pl.edu.agh.age.services.discovery

Interface DiscoveryService

All Known Implementing Classes:

HazelcastDiscoveryService

public interface DiscoveryService

Discovery service is responsible for collecting info about other nodes in the cluster and providing it to other services.

Method Summary

Modifier and Type	Method and Description
java.util.Set<NodeDescriptor>	allMembers() Returns NodeDescriptors of all cluster members.
java.util.Set<NodeDescriptor>	membersMatching(java.lang.String criteria) Returns NodeDescriptors of cluster members matching the given criteria.
java.util.Optional<NodeDescriptor>	memberWithId(java.lang.String id) Returns NodeDescriptor for the node with the given ID.

Method Detail

membersMatching

java.util.Set<NodeDescriptor> membersMatching(java.lang.String criteria)

Returns NodeDescriptors of cluster members matching the given criteria.

Parameters:

criteria - Criteria in the form of SQL query.

Returns:

A set of node descriptors.

See Also:

SqlPredicate

allMembers

java.util.Set<NodeDescriptor> allMembers()

Returns NodeDescriptors of all cluster members.

Returns:

A set of node descriptors.

memberWithId

java.util.Optional<NodeDescriptor> memberWithId(java.lang.String id)

Returns NodeDescriptor for the node with the given ID.

Parameters:

id - an ID to look up.

Returns:

a matching NodeDescriptor or empty Optional if there is no such member.