org.elasticsearch.action.admin.cluster.repositories.get.TransportGetRepositoriesAction Maven / Gradle / Ivy
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/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
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.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.repositories.RepositoryMissingException;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
/**
* Transport action for get repositories operation
*/
public class TransportGetRepositoriesAction extends
TransportMasterNodeReadAction {
@Inject
public TransportGetRepositoriesAction(TransportService transportService, ClusterService clusterService,
ThreadPool threadPool, ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver) {
super(GetRepositoriesAction.NAME, transportService, clusterService, threadPool, actionFilters,
GetRepositoriesRequest::new, indexNameExpressionResolver, GetRepositoriesResponse::new, ThreadPool.Names.SAME);
}
@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 listener) {
RepositoriesMetadata repositories = state.metadata().custom(RepositoriesMetadata.TYPE, RepositoriesMetadata.EMPTY);
if (request.repositories().length == 0 || (request.repositories().length == 1
&& ("_all".equals(request.repositories()[0]) || "*".equals(request.repositories()[0])))) {
listener.onResponse(new GetRepositoriesResponse(repositories));
} else {
Set 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 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(new RepositoriesMetadata(repositoryListBuilder)));
}
}
}