org.apache.kafka.streams.state.internals.metrics.RocksDBMetricsRecordingTrigger Maven / Gradle / Ivy
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* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.kafka.streams.state.internals.metrics;
import org.apache.kafka.common.utils.Time;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
public class RocksDBMetricsRecordingTrigger implements Runnable {
private final Map metricsRecordersToTrigger = new ConcurrentHashMap<>();
private final Time time;
public RocksDBMetricsRecordingTrigger(final Time time) {
this.time = time;
}
public void addMetricsRecorder(final RocksDBMetricsRecorder metricsRecorder) {
final String metricsRecorderName = metricsRecorderName(metricsRecorder);
if (metricsRecordersToTrigger.containsKey(metricsRecorderName)) {
throw new IllegalStateException("RocksDB metrics recorder for store \"" + metricsRecorder.storeName() +
"\" of task " + metricsRecorder.taskId().toString() + " has already been added. "
+ "This is a bug in Kafka Streams.");
}
metricsRecordersToTrigger.put(metricsRecorderName, metricsRecorder);
}
public void removeMetricsRecorder(final RocksDBMetricsRecorder metricsRecorder) {
final RocksDBMetricsRecorder removedMetricsRecorder =
metricsRecordersToTrigger.remove(metricsRecorderName(metricsRecorder));
if (removedMetricsRecorder == null) {
throw new IllegalStateException("No RocksDB metrics recorder for store "
+ "\"" + metricsRecorder.storeName() + "\" of task " + metricsRecorder.taskId() + " could be found. "
+ "This is a bug in Kafka Streams.");
}
}
private String metricsRecorderName(final RocksDBMetricsRecorder metricsRecorder) {
return metricsRecorder.taskId().toString() + "-" + metricsRecorder.storeName();
}
@Override
public void run() {
final long now = time.milliseconds();
for (final RocksDBMetricsRecorder metricsRecorder : metricsRecordersToTrigger.values()) {
metricsRecorder.record(now);
}
}
}