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* the Apache License, Version 2.0 (the "License"); you may
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* 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
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package org.elasticsearch.monitor.os;
import org.apache.lucene.util.Constants;
import org.elasticsearch.test.ESTestCase;
import java.util.Arrays;
import java.util.List;
import static org.hamcrest.Matchers.allOf;
import static org.hamcrest.Matchers.anyOf;
import static org.hamcrest.Matchers.both;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.greaterThan;
import static org.hamcrest.Matchers.greaterThanOrEqualTo;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.lessThanOrEqualTo;
import static org.hamcrest.Matchers.notNullValue;
public class OsProbeTests extends ESTestCase {
private final OsProbe probe = OsProbe.getInstance();
public void testOsInfo() {
int allocatedProcessors = randomIntBetween(1, Runtime.getRuntime().availableProcessors());
long refreshInterval = randomBoolean() ? -1 : randomNonNegativeLong();
OsInfo info = probe.osInfo(refreshInterval, allocatedProcessors);
assertNotNull(info);
assertEquals(refreshInterval, info.getRefreshInterval());
assertEquals(Constants.OS_NAME, info.getName());
assertEquals(Constants.OS_ARCH, info.getArch());
assertEquals(Constants.OS_VERSION, info.getVersion());
assertEquals(allocatedProcessors, info.getAllocatedProcessors());
assertEquals(Runtime.getRuntime().availableProcessors(), info.getAvailableProcessors());
}
public void testOsStats() {
OsStats stats = probe.osStats();
assertNotNull(stats);
assertThat(stats.getTimestamp(), greaterThan(0L));
assertThat(stats.getCpu().getPercent(), anyOf(equalTo((short) -1),
is(both(greaterThanOrEqualTo((short) 0)).and(lessThanOrEqualTo((short) 100)))));
double[] loadAverage = stats.getCpu().getLoadAverage();
if (loadAverage != null) {
assertThat(loadAverage.length, equalTo(3));
}
if (Constants.WINDOWS) {
// load average is unavailable on Windows
assertNull(loadAverage);
} else if (Constants.LINUX) {
// we should be able to get the load average
assertNotNull(loadAverage);
assertThat(loadAverage[0], greaterThanOrEqualTo((double) 0));
assertThat(loadAverage[1], greaterThanOrEqualTo((double) 0));
assertThat(loadAverage[2], greaterThanOrEqualTo((double) 0));
} else if (Constants.MAC_OS_X) {
// one minute load average is available, but 10-minute and 15-minute load averages are not
assertNotNull(loadAverage);
assertThat(loadAverage[0], greaterThanOrEqualTo((double) 0));
assertThat(loadAverage[1], equalTo((double) -1));
assertThat(loadAverage[2], equalTo((double) -1));
} else {
// unknown system, but the best case is that we have the one-minute load average
if (loadAverage != null) {
assertThat(loadAverage[0], anyOf(equalTo((double) -1), greaterThanOrEqualTo((double) 0)));
assertThat(loadAverage[1], equalTo((double) -1));
assertThat(loadAverage[2], equalTo((double) -1));
}
}
assertNotNull(stats.getMem());
assertThat(stats.getMem().getTotal().getBytes(), greaterThan(0L));
assertThat(stats.getMem().getFree().getBytes(), greaterThan(0L));
assertThat(stats.getMem().getFreePercent(), allOf(greaterThanOrEqualTo((short) 0), lessThanOrEqualTo((short) 100)));
assertThat(stats.getMem().getUsed().getBytes(), greaterThan(0L));
assertThat(stats.getMem().getUsedPercent(), allOf(greaterThanOrEqualTo((short) 0), lessThanOrEqualTo((short) 100)));
assertNotNull(stats.getSwap());
assertNotNull(stats.getSwap().getTotal());
long total = stats.getSwap().getTotal().getBytes();
if (total > 0) {
assertThat(stats.getSwap().getTotal().getBytes(), greaterThan(0L));
