openecomp-be/lib/openecomp-sdc-notification-lib/openecomp-sdc-notification-core/src/main/java/org/openecomp/sdc/notification/dao/impl/SubscribersDaoCassandraImpl.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.notification.dao.impl;
  22
  23 import com.datastax.driver.mapping.Mapper;
  24 import com.datastax.driver.mapping.Result;
  25 import com.datastax.driver.mapping.annotations.Accessor;
  26 import com.datastax.driver.mapping.annotations.Query;
  27 import com.google.common.collect.Sets;
  28 import org.openecomp.core.dao.impl.CassandraBaseDao;
  29 import org.openecomp.core.nosqldb.api.NoSqlDb;
  30 import org.openecomp.core.nosqldb.factory.NoSqlDbFactory;
  31 import org.openecomp.sdc.notification.dao.SubscribersDao;
  32 import org.openecomp.sdc.notification.dao.types.SubscribersEntity;
  33
  34 import java.util.Collection;
  35 import java.util.Collections;
  36 import java.util.Objects;
  37 import java.util.Set;
  38
  39 import static java.util.Objects.isNull;
  40
  41 public class SubscribersDaoCassandraImpl extends CassandraBaseDao<SubscribersEntity> implements
  42         SubscribersDao {
  43
  44     private static final NoSqlDb noSqlDb = NoSqlDbFactory.getInstance().createInterface();
  45     private static final Mapper<SubscribersEntity> mapper =
  46             noSqlDb.getMappingManager().mapper(SubscribersEntity.class);
  47     private static final SubscribersAccessor accessor =
  48             noSqlDb.getMappingManager().createAccessor(SubscribersAccessor.class);
  49
  50
  51     @Override
  52     protected Object[] getKeys(SubscribersEntity entity) {
  53         return new Object[]{entity.getEntityId()};
  54     }
  55
  56     @Override
  57     protected Mapper<SubscribersEntity> getMapper() {
  58         return mapper;
  59     }
  60
  61     @Override
  62     public void subscribe(String ownerId, String entityId) {
  63         Objects.requireNonNull(ownerId);
  64         Objects.requireNonNull(entityId);
  65         accessor.subscribe(Sets.newHashSet(ownerId), entityId);
  66     }
  67
  68     @Override
  69     @Deprecated
  70     public Collection<SubscribersEntity> list(SubscribersEntity entity) {
  71         throw new UnsupportedOperationException();
  72     }
  73
  74     @Override
  75     public void unsubscribe(String ownerId, String entityId) {
  76         Objects.requireNonNull(ownerId);
  77         Objects.requireNonNull(entityId);
  78         accessor.unsubscribe(Sets.newHashSet(ownerId), entityId);
  79     }
  80
  81     @Override
  82     public Set<String> getSubscribers(String entityId) {
  83         Objects.requireNonNull(entityId);
  84         SubscribersEntity subscribersEntity = accessor.getSubscribers(entityId).one();
  85         if (isNull(subscribersEntity)) {
  86             return Collections.emptySet();
  87         }
  88         return subscribersEntity.getSubscribers();
  89     }
  90
  91     @Accessor
  92     interface SubscribersAccessor {
  93
  94         @Query("select * from notification_subscribers where entity_id=?")
  95         Result<SubscribersEntity> getSubscribers(String entityId);
  96
  97         @Query("update notification_subscribers set subscribers=subscribers+? WHERE entity_id=?")
  98         void subscribe(Set<String> ownerId, String entityId);
  99
 100         @Query("update notification_subscribers set subscribers=subscribers-? WHERE entity_id=?")
 101         void unsubscribe(Set<String> ownerId, String entityId);
 102     }
 103
 104 }