org.xins.server

Class LoadBalancerInterceptor

java.lang.Object

org.xins.common.manageable.Manageable

org.xins.server.Interceptor

org.xins.server.LoadBalancerInterceptor

public class LoadBalancerInterceptor
extends Interceptor

Interceptor that redirect requests to other servers.

Author:

Anthony Goubard

Nested Class Summary

Nested classes/interfaces inherited from class org.xins.common.manageable.Manageable

Manageable.State

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<Pattern,Descriptor>	descriptors
static String	FROM_LOAD_BALANCER_PARAMETER
static String	LB_DISPATCH_STATEGY
static String	LB_FORWARD_STATEGY
static String	LB_PROPERTY_NAME
static String	RESULT_FORWARD_PROPERTY
protected Map<Pattern,String>	strategies

Fields inherited from class org.xins.common.manageable.Manageable

BOOTSTRAPPED, BOOTSTRAPPING, DEINITIALIZING, INITIALIZING, UNUSABLE, USABLE

Constructor Summary

Constructors

Constructor and Description
LoadBalancerInterceptor()

Method Summary

Methods

Modifier and Type	Method and Description
FunctionResult	afterFunctionCall(FunctionRequest functionRequest, FunctionResult xinsResult, HttpServletResponse httpResponse)
FunctionRequest	beforeFunctionCall(HttpServletRequest httpRequest, FunctionRequest functionRequest)
protected void	deinitImpl() Deinitializes this instance (actual implementation).
protected void	initImpl(Map<String,String> properties) Performs the initialization procedure (actual implementation).

Methods inherited from class org.xins.server.Interceptor

afterCallingConvention, beforeCallingConvention, beginRequest, endRequest, getApi

Methods inherited from class org.xins.common.manageable.Manageable

assertUsable, bootstrap, bootstrapImpl, deinit, getState, init, isBootstrapped, isUsable

Methods inherited from class java.lang.Object

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

Field Detail

FROM_LOAD_BALANCER_PARAMETER

public static final String FROM_LOAD_BALANCER_PARAMETER

See Also:

Constant Field Values

RESULT_FORWARD_PROPERTY

public static final String RESULT_FORWARD_PROPERTY

See Also:

Constant Field Values

LB_PROPERTY_NAME

public static final String LB_PROPERTY_NAME

See Also:

Constant Field Values

LB_FORWARD_STATEGY

public static final String LB_FORWARD_STATEGY

See Also:

Constant Field Values

LB_DISPATCH_STATEGY

public static final String LB_DISPATCH_STATEGY

See Also:

Constant Field Values

descriptors

protected Map<Pattern,Descriptor> descriptors

strategies

protected Map<Pattern,String> strategies

Constructor Detail

LoadBalancerInterceptor

public LoadBalancerInterceptor()

Method Detail

initImpl

protected void initImpl(Map<String,String> properties)
                 throws MissingRequiredPropertyException,
                        InvalidPropertyValueException,
                        InitializationException

Description copied from class: Manageable

Performs the initialization procedure (actual implementation). When this method is called from Manageable.init(Map), the state and the argument will have been checked and the state will have been set to Manageable.INITIALIZING.

The implementation of this method in class Manageable is empty.

Overrides:

initImpl in class Manageable

Parameters:

properties - the initialization properties, not null.

Throws:

MissingRequiredPropertyException - if a required property is not given.

InvalidPropertyValueException - if the value of a certain property is invalid.

InitializationException - if the initialization failed, for any other reason.

deinitImpl

protected void deinitImpl()

Description copied from class: Manageable

Deinitializes this instance (actual implementation). This method will be called from Manageable.deinit() each time the latter is called and it finds that the state is correct. The state will have been set to Manageable.DEINITIALIZING.

Overrides:

deinitImpl in class Manageable

beforeFunctionCall

public FunctionRequest beforeFunctionCall(HttpServletRequest httpRequest,
                                 FunctionRequest functionRequest)

Overrides:

beforeFunctionCall in class Interceptor

afterFunctionCall

public FunctionResult afterFunctionCall(FunctionRequest functionRequest,
                               FunctionResult xinsResult,
                               HttpServletResponse httpResponse)

Overrides:

afterFunctionCall in class Interceptor