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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* 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
* under the License.
*/
package org.elasticsearch.rest.action.support;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.action.ShardOperationFailedException;
import org.elasticsearch.action.support.broadcast.BroadcastResponse;
import org.elasticsearch.common.ParseFieldMatcher;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.lucene.uid.Versions;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.Operator;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.QueryParseContext;
import org.elasticsearch.index.query.QueryStringQueryBuilder;
import org.elasticsearch.indices.query.IndicesQueriesRegistry;
import org.elasticsearch.rest.RestRequest;
import java.io.IOException;
/**
*
*/
public class RestActions {
public static long parseVersion(RestRequest request) {
if (request.hasParam("version")) {
return request.paramAsLong("version", Versions.MATCH_ANY);
}
String ifMatch = request.header("If-Match");
if (ifMatch != null) {
return Long.parseLong(ifMatch);
}
return Versions.MATCH_ANY;
}
public static long parseVersion(RestRequest request, long defaultVersion) {
long version = parseVersion(request);
return (version == Versions.MATCH_ANY) ? defaultVersion : version;
}
static final class Fields {
static final String _SHARDS = "_shards";
static final String TOTAL = "total";
static final String SUCCESSFUL = "successful";
static final String FAILED = "failed";
static final String FAILURES = "failures";
}
public static void buildBroadcastShardsHeader(XContentBuilder builder, ToXContent.Params params, BroadcastResponse response) throws IOException {
buildBroadcastShardsHeader(builder, params, response.getTotalShards(), response.getSuccessfulShards(), response.getFailedShards(), response.getShardFailures());
}
public static void buildBroadcastShardsHeader(XContentBuilder builder, ToXContent.Params params, int total, int successful, int failed, ShardOperationFailedException[] shardFailures) throws IOException {
builder.startObject(Fields._SHARDS);
builder.field(Fields.TOTAL, total);
builder.field(Fields.SUCCESSFUL, successful);
builder.field(Fields.FAILED, failed);
if (shardFailures != null && shardFailures.length > 0) {
builder.startArray(Fields.FAILURES);
final boolean group = params.paramAsBoolean("group_shard_failures", true); // we group by default
for (ShardOperationFailedException shardFailure : group ? ExceptionsHelper.groupBy(shardFailures) : shardFailures) {
builder.startObject();
shardFailure.toXContent(builder, params);
builder.endObject();
}
builder.endArray();
}
builder.endObject();
}
public static QueryBuilder urlParamsToQueryBuilder(RestRequest request) {
String queryString = request.param("q");
if (queryString == null) {
return null;
}
QueryStringQueryBuilder queryBuilder = QueryBuilders.queryStringQuery(queryString);
queryBuilder.defaultField(request.param("df"));
queryBuilder.analyzer(request.param("analyzer"));
queryBuilder.analyzeWildcard(request.paramAsBoolean("analyze_wildcard", false));
queryBuilder.lowercaseExpandedTerms(request.paramAsBoolean("lowercase_expanded_terms", true));
queryBuilder.lenient(request.paramAsBoolean("lenient", null));
String defaultOperator = request.param("default_operator");
if (defaultOperator != null) {
queryBuilder.defaultOperator(Operator.fromString(defaultOperator));
}
return queryBuilder;
}
/**
* Get Rest content from either payload or source parameter
* @param request Rest request
* @return rest content
*/
public static BytesReference getRestContent(RestRequest request) {
assert request != null;
BytesReference content = request.content();
if (!request.hasContent()) {
String source = request.param("source");
if (source != null) {
content = new BytesArray(source);
}
}
return content;
}
public static QueryBuilder getQueryContent(BytesReference source, IndicesQueriesRegistry indicesQueriesRegistry, ParseFieldMatcher parseFieldMatcher) {
try (XContentParser requestParser = XContentFactory.xContent(source).createParser(source)) {
QueryParseContext context = new QueryParseContext(indicesQueriesRegistry, requestParser, parseFieldMatcher);
return context.parseTopLevelQueryBuilder();
} catch (IOException e) {
throw new ElasticsearchException("failed to parse source", e);
}
}
/**
* guesses the content type from either payload or source parameter
* @param request Rest request
* @return rest content type or <code>null</code> if not applicable.
*/
public static XContentType guessBodyContentType(final RestRequest request) {
final BytesReference restContent = RestActions.getRestContent(request);
if (restContent == null) {
return null;
}
return XContentFactory.xContentType(restContent);
}
/**
* Returns <code>true</code> if either payload or source parameter is present. Otherwise <code>false</code>
*/
public static boolean hasBodyContent(final RestRequest request) {
return request.hasContent() || request.hasParam("source");
}
}
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