org.apache.stratos.lb.common.conf
Class LoadBalancerConfiguration

java.lang.Object
  org.apache.stratos.lb.common.conf.LoadBalancerConfiguration

All Implemented Interfaces:

Serializable

public class LoadBalancerConfiguration
extends Object
implements Serializable

Data object which hold configuration data of the load analyzer task

See Also:

Serialized Form

Nested Class Summary

class	LoadBalancerConfiguration.Configuration
class	LoadBalancerConfiguration.LBConfiguration
class	LoadBalancerConfiguration.ServiceConfiguration

Field Summary

protected LoadBalancerConfiguration.ServiceConfiguration	defaultServiceConfig
protected LoadBalancerConfiguration.LBConfiguration	lbConfig
protected String	lbConfigString LBConfig file as a String
protected Node	rootNode Root node object for loadbalancer.conf
protected static long	serialVersionUID

Method Summary

boolean	addServiceConfiguration(LoadBalancerConfiguration.ServiceConfiguration serviceConfig)
void	addToHostContextMap(String hostName, HostContext ctxt)
void	addToHostNameTrackerMap(String name, List<String> hosts)
protected void	createConfiguration(LoadBalancerConfiguration.Configuration config, Node node)
String	createLBConfigString(InputStream configFileName)
String	createLBConfigString(String configFileName) Convert given configuration file to a single String
List<LoadBalancerConfiguration.ServiceConfiguration>	createServicesConfig(Node servicesConfigNode) Process the content of the following 'services' element services { defaults { min_app_instances 1; max_app_instances 5; queue_length_per_node 400; rounds_to_average 10; instances_per_scale_up 1; message_expiry_time 60000; } appserver { hosts appserver.cloud-test.wso2.com,as.cloud-test.wso2.com; domains { wso2.as1.domain { tenant_range 1-100; } wso2.as2.domain { tenant_range 101-200; } wso2.as3.domain { tenant_range *; } } } }
Map<String,HostContext>	getHostContextMap() Return a map of HostContext.
Map<String,Set<String>>	getHostNamesTracker()
static LoadBalancerConfiguration	getInstance()
LoadBalancerConfiguration.LBConfiguration	getLoadBalancerConfig()
Node	getRootNode()
LoadBalancerConfiguration.ServiceConfiguration	getServiceConfig(String domain, String subDomain)
List<LoadBalancerConfiguration.ServiceConfiguration>	getServiceConfigs(String serviceName)
Map<String,Map<String,LoadBalancerConfiguration.ServiceConfiguration>>	getServiceConfigurations()
String[]	getServiceDomains()
Map<String,List<LoadBalancerConfiguration.ServiceConfiguration>>	getServiceNameToServiceConfigurations()
String[]	getServiceSubDomains(String domain)
void	init(String configURL) Sample loadbalancer.conf: loadbalancer { # minimum number of load balancer instances instances 1; # whether autoscaling enable or not enable_autoscaler true; # End point reference of the Autoscaler Service autoscaler_service_epr https://10.100.3.81:9443/services/AutoscalerService/; # interval between two task executions in milliseconds autoscaler_task_interval 1000; # after an instance booted up, task will wait till this much of time and let the server started up server_startup_delay 15000; } services { defaults { min_app_instances 1; max_app_instances 5; queue_length_per_node 400; rounds_to_average 10; instances_per_scale_up 1; message_expiry_time 60000; } appserver { hosts appserver.cloud-test.wso2.com,as.cloud-test.wso2.com; domains { wso2.as1.domain { tenant_range 1-100; } wso2.as2.domain { tenant_range 101-200; } wso2.as3.domain { tenant_range *; } } } }
boolean	isDuplicatedHost(String name, LoadBalancerConfiguration.ServiceConfiguration serviceConfig) Duplications can only be seen, when you traverse down the configuration file.
LoadBalancerConfiguration.ServiceConfiguration	removeServiceConfiguration(String domain, String subDomain)
void	resetData()
static void	setInstance(LoadBalancerConfiguration instance)
void	setRootNode(Node rootNode)

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

protected static final long serialVersionUID

See Also:

