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Add cgroup cpu/mem/disk usage metrics (#16472)
* Add cgroup cpu/mem usage metrics * checks * comments * docs fix * add disk metrics * fapi check * checkstyle * issues * spelling * change asserts * checks * use proc builder instead of runtime * specify charset * spotbug
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processing/src/main/java/org/apache/druid/java/util/metrics/CgroupDiskMonitor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with 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, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
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| package org.apache.druid.java.util.metrics; | ||
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| import com.google.common.collect.ImmutableMap; | ||
| import org.apache.druid.java.util.emitter.service.ServiceEmitter; | ||
| import org.apache.druid.java.util.emitter.service.ServiceMetricEvent; | ||
| import org.apache.druid.java.util.metrics.cgroups.CgroupDiscoverer; | ||
| import org.apache.druid.java.util.metrics.cgroups.Disk; | ||
| import org.apache.druid.java.util.metrics.cgroups.ProcSelfCgroupDiscoverer; | ||
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| import java.util.Map; | ||
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| public class CgroupDiskMonitor extends FeedDefiningMonitor | ||
| { | ||
| final CgroupDiscoverer cgroupDiscoverer; | ||
| final Map<String, String[]> dimensions; | ||
| private final KeyedDiff diff = new KeyedDiff(); | ||
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| public CgroupDiskMonitor(CgroupDiscoverer cgroupDiscoverer, final Map<String, String[]> dimensions, String feed) | ||
| { | ||
| super(feed); | ||
| this.cgroupDiscoverer = cgroupDiscoverer; | ||
| this.dimensions = dimensions; | ||
| } | ||
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| public CgroupDiskMonitor(final Map<String, String[]> dimensions, String feed) | ||
| { | ||
| this(new ProcSelfCgroupDiscoverer(), dimensions, feed); | ||
| } | ||
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| public CgroupDiskMonitor(final Map<String, String[]> dimensions) | ||
| { | ||
| this(dimensions, DEFAULT_METRICS_FEED); | ||
| } | ||
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| public CgroupDiskMonitor() | ||
| { | ||
| this(ImmutableMap.of()); | ||
| } | ||
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| @Override | ||
| public boolean doMonitor(ServiceEmitter emitter) | ||
| { | ||
| Map<String, Disk.Metrics> snapshot = new Disk(cgroupDiscoverer).snapshot(); | ||
| for (Map.Entry<String, Disk.Metrics> entry : snapshot.entrySet()) { | ||
| final Map<String, Long> stats = diff.to( | ||
| entry.getKey(), | ||
| ImmutableMap.<String, Long>builder() | ||
| .put("cgroup/disk/read/bytes", entry.getValue().getReadBytes()) | ||
| .put("cgroup/disk/read/count", entry.getValue().getReadCount()) | ||
| .put("cgroup/disk/write/bytes", entry.getValue().getWriteBytes()) | ||
| .put("cgroup/disk/write/count", entry.getValue().getWriteCount()) | ||
| .build() | ||
| ); | ||
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| if (stats != null) { | ||
| final ServiceMetricEvent.Builder builder = builder() | ||
| .setDimension("diskName", entry.getValue().getDiskName()); | ||
| MonitorUtils.addDimensionsToBuilder(builder, dimensions); | ||
| for (Map.Entry<String, Long> stat : stats.entrySet()) { | ||
| emitter.emit(builder.setMetric(stat.getKey(), stat.getValue())); | ||
| } | ||
| } | ||
| } | ||
| return true; | ||
| } | ||
| } |
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