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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.gateway;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.ActionFuture;
import org.elasticsearch.action.FailedNodeException;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.nodes.BaseNodeRequest;
import org.elasticsearch.action.support.nodes.BaseNodeResponse;
import org.elasticsearch.action.support.nodes.BaseNodesRequest;
import org.elasticsearch.action.support.nodes.BaseNodesResponse;
import org.elasticsearch.action.support.nodes.TransportNodesAction;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicReferenceArray;
/**
*
*/
public class TransportNodesListGatewayMetaState extends TransportNodesAction<TransportNodesListGatewayMetaState.Request, TransportNodesListGatewayMetaState.NodesGatewayMetaState, TransportNodesListGatewayMetaState.NodeRequest, TransportNodesListGatewayMetaState.NodeGatewayMetaState> {
public static final String ACTION_NAME = "internal:gateway/local/meta_state";
private GatewayMetaState metaState;
@Inject
public TransportNodesListGatewayMetaState(Settings settings, ClusterName clusterName, ThreadPool threadPool,
ClusterService clusterService, TransportService transportService,
ActionFilters actionFilters, IndexNameExpressionResolver indexNameExpressionResolver) {
super(settings, ACTION_NAME, clusterName, threadPool, clusterService, transportService, actionFilters,
indexNameExpressionResolver, Request.class, NodeRequest.class, ThreadPool.Names.GENERIC);
}
TransportNodesListGatewayMetaState init(GatewayMetaState metaState) {
this.metaState = metaState;
return this;
}
public ActionFuture<NodesGatewayMetaState> list(String[] nodesIds, @Nullable TimeValue timeout) {
return execute(new Request(nodesIds).timeout(timeout));
}
@Override
protected boolean transportCompress() {
return true; // compress since the metadata can become large
}
@Override
protected NodeRequest newNodeRequest(String nodeId, Request request) {
return new NodeRequest(nodeId, request);
}
@Override
protected NodeGatewayMetaState newNodeResponse() {
return new NodeGatewayMetaState();
}
@Override
protected NodesGatewayMetaState newResponse(Request request, AtomicReferenceArray responses) {
final List<NodeGatewayMetaState> nodesList = new ArrayList<>();
final List<FailedNodeException> failures = new ArrayList<>();
for (int i = 0; i < responses.length(); i++) {
Object resp = responses.get(i);
if (resp instanceof NodeGatewayMetaState) { // will also filter out null response for unallocated ones
nodesList.add((NodeGatewayMetaState) resp);
} else if (resp instanceof FailedNodeException) {
failures.add((FailedNodeException) resp);
} else {
logger.warn("unknown response type [{}], expected NodeLocalGatewayMetaState or FailedNodeException", resp);
}
}
return new NodesGatewayMetaState(clusterName, nodesList.toArray(new NodeGatewayMetaState[nodesList.size()]),
failures.toArray(new FailedNodeException[failures.size()]));
}
@Override
protected NodeGatewayMetaState nodeOperation(NodeRequest request) {
try {
return new NodeGatewayMetaState(clusterService.localNode(), metaState.loadMetaState());
} catch (Exception e) {
throw new ElasticsearchException("failed to load metadata", e);
}
}
@Override
protected boolean accumulateExceptions() {
return true;
}
public static class Request extends BaseNodesRequest<Request> {
public Request() {
}
public Request(String... nodesIds) {
super(nodesIds);
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
}
}
public static class NodesGatewayMetaState extends BaseNodesResponse<NodeGatewayMetaState> {
private FailedNodeException[] failures;
NodesGatewayMetaState() {
}
public NodesGatewayMetaState(ClusterName clusterName, NodeGatewayMetaState[] nodes, FailedNodeException[] failures) {
super(clusterName, nodes);
this.failures = failures;
}
public FailedNodeException[] failures() {
return failures;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
nodes = new NodeGatewayMetaState[in.readVInt()];
for (int i = 0; i < nodes.length; i++) {
nodes[i] = new NodeGatewayMetaState();
nodes[i].readFrom(in);
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeVInt(nodes.length);
for (NodeGatewayMetaState response : nodes) {
response.writeTo(out);
}
}
}
public static class NodeRequest extends BaseNodeRequest {
public NodeRequest() {
}
NodeRequest(String nodeId, TransportNodesListGatewayMetaState.Request request) {
super(request, nodeId);
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
}
}
public static class NodeGatewayMetaState extends BaseNodeResponse {
private MetaData metaData;
NodeGatewayMetaState() {
}
public NodeGatewayMetaState(DiscoveryNode node, MetaData metaData) {
super(node);
this.metaData = metaData;
}
public MetaData metaData() {
return metaData;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
if (in.readBoolean()) {
metaData = MetaData.Builder.readFrom(in);
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
if (metaData == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
metaData.writeTo(out);
}
}
}
}