org.apache.whirr

Class RolePredicates

java.lang.Object

org.apache.whirr.RolePredicates

public class RolePredicates
extends Object

Predicates for matching Cluster.Instances with certain cluster roles.

Constructor Summary

Constructors

Constructor and Description
RolePredicates()

Method Summary

Methods

Modifier and Type	Method and Description
static com.google.common.base.Predicate<Cluster.Instance>	allRolesIn(Set<String> roles)
static com.google.common.base.Predicate<Cluster.Instance>	anyRoleIn(Set<String> roles)
static com.google.common.base.Predicate<Cluster.Instance>	onlyRolesIn(Set<String> roles)
static com.google.common.base.Predicate<Cluster.Instance>	role(String role)
static com.google.common.base.Predicate<Cluster.Instance>	withIds(Set<String> ids)
static com.google.common.base.Predicate<Cluster.Instance>	withIds(String... ids)

Methods inherited from class java.lang.Object

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

Constructor Detail

RolePredicates

public RolePredicates()

Method Detail

role

public static com.google.common.base.Predicate<Cluster.Instance> role(String role)

Parameters:

role -

Returns:

A Predicate that matches Cluster.Instances whose roles include role.

onlyRolesIn

public static com.google.common.base.Predicate<Cluster.Instance> onlyRolesIn(Set<String> roles)

Parameters:

roles -

Returns:

A Predicate that matches Cluster.Instances whose roles are exactly the same as those in roles.

allRolesIn

public static com.google.common.base.Predicate<Cluster.Instance> allRolesIn(Set<String> roles)

Parameters:

roles -

Returns:

A Predicate that matches Cluster.Instances whose roles contain all of roles.

anyRoleIn

public static com.google.common.base.Predicate<Cluster.Instance> anyRoleIn(Set<String> roles)

Parameters:

roles -

Returns:

A Predicate that matches Cluster.Instances whose roles contain at least one of roles.

withIds

public static com.google.common.base.Predicate<Cluster.Instance> withIds(String... ids)

Parameters:

ids - list of instance ids

Returns:

A Predicate that matches Cluster.Instance whose id is found in the IDs list

withIds

public static com.google.common.base.Predicate<Cluster.Instance> withIds(Set<String> ids)

Parameters:

ids - list of instance ids

Returns:

A Predicate that matches Cluster.Instance whose id is found in the IDs list