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 java.util.List;
  24
  25 import javax.annotation.PreDestroy;
  26
  27 import com.datastax.driver.core.SocketOptions;
  28 import org.apache.commons.lang3.tuple.ImmutablePair;
  29 import org.openecomp.sdc.be.config.ConfigurationManager;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32 import org.springframework.stereotype.Component;
  33
  34 import com.datastax.driver.core.Cluster;
  35 import com.datastax.driver.core.Session;
  36 import com.datastax.driver.core.policies.ConstantReconnectionPolicy;
  37 import com.datastax.driver.core.policies.DCAwareRoundRobinPolicy;
  38 import com.datastax.driver.core.policies.DefaultRetryPolicy;
  39 import com.datastax.driver.core.policies.LoadBalancingPolicy;
  40 import com.datastax.driver.core.policies.TokenAwarePolicy;
  41 import com.datastax.driver.mapping.Mapper;
  42 import com.datastax.driver.mapping.MappingManager;
  43
  44 import fj.data.Either;
  45
  46 @Component("cassandra-client")
  47 public class CassandraClient {
  48         private static Logger logger = LoggerFactory.getLogger(CassandraClient.class.getName());
  49
  50         private Cluster cluster;
  51         private boolean isConnected;
  52
  53         public CassandraClient() {
  54                 super();
  55                 isConnected = false;
  56                 List<String> cassandraHosts = null;
  57                 try {
  58                         cassandraHosts = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
  59                                         .getCassandraHosts();
  60                         Long reconnectTimeout = ConfigurationManager.getConfigurationManager().getConfiguration()
  61                                         .getCassandraConfig().getReconnectTimeout();
  62
  63                         logger.debug("creating cluster to hosts:{} with reconnect timeout:{}", cassandraHosts, reconnectTimeout);
  64                         Cluster.Builder clusterBuilder = Cluster.builder()
  65                                         .withReconnectionPolicy(new ConstantReconnectionPolicy(reconnectTimeout))
  66                                         .withRetryPolicy(DefaultRetryPolicy.INSTANCE);
  67
  68                         cassandraHosts.forEach(host -> clusterBuilder.addContactPoint(host));
  69                         setSocketOptions(clusterBuilder);
  70                         enableAuthentication(clusterBuilder);
  71                         enableSsl(clusterBuilder);
  72                         setLocalDc(clusterBuilder);
  73
  74                         cluster = clusterBuilder.build();
  75                         isConnected = true;
  76                 } catch (Exception e) {
  77                         logger.info("** CassandraClient isn't connected to {}", cassandraHosts);
  78                 }
  79
  80                 logger.info("** CassandraClient created");
  81         }
  82
  83         private void setSocketOptions(Cluster.Builder clusterBuilder) {
  84                 SocketOptions socketOptions =new SocketOptions();
  85                 Integer socketConnectTimeout = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig().getSocketConnectTimeout();
  86                 if( socketConnectTimeout!=null ){
  87                         logger.info("SocketConnectTimeout was provided, setting Cassandra client to use SocketConnectTimeout: {} .",socketConnectTimeout);
  88                         socketOptions.setConnectTimeoutMillis(socketConnectTimeout);
  89                 }
  90                 Integer socketReadTimeout = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig().getSocketReadTimeout();
  91                 if( socketReadTimeout != null ){
  92                         logger.info("SocketReadTimeout was provided, setting Cassandra client to use SocketReadTimeout: {} .",socketReadTimeout);
  93                         socketOptions.setReadTimeoutMillis(socketReadTimeout);
  94                 }
  95                 clusterBuilder.withSocketOptions(socketOptions);
  96         }
  97
  98         private void setLocalDc(Cluster.Builder clusterBuilder) {
  99                 String localDataCenter = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
 100                                 .getLocalDataCenter();
 101                 if (localDataCenter != null) {
 102                         logger.info("localDatacenter was provided, setting Cassndra clint to use datacenter: {} as local.",
 103                                         localDataCenter);
 104                         LoadBalancingPolicy tokenAwarePolicy = new TokenAwarePolicy(
 105                                         DCAwareRoundRobinPolicy.builder().withLocalDc(localDataCenter).build());
 106                         clusterBuilder.withLoadBalancingPolicy(tokenAwarePolicy);
 107                 } else {
 108                         logger.info(
 109                                         "localDatacenter was provided,  the driver will use the datacenter of the first contact point that was reached at initialization");
 110                 }
 111         }
 112
 113         private void enableSsl(Cluster.Builder clusterBuilder) {
 114                 boolean ssl = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig().isSsl();
 115                 if (ssl) {
 116                         String truststorePath = ConfigurationManager.getConfigurationManager().getConfiguration()
 117                                         .getCassandraConfig().getTruststorePath();
 118                         String truststorePassword = ConfigurationManager.getConfigurationManager().getConfiguration()
 119                                         .getCassandraConfig().getTruststorePassword();
