org.elasticsearch.action.admin.cluster.snapshots.get.TransportGetSnapshotsAction Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :core
/*
* 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.snapshots.get;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.master.TransportMasterNodeAction;
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.service.ClusterService;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.snapshots.SnapshotId;
import org.elasticsearch.snapshots.SnapshotInfo;
import org.elasticsearch.snapshots.SnapshotMissingException;
import org.elasticsearch.snapshots.SnapshotsService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Transport Action for get snapshots operation
*/
public class TransportGetSnapshotsAction extends TransportMasterNodeAction {
private final SnapshotsService snapshotsService;
@Inject
public TransportGetSnapshotsAction(Settings settings, TransportService transportService, ClusterService clusterService,
ThreadPool threadPool, SnapshotsService snapshotsService, ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver) {
super(settings, GetSnapshotsAction.NAME, transportService, clusterService, threadPool, actionFilters, indexNameExpressionResolver,
GetSnapshotsRequest::new);
this.snapshotsService = snapshotsService;
}
@Override
protected String executor() {
return ThreadPool.Names.GENERIC;
}
@Override
protected GetSnapshotsResponse newResponse() {
return new GetSnapshotsResponse();
}
@Override
protected ClusterBlockException checkBlock(GetSnapshotsRequest request, ClusterState state) {
return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_READ);
}
@Override
protected void masterOperation(final GetSnapshotsRequest request, ClusterState state,
final ActionListener listener) {
try {
final String repository = request.repository();
List snapshotInfoBuilder = new ArrayList<>();
final Map allSnapshotIds = new HashMap<>();
final List currentSnapshotIds = new ArrayList<>();
for (SnapshotInfo snapshotInfo : snapshotsService.currentSnapshots(repository)) {
SnapshotId snapshotId = snapshotInfo.snapshotId();
allSnapshotIds.put(snapshotId.getName(), snapshotId);
currentSnapshotIds.add(snapshotId);
}
if (isCurrentSnapshotsOnly(request.snapshots()) == false) {
for (SnapshotId snapshotId : snapshotsService.snapshotIds(repository)) {
allSnapshotIds.put(snapshotId.getName(), snapshotId);
}
}
final Set toResolve = new HashSet<>();
if (isAllSnapshots(request.snapshots())) {
toResolve.addAll(allSnapshotIds.values());
} else {
for (String snapshotOrPattern : request.snapshots()) {
if (GetSnapshotsRequest.CURRENT_SNAPSHOT.equalsIgnoreCase(snapshotOrPattern)) {
toResolve.addAll(currentSnapshotIds);
} else if (Regex.isSimpleMatchPattern(snapshotOrPattern) == false) {
if (allSnapshotIds.containsKey(snapshotOrPattern)) {
toResolve.add(allSnapshotIds.get(snapshotOrPattern));
} else if (request.ignoreUnavailable() == false) {
throw new SnapshotMissingException(repository, snapshotOrPattern);
}
} else {
for (Map.Entry entry : allSnapshotIds.entrySet()) {
if (Regex.simpleMatch(snapshotOrPattern, entry.getKey())) {
toResolve.add(entry.getValue());
}
}
}
}
if (toResolve.isEmpty() && request.ignoreUnavailable() == false && isCurrentSnapshotsOnly(request.snapshots()) == false) {
throw new SnapshotMissingException(repository, request.snapshots()[0]);
}
}
snapshotInfoBuilder.addAll(snapshotsService.snapshots(repository, new ArrayList<>(toResolve), request.ignoreUnavailable()));
listener.onResponse(new GetSnapshotsResponse(snapshotInfoBuilder));
} catch (Exception e) {
listener.onFailure(e);
}
}
private boolean isAllSnapshots(String[] snapshots) {
return (snapshots.length == 0) || (snapshots.length == 1 && GetSnapshotsRequest.ALL_SNAPSHOTS.equalsIgnoreCase(snapshots[0]));
}
private boolean isCurrentSnapshotsOnly(String[] snapshots) {
return (snapshots.length == 1 && GetSnapshotsRequest.CURRENT_SNAPSHOT.equalsIgnoreCase(snapshots[0]));
}
}