Package com.netflix.eureka.aws

Class AwsAsgUtil

java.lang.Object

com.netflix.eureka.aws.AwsAsgUtil

All Implemented Interfaces:

AsgClient

@Singleton
public class AwsAsgUtil
extends java.lang.Object
implements AsgClient

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

Constructor Summary

Constructors

Constructor	Description
AwsAsgUtil(EurekaServerConfig serverConfig, com.netflix.discovery.EurekaClientConfig clientConfig, InstanceRegistry registry)

Method Summary

Modifier and Type	Method	Description
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

Constructor Detail

AwsAsgUtil

@Inject
public AwsAsgUtil(EurekaServerConfig serverConfig,
                  com.netflix.discovery.EurekaClientConfig clientConfig,
                  InstanceRegistry registry)

Method Detail

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.

Specified by:

isASGEnabled in interface AsgClient

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.

Specified by:

setStatus in interface AsgClient

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.