2 * ============LICENSE_START==========================================
4 * ===================================================================
5 * Copyright (c) 2017 AT&T Intellectual Property
6 * ===================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 * ============LICENSE_END=============================================
20 * ====================================================================
22 package org.onap.music.datastore;
24 import java.net.InetAddress;
25 import java.net.NetworkInterface;
26 import java.net.SocketException;
27 import java.util.ArrayList;
28 import java.util.Enumeration;
29 import java.util.HashMap;
30 import java.util.Iterator;
32 import org.onap.music.eelf.logging.EELFLoggerDelegate;
33 import org.onap.music.exceptions.MusicQueryException;
34 import org.onap.music.exceptions.MusicServiceException;
35 import org.onap.music.main.MusicUtil;
36 import com.datastax.driver.core.Cluster;
37 import com.datastax.driver.core.ColumnDefinitions;
38 import com.datastax.driver.core.ColumnDefinitions.Definition;
39 import com.datastax.driver.core.ConsistencyLevel;
40 import com.datastax.driver.core.DataType;
41 import com.datastax.driver.core.KeyspaceMetadata;
42 import com.datastax.driver.core.Metadata;
43 import com.datastax.driver.core.PreparedStatement;
44 import com.datastax.driver.core.ResultSet;
45 import com.datastax.driver.core.Row;
46 import com.datastax.driver.core.Session;
47 import com.datastax.driver.core.TableMetadata;
48 import com.datastax.driver.core.exceptions.AlreadyExistsException;
49 import com.datastax.driver.core.exceptions.NoHostAvailableException;
55 public class MusicDataStore {
57 private Session session;
58 private Cluster cluster;
65 public void setSession(Session session) {
66 this.session = session;
72 public void setCluster(Cluster cluster) {
73 this.cluster = cluster;
78 private EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(MusicDataStore.class);
83 public MusicDataStore() {
84 connectToCassaCluster();
92 public MusicDataStore(Cluster cluster, Session session) {
93 this.session = session;
94 this.cluster = cluster;
100 * @throws MusicServiceException
102 public MusicDataStore(String remoteIp) {
104 connectToCassaCluster(remoteIp);
105 } catch (MusicServiceException e) {
106 logger.error(EELFLoggerDelegate.errorLogger, e.getMessage());
114 private ArrayList<String> getAllPossibleLocalIps() {
115 ArrayList<String> allPossibleIps = new ArrayList<String>();
117 Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
118 while (en.hasMoreElements()) {
119 NetworkInterface ni = (NetworkInterface) en.nextElement();
120 Enumeration<InetAddress> ee = ni.getInetAddresses();
121 while (ee.hasMoreElements()) {
122 InetAddress ia = (InetAddress) ee.nextElement();
123 allPossibleIps.add(ia.getHostAddress());
126 } catch (SocketException e) {
127 logger.error(EELFLoggerDelegate.errorLogger, e.getMessage());
129 return allPossibleIps;
133 * This method iterates through all available IP addresses and connects to multiple cassandra
136 private void connectToCassaCluster() {
137 Iterator<String> it = getAllPossibleLocalIps().iterator();
138 String address = "localhost";
139 logger.info(EELFLoggerDelegate.applicationLogger,
140 "Connecting to cassa cluster: Iterating through possible ips:"
141 + getAllPossibleLocalIps());
142 while (it.hasNext()) {
144 cluster = Cluster.builder().withPort(9042)
145 .withCredentials(MusicUtil.getCassName(), MusicUtil.getCassPwd())
146 .addContactPoint(address).build();
147 Metadata metadata = cluster.getMetadata();
148 logger.info(EELFLoggerDelegate.applicationLogger, "Connected to cassa cluster "
149 + metadata.getClusterName() + " at " + address);
150 session = cluster.connect();
153 } catch (NoHostAvailableException e) {
155 logger.error(EELFLoggerDelegate.errorLogger, e.getMessage());
163 public void close() {
168 * This method connects to cassandra cluster on specific address.
