com.hortonworks.registries.schemaregistry.client

Class LoadBalancedFailoverUrlSelector

java.lang.Object

com.hortonworks.registries.schemaregistry.client.AbstractUrlSelector

com.hortonworks.registries.schemaregistry.client.LoadBalancedFailoverUrlSelector

All Implemented Interfaces:

UrlSelector

public class LoadBalancedFailoverUrlSelector
extends AbstractUrlSelector

This class defines a strategy to roundrobin among active URLs. When all URLs are considered failed which are maintained in the cache then it invalidates the cache and all urls are considered active.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	FAILED_URL_EXPIRY_INTERVAL_MS Property to configure time interval at which failed URL may be considered active.

Fields inherited from class com.hortonworks.registries.schemaregistry.client.AbstractUrlSelector

conf, urls

Constructor Summary

Constructors

Constructor and Description
LoadBalancedFailoverUrlSelector(java.lang.String clusterUrl)

Method Summary

Modifier and Type	Method and Description
protected boolean	failedError(java.lang.Exception ex) Returns true if the given Exception indicates the respective URL can be treated as failed.
void	init(java.util.Map<java.lang.String,java.lang.Object> conf)
java.lang.String	select() Returns the current url chosen among the given cluster urls.
void	urlWithError(java.lang.String url, java.lang.Exception e) Sets the given url is failed with the given Exception ex.

Methods inherited from class java.lang.Object

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

Field Detail

FAILED_URL_EXPIRY_INTERVAL_MS

public static final java.lang.String FAILED_URL_EXPIRY_INTERVAL_MS

Property to configure time interval at which failed URL may be considered active.

See Also:

Constant Field Values

Constructor Detail

LoadBalancedFailoverUrlSelector

public LoadBalancedFailoverUrlSelector(java.lang.String clusterUrl)

Method Detail

init

public void init(java.util.Map<java.lang.String,java.lang.Object> conf)

Specified by:

init in interface UrlSelector

Overrides:

init in class AbstractUrlSelector

select

public java.lang.String select()

Description copied from interface: UrlSelector

Returns the current url chosen among the given cluster urls.

urlWithError

public void urlWithError(java.lang.String url,
                         java.lang.Exception e)

Description copied from interface: UrlSelector

Sets the given url is failed with the given Exception ex.

Parameters:

url - failed url

e - exception encountered

failedError

protected boolean failedError(java.lang.Exception ex)

Returns true if the given Exception indicates the respective URL can be treated as failed.

Parameters:

ex -