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.util.List;
28 import javax.annotation.Nonnull;
29 import javax.annotation.Nullable;
30 import org.eclipse.jdt.annotation.NonNull;
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.concepts.Builder;
39 import org.opendaylight.yangtools.yang.binding.DataObject;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
44 * Class to rw yang-tool generated objects into elasticsearch database. For "ES _id" exchange the esIdAddAtributteName
45 * is used. This attribute mast be of type String and contains for read and write operations the object id. The function
46 * can be used without id handling. If id handling is required the parameter needs to be specified by class definition
47 * in yang and setting the name by using setAttributeName()
49 * Due to using Jackson base interfaces the org.eclipse.jdt.annotation.NonNull needs to be used here to get rid of
52 * @param <T> Yang tools generated class object.
54 public class EsDataObjectReaderWriter2<T extends DataObject> {
56 private static final Logger LOG = LoggerFactory.getLogger(EsDataObjectReaderWriter2.class);
58 /** Typename for elastic search data schema **/
59 private String dataTypeName;
61 /** Elasticsearch Database client to be used **/
62 private DatabaseClient db;
64 /** Mapper with configuration to use opendaylight yang-tools builder pattern for object creation **/
65 private YangToolsMapper2<T> yangtoolsMapper;
67 /** Class of T as attribute to allow JSON to Class object mapping **/
68 private Class<T> clazz;
70 /** Field is used to write id. If null no id handling **/
71 private @Nullable Field field;
73 /** Attribute that is used as id field for the database object **/
74 private @Nullable String esIdAddAtributteName;
76 /** Interface to be used for write operations. Rule for write: T extends S and **/
77 private Class<? extends DataObject> writeInterfaceClazz; // == "S"
78 /** Flag true to sync this attribute during write always, what is slow and false do not sync */
79 private final boolean syncAfterWrite;
81 protected boolean doFullsizeRequest;
84 * Elasticsearch database read and write for specific class, defined by opendaylight yang-tools.
88 * @param db Database access client
89 * @param dataTypeName typename in database schema
90 * @param clazz class of type to be handled
91 * @param builderClazz class to build related object if builder pattern should be used.
92 * @param syncAfterWrite
93 * @throws ClassNotFoundException
95 public <X extends T, @NonNull B extends Builder<X>> EsDataObjectReaderWriter2(DatabaseClient db,
96 String dataTypeName, @Nonnull Class<T> clazz, @Nullable Class<B> builderClazz, boolean syncAfterWrite)
97 throws ClassNotFoundException {
98 LOG.info("Create {} for datatype {} class {}", this.getClass().getName(), dataTypeName, clazz.getName());
100 this.esIdAddAtributteName = null;
102 this.writeInterfaceClazz = clazz;
104 this.dataTypeName = dataTypeName;
105 this.yangtoolsMapper = new YangToolsMapper2<>(clazz, builderClazz);
107 this.syncAfterWrite = syncAfterWrite;
108 this.doFullsizeRequest = false;
111 public void setFullsizeRequest(boolean fullsizeRequest) {
112 this.doFullsizeRequest = fullsizeRequest;
114 public <X extends T, @NonNull B extends Builder<X>> EsDataObjectReaderWriter2(DatabaseClient db,
115 Entity dataTypeName, @Nonnull Class<T> clazz, @Nullable Class<B> builderClazz)
116 throws ClassNotFoundException {
117 this(db, dataTypeName.getName(), clazz, builderClazz, false);
120 public <X extends T, @NonNull B extends Builder<X>> EsDataObjectReaderWriter2(DatabaseClient db,
121 Entity dataTypeName, @Nonnull Class<T> clazz, @Nullable Class<B> builderClazz, boolean syncAfterWrite)
122 throws ClassNotFoundException {
123 this(db, dataTypeName.getName(), clazz, builderClazz, syncAfterWrite);
126 public EsDataObjectReaderWriter2(DatabaseClient db, Entity dataTypeName, @Nonnull Class<T> clazz,
127 boolean syncAfterWrite) throws ClassNotFoundException {
128 this(db, dataTypeName.getName(), clazz, null, syncAfterWrite);
131 public EsDataObjectReaderWriter2(DatabaseClient db, Entity dataTypeName, Class<T> clazz)
132 throws ClassNotFoundException {
133 this(db, dataTypeName.getName(), clazz, null, false);
139 * @return string with dataTypeName
141 public String getDataTypeName() {
146 * Simlar to {@link #setEsIdAttributeName()}, but adapts the parameter to yangtools attribute naming schema
148 * @param esIdAttributeName is converted to UnderscoreCamelCase
149 * @return this for further operations.
