@Override
protected void masterOperation(
final ClusterStateRequest request,
final ClusterState state,
ActionListener<ClusterStateResponse> listener)
throws ElasticsearchException {
ClusterState currentState = clusterService.state();
logger.trace("Serving cluster state request using version {}", currentState.version());
ClusterState.Builder builder = ClusterState.builder(currentState.getClusterName());
builder.version(currentState.version());
if (request.nodes()) {
builder.nodes(currentState.nodes());
}
if (request.routingTable()) {
if (request.indices().length > 0) {
RoutingTable.Builder routingTableBuilder = RoutingTable.builder();
for (String filteredIndex : request.indices()) {
if (currentState.routingTable().getIndicesRouting().containsKey(filteredIndex)) {
routingTableBuilder.add(
currentState.routingTable().getIndicesRouting().get(filteredIndex));
}
}
builder.routingTable(routingTableBuilder);
} else {
builder.routingTable(currentState.routingTable());
}
}
if (request.blocks()) {
builder.blocks(currentState.blocks());
}
if (request.metaData()) {
MetaData.Builder mdBuilder;
if (request.indices().length == 0) {
mdBuilder = MetaData.builder(currentState.metaData());
} else {
mdBuilder = MetaData.builder();
}
if (request.indices().length > 0) {
String[] indices =
currentState
.metaData()
.concreteIndices(IndicesOptions.lenientExpandOpen(), request.indices());
for (String filteredIndex : indices) {
IndexMetaData indexMetaData = currentState.metaData().index(filteredIndex);
if (indexMetaData != null) {
mdBuilder.put(indexMetaData, false);
}
}
}
builder.metaData(mdBuilder);
}
listener.onResponse(new ClusterStateResponse(clusterName, builder.build()));
}
