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/*
* 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.
*/
package org.apache.flink.runtime.metrics.util;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.metrics.Gauge;
import org.apache.flink.metrics.MetricGroup;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import oshi.SystemInfo;
import oshi.hardware.GlobalMemory;
import oshi.hardware.HardwareAbstractionLayer;
/**
* Utility class to initialize system resource metrics.
*/
public class SystemResourcesMetricsInitializer {
private static final Logger LOG = LoggerFactory.getLogger(SystemResourcesMetricsInitializer.class);
public static void instantiateSystemMetrics(MetricGroup metricGroup, Time probeInterval) {
try {
MetricGroup system = metricGroup.addGroup("System");
SystemResourcesCounter systemResourcesCounter = new SystemResourcesCounter(probeInterval);
systemResourcesCounter.start();
SystemInfo systemInfo = new SystemInfo();
HardwareAbstractionLayer hardwareAbstractionLayer = systemInfo.getHardware();
instantiateMemoryMetrics(system.addGroup("Memory"), hardwareAbstractionLayer.getMemory());
instantiateSwapMetrics(system.addGroup("Swap"), hardwareAbstractionLayer.getMemory());
instantiateCPUMetrics(system.addGroup("CPU"), systemResourcesCounter);
instantiateNetworkMetrics(system.addGroup("Network"), systemResourcesCounter);
}
catch (NoClassDefFoundError ex) {
LOG.warn(
"Failed to initialize system resource metrics because of missing class definitions." +
" Did you forget to explicitly add the oshi-core optional dependency?",
ex);
}
}
private static void instantiateMemoryMetrics(MetricGroup metrics, GlobalMemory memory) {
metrics.>gauge("Available", memory::getAvailable);
metrics.>gauge("Total", memory::getTotal);
}
private static void instantiateSwapMetrics(MetricGroup metrics, GlobalMemory memory) {
metrics.>gauge("Used", memory::getSwapUsed);
metrics.>gauge("Total", memory::getSwapTotal);
}
private static void instantiateCPUMetrics(MetricGroup metrics, SystemResourcesCounter usageCounter) {
metrics.>gauge("Usage", usageCounter::getCpuUsage);
metrics.>gauge("Idle", usageCounter::getCpuIdle);
metrics.>gauge("Sys", usageCounter::getCpuSys);
metrics.>gauge("User", usageCounter::getCpuUser);
metrics.>gauge("IOWait", usageCounter::getIOWait);
metrics.>gauge("Nice", usageCounter::getCpuNice);
metrics.>gauge("Irq", usageCounter::getCpuIrq);
metrics.>gauge("SoftIrq", usageCounter::getCpuSoftIrq);
metrics.>gauge("Load1min", usageCounter::getCpuLoad1);
metrics.>gauge("Load5min", usageCounter::getCpuLoad5);
metrics.>gauge("Load15min", usageCounter::getCpuLoad15);
for (int i = 0; i < usageCounter.getProcessorsCount(); i++) {
final int processor = i;
metrics.>gauge(
String.format("UsageCPU%d", processor),
() -> usageCounter.getCpuUsagePerProcessor(processor));
}
}
private static void instantiateNetworkMetrics(MetricGroup metrics, SystemResourcesCounter usageCounter) {
for (int i = 0; i < usageCounter.getNetworkInterfaceNames().length; i++) {
MetricGroup interfaceGroup = metrics.addGroup(usageCounter.getNetworkInterfaceNames()[i]);
final int interfaceNo = i;
interfaceGroup.>gauge("ReceiveRate", () -> usageCounter.getReceiveRatePerInterface(interfaceNo));
interfaceGroup.>gauge("SendRate", () -> usageCounter.getSendRatePerInterface(interfaceNo));
}
}
}