assertThat(stats.getSwap().getFree().getBytes(), greaterThan(0L));
assertThat(stats.getSwap().getUsed().getBytes(), greaterThanOrEqualTo(0L));
} else {
// On platforms with no swap
assertThat(stats.getSwap().getTotal().getBytes(), equalTo(0L));
assertThat(stats.getSwap().getFree().getBytes(), equalTo(0L));
assertThat(stats.getSwap().getUsed().getBytes(), equalTo(0L));
}
if (Constants.LINUX) {
if (stats.getCgroup() != null) {
assertThat(stats.getCgroup().getCpuAcctControlGroup(), notNullValue());
assertThat(stats.getCgroup().getCpuAcctUsageNanos(), greaterThan(0L));
assertThat(stats.getCgroup().getCpuCfsQuotaMicros(), anyOf(equalTo(-1L), greaterThanOrEqualTo(0L)));
assertThat(stats.getCgroup().getCpuCfsPeriodMicros(), greaterThanOrEqualTo(0L));
assertThat(stats.getCgroup().getCpuStat().getNumberOfElapsedPeriods(), greaterThanOrEqualTo(0L));
assertThat(stats.getCgroup().getCpuStat().getNumberOfTimesThrottled(), greaterThanOrEqualTo(0L));
assertThat(stats.getCgroup().getCpuStat().getTimeThrottledNanos(), greaterThanOrEqualTo(0L));
}
} else {
assertNull(stats.getCgroup());
}
}
public void testGetSystemLoadAverage() {
assumeTrue("test runs on Linux only", Constants.LINUX);
final OsProbe probe = new OsProbe() {
@Override
String readProcLoadavg() {
return "1.51 1.69 1.99 3/417 23251";
}
};
final double[] systemLoadAverage = probe.getSystemLoadAverage();
assertNotNull(systemLoadAverage);
assertThat(systemLoadAverage.length, equalTo(3));
// avoid silliness with representing doubles
assertThat(systemLoadAverage[0], equalTo(Double.parseDouble("1.51")));
assertThat(systemLoadAverage[1], equalTo(Double.parseDouble("1.69")));
assertThat(systemLoadAverage[2], equalTo(Double.parseDouble("1.99")));
}
public void testCgroupProbe() {
assumeTrue("test runs on Linux only", Constants.LINUX);
final boolean areCgroupStatsAvailable = randomBoolean();
final String hierarchy = randomAlphaOfLength(16);
final OsProbe probe = new OsProbe() {
@Override
List<String> readProcSelfCgroup() {
return Arrays.asList(
"10:freezer:/",
"9:net_cls,net_prio:/",
"8:pids:/",
"7:blkio:/",
"6:memory:/",
"5:devices:/user.slice",
"4:hugetlb:/",
"3:perf_event:/",
"2:cpu,cpuacct,cpuset:/" + hierarchy,
"1:name=systemd:/user.slice/user-1000.slice/session-2359.scope",
"0::/cgroup2");
}
@Override
String readSysFsCgroupCpuAcctCpuAcctUsage(String controlGroup) {
assertThat(controlGroup, equalTo("/" + hierarchy));
return "364869866063112";
}
@Override
String readSysFsCgroupCpuAcctCpuCfsPeriod(String controlGroup) {
assertThat(controlGroup, equalTo("/" + hierarchy));
return "100000";
}
@Override
String readSysFsCgroupCpuAcctCpuAcctCfsQuota(String controlGroup) {
assertThat(controlGroup, equalTo("/" + hierarchy));
return "50000";
}
@Override
List<String> readSysFsCgroupCpuAcctCpuStat(String controlGroup) {
return Arrays.asList(
"nr_periods 17992",
"nr_throttled 1311",
"throttled_time 139298645489");
}
@Override
boolean areCgroupStatsAvailable() {
return areCgroupStatsAvailable;
}
};
final OsStats.Cgroup cgroup = probe.osStats().getCgroup();
if (areCgroupStatsAvailable) {
assertNotNull(cgroup);
assertThat(cgroup.getCpuAcctControlGroup(), equalTo("/" + hierarchy));
assertThat(cgroup.getCpuAcctUsageNanos(), equalTo(364869866063112L));
assertThat(cgroup.getCpuControlGroup(), equalTo("/" + hierarchy));
assertThat(cgroup.getCpuCfsPeriodMicros(), equalTo(100000L));
assertThat(cgroup.getCpuCfsQuotaMicros(), equalTo(50000L));
assertThat(cgroup.getCpuStat().getNumberOfElapsedPeriods(), equalTo(17992L));
assertThat(cgroup.getCpuStat().getNumberOfTimesThrottled(), equalTo(1311L));
assertThat(cgroup.getCpuStat().getTimeThrottledNanos(), equalTo(139298645489L));
} else {
assertNull(cgroup);
}
}
}