151 public EsDataObjectReaderWriter2<T> setEsIdAttributeNameCamelized(String esIdAttributeName) {
152 return setEsIdAttributeName(YangToolsMapperHelper.toCamelCaseAttributeName(esIdAttributeName));
156 * Attribute name of class that is containing the object id
158 * @param esIdAttributeName of the implementation class for the yangtools interface. Expected attribute name format
159 * is CamelCase with leading underline. @
160 * @return this for further operations.
161 * @throws SecurityException if no access or IllegalArgumentException if wrong type or no attribute with this name.
163 public EsDataObjectReaderWriter2<T> setEsIdAttributeName(String esIdAttributeName) {
164 LOG.debug("Set attribute '{}'", esIdAttributeName);
165 this.esIdAddAtributteName = null; // Reset status
168 Field attributeField;
170 Builder<? extends T> builder = yangtoolsMapper.getBuilder(clazz);
171 if (builder == null) {
172 String msg = "No builder for " + clazz;
174 throw new IllegalArgumentException(msg);
176 T object = builder.build();
177 attributeField = object.getClass().getDeclaredField(esIdAttributeName);
178 if (attributeField.getType().equals(String.class)) {
179 attributeField.setAccessible(true);
180 this.esIdAddAtributteName = esIdAttributeName; // Set new status if everything OK
181 this.field = attributeField;
183 String msg = "Wrong field type " + attributeField.getType().getName() + " of " + esIdAttributeName;
185 throw new IllegalArgumentException(msg);
188 } catch (NoSuchFieldException e) {
189 // Convert to run-time exception
190 String msg = "NoSuchFieldException for '" + esIdAttributeName + "' in class " + clazz.getName();
192 throw new IllegalArgumentException(msg);
193 } catch (SecurityException e) {
194 LOG.debug("Access problem " + esIdAttributeName, e);
201 * Specify subclass of T for write operations.
203 * @param writeInterfaceClazz
205 public EsDataObjectReaderWriter2<T> setWriteInterface(Class<? extends DataObject> writeInterfaceClazz) {
206 LOG.debug("Set write interface to {}", writeInterfaceClazz);
207 if (writeInterfaceClazz == null) {
208 throw new IllegalArgumentException("Null not allowed here.");
211 this.writeInterfaceClazz = writeInterfaceClazz;
215 public interface IdGetter<S extends DataObject> {
216 String getId(S object);
219 public <S extends DataObject> void write(List<S> objectList, IdGetter<S> idGetter) {
220 for (S object : objectList) {
221 write(object, idGetter.getId(object));
226 * Write child object to database with specific id
228 * @param object to be written
229 * @param esId use the id or if null generate unique id
230 * @return String with id or null
232 public @Nullable <S extends DataObject> String write(S object, @Nullable String esId) {
233 if (object != null && writeInterfaceClazz.isInstance(object)) {
235 String json = yangtoolsMapper.writeValueAsString(object);
236 return db.doWriteRaw(dataTypeName, esId, json, this.syncAfterWrite);
237 } catch (JsonProcessingException e) {
238 LOG.error("Write problem: ", e);
241 LOG.error("Type {} does not provide interface {}", object != null ? object.getClass().getName() : "null",
242 writeInterfaceClazz.getName());
248 * Update partial child object to database with match/term query
250 * @param <S> of object
251 * @param object to write
252 * @param query for write of specific attributes
253 * @return json string with new Object
255 public @Nullable <S extends DataObject> boolean update(S object, QueryBuilder query) {
256 if (object != null && writeInterfaceClazz.isInstance(object)) {
258 String json = yangtoolsMapper.writeValueAsString(object);
