import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
+import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
public boolean isShardConfigured(String shardName) {
return (shardMembers.containsKey(shardName));
}
+
+ @Override
+ public void addMemberReplicaForShard (String shardName, String newMemberName) {
+ Map<String, List<String>> newShardMembers = new HashMap<>(shardMembers);
+ for(Map.Entry<String, List<String>> shard : newShardMembers.entrySet()) {
+ if (shard.getKey().equals(shardName)) {
+ List<String> replicas = new ArrayList<>(shard.getValue());
+ replicas.add(newMemberName);
+ shard.setValue(replicas);
+ shardMembers = ImmutableMap.<String, List<String>>builder().putAll(newShardMembers).build();
+ }
+ }
+ }
+
+ @Override
+ public void removeMemberReplicaForShard (String shardName, String newMemberName) {
+ Map<String, List<String>> newShardMembers = new HashMap<>(shardMembers);
+ for(Map.Entry<String, List<String>> shard : newShardMembers.entrySet()) {
+ if (shard.getKey().equals(shardName)) {
+ List<String> replicas = new ArrayList<>(shard.getValue());
+ replicas.remove(newMemberName);
+ shard.setValue(replicas);
+ shardMembers = ImmutableMap.<String, List<String>>builder().putAll(newShardMembers).build();
+ }
+ }
+ }
}