org.apache.camel.component.elasticsearch.converter.ElasticsearchActionRequestConverter Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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,
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* limitations under the License.
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package org.apache.camel.component.elasticsearch.converter;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.camel.Converter;
import org.apache.camel.Exchange;
import org.apache.camel.component.elasticsearch.ElasticsearchConstants;
import org.apache.camel.util.ObjectHelper;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Converter(generateLoader = true)
public final class ElasticsearchActionRequestConverter {
private static final Logger LOG = LoggerFactory.getLogger(ElasticsearchActionRequestConverter.class);
private static final String ES_QUERY_DSL_PREFIX = "query";
private ElasticsearchActionRequestConverter() {
}
// Update requests
private static UpdateRequest createUpdateRequest(Object document, Exchange exchange) {
if (document instanceof UpdateRequest) {
return (UpdateRequest) document;
}
UpdateRequest updateRequest = new UpdateRequest();
if (document instanceof byte[]) {
updateRequest.doc((byte[]) document);
} else if (document instanceof Map) {
updateRequest.doc((Map) document);
} else if (document instanceof String) {
updateRequest.doc((String) document, XContentFactory.xContentType((String) document));
} else if (document instanceof XContentBuilder) {
updateRequest.doc((XContentBuilder) document);
} else {
return null;
}
return updateRequest
.waitForActiveShards(
exchange.getIn().getHeader(ElasticsearchConstants.PARAM_WAIT_FOR_ACTIVE_SHARDS, Integer.class))
.index(exchange.getIn().getHeader(ElasticsearchConstants.PARAM_INDEX_NAME, String.class))
.id(exchange.getIn().getHeader(ElasticsearchConstants.PARAM_INDEX_ID, String.class));
}
// Index requests
private static IndexRequest createIndexRequest(Object document, Exchange exchange) {
if (document instanceof IndexRequest) {
return (IndexRequest) document;
}
IndexRequest indexRequest = new IndexRequest();
if (document instanceof byte[]) {
indexRequest.source((byte[]) document, XContentFactory.xContentType((byte[]) document));
} else if (document instanceof Map) {
indexRequest.source((Map) document);
} else if (document instanceof String) {
indexRequest.source((String) document, XContentFactory.xContentType((String) document));
} else if (document instanceof XContentBuilder) {
indexRequest.source((XContentBuilder) document);
} else {
return null;
}
return indexRequest
.waitForActiveShards(
exchange.getIn().getHeader(ElasticsearchConstants.PARAM_WAIT_FOR_ACTIVE_SHARDS, Integer.class))
.index(exchange.getIn().getHeader(ElasticsearchConstants.PARAM_INDEX_NAME, String.class));
}
@Converter
public static IndexRequest toIndexRequest(Object document, Exchange exchange) {
IndexRequest indexRequest = createIndexRequest(document, exchange);
// NOTE: although we dodge the NPE here, it may still throw it somewhere else
if (indexRequest != null) {
indexRequest.id(exchange.getIn().getHeader(ElasticsearchConstants.PARAM_INDEX_ID, String.class));
}
return indexRequest;
}
@Converter
public static UpdateRequest toUpdateRequest(Object document, Exchange exchange) {
UpdateRequest updateRequest = createUpdateRequest(document, exchange);
// NOTE: although we dodge the NPE here, it may still throw it somewhere else
if (updateRequest != null) {
updateRequest.id(exchange.getIn().getHeader(ElasticsearchConstants.PARAM_INDEX_ID, String.class));
}
return updateRequest;
}
@Converter
public static GetRequest toGetRequest(Object document, Exchange exchange) {
if (document instanceof GetRequest) {
return (GetRequest) document;
}
if (document instanceof String) {
return new GetRequest(exchange.getIn().getHeader(ElasticsearchConstants.PARAM_INDEX_NAME, String.class))
.id((String) document);
}
return null;
}
@Converter
public static DeleteRequest toDeleteRequest(Object document, Exchange exchange) {
if (document instanceof DeleteRequest) {
return (DeleteRequest) document;
}
if (document instanceof String) {
return new DeleteRequest().index(exchange.getIn().getHeader(ElasticsearchConstants.PARAM_INDEX_NAME, String.class))
.id((String) document);
}
return null;
}
@Converter
public static DeleteIndexRequest toDeleteIndexRequest(Object document, Exchange exchange) {
if (document instanceof DeleteIndexRequest) {
return (DeleteIndexRequest) document;
}
if (document instanceof String) {
String index = exchange.getIn().getHeader(ElasticsearchConstants.PARAM_INDEX_NAME, String.class);
return new DeleteIndexRequest(index);
}
return null;
}
@Converter
public static SearchRequest toSearchRequest(Object queryObject, Exchange exchange) throws IOException {
String indexName = exchange.getIn().getHeader(ElasticsearchConstants.PARAM_INDEX_NAME, String.class);
if (queryObject instanceof SearchRequest) {
SearchRequest searchRequest = (SearchRequest) queryObject;
String[] indices = searchRequest.indices();
if (indices == null || indices.length == 0) {
searchRequest.indices(indexName);
}
return searchRequest;
}
SearchRequest searchRequest = new SearchRequest();
// Only setup the indexName if the message header has the
// setting
Integer size = exchange.getIn().getHeader(ElasticsearchConstants.PARAM_SIZE, Integer.class);
Integer from = exchange.getIn().getHeader(ElasticsearchConstants.PARAM_FROM, Integer.class);
if (ObjectHelper.isNotEmpty(indexName)) {
searchRequest.indices(indexName);
}
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
String queryText = null;
if (queryObject instanceof Map) {
Map mapQuery = (Map) queryObject;
// Remove 'query' prefix from the query object for backward
// compatibility
if (mapQuery.containsKey(ES_QUERY_DSL_PREFIX)) {
mapQuery = (Map) mapQuery.get(ES_QUERY_DSL_PREFIX);
}
try (XContentBuilder contentBuilder = XContentFactory.contentBuilder(XContentType.JSON)) {
queryText = Strings.toString(contentBuilder.map(mapQuery));
} catch (IOException e) {
LOG.error("Cannot build the QueryText from the map.", e);
return null;
}
} else if (queryObject instanceof String) {
queryText = (String) queryObject;
ObjectMapper mapper = new ObjectMapper();
JsonNode jsonTextObject = mapper.readValue(queryText, JsonNode.class);
JsonNode parentJsonNode = jsonTextObject.get(ES_QUERY_DSL_PREFIX);
if (parentJsonNode != null) {
queryText = parentJsonNode.toString();
}
} else {
// Cannot convert the queryObject into SearchRequest
LOG.info("Cannot convert queryObject into SearchRequest object");
return null;
}
if (size != null) {
searchSourceBuilder.size(size);
}
if (from != null) {
searchSourceBuilder.from(from);
}
searchSourceBuilder.query(QueryBuilders.wrapperQuery(queryText));
searchRequest.source(searchSourceBuilder);
return searchRequest;
}
@Converter
public static BulkRequest toBulkRequest(Object documents, Exchange exchange) {
if (documents instanceof BulkRequest) {
return (BulkRequest) documents;
}
if (documents instanceof List) {
BulkRequest request = new BulkRequest();
for (Object document : (List) documents) {
request.add(createIndexRequest(document, exchange));
}
return request;
}
return null;
}
}
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