com.netflix.eureka.util

Class AwsAsgUtil

java.lang.Object

com.netflix.eureka.util.AwsAsgUtil

public class AwsAsgUtil
extends java.lang.Object

A utility class for querying and updating information about amazon autoscaling groups using the AWS APIs.

Method Summary

Modifier and Type	Method and Description
static AwsAsgUtil	getInstance()
long	getNumberofASGQueries() Gets the number of ASG queries done in the period.
long	getNumberofASGQueryFailures() Gets the number of ASG queries that failed because of some reason.
long	getNumberofElementsinASGCache() Gets the number of elements in the ASG cache.
boolean	isASGEnabled(com.netflix.appinfo.InstanceInfo instanceInfo) Return the status of the ASG whether is enabled or disabled for service.
void	setStatus(java.lang.String asgName, boolean enabled) Sets the status of the ASG.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static AwsAsgUtil getInstance()

isASGEnabled

public boolean isASGEnabled(com.netflix.appinfo.InstanceInfo instanceInfo)

Return the status of the ASG whether is enabled or disabled for service. The value is picked up from the cache except the very first time.

Parameters:

instanceInfo - the instanceInfo for the lookup

Returns:

true if enabled, false otherwise

setStatus

public void setStatus(java.lang.String asgName,
                      boolean enabled)

Sets the status of the ASG.

Parameters:

asgName - The name of the ASG

enabled - true to enable, false to disable

getNumberofElementsinASGCache

@Monitor(name="numOfElementsinASGCache",
         description="Number of elements in the ASG Cache",
         type=GAUGE)
public long getNumberofElementsinASGCache()

Gets the number of elements in the ASG cache.

Returns:

the long value representing the number of elements in the ASG cache.

getNumberofASGQueries

@Monitor(name="numOfASGQueries",
         description="Number of queries made to AWS to retrieve ASG information",
         type=COUNTER)
public long getNumberofASGQueries()

Gets the number of ASG queries done in the period.

Returns:

the long value representing the number of ASG queries done in the period.

getNumberofASGQueryFailures

@Monitor(name="numOfASGQueryFailures",
         description="Number of queries made to AWS to retrieve ASG information and that failed",
         type=COUNTER)
public long getNumberofASGQueryFailures()

Gets the number of ASG queries that failed because of some reason.

Returns:

the long value representing the number of ASG queries that failed because of some reason.