| package org.apache.cassandra.sidecar.cluster; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| |
| import org.apache.cassandra.sidecar.cluster.instance.InstanceMetadata; |
| |
| /** |
| * Local implementation of InstancesConfig. |
| */ |
| public class InstancesConfigImpl implements InstancesConfig |
| { |
| private final Map<Integer, InstanceMetadata> idToInstanceMetas; |
| private final Map<String, InstanceMetadata> hostToInstanceMetas; |
| private final List<InstanceMetadata> instanceMetas; |
| |
| public InstancesConfigImpl(List<InstanceMetadata> instanceMetas) |
| { |
| this.idToInstanceMetas = instanceMetas.stream() |
| .collect(Collectors.toMap(InstanceMetadata::id, |
| instanceMeta -> instanceMeta)); |
| this.hostToInstanceMetas = instanceMetas.stream() |
| .collect(Collectors.toMap(InstanceMetadata::host, |
| instanceMeta -> instanceMeta)); |
| this.instanceMetas = instanceMetas; |
| } |
| |
| public List<InstanceMetadata> instances() |
| { |
| return instanceMetas; |
| } |
| |
| public InstanceMetadata instanceFromId(int id) |
| { |
| if (!idToInstanceMetas.containsKey(id)) |
| { |
| throw new IllegalArgumentException("Instance id " + id + " not found"); |
| } |
| return idToInstanceMetas.get(id); |
| } |
| |
| public InstanceMetadata instanceFromHost(String host) |
| { |
| if (!hostToInstanceMetas.containsKey(host)) |
| { |
| throw new IllegalArgumentException("Instance with host address " + host + " not found"); |
| } |
| return hostToInstanceMetas.get(host); |
| } |
| } |