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Move MemoryPool JMX export out of LocalMemoryManager
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presto-main/src/main/java/com/facebook/presto/memory/LocalMemoryManagerExporter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| /* | ||
| * 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 com.facebook.presto.memory; | ||
|
|
||
| import org.weakref.jmx.JmxException; | ||
| import org.weakref.jmx.MBeanExporter; | ||
| import org.weakref.jmx.ObjectNames; | ||
|
|
||
| import javax.annotation.PreDestroy; | ||
| import javax.annotation.concurrent.GuardedBy; | ||
| import javax.inject.Inject; | ||
|
|
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
|
|
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| import static java.util.Objects.requireNonNull; | ||
|
|
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| public final class LocalMemoryManagerExporter | ||
| { | ||
| private final MBeanExporter exporter; | ||
| @GuardedBy("this") | ||
| private final List<MemoryPool> pools = new ArrayList<>(); | ||
|
|
||
| @Inject | ||
| public LocalMemoryManagerExporter(LocalMemoryManager memoryManager, MBeanExporter exporter) | ||
| { | ||
| this.exporter = requireNonNull(exporter, "exporter is null"); | ||
| for (MemoryPool pool : memoryManager.getPools()) { | ||
| addPool(pool); | ||
| } | ||
| } | ||
|
|
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| private synchronized void addPool(MemoryPool pool) | ||
| { | ||
| try { | ||
| String objectName = ObjectNames.builder(MemoryPool.class, pool.getId().toString()).build(); | ||
| exporter.export(objectName, pool); | ||
| pools.add(pool); | ||
| } | ||
| catch (JmxException e) { | ||
| // ignored | ||
| } | ||
| } | ||
|
|
||
| @PreDestroy | ||
| public synchronized void destroy() | ||
| { | ||
| for (MemoryPool pool : pools) { | ||
| String objectName = ObjectNames.builder(MemoryPool.class, pool.getId().toString()).build(); | ||
| try { | ||
| exporter.unexport(objectName); | ||
| } | ||
| catch (JmxException e) { | ||
| // ignored | ||
| } | ||
| } | ||
| pools.clear(); | ||
| } | ||
| } |
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