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/*
* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* 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.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*/
package org.opensearch.action.admin.indices.dangling.list;
import org.opensearch.action.FailedNodeException;
import org.opensearch.action.admin.indices.dangling.DanglingIndexInfo;
import org.opensearch.action.support.nodes.BaseNodesResponse;
import org.opensearch.cluster.ClusterName;
import org.opensearch.common.io.stream.StreamInput;
import org.opensearch.common.io.stream.StreamOutput;
import org.opensearch.common.xcontent.StatusToXContentObject;
import org.opensearch.common.xcontent.XContent;
import org.opensearch.common.xcontent.XContentBuilder;
import org.opensearch.rest.RestStatus;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
/**
* Models a response to a {@link ListDanglingIndicesRequest}. A list request queries every node in the
* cluster and aggregates their responses. When the aggregated response is converted to {@link XContent},
* information for each dangling index is presented under the "dangling_indices" key. If any nodes
* in the cluster failed to answer, the details are presented under the "_nodes.failures" key.
*/
public class ListDanglingIndicesResponse extends BaseNodesResponse implements StatusToXContentObject {
public ListDanglingIndicesResponse(StreamInput in) throws IOException {
super(in);
}
public ListDanglingIndicesResponse(
ClusterName clusterName,
List nodes,
List failures
) {
super(clusterName, nodes, failures);
}
@Override
public RestStatus status() {
return this.hasFailures() ? RestStatus.INTERNAL_SERVER_ERROR : RestStatus.OK;
}
// Visible for testing
static Collection resultsByIndexUUID(List nodes) {
Map byIndexUUID = new HashMap<>();
for (NodeListDanglingIndicesResponse nodeResponse : nodes) {
for (DanglingIndexInfo info : nodeResponse.getDanglingIndices()) {
final String indexUUID = info.getIndexUUID();
final AggregatedDanglingIndexInfo aggregatedInfo = byIndexUUID.computeIfAbsent(
indexUUID,
(_uuid) -> new AggregatedDanglingIndexInfo(indexUUID, info.getIndexName(), info.getCreationDateMillis())
);
aggregatedInfo.nodeIds.add(info.getNodeId());
}
}
return byIndexUUID.values();
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startArray("dangling_indices");
for (AggregatedDanglingIndexInfo info : resultsByIndexUUID(this.getNodes())) {
builder.startObject();
builder.field("index_name", info.indexName);
builder.field("index_uuid", info.indexUUID);
builder.timeField("creation_date_millis", "creation_date", info.creationDateMillis);
builder.array("node_ids", info.nodeIds.toArray(new String[0]));
builder.endObject();
}
return builder.endArray();
}
@Override
protected List readNodesFrom(StreamInput in) throws IOException {
return in.readList(NodeListDanglingIndicesResponse::new);
}
@Override
protected void writeNodesTo(StreamOutput out, List nodes) throws IOException {
out.writeList(nodes);
}
// visible for testing
static class AggregatedDanglingIndexInfo {
private final String indexUUID;
private final String indexName;
private final long creationDateMillis;
private final List nodeIds;
AggregatedDanglingIndexInfo(String indexUUID, String indexName, long creationDateMillis) {
this.indexUUID = indexUUID;
this.indexName = indexName;
this.creationDateMillis = creationDateMillis;
this.nodeIds = new ArrayList<>();
}
// the methods below are used in the unit tests
public List getNodeIds() {
return nodeIds;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
AggregatedDanglingIndexInfo that = (AggregatedDanglingIndexInfo) o;
return creationDateMillis == that.creationDateMillis
&& indexUUID.equals(that.indexUUID)
&& indexName.equals(that.indexName)
&& nodeIds.equals(that.nodeIds);
}
@Override
public int hashCode() {
return Objects.hash(indexUUID, indexName, creationDateMillis, nodeIds);
}
@Override
public String toString() {
return String.format(
Locale.ROOT,
"AggregatedDanglingIndexInfo{indexUUID='%s', indexName='%s', creationDateMillis=%d, nodeIds=%s}",
indexUUID,
indexName,
creationDateMillis,
nodeIds
);
}
}
}