2 * ============LICENSE_START=======================================================
3 * ONAP : ccsdk features
4 * ================================================================================
5 * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property.
7 * ================================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 * ============LICENSE_END=========================================================
22 package org.onap.ccsdk.features.sdnr.wt.dataprovider.database.elasticsearch;
24 import com.fasterxml.jackson.core.JsonProcessingException;
25 import java.io.IOException;
26 import java.lang.reflect.Field;
27 import java.lang.reflect.InvocationTargetException;
28 import java.util.List;
29 import javax.annotation.Nonnull;
30 import javax.annotation.Nullable;
31 import org.onap.ccsdk.features.sdnr.wt.common.database.DatabaseClient;
32 import org.onap.ccsdk.features.sdnr.wt.common.database.SearchHit;
33 import org.onap.ccsdk.features.sdnr.wt.common.database.SearchResult;
34 import org.onap.ccsdk.features.sdnr.wt.common.database.queries.QueryBuilder;
35 import org.onap.ccsdk.features.sdnr.wt.yang.mapper.YangToolsMapper2;
36 import org.onap.ccsdk.features.sdnr.wt.yang.mapper.YangToolsMapperHelper;
37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev201110.Entity;
38 import org.opendaylight.yangtools.yang.binding.DataObject;
39 import org.slf4j.Logger;
40 import org.slf4j.LoggerFactory;
43 * Class to rw yang-tool generated objects into elasticsearch database. For "ES _id" exchange the esIdAddAtributteName
44 * is used. This attribute mast be of type String and contains for read and write operations the object id. The function
45 * can be used without id handling. If id handling is required the parameter needs to be specified by class definition
46 * in yang and setting the name by using setAttributeName()
48 * Due to using Jackson base interfaces the org.eclipse.jdt.annotation.NonNull needs to be used here to get rid of
51 * @param <T> Yang tools generated class object.
53 public class EsDataObjectReaderWriter2<T extends DataObject> {
55 private static final Logger LOG = LoggerFactory.getLogger(EsDataObjectReaderWriter2.class);
57 /** Typename for elastic search data schema **/
58 private String dataTypeName;
60 /** Elasticsearch Database client to be used **/
61 protected DatabaseClient db;
63 /** Mapper with configuration to use opendaylight yang-tools builder pattern for object creation **/
64 private YangToolsMapper2<T> yangtoolsMapper;
66 /** Class of T as attribute to allow JSON to Class object mapping **/
67 private Class<T> clazz;
69 /** Field is used to write id. If null no id handling **/
70 private @Nullable Field field;
72 /** Attribute that is used as id field for the database object **/
73 private @Nullable String esIdAddAtributteName;
75 /** Interface to be used for write operations. Rule for write: T extends S and **/
76 private Class<? extends DataObject> writeInterfaceClazz; // == "S"
77 /** Flag true to sync this attribute during write always, what is slow and false do not sync */
78 private final boolean syncAfterWrite;
80 protected boolean doFullsizeRequest;
83 * Elasticsearch database read and write for specific class, defined by opendaylight yang-tools.
87 * @param db Database access client
88 * @param dataTypeName typename in database schema
89 * @param clazz class of type to be handled
90 * @param builderClazz class to build related object if builder pattern should be used.
91 * @param syncAfterWrite
92 * @throws ClassNotFoundException
94 public <X extends T, B> EsDataObjectReaderWriter2(DatabaseClient db,
95 String dataTypeName, @Nonnull Class<T> clazz, @Nullable Class<B> builderClazz, boolean syncAfterWrite)
96 throws ClassNotFoundException {
97 LOG.info("Create {} for datatype {} class {}", this.getClass().getName(), dataTypeName, clazz.getName());
99 this.esIdAddAtributteName = null;
101 this.writeInterfaceClazz = clazz;
103 this.dataTypeName = dataTypeName;
104 this.yangtoolsMapper = new YangToolsMapper2<>(clazz, builderClazz);
106 this.syncAfterWrite = syncAfterWrite;
107 this.doFullsizeRequest = false;
110 public void setFullsizeRequest(boolean fullsizeRequest) {
111 this.doFullsizeRequest = fullsizeRequest;
113 public <X extends T, B> EsDataObjectReaderWriter2(DatabaseClient db,
114 Entity dataTypeName, @Nonnull Class<T> clazz, @Nullable Class<B> builderClazz)
115 throws ClassNotFoundException {
116 this(db, dataTypeName.getName(), clazz, builderClazz, false);
119 public <X extends T, B> EsDataObjectReaderWriter2(DatabaseClient db,
120 Entity dataTypeName, @Nonnull Class<T> clazz, @Nullable Class<B> builderClazz, boolean syncAfterWrite)
121 throws ClassNotFoundException {
122 this(db, dataTypeName.getName(), clazz, builderClazz, syncAfterWrite);
125 public EsDataObjectReaderWriter2(DatabaseClient db, Entity dataTypeName, @Nonnull Class<T> clazz,
126 boolean syncAfterWrite) throws ClassNotFoundException {
127 this(db, dataTypeName.getName(), clazz, null, syncAfterWrite);
130 public EsDataObjectReaderWriter2(DatabaseClient db, Entity dataTypeName, Class<T> clazz)
131 throws ClassNotFoundException {
132 this(db, dataTypeName.getName(), clazz, null, false);
138 * @return string with dataTypeName
140 public String getDataTypeName() {
145 * Simlar to {@link #setEsIdAttributeName()}, but adapts the parameter to yangtools attribute naming schema
147 * @param esIdAttributeName is converted to UnderscoreCamelCase
148 * @return this for further operations.
