/*
* Copyright (C) 2014 Jörg Prante
*
* Licensed 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.
*/
package org.xbib.elasticsearch.rest.action.knapsack.pull;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.logging.ESLoggerFactory;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.BytesRestResponse;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.action.search.RestSearchAction;
import org.elasticsearch.rest.action.support.RestToXContentListener;
import org.xbib.elasticsearch.action.knapsack.pull.KnapsackPullAction;
import org.xbib.elasticsearch.action.knapsack.pull.KnapsackPullRequest;
import org.xbib.elasticsearch.action.knapsack.pull.KnapsackPullResponse;
import org.xbib.elasticsearch.knapsack.KnapsackHelper;
import org.xbib.elasticsearch.knapsack.KnapsackParameter;
import java.util.Map;
import static org.elasticsearch.rest.RestRequest.Method.POST;
/**
* The REST knapsack pull action transfers a remote index into an Elasticsearch cluster
*/
public class RestKnapsackPullAction extends BaseRestHandler implements KnapsackParameter {
private final static ESLogger logger = ESLoggerFactory.getLogger(RestKnapsackPullAction.class.getSimpleName());
@Inject
public RestKnapsackPullAction(Settings settings, Client client, RestController controller) {
super(settings, controller, client);
controller.registerHandler(POST, "/_pull", this);
controller.registerHandler(POST, "/{index}/_pull", this);
controller.registerHandler(POST, "/{index}/{type}/_pull", this);
}
@Override
public void handleRequest(final RestRequest request, RestChannel channel, Client client) {
try {
final String index = request.param(INDEX_PARAM, "_all");
final String type = request.param(TYPE_PARAM);
KnapsackPullRequest pullRequest = new KnapsackPullRequest()
.setIndex(index)
.setType(type)
.setHost(request.param(HOST_PARAM, "localhost"))
.setPort(request.paramAsInt(PORT_PARAM, 9300))
.setCluster(request.param(CLUSTER_PARAM))
.setSniff(request.paramAsBoolean(SNIFF_PARAM, true))
.setMaxActionsPerBulkRequest(request.paramAsInt(MAX_BULK_ACTIONS_PER_REQUEST_PARAM, 1000))
.setMaxBulkConcurrency(request.paramAsInt(MAX_BULK_CONCURRENCY_PARAM,
Runtime.getRuntime().availableProcessors() * 2))
.setTimeout(request.paramAsTime(TIMEOUT_PARAM, TimeValue.timeValueSeconds(30)))
.withMetadata(request.paramAsBoolean(WITH_METADATA_PARAM, true))
.setIndexTypeNames(KnapsackHelper.toMap(request.param(MAP_PARAM), logger))
.setSearchRequest(toSearchRequest(request));
// add user-defined settings and mappings
for (Map.Entry<String, String> e : request.params().entrySet()) {
if (e.getKey().endsWith("_settings")) {
pullRequest.addIndexSettings(e.getKey(), e.getValue());
} else if (e.getKey().endsWith("_mapping")) {
pullRequest.addIndexTypeMapping(e.getKey(), e.getValue());
}
}
client.admin().indices().execute(KnapsackPullAction.INSTANCE, pullRequest,
new RestToXContentListener<KnapsackPullResponse>(channel));
} catch (Throwable ex) {
try {
logger.error(ex.getMessage(), ex);
channel.sendResponse(new BytesRestResponse(channel, ex));
} catch (Exception ex2) {
logger.error(ex2.getMessage(), ex2);
}
}
}
private SearchRequest toSearchRequest(RestRequest request) {
// override search action "size" (default = 10) by bulk request size. The size is per shard!
request.params().put("size", request.param(MAX_BULK_ACTIONS_PER_REQUEST_PARAM, "1000"));
SearchRequest searchRequest = new SearchRequest();
RestSearchAction.parseSearchRequest(searchRequest, request, parseFieldMatcher, null);
return searchRequest;
}
}