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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.repositories;
import com.carrotsearch.hppc.ObjectContainer;
import com.carrotsearch.hppc.cursors.ObjectCursor;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.Version;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.snapshots.IndexShardRepository;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.*;
import org.elasticsearch.repositories.RepositoriesService.VerifyResponse;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicInteger;
import static com.google.common.collect.Lists.newArrayList;
public class VerifyNodeRepositoryAction extends AbstractComponent {
public static final String ACTION_NAME = "internal:admin/repository/verify";
private final TransportService transportService;
private final ClusterService clusterService;
private final RepositoriesService repositoriesService;
public VerifyNodeRepositoryAction(Settings settings, TransportService transportService, ClusterService clusterService, RepositoriesService repositoriesService) {
super(settings);
this.transportService = transportService;
this.clusterService = clusterService;
this.repositoriesService = repositoriesService;
transportService.registerHandler(ACTION_NAME, new VerifyNodeRepositoryRequestHandler());
}
public void close() {
transportService.removeHandler(ACTION_NAME);
}
public void verify(String repository, String verificationToken, final ActionListener<VerifyResponse> listener) {
final DiscoveryNodes discoNodes = clusterService.state().nodes();
final DiscoveryNode localNode = discoNodes.localNode();
final ObjectContainer<DiscoveryNode> masterAndDataNodes = discoNodes.masterAndDataNodes().values();
final List<DiscoveryNode> nodes = newArrayList();
for (ObjectCursor<DiscoveryNode> cursor : masterAndDataNodes) {
DiscoveryNode node = cursor.value;
Version version = node.getVersion();
// Verification wasn't supported before v1.4.0 - no reason to send verification request to these nodes
if (version != null && version.onOrAfter(Version.V_1_4_0)) {
nodes.add(node);
}
}
final CopyOnWriteArrayList<VerificationFailure> errors = new CopyOnWriteArrayList<>();
final AtomicInteger counter = new AtomicInteger(nodes.size());
for (final DiscoveryNode node : nodes) {
if (node.equals(localNode)) {
try {
doVerify(repository, verificationToken);
} catch (Throwable t) {
errors.add(new VerificationFailure(node.id(), ExceptionsHelper.detailedMessage(t)));
}
if (counter.decrementAndGet() == 0) {
finishVerification(listener, nodes, errors);
}
} else {
transportService.sendRequest(node, ACTION_NAME, new VerifyNodeRepositoryRequest(repository, verificationToken), new EmptyTransportResponseHandler(ThreadPool.Names.SAME) {
@Override
public void handleResponse(TransportResponse.Empty response) {
if (counter.decrementAndGet() == 0) {
finishVerification(listener, nodes, errors);
}
}
@Override
public void handleException(TransportException exp) {
errors.add(new VerificationFailure(node.id(), ExceptionsHelper.detailedMessage(exp)));
if (counter.decrementAndGet() == 0) {
finishVerification(listener, nodes, errors);
}
}
});
}
}
}
public void finishVerification(ActionListener<VerifyResponse> listener, List<DiscoveryNode> nodes, CopyOnWriteArrayList<VerificationFailure> errors) {
listener.onResponse(new RepositoriesService.VerifyResponse(nodes.toArray(new DiscoveryNode[nodes.size()]), errors.toArray(new VerificationFailure[errors.size()])));
}
private void doVerify(String repository, String verificationToken) {
IndexShardRepository blobStoreIndexShardRepository = repositoriesService.indexShardRepository(repository);
blobStoreIndexShardRepository.verify(verificationToken);
}
private class VerifyNodeRepositoryRequest extends TransportRequest {
private String repository;
private String verificationToken;
private VerifyNodeRepositoryRequest() {
}
private VerifyNodeRepositoryRequest(String repository, String verificationToken) {
this.repository = repository;
this.verificationToken = verificationToken;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
repository = in.readString();
verificationToken = in.readString();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeString(repository);
out.writeString(verificationToken);
}
}
private class VerifyNodeRepositoryRequestHandler extends BaseTransportRequestHandler<VerifyNodeRepositoryRequest> {
@Override
public VerifyNodeRepositoryRequest newInstance() {
return new VerifyNodeRepositoryRequest();
}
@Override
public String executor() {
return ThreadPool.Names.SAME;
}
@Override
public void messageReceived(VerifyNodeRepositoryRequest request, TransportChannel channel) throws Exception {
doVerify(request.repository, request.verificationToken);
channel.sendResponse(TransportResponse.Empty.INSTANCE);
}
}
}