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Report the maximum number of file descriptors allowed by the OS.

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Jon Chambers
2020-10-09 19:39:12 -04:00
committed by Jon Chambers
parent 95428ab8b0
commit e9b0829860
2 changed files with 25 additions and 0 deletions
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2
service/src/main/java/org/whispersystems/textsecuregcm/WhisperServerService.java
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@@ -89,6 +89,7 @@ import org.whispersystems.textsecuregcm.metrics.FileDescriptorGauge;
import org.whispersystems.textsecuregcm.metrics.FreeMemoryGauge;
import org.whispersystems.textsecuregcm.metrics.GarbageCollectionCountGauge;
import org.whispersystems.textsecuregcm.metrics.GarbageCollectionTimeGauge;
import org.whispersystems.textsecuregcm.metrics.MaxFileDescriptorGauge;
import org.whispersystems.textsecuregcm.metrics.MetricsApplicationEventListener;
import org.whispersystems.textsecuregcm.metrics.NetworkReceivedGauge;
import org.whispersystems.textsecuregcm.metrics.NetworkSentGauge;
@@ -451,6 +452,7 @@ public class WhisperServerService extends Application<WhisperServerConfiguration
environment.metrics().register(name(FileDescriptorGauge.class, "fd_count"), new FileDescriptorGauge());
environment.metrics().register(name(GarbageCollectionCountGauge.class, "gc_count"), new GarbageCollectionCountGauge());
environment.metrics().register(name(GarbageCollectionTimeGauge.class, "gc_time"), new GarbageCollectionTimeGauge());
environment.metrics().register(name(MaxFileDescriptorGauge.class, "max_fd_count"), new MaxFileDescriptorGauge());
}
private void registerExceptionMappers(Environment environment, WebSocketEnvironment<Account> webSocketEnvironment, WebSocketEnvironment<Account> provisioningEnvironment) {

23
service/src/main/java/org/whispersystems/textsecuregcm/metrics/MaxFileDescriptorGauge.java Normal file
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@@ -0,0 +1,23 @@
package org.whispersystems.textsecuregcm.metrics;
import com.codahale.metrics.Gauge;
import com.sun.management.UnixOperatingSystemMXBean;
import java.lang.management.ManagementFactory;
/**
* A gauge that reports the maximum number of file descriptors allowed by the operating system.
*/
public class MaxFileDescriptorGauge implements Gauge<Long> {
private final UnixOperatingSystemMXBean unixOperatingSystemMXBean;
public MaxFileDescriptorGauge() {
this.unixOperatingSystemMXBean = (UnixOperatingSystemMXBean)ManagementFactory.getOperatingSystemMXBean();
}
@Override
public Long getValue() {
return unixOperatingSystemMXBean.getMaxFileDescriptorCount();
}
}