io.trino.memory.LocalMemoryManagerExporter Maven / Gradle / Ivy
/*
* 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.trino.memory;
import com.google.inject.Inject;
import jakarta.annotation.PreDestroy;
import org.weakref.jmx.JmxException;
import org.weakref.jmx.MBeanExporter;
import org.weakref.jmx.ObjectNames;
import static java.util.Objects.requireNonNull;
public final class LocalMemoryManagerExporter
{
public static final String EXPORTED_POOL_NAME = "general";
private final MBeanExporter exporter;
private final boolean poolExported;
@Inject
public LocalMemoryManagerExporter(LocalMemoryManager memoryManager, MBeanExporter exporter)
{
this.exporter = requireNonNull(exporter, "exporter is null");
boolean poolExportedLocal = false;
try {
this.exporter.exportWithGeneratedName(memoryManager.getMemoryPool(), MemoryPool.class, EXPORTED_POOL_NAME);
poolExportedLocal = true;
}
catch (JmxException e) {
// ignored
}
this.poolExported = poolExportedLocal;
}
@PreDestroy
public void destroy()
{
if (!poolExported) {
return;
}
String objectName = ObjectNames.builder(MemoryPool.class, EXPORTED_POOL_NAME).build();
try {
exporter.unexport(objectName);
}
catch (JmxException e) {
// ignored
}
}
}