150 public EsDataObjectReaderWriter2<T> setEsIdAttributeNameCamelized(String esIdAttributeName) {
151 return setEsIdAttributeName(YangToolsMapperHelper.toCamelCaseAttributeName(esIdAttributeName));
155 * Attribute name of class that is containing the object id
157 * @param esIdAttributeName of the implementation class for the yangtools interface. Expected attribute name format
158 * is CamelCase with leading underline. @
159 * @return this for further operations.
160 * @throws SecurityException if no access or IllegalArgumentException if wrong type or no attribute with this name.
162 public <B> EsDataObjectReaderWriter2<T> setEsIdAttributeName(String esIdAttributeName) {
163 LOG.debug("Set attribute '{}'", esIdAttributeName);
164 this.esIdAddAtributteName = null; // Reset status
167 Field attributeField;
169 B builder = yangtoolsMapper.getBuilder(clazz);
170 if (builder == null) {
171 String msg = "No builder for " + clazz;
173 throw new IllegalArgumentException(msg);
175 T object = YangToolsMapperHelper.callBuild(builder);
176 attributeField = object.getClass().getDeclaredField(esIdAttributeName);
177 if (attributeField.getType().equals(String.class)) {
178 attributeField.setAccessible(true);
179 this.esIdAddAtributteName = esIdAttributeName; // Set new status if everything OK
180 this.field = attributeField;
182 String msg = "Wrong field type " + attributeField.getType().getName() + " of " + esIdAttributeName;
184 throw new IllegalArgumentException(msg);
187 } catch (NoSuchFieldException e) {
188 // Convert to run-time exception
189 String msg = "NoSuchFieldException for '" + esIdAttributeName + "' in class " + clazz.getName();
191 throw new IllegalArgumentException(msg);
192 } catch (SecurityException e) {
193 LOG.debug("Access problem " + esIdAttributeName, e);
195 } catch (NoSuchMethodException e) {
196 // TODO Auto-generated catch block
198 } catch (IllegalAccessException e) {
199 // TODO Auto-generated catch block
201 } catch (IllegalArgumentException e) {
202 // TODO Auto-generated catch block
204 } catch (InvocationTargetException e) {
205 // TODO Auto-generated catch block
212 * Specify subclass of T for write operations.