259 return db.doUpdate(this.dataTypeName, json, query);
260 } catch (JsonProcessingException e) {
261 LOG.error("Update problem: ", e);
264 LOG.error("Type {} does not provide interface {}", object != null ? object.getClass().getName() : "null",
265 writeInterfaceClazz.getName());
271 * Write/ update partial child object to database with specific id Write if not exists, else update
275 * @return String with esId or null
277 public @Nullable <S extends DataObject> String update(S object, String esId) {
278 return this.updateOrCreate(object, esId, null);
282 * See {@link doUpdateOrCreate(String dataTypeName, String esId, String json, List<String> doNotUpdateField) }
284 public @Nullable <S extends DataObject> String updateOrCreate(S object, String esId, List<String> onlyForInsert) {
285 if (object != null && writeInterfaceClazz.isInstance(object)) {
287 String json = yangtoolsMapper.writeValueAsString(object);
288 return db.doUpdateOrCreate(dataTypeName, esId, json, onlyForInsert);
289 } catch (JsonProcessingException e) {
290 LOG.error("Update problem: ", e);
293 LOG.error("Type {} does not provide interface {}", object != null ? object.getClass().getName() : "null",
294 writeInterfaceClazz.getName());
300 * Read object from database, by using the id field
305 public @Nullable T read(String esId) {
309 String json = db.doReadJsonData(dataTypeName, esId);
312 res = yangtoolsMapper.readValue(json.getBytes(), clazz);
313 } catch (IOException e) {
314 LOG.error("Problem: ", e);
317 LOG.debug("Can not read from DB id {} type {}", esId, dataTypeName);
326 * @param esId to identify the object.
329 public boolean remove(String esId) {
330 return db.doRemove(this.dataTypeName, esId);
333 public int remove(QueryBuilder query) {
334 return this.db.doRemove(this.dataTypeName, query);
338 * Get all elements of related type
340 * @return all Elements
342 public SearchResult<T> doReadAll() {
343 return doReadAll(null);
346 public SearchResult<T> doReadAll(QueryBuilder query) {
347 return this.doReadAll(query, false);
351 * Read all existing objects of a type
353 * @param query for the elements
354 * @return the list of all objects
357 public SearchResult<T> doReadAll(QueryBuilder query, boolean ignoreException) {
359 if(this.doFullsizeRequest) {
360 query.doFullsizeRequest();
362 SearchResult<T> res = new SearchResult<>();
363 SearchResult<SearchHit> result;
364 List<SearchHit> hits;
366 LOG.debug("read data in {} with query {}", dataTypeName, query.toJSON());
367 result = db.doReadByQueryJsonData(dataTypeName, query, ignoreException);
369 result = db.doReadAllJsonData(dataTypeName, ignoreException);
371 hits = result.getHits();
372 LOG.debug("Read: {} elements: {}", dataTypeName, hits.size());
375 for (SearchHit hit : hits) {
376 object = getT(hit.getSourceAsString());
377 LOG.debug("Mapp Object: {}\nSource: '{}'\nResult: '{}'\n", hit.getId(),
378 hit.getSourceAsString(), object);
379 if (object != null) {
380 setEsId(object, hit.getId());
383 LOG.warn("Mapp result null Object: {}\n Source: '{}'\n : '", hit.getId(), hit.getSourceAsString());
386 res.setTotal(result.getTotal());
390 /* ---------------------------------------------
394 private void setEsId(T object, String esId) {
397 field.set(object, esId);
398 } catch (IllegalArgumentException | IllegalAccessException e) {
399 LOG.debug("Field set problem.", e);
404 private @Nullable T getT(String jsonString) {
406 return yangtoolsMapper.readValue(jsonString, clazz);
407 } catch (IOException e) {
408 LOG.info("Mapping problem {}:", clazz.getName(), e);