org.springframework.xd.dirt.cluster

Class RedeploymentContainerMatcher

java.lang.Object

org.springframework.xd.dirt.cluster.RedeploymentContainerMatcher

All Implemented Interfaces:

ContainerMatcher

public class RedeploymentContainerMatcher
extends java.lang.Object
implements ContainerMatcher

Wrapper for ContainerMatcher used for redeployment of modules when a container exits the cluster. This matcher provides the following functionality:

1. only one container is returned
2. containers whose names are present in the provided exclusions collection are not returned; these containers are presumed to have already deployed the module

Author:

Patrick Peralta

Constructor Summary

Constructors

Constructor and Description
RedeploymentContainerMatcher(ContainerMatcher containerMatcher, java.util.Collection<java.lang.String> exclusions) Construct an ExcludingContainerMatcher.

Method Summary

Methods

Modifier and Type	Method and Description
java.util.Collection<Container>	match(ModuleDescriptor moduleDescriptor, ModuleDeploymentProperties deploymentProperties, java.lang.Iterable<Container> containers) Matches the provided module against one of the candidate containers.

Methods inherited from class java.lang.Object

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

Constructor Detail

RedeploymentContainerMatcher

public RedeploymentContainerMatcher(ContainerMatcher containerMatcher,
                            java.util.Collection<java.lang.String> exclusions)

Construct an ExcludingContainerMatcher.

Parameters:

containerMatcher - container matcher to wrap

exclusions - collection of container names to exclude

Method Detail

match

public java.util.Collection<Container> match(ModuleDescriptor moduleDescriptor,
                                    ModuleDeploymentProperties deploymentProperties,
                                    java.lang.Iterable<Container> containers)

Matches the provided module against one of the candidate containers.

Specified by:

match in interface ContainerMatcher

Parameters:

moduleDescriptor - the module to match against

deploymentProperties - deployment properties for the module; this provides hints such as the number of containers and other matching criteria

containers - iterable list of containers to match against

Returns:

a collection of matched containers; collection is empty if no suitable containers are found