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Elasticsearch subproject :distribution:archives:integ-test-zip
/*
* 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.rest.action.cat;
import org.elasticsearch.action.admin.cluster.state.ClusterStateRequest;
import org.elasticsearch.action.admin.cluster.state.ClusterStateResponse;
import org.elasticsearch.client.node.NodeClient;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.common.Table;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.RestResponse;
import org.elasticsearch.rest.action.RestResponseListener;
import java.util.List;
import static java.util.Collections.singletonList;
import static org.elasticsearch.rest.RestRequest.Method.GET;
public class RestMasterAction extends AbstractCatAction {
@Override
public List routes() {
return singletonList(new Route(GET, "/_cat/master"));
}
@Override
public String getName() {
return "cat_master_action";
}
@Override
protected void documentation(StringBuilder sb) {
sb.append("/_cat/master\n");
}
@Override
public RestChannelConsumer doCatRequest(final RestRequest request, final NodeClient client) {
final ClusterStateRequest clusterStateRequest = new ClusterStateRequest();
clusterStateRequest.clear().nodes(true);
clusterStateRequest.local(request.paramAsBoolean("local", clusterStateRequest.local()));
clusterStateRequest.masterNodeTimeout(request.paramAsTime("master_timeout", clusterStateRequest.masterNodeTimeout()));
return channel -> client.admin().cluster().state(clusterStateRequest, new RestResponseListener(channel) {
@Override
public RestResponse buildResponse(final ClusterStateResponse clusterStateResponse) throws Exception {
return RestTable.buildResponse(buildTable(request, clusterStateResponse), channel);
}
});
}
@Override
protected Table getTableWithHeader(final RestRequest request) {
Table table = new Table();
table.startHeaders()
.addCell("id", "desc:node id")
.addCell("host", "alias:h;desc:host name")
.addCell("ip", "desc:ip address ")
.addCell("node", "alias:n;desc:node name")
.endHeaders();
return table;
}
private Table buildTable(RestRequest request, ClusterStateResponse state) {
Table table = getTableWithHeader(request);
DiscoveryNodes nodes = state.getState().nodes();
table.startRow();
DiscoveryNode master = nodes.get(nodes.getMasterNodeId());
if (master == null) {
table.addCell("-");
table.addCell("-");
table.addCell("-");
table.addCell("-");
} else {
table.addCell(master.getId());
table.addCell(master.getHostName());
table.addCell(master.getHostAddress());
table.addCell(master.getName());
}
table.endRow();
return table;
}
}