org.openspaces.admin.alert.alerts

Class GarbageCollectionAlert

java.lang.Object

org.openspaces.admin.alert.alerts.AbstractAlert

org.openspaces.admin.alert.alerts.GarbageCollectionAlert

All Implemented Interfaces:

Externalizable, Serializable, Alert

public class GarbageCollectionAlert
extends AbstractAlert

A Garbage Collection duration alert, fired upon triggered GC thresholds. The alert is raised when the JVM spends more than a specified period of time on Garbage Collection. The alert is resolved when the JVM spends less then the specified time on Garbage Collection.

These thresholds can be configured by using the GarbageCollectionAlertConfigurer.

This alert will be received on the call to AlertTriggeredEventListener.alertTriggered(Alert) for registered listeners.

Since:

8.0

Author:

Moran Avigdor

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	COMPONENT_NAME
static String	CPU_UTILIZATION
static String	GC_DURATION_MILLISECONDS
static String	HEAP_UTILIZATION
static String	HOST_ADDRESS
static String	HOST_NAME
static String	NON_HEAP_UTILIZATION
static String	PROCESS_ID

Constructor Summary

Constructors

Constructor and Description
GarbageCollectionAlert() required by java.io.Externalizable
GarbageCollectionAlert(Alert alert)

Method Summary

Modifier and Type	Method and Description
String	getComponentName() The name of the component for which the alert was fired (e.g.
String	getComponentUid() The component UID is equivalent to VirtualMachine.getUid()
Double	getCpuUtilization() The CPU utilization reading when this alert was fired.
Long	getGcDuration() The period of time the JVM has spent on GC which triggered the alert.
Double	getHeapUtilization() The Heap utilization reading when this alert was fired.
String	getHostAddress() The host address of the machine that this alert corresponds to.
String	getHostName() The host name of the machine that this alert corresponds to.
Double	getNonHeapUtilization() The non-Heap utilization reading when this alert was fired.
String	getProcessId() The process id of the component for which the alert was fired.

Methods inherited from class org.openspaces.admin.alert.alerts.AbstractAlert

getAlert, getAlertUid, getComponentDescription, getConfig, getDescription, getGroupUid, getName, getProperties, getSeverity, getStatus, getTimestamp, readExternal, toString, writeExternal

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

HOST_ADDRESS

public static final String HOST_ADDRESS

See Also:

Constant Field Values

HOST_NAME

public static final String HOST_NAME

See Also:

Constant Field Values

CPU_UTILIZATION

public static final String CPU_UTILIZATION

See Also:

Constant Field Values

PROCESS_ID

public static final String PROCESS_ID

See Also:

Constant Field Values

COMPONENT_NAME

public static final String COMPONENT_NAME

See Also:

Constant Field Values

GC_DURATION_MILLISECONDS

public static final String GC_DURATION_MILLISECONDS

See Also:

Constant Field Values

HEAP_UTILIZATION

public static final String HEAP_UTILIZATION

See Also:

Constant Field Values

NON_HEAP_UTILIZATION

public static final String NON_HEAP_UTILIZATION

See Also:

Constant Field Values

Constructor Detail

GarbageCollectionAlert

public GarbageCollectionAlert()

required by java.io.Externalizable

GarbageCollectionAlert

public GarbageCollectionAlert(Alert alert)

Method Detail

getComponentUid

public String getComponentUid()

The component UID is equivalent to VirtualMachine.getUid()

Specified by:

getComponentUid in interface Alert

Overrides:

getComponentUid in class AbstractAlert

Returns:

Component UID - the unique identifier of the component associated with the alert.

getHostAddress

public String getHostAddress()

The host address of the machine that this alert corresponds to.

Returns:

the host address; may be null.

getHostName

public String getHostName()

The host name of the machine that this alert corresponds to.

Returns:

the host name; may be null.

getCpuUtilization

public Double getCpuUtilization()

The CPU utilization reading when this alert was fired.

Returns:

the CPU utilization; may be null.

getProcessId

public String getProcessId()

The process id of the component for which the alert was fired.

Returns:

the process id (pid); may be null.

getComponentName

public String getComponentName()

The name of the component for which the alert was fired (e.g. 'Grid Service Agent', 'Grid Service Manager', 'Grid Service Container', 'Lookup Service').

Returns:

the name of the component.

getHeapUtilization

public Double getHeapUtilization()

The Heap utilization reading when this alert was fired.

Returns:

the Heap utilization; may be null.

getNonHeapUtilization

public Double getNonHeapUtilization()

The non-Heap utilization reading when this alert was fired.

Returns:

the non-Heap utilization; may be null.

getGcDuration

public Long getGcDuration()

The period of time the JVM has spent on GC which triggered the alert.

Returns:

the GC duration in milliseconds.