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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.be.dao.api;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexResponse;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.get.MultiGetItemResponse;
import org.elasticsearch.action.get.MultiGetResponse;
import org.elasticsearch.client.Client;
import org.openecomp.sdc.be.dao.es.ElasticSearchClient;
import org.openecomp.sdc.common.log.wrappers.Logger;
import org.openecomp.sdc.exception.IndexingServiceException;
import javax.annotation.Resource;
import java.io.IOException;
import java.util.*;
public abstract class ESGenericIdDAO implements IGenericIdDAO {
private static Logger log = Logger.getLogger(ESGenericIdDAO.class.getName());
@Resource(name = "elasticsearch-client")
private ElasticSearchClient esClient;
private ObjectMapper jsonMapper = new ObjectMapper();
private final Map<String, String> typesToIndices = new HashMap<>();
public Client getClient() {
return this.esClient.getClient();
}
public ElasticSearchClient getEsClient() {
return esClient;
}
public ObjectMapper getJsonMapper() {
return jsonMapper;
}
public void setJsonMapper(ObjectMapper jsonMapper) {
this.jsonMapper = jsonMapper;
}
public void addToIndicesMap(String type, String index) {
typesToIndices.put(type, index);
}
public String getIndexForType(String type) {
return typesToIndices.get(type);
}
@Override
public <T> T findById(String typeName, String id, Class<T> clazz) {
String indexName = getIndexForType(typeName);
GetResponse response = getClient().prepareGet(indexName, typeName, id).execute().actionGet();
if (response == null || !response.isExists()) {
log.debug("Nothing found in index <{}>, type <{}>, for Id <{}>.", indexName, typeName, id);
return null;
}
log.debug("Found one in index <{}>, type <{}>, for Id <{}>.", indexName, typeName, id);
T ret = null;
try {
ret = jsonMapper.readValue(response.getSourceAsString(), clazz);
} catch (IOException e) {
throw new RuntimeException(e);
}
return ret;
}
@Override
public <T> List<T> findByIds(String typeName, Class<T> clazz, String... ids) {
String indexName = getIndexForType(typeName);
MultiGetResponse response = getClient().prepareMultiGet().add(indexName, typeName, ids).execute().actionGet();
if (response == null || response.getResponses() == null || response.getResponses().length == 0) {
log.debug("Nothing found in index <{}>, type <{}>, for Ids <{}>.", indexName, typeName,
Arrays.toString(ids));
return null;
}
List<T> result = new ArrayList<>();
for (MultiGetItemResponse getItemResponse : response.getResponses()) {
if (getItemResponse.getResponse().isExists()) {
T val = null;
try {
val = jsonMapper.readValue(getItemResponse.getResponse().getSourceAsString(), clazz);
result.add(val);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
return result;
}
protected void saveResourceData(String typeName, Object data, String id) throws JsonProcessingException {
String indexName = getIndexForType(typeName);
log.debug("ESGenericIdDAO saveResourceData resource indexName: {} | typeName is: {}", indexName, typeName);
String json = getJsonMapper().writeValueAsString(data);
log.debug("ESGenericIdDAO saveResourceData resource id is: {}", id);
try {
getClient().prepareIndex(indexName, typeName, id).setSource(json).setRefresh(true).execute().actionGet();
} catch (Exception e) {
log.error("failed to write data with id {} to elasticsearch type {}. error: {}", id, typeName,
e.getMessage(), e);
throw e;
}
}
@Override
public void delete(String typeName, String id) {
assertIdNotNullFor(id, "delete");
String indexName = getIndexForType(typeName);
getClient().prepareDelete(indexName, typeName, id).setRefresh(true).execute().actionGet();
}
public void deleteIndex(String indexName) {
DeleteIndexResponse actionGet = getClient().admin().indices().delete(new DeleteIndexRequest(indexName))
.actionGet();
if (!actionGet.isAcknowledged()) {
log.error("failed to delete index {}", indexName);
}
}
private void assertIdNotNullFor(String id, String operation) {
if (id == null || id.trim().isEmpty()) {
log.error("Null or empty Id is not allowed for operation <{}>.", operation);
throw new IndexingServiceException("Null or empty Id is not allowed for operation <" + operation + ">.");
}
}
public static String indexTypeFromClass(Class<?> clazz) {
return clazz.getSimpleName().toLowerCase();
}
}
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