catalog-dao/src/main/java/org/openecomp/sdc/be/dao/cassandra/CassandraClient.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   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
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  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.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.sdc.be.dao.cassandra;
  22
  23 import com.datastax.driver.core.Cluster;
  24 import com.datastax.driver.core.Session;
  25 import com.datastax.driver.core.SocketOptions;
  26 import com.datastax.driver.core.policies.*;
  27 import com.datastax.driver.mapping.Mapper;
  28 import com.datastax.driver.mapping.MappingManager;
  29 import fj.data.Either;
  30 import org.apache.commons.lang3.tuple.ImmutablePair;
  31 import org.openecomp.sdc.be.config.ConfigurationManager;
  32 import org.openecomp.sdc.common.log.wrappers.Logger;
  33 import org.springframework.stereotype.Component;
  34
  35 import javax.annotation.PreDestroy;
  36 import java.util.List;
  37
  38 @Component("cassandra-client")
  39 public class CassandraClient {
  40         private static Logger logger = Logger.getLogger(CassandraClient.class.getName());
  41
  42         private Cluster cluster;
  43         private boolean isConnected;
  44
  45         public CassandraClient() {
  46                 super();
  47                 isConnected = false;
  48                 List<String> cassandraHosts = null;
  49                 try {
  50                         cassandraHosts = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
  51                                         .getCassandraHosts();
  52                         Integer cassandraPort = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
  53                                         .getCassandraPort();
  54                         Long reconnectTimeout = ConfigurationManager.getConfigurationManager().getConfiguration()
  55                                         .getCassandraConfig().getReconnectTimeout();
  56                         logger.debug("creating cluster to hosts:{} port:{} with reconnect timeout:{}", cassandraHosts, cassandraPort, reconnectTimeout);
  57                         Cluster.Builder clusterBuilder = Cluster.builder()
  58                                         .withReconnectionPolicy(new ConstantReconnectionPolicy(reconnectTimeout))
  59                                         .withRetryPolicy(DefaultRetryPolicy.INSTANCE);
  60
  61                         cassandraHosts.forEach(host -> clusterBuilder.addContactPoint(host).withPort(cassandraPort));
  62                         setSocketOptions(clusterBuilder);
  63                         enableAuthentication(clusterBuilder);
  64                         enableSsl(clusterBuilder);
  65                         setLocalDc(clusterBuilder);
  66
  67                         cluster = clusterBuilder.build();
  68                         isConnected = true;
  69                 } catch (Exception e) {
  70                         logger.info("** CassandraClient isn't connected to {}", cassandraHosts);
  71                 }
  72
  73                 logger.info("** CassandraClient created");
  74         }
  75
  76         private void setSocketOptions(Cluster.Builder clusterBuilder) {
  77                 SocketOptions socketOptions =new SocketOptions();
  78                 Integer socketConnectTimeout = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig().getSocketConnectTimeout();
  79                 if( socketConnectTimeout!=null ){
  80                         logger.info("SocketConnectTimeout was provided, setting Cassandra client to use SocketConnectTimeout: {} .",socketConnectTimeout);
  81                         socketOptions.setConnectTimeoutMillis(socketConnectTimeout);
  82                 }
  83                 Integer socketReadTimeout = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig().getSocketReadTimeout();
  84                 if( socketReadTimeout != null ){
  85                         logger.info("SocketReadTimeout was provided, setting Cassandra client to use SocketReadTimeout: {} .",socketReadTimeout);
  86                         socketOptions.setReadTimeoutMillis(socketReadTimeout);
  87                 }
  88                 clusterBuilder.withSocketOptions(socketOptions);
  89         }
  90
  91         private void setLocalDc(Cluster.Builder clusterBuilder) {
  92                 String localDataCenter = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
  93                                 .getLocalDataCenter();
  94                 if (localDataCenter != null) {
  95                         logger.info("localDatacenter was provided, setting Cassndra clint to use datacenter: {} as local.",
  96                                         localDataCenter);
  97                         LoadBalancingPolicy tokenAwarePolicy = new TokenAwarePolicy(
  98                                         DCAwareRoundRobinPolicy.builder().withLocalDc(localDataCenter).build());
  99                         clusterBuilder.withLoadBalancingPolicy(tokenAwarePolicy);
 100                 } else {
 101                         logger.info(
 102                                         "localDatacenter was provided,  the driver will use the datacenter of the first contact point that was reached at initialization");
 103                 }
 104         }
 105
 106         private void enableSsl(Cluster.Builder clusterBuilder) {
 107                 boolean ssl = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig().isSsl();
 108                 if (ssl) {
 109                         String truststorePath = ConfigurationManager.getConfigurationManager().getConfiguration()
 110                                         .getCassandraConfig().getTruststorePath();
