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* 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
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package org.elasticsearch.rest.action.cat;
import com.carrotsearch.hppc.cursors.ObjectObjectCursor;
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.metadata.IndexTemplateMetaData;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.common.Table;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.RestResponse;
import org.elasticsearch.rest.action.RestResponseListener;
import static org.elasticsearch.rest.RestRequest.Method.GET;
public class RestTemplatesAction extends AbstractCatAction {
public RestTemplatesAction(Settings settings, RestController controller) {
super(settings);
controller.registerHandler(GET, "/_cat/templates", this);
controller.registerHandler(GET, "/_cat/templates/{name}", this);
}
@Override
protected void documentation(StringBuilder sb) {
sb.append("/_cat/templates\n");
}
@Override
protected RestChannelConsumer doCatRequest(final RestRequest request, NodeClient client) {
final String matchPattern = request.hasParam("name") ? request.param("name") : null;
final ClusterStateRequest clusterStateRequest = new ClusterStateRequest();
clusterStateRequest.clear().metaData(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<ClusterStateResponse>(channel) {
@Override
public RestResponse buildResponse(ClusterStateResponse clusterStateResponse) throws Exception {
return RestTable.buildResponse(buildTable(request, clusterStateResponse, matchPattern), channel);
}
});
}
@Override
protected Table getTableWithHeader(RestRequest request) {
Table table = new Table();
table.startHeaders();
table.addCell("name", "alias:n;desc:template name");
table.addCell("index_patterns", "alias:t;desc:template index patterns");
table.addCell("order", "alias:o;desc:template application order number");
table.addCell("version", "alias:v;desc:version");
table.endHeaders();
return table;
}
private Table buildTable(RestRequest request, ClusterStateResponse clusterStateResponse, String patternString) {
Table table = getTableWithHeader(request);
MetaData metadata = clusterStateResponse.getState().metaData();
for (ObjectObjectCursor<String, IndexTemplateMetaData> entry : metadata.templates()) {
IndexTemplateMetaData indexData = entry.value;
if (patternString == null || Regex.simpleMatch(patternString, indexData.name())) {
table.startRow();
table.addCell(indexData.name());
table.addCell("[" + String.join(", ", indexData.patterns()) + "]");
table.addCell(indexData.getOrder());
table.addCell(indexData.getVersion());
table.endRow();
}
}
return table;
}
}