/**
* Copyright 2017 Pivotal Software, Inc.
*
* 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 org.springframework.metrics.instrument.binder;
import org.springframework.metrics.instrument.MeterRegistry;
import org.springframework.metrics.instrument.Tag;
import java.lang.management.BufferPoolMXBean;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryPoolMXBean;
import static java.util.Collections.singletonList;
/**
* Record metrics that report utilization of various memory and buffer pools.
*
* @see MemoryPoolMXBean
* @see BufferPoolMXBean
*/
public class JvmMemoryMetrics implements MeterBinder {
@Override
public void bindTo(MeterRegistry registry) {
for (BufferPoolMXBean bufferPoolBean : ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class)) {
Iterable<Tag> tags = singletonList(Tag.of("id", bufferPoolBean.getName()));
registry.gauge("jvm_buffer_count", tags, bufferPoolBean, BufferPoolMXBean::getCount);
registry.gauge("jvm_buffer_memory_used", tags, bufferPoolBean, BufferPoolMXBean::getMemoryUsed);
registry.gauge("jvm_buffer_total_capacity", tags, bufferPoolBean, BufferPoolMXBean::getTotalCapacity);
}
for (MemoryPoolMXBean memoryPoolBean : ManagementFactory.getPlatformMXBeans(MemoryPoolMXBean.class)) {
Iterable<Tag> tags = singletonList(Tag.of("id", memoryPoolBean.getName()));
registry.gauge("jvm_memory_used", tags, memoryPoolBean, (mem) -> mem.getUsage().getUsed());
registry.gauge("jvm_memory_committed", tags, memoryPoolBean, (mem) -> mem.getUsage().getCommitted());
registry.gauge("jvm_memory_max", tags, memoryPoolBean, (mem) -> mem.getUsage().getMax());
}
}
}