 120                         if (truststorePath == null || truststorePassword == null) {
 121                                 logger.error("ssl is enabled but truststorePath or truststorePassword were not supplied.");
 122                         } else {
 123                                 System.setProperty("javax.net.ssl.trustStore", truststorePath);
 124                                 System.setProperty("javax.net.ssl.trustStorePassword", truststorePassword);
 125                                 clusterBuilder.withSSL();
 126                         }
 127
 128                 }
 129         }
 130
 131         private void enableAuthentication(Cluster.Builder clusterBuilder) {
 132                 boolean authenticate = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
 133                                 .isAuthenticate();
 134                 if (authenticate) {
 135                         String username = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
 136                                         .getUsername();
 137                         String password = ConfigurationManager.getConfigurationManager().getConfiguration().getCassandraConfig()
 138                                         .getPassword();
 139                         if (username == null || password == null) {
 140                                 logger.error("authentication is enabled but username or password were not supplied.");
 141                         } else {
 142                                 clusterBuilder.withCredentials(username, password);
 143                         }
 144
 145                 }
 146         }
 147
 148         /**
 149          *
 150          * @param keyspace
 151          *            - key space to connect
 152          * @return
 153          */
 154         public Either<ImmutablePair<Session, MappingManager>, CassandraOperationStatus> connect(String keyspace) {
 155                 if (cluster != null) {
 156                         try {
 157                                 Session session = cluster.connect(keyspace);
 158                                 if (session != null) {
 159                                         MappingManager manager = new MappingManager(session);
 160                                         return Either.left(new ImmutablePair<Session, MappingManager>(session, manager));
 161                                 } else {
 162                                         return Either.right(CassandraOperationStatus.KEYSPACE_NOT_CONNECTED);
 163                                 }
 164                         } catch (Throwable e) {
 165                                 logger.debug("Failed to connect to keyspace [{}], error :", keyspace, e);
 166                                 return Either.right(CassandraOperationStatus.KEYSPACE_NOT_CONNECTED);
 167                         }
 168                 }
 169                 return Either.right(CassandraOperationStatus.CLUSTER_NOT_CONNECTED);
 170         }
 171
 172         public <T> CassandraOperationStatus save(T entity, Class<T> clazz, MappingManager manager) {
 173                 if (!isConnected) {
 174                         return CassandraOperationStatus.CLUSTER_NOT_CONNECTED;
 175                 }
 176                 try {
 177                         Mapper<T> mapper = manager.mapper(clazz);
 178                         mapper.save(entity);
 179                 } catch (Exception e) {
 180                         logger.debug("Failed to save entity [{}], error :", entity, e);
 181                         return CassandraOperationStatus.GENERAL_ERROR;
 182                 }
 183                 return CassandraOperationStatus.OK;
 184         }
 185
 186         public <T> Either<T, CassandraOperationStatus> getById(String id, Class<T> clazz, MappingManager manager) {
 187                 if (!isConnected) {
 188                         return Either.right(CassandraOperationStatus.CLUSTER_NOT_CONNECTED);
 189                 }
 190                 try {
 191                         Mapper<T> mapper = manager.mapper(clazz);
 192                         T result = mapper.get(id);
 193                         if (result == null) {
 194                                 return Either.right(CassandraOperationStatus.NOT_FOUND);
 195                         }
 196                         return Either.left(result);
 197                 } catch (Exception e) {
 198                         logger.debug("Failed to get by Id [{}], error :", id, e);
 199                         return Either.right(CassandraOperationStatus.GENERAL_ERROR);
 200                 }
 201         }
 202
 203         public <T> CassandraOperationStatus delete(String id, Class<T> clazz, MappingManager manager) {
 204                 if (!isConnected) {
 205                         return CassandraOperationStatus.CLUSTER_NOT_CONNECTED;
 206                 }
 207                 try {
 208                         Mapper<T> mapper = manager.mapper(clazz);
 209                         mapper.delete(id);
 210                 } catch (Exception e) {
 211                         logger.debug("Failed to delete by id [{}], error :", id, e);
 212                         return CassandraOperationStatus.GENERAL_ERROR;
 213                 }
 214                 return CassandraOperationStatus.OK;
 215         }
 216
 217         public boolean isConnected() {
 218                 return isConnected;
 219         }
 220
 221         @PreDestroy
 222         public void closeClient() {
 223                 if (isConnected) {
 224                         cluster.close();
 225                 }
 226                 logger.info("** CassandraClient cluster closed");
 227         }
 228 }