org.elasticsearch.action.admin.indices.settings.get.TransportGetSettingsAction Maven / Gradle / Ivy
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Elasticsearch subproject :server
/*
* 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.indices.settings.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.IndexMetadata;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.collect.ImmutableOpenMap;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.IndexScopedSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.settings.SettingsFilter;
import org.elasticsearch.common.util.CollectionUtils;
import org.elasticsearch.index.Index;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
public class TransportGetSettingsAction extends TransportMasterNodeReadAction {
private final SettingsFilter settingsFilter;
private final IndexScopedSettings indexScopedSettings;
@Inject
public TransportGetSettingsAction(
TransportService transportService,
ClusterService clusterService,
ThreadPool threadPool,
SettingsFilter settingsFilter,
ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver,
IndexScopedSettings indexedScopedSettings
) {
super(
GetSettingsAction.NAME,
transportService,
clusterService,
threadPool,
actionFilters,
GetSettingsRequest::new,
indexNameExpressionResolver,
GetSettingsResponse::new,
ThreadPool.Names.SAME
);
this.settingsFilter = settingsFilter;
this.indexScopedSettings = indexedScopedSettings;
}
@Override
protected ClusterBlockException checkBlock(GetSettingsRequest request, ClusterState state) {
return state.blocks()
.indicesBlockedException(ClusterBlockLevel.METADATA_READ, indexNameExpressionResolver.concreteIndexNames(state, request));
}
private static boolean isFilteredRequest(GetSettingsRequest request) {
return CollectionUtils.isEmpty(request.names()) == false;
}
@Override
protected void masterOperation(
Task task,
GetSettingsRequest request,
ClusterState state,
ActionListener listener
) {
Index[] concreteIndices = indexNameExpressionResolver.concreteIndices(state, request);
ImmutableOpenMap.Builder indexToSettingsBuilder = ImmutableOpenMap.builder();
ImmutableOpenMap.Builder indexToDefaultSettingsBuilder = ImmutableOpenMap.builder();
for (Index concreteIndex : concreteIndices) {
IndexMetadata indexMetadata = state.getMetadata().index(concreteIndex);
if (indexMetadata == null) {
continue;
}
Settings indexSettings = settingsFilter.filter(indexMetadata.getSettings());
if (request.humanReadable()) {
indexSettings = IndexMetadata.addHumanReadableSettings(indexSettings);
}
if (isFilteredRequest(request)) {
indexSettings = indexSettings.filter(k -> Regex.simpleMatch(request.names(), k));
}
indexToSettingsBuilder.put(concreteIndex.getName(), indexSettings);
if (request.includeDefaults()) {
Settings defaultSettings = settingsFilter.filter(indexScopedSettings.diff(indexSettings, Settings.EMPTY));
if (isFilteredRequest(request)) {
defaultSettings = defaultSettings.filter(k -> Regex.simpleMatch(request.names(), k));
}
indexToDefaultSettingsBuilder.put(concreteIndex.getName(), defaultSettings);
}
}
listener.onResponse(new GetSettingsResponse(indexToSettingsBuilder.build(), indexToDefaultSettingsBuilder.build()));
}
}