Package org.onosproject.net.intent.constraint

Class AnnotationConstraint

java.lang.Object

org.onosproject.net.intent.constraint.BooleanConstraint

org.onosproject.net.intent.constraint.AnnotationConstraint

All Implemented Interfaces:

Constraint

@Beta
public class AnnotationConstraint
extends BooleanConstraint

Constraint that evaluates an arbitrary link annotated value is under the specified threshold.

Constructor Summary

Constructors

Constructor	Description
AnnotationConstraint(String key, double threshold)	Creates a new constraint to keep the value for the specified key of link annotation under the threshold.

Method Summary

Modifier and Type	Method	Description
double	cost(Link link, ResourceContext context)	Evaluates the specified link and provides the cost for its traversal.
boolean	equals(Object obj)
int	hashCode()
boolean	isValid(Link link, ResourceContext context)	Returns true if the specified link satisfies the constraint.
String	key()	Returns the key of link annotation this constraint designates.
double	threshold()	Returns the threshold this constraint ensures as link annotated value.
String	toString()

Methods inherited from class org.onosproject.net.intent.constraint.BooleanConstraint

validate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AnnotationConstraint

public AnnotationConstraint(String key,
                            double threshold)

Creates a new constraint to keep the value for the specified key of link annotation under the threshold.

Parameters:

key - key of link annotation

threshold - threshold value of the specified link annotation

Method Detail

key

public String key()

Returns the key of link annotation this constraint designates.

Returns:

key of link annotation

threshold

public double threshold()

Returns the threshold this constraint ensures as link annotated value.

Returns:

threshold as link annotated value

isValid

public boolean isValid(Link link,
                       ResourceContext context)

Description copied from class: BooleanConstraint

Returns true if the specified link satisfies the constraint.

Specified by:

isValid in class BooleanConstraint

Parameters:

link - link to be validated

context - resource context for checking available resources

Returns:

true if link is viable

cost

public double cost(Link link,
                   ResourceContext context)

Description copied from class: BooleanConstraint

Evaluates the specified link and provides the cost for its traversal. Negative return value means the specified link does not satisfy this constraint.

Specified by:

cost in interface Constraint

Overrides:

cost in class BooleanConstraint

Parameters:

link - link to be evaluated

context - resource context for validating availability of resources

Returns:

cost of link traversal

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object