214 * @param writeInterfaceClazz
216 public EsDataObjectReaderWriter2<T> setWriteInterface(Class<? extends DataObject> writeInterfaceClazz) {
217 LOG.debug("Set write interface to {}", writeInterfaceClazz);
218 if (writeInterfaceClazz == null) {
219 throw new IllegalArgumentException("Null not allowed here.");
222 this.writeInterfaceClazz = writeInterfaceClazz;
226 public interface IdGetter<S extends DataObject> {
227 String getId(S object);
230 public <S extends DataObject> void write(List<S> objectList, IdGetter<S> idGetter) {
231 for (S object : objectList) {
232 write(object, idGetter.getId(object));
237 * Write child object to database with specific id
239 * @param object to be written
240 * @param esId use the id or if null generate unique id
241 * @return String with id or null
243 public @Nullable <S extends DataObject> String write(S object, @Nullable String esId) {
244 if (object != null && writeInterfaceClazz.isInstance(object)) {
246 String json = yangtoolsMapper.writeValueAsString(object);
247 return db.doWriteRaw(dataTypeName, esId, json, this.syncAfterWrite);
248 } catch (JsonProcessingException e) {
249 LOG.error("Write problem: ", e);
252 LOG.error("Type {} does not provide interface {}", object != null ? object.getClass().getName() : "null",
253 writeInterfaceClazz.getName());
259 * Update partial child object to database with match/term query
261 * @param <S> of object
262 * @param object to write
263 * @param query for write of specific attributes
264 * @return json string with new Object
266 public @Nullable <S extends DataObject> boolean update(S object, QueryBuilder query) {
267 if (object != null && writeInterfaceClazz.isInstance(object)) {
269 String json = yangtoolsMapper.writeValueAsString(object);
270 return db.doUpdate(this.dataTypeName, json, query);
271 } catch (JsonProcessingException e) {
272 LOG.error("Update problem: ", e);
275 LOG.error("Type {} does not provide interface {}", object != null ? object.getClass().getName() : "null",
276 writeInterfaceClazz.getName());
282 * Write/ update partial child object to database with specific id Write if not exists, else update
286 * @return String with esId or null
288 public @Nullable <S extends DataObject> String update(S object, String esId) {
289 return this.updateOrCreate(object, esId, null);
293 * See {@link doUpdateOrCreate(String dataTypeName, String esId, String json, List<String> doNotUpdateField) }
295 public @Nullable <S extends DataObject> String updateOrCreate(S object, String esId, List<String> onlyForInsert) {
296 if (object != null && writeInterfaceClazz.isInstance(object)) {
298 String json = yangtoolsMapper.writeValueAsString(object);
299 return db.doUpdateOrCreate(dataTypeName, esId, json, onlyForInsert);
300 } catch (JsonProcessingException e) {
301 LOG.error("Update problem: ", e);
304 LOG.error("Type {} does not provide interface {}", object != null ? object.getClass().getName() : "null",
305 writeInterfaceClazz.getName());
311 * Read object from database, by using the id field
316 public @Nullable T read(String esId) {
320 String json = db.doReadJsonData(dataTypeName, esId);
323 res = yangtoolsMapper.readValue(json.getBytes(), clazz);
324 } catch (IOException e) {
325 LOG.error("Problem: ", e);
328 LOG.debug("Can not read from DB id {} type {}", esId, dataTypeName);
337 * @param esId to identify the object.
340 public boolean remove(String esId) {
341 return db.doRemove(this.dataTypeName, esId);
344 public int remove(QueryBuilder query) {
345 return this.db.doRemove(this.dataTypeName, query);
349 * Get all elements of related type
351 * @return all Elements
353 public SearchResult<T> doReadAll() {
354 return doReadAll(null);
357 public SearchResult<T> doReadAll(QueryBuilder query) {
358 return this.doReadAll(query, false);
362 * Read all existing objects of a type
364 * @param query for the elements
365 * @return the list of all objects
368 public SearchResult<T> doReadAll(QueryBuilder query, boolean ignoreException) {
370 if(this.doFullsizeRequest) {
371 query.doFullsizeRequest();
373 SearchResult<T> res = new SearchResult<>();
374 SearchResult<SearchHit> result;
375 List<SearchHit> hits;
377 LOG.debug("read data in {} with query {}", dataTypeName, query.toJSON());
378 result = db.doReadByQueryJsonData(dataTypeName, query, ignoreException);
380 result = db.doReadAllJsonData(dataTypeName, ignoreException);
382 hits = result.getHits();
383 LOG.debug("Read: {} elements: {}", dataTypeName, hits.size());
386 for (SearchHit hit : hits) {
387 object = getT(hit.getSourceAsString());
388 LOG.debug("Mapp Object: {}\nSource: '{}'\nResult: '{}'\n", hit.getId(),
389 hit.getSourceAsString(), object);
390 if (object != null) {
391 setEsId(object, hit.getId());
394 LOG.warn("Mapp result null Object: {}\n Source: '{}'\n : '", hit.getId(), hit.getSourceAsString());
397 res.setTotal(result.getTotal());
401 /* ---------------------------------------------
405 private void setEsId(T object, String esId) {
408 field.set(object, esId);
409 } catch (IllegalArgumentException | IllegalAccessException e) {
410 LOG.debug("Field set problem.", e);
415 private @Nullable T getT(String jsonString) {
417 return yangtoolsMapper.readValue(jsonString, clazz);
418 } catch (IOException e) {
419 LOG.info("Mapping problem {}:", clazz.getName(), e);