com.mesosphere.sdk.offer.evaluate.placement

Class HostnameRule

java.lang.Object

com.mesosphere.sdk.offer.evaluate.placement.StringMatcherRule

com.mesosphere.sdk.offer.evaluate.placement.HostnameRule

All Implemented Interfaces:

PlacementRule

public class HostnameRule
extends StringMatcherRule

This rule enforces that a task be placed on the specified hostname, or enforces that the task avoid that hostname.

Constructor Summary

Constructors

Constructor and Description
HostnameRule(StringMatcher matcher)

Method Summary

Modifier and Type	Method and Description
EvaluationOutcome	filter(Offer offer, PodInstance podInstance, java.util.Collection<TaskInfo> tasks) Returns whether the provided Offer, combined with the accompanying TaskInfos, passes or fails this placement constraint.
java.util.Collection<java.lang.String>	getKeys(Offer offer)
java.util.Collection<PlacementField>	getPlacementFields() Returns the PlacementFields to which this rule applies.

Methods inherited from class com.mesosphere.sdk.offer.evaluate.placement.StringMatcherRule

equals, getMatcher, hashCode, isAcceptable, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

HostnameRule

public HostnameRule(StringMatcher matcher)

Method Detail

filter

public EvaluationOutcome filter(Offer offer,
                                PodInstance podInstance,
                                java.util.Collection<TaskInfo> tasks)

Description copied from interface: PlacementRule

Returns whether the provided Offer, combined with the accompanying TaskInfos, passes or fails this placement constraint.

Parameters:

offer - the offer to be examined

tasks - the currently deployed tasks in the system, possibly including a duplicate of the task being launched as represented in the offerRequirement. Use PlacementUtils.areEquivalent(TaskInfo, PodInstance) to detect duplicates

Returns:

an EvaluationOutcome object describing whether the placement succeeded or failed and why

getPlacementFields

public java.util.Collection<PlacementField> getPlacementFields()

Description copied from interface: PlacementRule

Returns the PlacementFields to which this rule applies.

getKeys

public java.util.Collection<java.lang.String> getKeys(Offer offer)

Specified by:

getKeys in class StringMatcherRule