Constant Field Values

defaultServiceConfig

protected LoadBalancerConfiguration.ServiceConfiguration defaultServiceConfig

lbConfig

protected LoadBalancerConfiguration.LBConfiguration lbConfig

lbConfigString

protected String lbConfigString

LBConfig file as a String

rootNode

protected Node rootNode

Root node object for loadbalancer.conf

Method Detail

getInstance

public static LoadBalancerConfiguration getInstance()

init

public void init(String configURL)

Sample loadbalancer.conf:

loadbalancer { # minimum number of load balancer instances instances 1; # whether autoscaling enable or not enable_autoscaler true; # End point reference of the Autoscaler Service autoscaler_service_epr https://10.100.3.81:9443/services/AutoscalerService/; # interval between two task executions in milliseconds autoscaler_task_interval 1000; # after an instance booted up, task will wait till this much of time and let the server started up server_startup_delay 15000; }

services { defaults { min_app_instances 1; max_app_instances 5; queue_length_per_node 400; rounds_to_average 10; instances_per_scale_up 1; message_expiry_time 60000; }

appserver { hosts appserver.cloud-test.wso2.com,as.cloud-test.wso2.com; domains { wso2.as1.domain { tenant_range 1-100; } wso2.as2.domain { tenant_range 101-200; } wso2.as3.domain { tenant_range *; } } } }

Parameters:

configURL - URL of the load balancer config

createServicesConfig

public List<LoadBalancerConfiguration.ServiceConfiguration> createServicesConfig(Node servicesConfigNode)

Process the content of the following 'services' element

services { defaults { min_app_instances 1; max_app_instances 5; queue_length_per_node 400; rounds_to_average 10; instances_per_scale_up 1; message_expiry_time 60000; }

appserver { hosts appserver.cloud-test.wso2.com,as.cloud-test.wso2.com; domains { wso2.as1.domain { tenant_range 1-100; } wso2.as2.domain { tenant_range 101-200; } wso2.as3.domain { tenant_range *; } } } }

Parameters:

servicesConfigNode - services element's Node

addServiceConfiguration

public boolean addServiceConfiguration(LoadBalancerConfiguration.ServiceConfiguration serviceConfig)

removeServiceConfiguration

public LoadBalancerConfiguration.ServiceConfiguration removeServiceConfiguration(String domain,
                                                                                 String subDomain)

resetData

public void resetData()

isDuplicatedHost

public boolean isDuplicatedHost(String name,
                                LoadBalancerConfiguration.ServiceConfiguration serviceConfig)

Duplications can only be seen, when you traverse down the configuration file.

addToHostNameTrackerMap

public void addToHostNameTrackerMap(String name,
                                    List<String> hosts)

addToHostContextMap

public void addToHostContextMap(String hostName,
                                HostContext ctxt)

getHostContextMap

public Map<String,HostContext> getHostContextMap()

Return a map of HostContext.

Returns:

createConfiguration

protected void createConfiguration(LoadBalancerConfiguration.Configuration config,
                                   Node node)

getLoadBalancerConfig

public LoadBalancerConfiguration.LBConfiguration getLoadBalancerConfig()

getServiceDomains

public String[] getServiceDomains()

getServiceSubDomains

public String[] getServiceSubDomains(String domain)

getServiceConfig

public LoadBalancerConfiguration.ServiceConfiguration getServiceConfig(String domain,
                                                                       String subDomain)

getServiceConfigs

public List<LoadBalancerConfiguration.ServiceConfiguration> getServiceConfigs(String serviceName)

createLBConfigString

public String createLBConfigString(String configFileName)
                            throws FileNotFoundException

Convert given configuration file to a single String

Parameters:

configFileName - - file name to convert

Returns:

String with complete lb configuration

Throws:

FileNotFoundException

createLBConfigString

public String createLBConfigString(InputStream configFileName)
                            throws IOException

Throws:

IOException

getHostNamesTracker

public Map<String,Set<String>> getHostNamesTracker()

getServiceConfigurations

public Map<String,Map<String,LoadBalancerConfiguration.ServiceConfiguration>> getServiceConfigurations()

getRootNode

public Node getRootNode()

setRootNode

public void setRootNode(Node rootNode)

setInstance

public static void setInstance(LoadBalancerConfiguration instance)

getServiceNameToServiceConfigurations

public Map<String,List<LoadBalancerConfiguration.ServiceConfiguration>> getServiceNameToServiceConfigurations()