@Override
protected void doExecute(Task task, SearchRequest searchRequest, ActionListener<SearchResponse> listener) {
final long absoluteStartMillis = System.currentTimeMillis();
final long relativeStartNanos = System.nanoTime();
final SearchTimeProvider timeProvider =
new SearchTimeProvider(absoluteStartMillis, relativeStartNanos, System::nanoTime);
final ClusterState clusterState = clusterService.state();
final Map<String, OriginalIndices> remoteClusterIndices = remoteClusterService.groupIndices(searchRequest.indicesOptions(),
searchRequest.indices(), idx -> indexNameExpressionResolver.hasIndexOrAlias(idx, clusterState));
OriginalIndices localIndices = remoteClusterIndices.remove(RemoteClusterAware.LOCAL_CLUSTER_GROUP_KEY);
if (remoteClusterIndices.isEmpty()) {
executeSearch((SearchTask)task, timeProvider, searchRequest, localIndices, remoteClusterIndices, Collections.emptyList(),
(clusterName, nodeId) -> null, clusterState, Collections.emptyMap(), listener);
} else {
remoteClusterService.collectSearchShards(searchRequest.indicesOptions(), searchRequest.preference(), searchRequest.routing(),
remoteClusterIndices, ActionListener.wrap((searchShardsResponses) -> {
List<SearchShardIterator> remoteShardIterators = new ArrayList<>();
Map<String, AliasFilter> remoteAliasFilters = new HashMap<>();
BiFunction<String, String, DiscoveryNode> clusterNodeLookup = processRemoteShards(searchShardsResponses,
remoteClusterIndices, remoteShardIterators, remoteAliasFilters);
executeSearch((SearchTask) task, timeProvider, searchRequest, localIndices, remoteClusterIndices, remoteShardIterators,
clusterNodeLookup, clusterState, remoteAliasFilters, listener);
}, listener::onFailure));
}
}