 111                         String truststorePassword = ConfigurationManager.getConfigurationManager().getConfiguration()
 112                                         .getCassandraConfig().getTruststorePassword();
 113                         if (truststorePath == null || truststorePassword == null) {
 114                                 logger.error("ssl is enabled but truststorePath or truststorePassword were not supplied.");
 115                         } else {
 116                                 System.setProperty("javax.net.ssl.trustStore", truststorePath);
 117                                 System.setProperty("javax.net.ssl.trustStorePassword", truststorePassword);
 118                                 clusterBuilder.withSSL();
 119                         }
 120
 121                 }
 122         }
 123
 124         private void enableAuthentication(Cluster.Builder clusterBuilder) {
 125                 boolean authenticate = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
 126                                 .isAuthenticate();
 127                 if (authenticate) {
 128                         String username = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
 129                                         .getUsername();
 130                         String password = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
 131                                         .getPassword();
 132                         if (username == null || password == null) {
 133                                 logger.error("authentication is enabled but username or password were not supplied.");
 134                         } else {
 135                                 clusterBuilder.withCredentials(username, password);
 136                         }
 137
 138                 }
 139         }
 140
 141         /**
 142          *
 143          * @param keyspace
 144          *            - key space to connect
 145          * @return
 146          */
 147         public Either<ImmutablePair<Session, MappingManager>, CassandraOperationStatus> connect(String keyspace) {
 148                 if (cluster != null) {
 149                         try {
 150                                 Session session = cluster.connect(keyspace);
 151                                 if (session != null) {
 152                                         MappingManager manager = new MappingManager(session);
 153                                         return Either.left(new ImmutablePair<>(session, manager));
 154                                 } else {
 155                                         return Either.right(CassandraOperationStatus.KEYSPACE_NOT_CONNECTED);
 156                                 }
 157                         } catch (Throwable e) {
 158                                 logger.debug("Failed to connect to keyspace [{}], error :", keyspace, e);
 159                                 return Either.right(CassandraOperationStatus.KEYSPACE_NOT_CONNECTED);
 160                         }
 161                 }
 162                 return Either.right(CassandraOperationStatus.CLUSTER_NOT_CONNECTED);
 163         }
 164
 165         public <T> CassandraOperationStatus save(T entity, Class<T> clazz, MappingManager manager) {
 166                 if (!isConnected) {
 167                         return CassandraOperationStatus.CLUSTER_NOT_CONNECTED;
 168                 }
 169                 try {
 170                         Mapper<T> mapper = manager.mapper(clazz);
 171                         mapper.save(entity);
 172                 } catch (Exception e) {
 173                         logger.debug("Failed to save entity [{}], error :", entity, e);
 174                         return CassandraOperationStatus.GENERAL_ERROR;
 175                 }
 176                 return CassandraOperationStatus.OK;
 177         }
 178
 179         public <T> Either<T, CassandraOperationStatus> getById(String id, Class<T> clazz, MappingManager manager) {
 180                 if (!isConnected) {
 181                         return Either.right(CassandraOperationStatus.CLUSTER_NOT_CONNECTED);
 182                 }
 183                 try {
 184                         Mapper<T> mapper = manager.mapper(clazz);
 185                         T result = mapper.get(id);
 186                         if (result == null) {
 187                                 return Either.right(CassandraOperationStatus.NOT_FOUND);
 188                         }
 189                         return Either.left(result);
 190                 } catch (Exception e) {
 191                         logger.debug("Failed to get by Id [{}], error :", id, e);
 192                         return Either.right(CassandraOperationStatus.GENERAL_ERROR);
 193                 }
 194         }
 195
 196         public <T> CassandraOperationStatus delete(String id, Class<T> clazz, MappingManager manager) {
 197                 if (!isConnected) {
 198                         return CassandraOperationStatus.CLUSTER_NOT_CONNECTED;
 199                 }
 200                 try {
 201                         Mapper<T> mapper = manager.mapper(clazz);
 202                         mapper.delete(id);
 203                 } catch (Exception e) {
 204                         logger.debug("Failed to delete by id [{}], error :", id, e);
 205                         return CassandraOperationStatus.GENERAL_ERROR;
 206                 }
 207                 return CassandraOperationStatus.OK;
 208         }
 209
 210         public boolean isConnected() {
 211                 return isConnected;
 212         }
 213
 214         @PreDestroy
 215         public void closeClient() {
 216                 if (isConnected) {
 217                         cluster.close();
 218                 }
 219                 logger.info("** CassandraClient cluster closed");
 220         }
 221 }