Constraint (ONOS Java API (2.3.0))

All Known Implementing Classes:

AnnotationConstraint, AsymmetricPathConstraint, BandwidthConstraint, BooleanConstraint, DomainConstraint, EncapsulationConstraint, HashedPathSelectionConstraint, LatencyConstraint, LinkTypeConstraint, MarkerConstraint, NonDisruptiveConstraint, ObstacleConstraint, PartialFailureConstraint, PathViabilityConstraint, ProtectedConstraint, ProtectionConstraint, WaypointConstraint
```
@Beta
public interface Constraint
```
Representation of a connectivity constraint capable of evaluating a link and determining the cost of traversing that link in the context of this constraint.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`double`	`cost(Link link, ResourceContext context)`	Evaluates the specified link and provides the cost for its traversal.
`boolean`	`validate(Path path, ResourceContext context)`	Validates that the specified path satisfies the constraint.

- Method Detail
  - cost
```
double cost(Link link,
            ResourceContext context)
```
    Evaluates the specified link and provides the cost for its traversal.
    
    Parameters:
    
    link - link to be evaluated
    
    context - resource context for validating availability of resources
    
    Returns:
    
    cost of link traversal
  - validate
```
boolean validate(Path path,
                 ResourceContext context)
```
    Validates that the specified path satisfies the constraint.
    
    Parameters:
    
    path - path to be validated
    
    context - resource context for validating availability of resources
    
    Returns:
    
    cost of link traversal