Created
July 11, 2025 19:45
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| function getProducerStats(topic) { | |
| var kafkaProducers = heap.objects('org.apache.kafka.clients.producer.KafkaProducer', false); | |
| while(kafkaProducers.hasMoreElements()) { | |
| var next = kafkaProducers.nextElement(); | |
| if (next.clientId.toString().contains(topic)) { | |
| return printProducerStats(next.metrics.metrics); | |
| } | |
| } | |
| } | |
| function printKafkaMetric(value) { | |
| var metricClass = classof(value.metricValueProvider).name | |
| var returnValue = {} | |
| // return value; | |
| switch(metricClass) { | |
| case "org.apache.kafka.common.metrics.stats.Avg": | |
| if (value.metricValueProvider.samples.elementData[0] != null) { | |
| returnValue = value.metricValueProvider.samples.elementData[0].value; | |
| } | |
| break; | |
| case "org.apache.kafka.common.metrics.stats.Rate": | |
| if (value.metricValueProvider.stat == null) { | |
| returnValue = value.metricValueProvider; | |
| } else if (value.metricValueProvider.stat.samples.elementData[0] != null) { | |
| returnValue["VALUE"] = value.metricValueProvider.stat.samples.elementData[0].value | |
| returnValue["UNIT"] = value.metricValueProvider.unit.name.toString() | |
| } else { | |
| returnValue = value.metricValueProvider; | |
| } | |
| break; | |
| case "org.apache.kafka.common.metrics.stats.CumulativeSum": | |
| returnValue = value.metricValueProvider.total; | |
| break; | |
| case "org.apache.kafka.common.utils.AppInfoParser$ImmutableValue": | |
| returnValue = value.metricValueProvider.value; | |
| break; | |
| default: | |
| returnValue = metricClass; | |
| // returnValue = value.metricValueProvider; | |
| } | |
| var descriptionAndValue = {}; | |
| descriptionAndValue["DESCRIPTION"] = value.metricName.description.toString(); | |
| descriptionAndValue["VALUE"] = returnValue; | |
| return descriptionAndValue; | |
| } | |
| function printProducerStats(metrics) { | |
| var results = {}; | |
| var mapAsArray = toArray(metrics.table); | |
| for(i = 0; i < mapAsArray.length; i++) { | |
| var e = mapAsArray[i]; | |
| while (e != null) { | |
| if(e.key != null && e.val != null) { | |
| results[e.key.name] = printKafkaMetric(e.val); | |
| } | |
| e = e.next; | |
| } | |
| } | |
| return results; | |
| } | |
| getProducerStats("TopicName"); |
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This bit of OQL finds producer stats for a given topic in a heap dump.