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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.action.admin.cluster.repositories.get;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.master.TransportMasterNodeReadAction;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.metadata.RepositoriesMetaData;
import org.elasticsearch.cluster.metadata.RepositoryMetaData;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.repositories.RepositoryMissingException;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
/**
* Transport action for get repositories operation
*/
public class TransportGetRepositoriesAction extends TransportMasterNodeReadAction<GetRepositoriesRequest, GetRepositoriesResponse> {
@Inject
public TransportGetRepositoriesAction(Settings settings, TransportService transportService, ClusterService clusterService,
ThreadPool threadPool, ActionFilters actionFilters, IndexNameExpressionResolver indexNameExpressionResolver) {
super(settings, GetRepositoriesAction.NAME, transportService, clusterService, threadPool, actionFilters, indexNameExpressionResolver, GetRepositoriesRequest::new);
}
@Override
protected String executor() {
return ThreadPool.Names.MANAGEMENT;
}
@Override
protected GetRepositoriesResponse newResponse() {
return new GetRepositoriesResponse();
}
@Override
protected ClusterBlockException checkBlock(GetRepositoriesRequest request, ClusterState state) {
return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_READ);
}
@Override
protected void masterOperation(final GetRepositoriesRequest request, ClusterState state, final ActionListener<GetRepositoriesResponse> listener) {
MetaData metaData = state.metaData();
RepositoriesMetaData repositories = metaData.custom(RepositoriesMetaData.TYPE);
if (request.repositories().length == 0 || (request.repositories().length == 1 && "_all".equals(request.repositories()[0]))) {
if (repositories != null) {
listener.onResponse(new GetRepositoriesResponse(repositories.repositories()));
} else {
listener.onResponse(new GetRepositoriesResponse(Collections.<RepositoryMetaData>emptyList()));
}
} else {
if (repositories != null) {
Set<String> repositoriesToGet = new LinkedHashSet<>(); // to keep insertion order
for (String repositoryOrPattern : request.repositories()) {
if (Regex.isSimpleMatchPattern(repositoryOrPattern) == false) {
repositoriesToGet.add(repositoryOrPattern);
} else {
for (RepositoryMetaData repository : repositories.repositories()) {
if (Regex.simpleMatch(repositoryOrPattern, repository.name())) {
repositoriesToGet.add(repository.name());
}
}
}
}
List<RepositoryMetaData> repositoryListBuilder = new ArrayList<>();
for (String repository : repositoriesToGet) {
RepositoryMetaData repositoryMetaData = repositories.repository(repository);
if (repositoryMetaData == null) {
listener.onFailure(new RepositoryMissingException(repository));
return;
}
repositoryListBuilder.add(repositoryMetaData);
}
listener.onResponse(new GetRepositoriesResponse(Collections.unmodifiableList(repositoryListBuilder)));
} else {
listener.onFailure(new RepositoryMissingException(request.repositories()[0]));
}
}
}
}