@Override
protected void masterOperation(
final IndicesAliasesRequest request,
final ClusterState state,
final ActionListener<IndicesAliasesResponse> listener)
throws ElasticsearchException {
// Expand the indices names
List<AliasActions> actions = request.aliasActions();
List<AliasAction> finalActions = new ArrayList<>();
boolean hasOnlyDeletesButNoneCanBeDone = true;
Set<String> aliases = new HashSet<>();
for (AliasActions action : actions) {
// expand indices
String[] concreteIndices =
state.metaData().concreteIndices(request.indicesOptions(), action.indices());
// collect the aliases
Collections.addAll(aliases, action.aliases());
for (String index : concreteIndices) {
for (String alias : action.concreteAliases(state.metaData(), index)) {
AliasAction finalAction = new AliasAction(action.aliasAction());
finalAction.index(index);
finalAction.alias(alias);
finalActions.add(finalAction);
// if there is only delete requests, none will be added if the types do not map to any
// existing type
hasOnlyDeletesButNoneCanBeDone = false;
}
}
}
if (hasOnlyDeletesButNoneCanBeDone && actions.size() != 0) {
throw new AliasesMissingException(aliases.toArray(new String[aliases.size()]));
}
request.aliasActions().clear();
IndicesAliasesClusterStateUpdateRequest updateRequest =
new IndicesAliasesClusterStateUpdateRequest()
.ackTimeout(request.timeout())
.masterNodeTimeout(request.masterNodeTimeout())
.actions(finalActions.toArray(new AliasAction[finalActions.size()]));
indexAliasesService.indicesAliases(
updateRequest,
new ActionListener<ClusterStateUpdateResponse>() {
@Override
public void onResponse(ClusterStateUpdateResponse response) {
listener.onResponse(new IndicesAliasesResponse(response.isAcknowledged()));
}
@Override
public void onFailure(Throwable t) {
logger.debug("failed to perform aliases", t);
listener.onFailure(t);
}
});
}
@Override
protected ClusterBlockException checkBlock(IndicesAliasesRequest request, ClusterState state) {
Set<String> indices = Sets.newHashSet();
for (AliasActions aliasAction : request.aliasActions()) {
for (String index : aliasAction.indices()) {
indices.add(index);
}
}
return state
.blocks()
.indicesBlockedException(
ClusterBlockLevel.METADATA_WRITE, indices.toArray(new String[indices.size()]));
}