172 private void connectToCassaCluster(String address) throws MusicServiceException {
173 cluster = Cluster.builder().withPort(9042)
174 .withCredentials(MusicUtil.getCassName(), MusicUtil.getCassPwd())
175 .addContactPoint(address).build();
176 Metadata metadata = cluster.getMetadata();
177 logger.info(EELFLoggerDelegate.applicationLogger, "Connected to cassa cluster "
178 + metadata.getClusterName() + " at " + address);
180 session = cluster.connect();
181 } catch (Exception ex) {
182 logger.error(EELFLoggerDelegate.errorLogger, ex.getMessage());
183 throw new MusicServiceException(
184 "Error while connecting to Cassandra cluster.. " + ex.getMessage());
195 public DataType returnColumnDataType(String keyspace, String tableName, String columnName) {
196 KeyspaceMetadata ks = cluster.getMetadata().getKeyspace(keyspace);
197 TableMetadata table = ks.getTable(tableName);
198 return table.getColumn(columnName).getType();
206 * @return TableMetadata
208 public TableMetadata returnColumnMetadata(String keyspace, String tableName) {
209 KeyspaceMetadata ks = cluster.getMetadata().getKeyspace(keyspace);
210 return ks.getTable(tableName);
215 * Utility function to return the Java specific object type.
222 public Object getColValue(Row row, String colName, DataType colType) {
224 switch (colType.getName()) {
226 return row.getString(colName);
228 return row.getUUID(colName);
230 return row.getVarint(colName);
232 return row.getLong(colName);
234 return row.getInt(colName);
236 return row.getFloat(colName);
238 return row.getDouble(colName);
240 return row.getBool(colName);
242 return row.getMap(colName, String.class, String.class);
248 public boolean doesRowSatisfyCondition(Row row, Map<String, Object> condition) {
249 ColumnDefinitions colInfo = row.getColumnDefinitions();
251 for (Map.Entry<String, Object> entry : condition.entrySet()) {
252 String colName = entry.getKey();
253 DataType colType = colInfo.getType(colName);
254 Object columnValue = getColValue(row, colName, colType);
255 Object conditionValue = MusicUtil.convertToActualDataType(colType, entry.getValue());
256 if (columnValue.equals(conditionValue) == false)
263 * Utility function to store ResultSet values in to a MAP for output.
268 public Map<String, HashMap<String, Object>> marshalData(ResultSet results) {
269 Map<String, HashMap<String, Object>> resultMap =
270 new HashMap<String, HashMap<String, Object>>();
272 for (Row row : results) {
273 ColumnDefinitions colInfo = row.getColumnDefinitions();
274 HashMap<String, Object> resultOutput = new HashMap<String, Object>();
275 for (Definition definition : colInfo) {
276 if (!definition.getName().equals("vector_ts"))
277 resultOutput.put(definition.getName(),
278 getColValue(row, definition.getName(), definition.getType()));
280 resultMap.put("row " + counter, resultOutput);
287 // Prepared Statements 1802 additions
289 * This Method performs DDL and DML operations on Cassandra using specified consistency level
291 * @param queryObject Object containing cassandra prepared query and values.
