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[Feature-2927][common] Fix NEF when get info from OSUtils (#2927) (#2964)

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* [Feature-2927][common] Fix NEF when get info from OSUtils (#2927)

* Update OSUtils.java

Change java doc

Co-authored-by: gabry.wu <8545796+gabrywu@users.noreply.github.com>
This commit is contained in:
Yichao Yang 2020-06-14 11:17:12 +08:00 committed by GitHub
parent 9fd728908f
commit 0e7403e6a8
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 16 additions and 7 deletions
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15
dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/utils/OSUtils.java
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@ -53,6 +53,12 @@ public class OSUtils {
private static final SystemInfo SI = new SystemInfo();
public static final String TWO_DECIMAL = "0.00";
/**
* return -1 when the function can not get hardware env info
* e.g {@link OSUtils#loadAverage()} {@link OSUtils#cpuUsage()}
*/
public static final double NEGATIVE_ONE = -1;
private static HardwareAbstractionLayer hal = SI.getHardware();
private OSUtils() {}
@ -118,9 +124,11 @@ public class OSUtils {
*/
public static double loadAverage() {
double loadAverage = hal.getProcessor().getSystemLoadAverage();
if (Double.isNaN(loadAverage)) {
return NEGATIVE_ONE;
}
DecimalFormat df = new DecimalFormat(TWO_DECIMAL);
df.setRoundingMode(RoundingMode.HALF_UP);
return Double.parseDouble(df.format(loadAverage));
}
@ -133,10 +141,12 @@ public class OSUtils {
public static double cpuUsage() {
CentralProcessor processor = hal.getProcessor();
double cpuUsage = processor.getSystemCpuLoad();
if (Double.isNaN(cpuUsage)) {
return NEGATIVE_ONE;
}
DecimalFormat df = new DecimalFormat(TWO_DECIMAL);
df.setRoundingMode(RoundingMode.HALF_UP);
return Double.parseDouble(df.format(cpuUsage));
}
@ -393,7 +403,6 @@ public class OSUtils {
return null;
}
/**
* whether is macOS
* @return true if mac

8
dolphinscheduler-common/src/test/java/org/apache/dolphinscheduler/common/utils/OSUtilsTest.java
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@ -41,15 +41,15 @@ public class OSUtilsTest {
public void testOSMetric(){
if (!OSUtils.isWindows()) {
double availablePhysicalMemorySize = OSUtils.availablePhysicalMemorySize();
Assert.assertTrue(availablePhysicalMemorySize > 0.0f);
Assert.assertTrue(availablePhysicalMemorySize >= 0.0d);
double totalMemorySize = OSUtils.totalMemorySize();
Assert.assertTrue(totalMemorySize > 0.0f);
Assert.assertTrue(totalMemorySize >= 0.0d);
double loadAverage = OSUtils.loadAverage();
logger.info("loadAverage {}", loadAverage);
double memoryUsage = OSUtils.memoryUsage();
Assert.assertTrue(memoryUsage > 0.0f);
Assert.assertTrue(memoryUsage >= 0.0d);
double cpuUsage = OSUtils.cpuUsage();
Assert.assertTrue(cpuUsage > 0.0f);
Assert.assertTrue(cpuUsage >= 0.0d || cpuUsage == -1.0d);
} else {
// TODO window ut
}