern = STANDALONE_CORE_PATTERN.matcher(metricName);
+ if (cloudPattern.find()) {
+ coreName = cloudPattern.group(1);
+ labels.put("core", cloudPattern.group(1));
+ labels.put("collection", cloudPattern.group(2));
+ labels.put("shard", cloudPattern.group(3));
+ labels.put("replica", cloudPattern.group(4));
Review Comment:
I believe it's possible to have named groups in a regular expression. If
you enhance your regular expressions as such, you could generically apply the
pattern with Matcher and extract all named groups without hard-coding the
expectations separate from the regular expression, which is annoying and
error-prone to maintain.
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