292 * @param consistency Specify consistency level for data synchronization across cassandra
294 * @return Boolean Indicates operation success or failure
295 * @throws MusicServiceException
296 * @throws MusicQueryException
298 public boolean executePut(PreparedQueryObject queryObject, String consistency)
299 throws MusicServiceException, MusicQueryException {
301 boolean result = false;
303 if (!MusicUtil.isValidQueryObject(!queryObject.getValues().isEmpty(), queryObject)) {
304 logger.error(EELFLoggerDelegate.errorLogger,
305 "Error while processing prepared query object");
306 throw new MusicQueryException("Ill formed queryObject for the request = " + "["
307 + queryObject.getQuery() + "]");
309 logger.info(EELFLoggerDelegate.applicationLogger,
310 "In preprared Execute Put: the actual insert query:"
311 + queryObject.getQuery() + "; the values"
312 + queryObject.getValues());
313 PreparedStatement preparedInsert = session.prepare(queryObject.getQuery());
315 if (consistency.equalsIgnoreCase(MusicUtil.CRITICAL)) {
316 logger.info(EELFLoggerDelegate.applicationLogger, "Executing critical put query");
317 preparedInsert.setConsistencyLevel(ConsistencyLevel.QUORUM);
318 } else if (consistency.equalsIgnoreCase(MusicUtil.EVENTUAL)) {
319 logger.info(EELFLoggerDelegate.applicationLogger, "Executing simple put query");
320 preparedInsert.setConsistencyLevel(ConsistencyLevel.ONE);
323 ResultSet rs = session.execute(preparedInsert.bind(queryObject.getValues().toArray()));
324 result = rs.wasApplied();
327 catch (AlreadyExistsException ae) {
328 logger.error(EELFLoggerDelegate.errorLogger, "Executing Session Failure for Request = "
329 + "[" + queryObject.getQuery() + "]" + " Reason = " + ae.getMessage());
331 catch (Exception e) {
332 logger.error(EELFLoggerDelegate.errorLogger, "Executing Session Failure for Request = "
333 + "[" + queryObject.getQuery() + "]" + " Reason = " + e.getMessage());
334 throw new MusicServiceException("Executing Session Failure for Request = " + "["
335 + queryObject.getQuery() + "]" + " Reason = " + e.getMessage());
343 * This method performs DDL operations on Cassandra using consistency level ONE.
345 * @param queryObject Object containing cassandra prepared query and values.
347 * @throws MusicServiceException
348 * @throws MusicQueryException
350 public ResultSet executeEventualGet(PreparedQueryObject queryObject)
351 throws MusicServiceException, MusicQueryException {
353 if (!MusicUtil.isValidQueryObject(!queryObject.getValues().isEmpty(), queryObject)) {
354 throw new MusicQueryException("Ill formed queryObject for the request = " + "["
355 + queryObject.getQuery() + "]");
357 logger.info(EELFLoggerDelegate.applicationLogger,
358 "Executing Eventual get query:" + queryObject.getQuery());
359 PreparedStatement preparedEventualGet = session.prepare(queryObject.getQuery());
360 preparedEventualGet.setConsistencyLevel(ConsistencyLevel.ONE);
361 ResultSet results = null;
363 results = session.execute(preparedEventualGet.bind(queryObject.getValues().toArray()));
365 } catch (Exception ex) {
366 logger.error(EELFLoggerDelegate.errorLogger, ex.getMessage());
367 throw new MusicServiceException(ex.getMessage());
374 * This method performs DDL operation on Cassandra using consistency level QUORUM.
376 * @param queryObject Object containing cassandra prepared query and values.
378 * @throws MusicServiceException
379 * @throws MusicQueryException
381 public ResultSet executeCriticalGet(PreparedQueryObject queryObject)
382 throws MusicServiceException, MusicQueryException {
383 if (!MusicUtil.isValidQueryObject(!queryObject.getValues().isEmpty(), queryObject)) {
384 logger.error(EELFLoggerDelegate.errorLogger, "Error processing Prepared Query Object");
385 throw new MusicQueryException("Ill formed queryObject for the request = " + "["
386 + queryObject.getQuery() + "]");
388 logger.info(EELFLoggerDelegate.applicationLogger,
389 "Executing Critical get query:" + queryObject.getQuery());
390 PreparedStatement preparedEventualGet = session.prepare(queryObject.getQuery());
391 preparedEventualGet.setConsistencyLevel(ConsistencyLevel.QUORUM);
392 ResultSet results = null;
394 results = session.execute(preparedEventualGet.bind(queryObject.getValues().toArray()));
395 } catch (Exception ex) {
396 logger.error(EELFLoggerDelegate.errorLogger, ex.getMessage());
397 throw new MusicServiceException(ex.getMessage());