org.elasticsearch.rest.action.admin.indices.settings.RestGetSettingsAction 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.settings;
import com.carrotsearch.hppc.cursors.ObjectObjectCursor;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.settings.get.GetSettingsRequest;
import org.elasticsearch.action.admin.indices.settings.get.GetSettingsResponse;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentBuilderString;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestXContentBuilder;
import java.io.IOException;
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 RestGetSettingsAction extends BaseRestHandler {
@Inject
public RestGetSettingsAction(Settings settings, Client client, RestController controller) {
super(settings, client);
controller.registerHandler(GET, "/_settings", this);
controller.registerHandler(GET, "/{index}/_settings", this);
controller.registerHandler(GET, "/{index}/_settings/{name}", this);
controller.registerHandler(GET, "/_settings/{name}", this);
controller.registerHandler(GET, "/{index}/_setting/{name}", this);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel) {
final String[] names = request.paramAsStringArrayOrEmptyIfAll("name");
GetSettingsRequest getSettingsRequest = new GetSettingsRequest()
.indices(Strings.splitStringByCommaToArray(request.param("index")))
.indicesOptions(IndicesOptions.fromRequest(request, IndicesOptions.strict()))
.names(names);
client.admin().indices().getSettings(getSettingsRequest, new ActionListener() {
@Override
public void onResponse(GetSettingsResponse getSettingsResponse) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
for (ObjectObjectCursor cursor : getSettingsResponse.getIndexToSettings()) {
// no settings, jump over it to shorten the response data
if (cursor.value.getAsMap().isEmpty()) {
continue;
}
builder.startObject(cursor.key, XContentBuilder.FieldCaseConversion.NONE);
builder.startObject(Fields.SETTINGS);
cursor.value.toXContent(builder, request);
builder.endObject();
builder.endObject();
}
builder.endObject();
channel.sendResponse(new XContentRestResponse(request, OK, builder));
} catch (IOException e) {
onFailure(e);
}
}
@Override
public void onFailure(Throwable e) {
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
}
});
}
static class Fields {
static final XContentBuilderString SETTINGS = new XContentBuilderString("settings");
}
}