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feat(triggers): Add Support for defining MBean Triggers to the cryost…
…at agent (#197) Signed-off-by: jmatsuok <[email protected]> Co-authored-by: Andrew Azores <[email protected]>
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112
src/main/java/io/cryostat/agent/FlightRecorderHelper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| /* | ||
| * Copyright The Cryostat Authors. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
| package io.cryostat.agent; | ||
|
|
||
| import java.lang.management.ManagementFactory; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| import edu.umd.cs.findbugs.annotations.SuppressFBWarnings; | ||
| import jdk.jfr.FlightRecorder; | ||
| import jdk.jfr.Recording; | ||
| import jdk.management.jfr.ConfigurationInfo; | ||
| import jdk.management.jfr.FlightRecorderMXBean; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| public class FlightRecorderHelper { | ||
|
|
||
| private final FlightRecorderMXBean bean = | ||
| ManagementFactory.getPlatformMXBean(FlightRecorderMXBean.class); | ||
| private final Logger log = LoggerFactory.getLogger(getClass()); | ||
|
|
||
| // FIXME this is repeated logic shared with Harvester startRecording | ||
| public void startRecording(String templateNameOrLabel) { | ||
| getTemplate(templateNameOrLabel) | ||
| .ifPresentOrElse( | ||
| c -> { | ||
| long recordingId = bean.newRecording(); | ||
| bean.setPredefinedConfiguration(recordingId, c.getName()); | ||
| String recoringName = | ||
| String.format("cryostat-smart-trigger-%d", recordingId); | ||
| bean.setRecordingOptions( | ||
| recordingId, Map.of("name", recoringName, "disk", "true")); | ||
| bean.startRecording(recordingId); | ||
| log.info( | ||
| "Started recording \"{}\" using template \"{}\"", | ||
| recoringName, | ||
| templateNameOrLabel); | ||
| }, | ||
| () -> | ||
| log.error( | ||
| "Cannot start recording with template named or labelled {}", | ||
| templateNameOrLabel)); | ||
| } | ||
|
|
||
| public Optional<ConfigurationInfo> getTemplate(String nameOrLabel) { | ||
| return bean.getConfigurations().stream() | ||
| .filter(c -> c.getName().equals(nameOrLabel) || c.getLabel().equals(nameOrLabel)) | ||
| .findFirst(); | ||
| } | ||
|
|
||
| public boolean isValidTemplate(String nameOrLabel) { | ||
| return getTemplate(nameOrLabel).isPresent(); | ||
| } | ||
|
|
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| public List<RecordingInfo> getRecordings() { | ||
| return FlightRecorder.getFlightRecorder().getRecordings().stream() | ||
| .map(RecordingInfo::new) | ||
| .collect(Collectors.toList()); | ||
| } | ||
|
|
||
| @SuppressFBWarnings(value = "URF_UNREAD_FIELD") | ||
| public static class RecordingInfo { | ||
|
|
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| public final long id; | ||
| public final String name; | ||
| public final String state; | ||
| public final Map<String, String> options; | ||
| public final long startTime; | ||
| public final long duration; | ||
| public final boolean isContinuous; | ||
| public final boolean toDisk; | ||
| public final long maxSize; | ||
| public final long maxAge; | ||
|
|
||
| RecordingInfo(Recording rec) { | ||
| this.id = rec.getId(); | ||
| this.name = rec.getName(); | ||
| this.state = rec.getState().name(); | ||
| this.options = rec.getSettings(); | ||
| if (rec.getStartTime() != null) { | ||
| this.startTime = rec.getStartTime().toEpochMilli(); | ||
| } else { | ||
| this.startTime = 0; | ||
| } | ||
| this.isContinuous = rec.getDuration() == null; | ||
| this.duration = this.isContinuous ? 0 : rec.getDuration().toMillis(); | ||
| this.toDisk = rec.isToDisk(); | ||
| this.maxSize = rec.getMaxSize(); | ||
| if (rec.getMaxAge() != null) { | ||
| this.maxAge = rec.getMaxAge().toMillis(); | ||
| } else { | ||
| this.maxAge = 0; | ||
| } | ||
| } | ||
| } | ||
| } |
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