org.elasticsearch.rest.action.admin.indices.template.get.RestGetIndexTemplateAction Maven / Gradle / Ivy
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* the Apache License, Version 2.0 (the "License"); you may
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.elasticsearch.rest.action.admin.indices.template.get;
import com.google.common.collect.Maps;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.template.get.GetIndexTemplatesRequest;
import org.elasticsearch.action.admin.indices.template.get.GetIndexTemplatesResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.cluster.metadata.IndexTemplateMetaData;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestXContentBuilder;
import java.util.Map;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestStatus.NOT_FOUND;
import static org.elasticsearch.rest.RestStatus.OK;
/**
*
*/
public class RestGetIndexTemplateAction extends BaseRestHandler {
@Inject
public RestGetIndexTemplateAction(Settings settings, Client client, RestController controller) {
super(settings, client);
controller.registerHandler(GET, "/_template", this);
controller.registerHandler(GET, "/_template/{name}", this);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel) {
final String[] names = Strings.splitStringByCommaToArray(request.param("name"));
GetIndexTemplatesRequest getIndexTemplatesRequest = new GetIndexTemplatesRequest(names);
getIndexTemplatesRequest.listenerThreaded(false);
final boolean implicitAll = getIndexTemplatesRequest.names().length == 0;
client.admin().indices().getTemplates(getIndexTemplatesRequest, new ActionListener() {
@Override
public void onResponse(GetIndexTemplatesResponse getIndexTemplatesResponse) {
try {
boolean templateExists = getIndexTemplatesResponse.getIndexTemplates().size() > 0;
Map paramsMap = Maps.newHashMap();
paramsMap.put("reduce_mappings", "true");
ToXContent.Params params = new ToXContent.DelegatingMapParams(paramsMap, request);
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
for (IndexTemplateMetaData indexTemplateMetaData : getIndexTemplatesResponse.getIndexTemplates()) {
IndexTemplateMetaData.Builder.toXContent(indexTemplateMetaData, builder, params);
}
builder.endObject();
RestStatus restStatus = (templateExists || implicitAll) ? OK : NOT_FOUND;
channel.sendResponse(new XContentRestResponse(request, restStatus, builder));
} catch (Throwable e) {
onFailure(e);
}
}
@Override
public void onFailure(Throwable e) {
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (Exception e1) {
logger.error("Failed to send failure response", e1);
}
}
});
}
}