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   1 /**
   2  * Copyright (c) 2010-2020 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.persistence.influxdb;
  14
  15 import java.time.ZoneId;
  16 import java.time.ZonedDateTime;
  17 import java.util.Collections;
  18 import java.util.List;
  19 import java.util.Locale;
  20 import java.util.Map;
  21 import java.util.Set;
  22 import java.util.stream.Collectors;
  23
  24 import org.eclipse.jdt.annotation.NonNullByDefault;
  25 import org.eclipse.jdt.annotation.Nullable;
  26 import org.openhab.core.config.core.ConfigurableService;
  27 import org.openhab.core.items.Item;
  28 import org.openhab.core.items.ItemRegistry;
  29 import org.openhab.core.items.MetadataRegistry;
  30 import org.openhab.core.persistence.FilterCriteria;
  31 import org.openhab.core.persistence.HistoricItem;
  32 import org.openhab.core.persistence.PersistenceItemInfo;
  33 import org.openhab.core.persistence.PersistenceService;
  34 import org.openhab.core.persistence.QueryablePersistenceService;
  35 import org.openhab.core.persistence.strategy.PersistenceStrategy;
  36 import org.openhab.core.types.State;
  37 import org.openhab.persistence.influxdb.internal.FilterCriteriaQueryCreator;
  38 import org.openhab.persistence.influxdb.internal.InfluxDBConfiguration;
  39 import org.openhab.persistence.influxdb.internal.InfluxDBHistoricItem;
  40 import org.openhab.persistence.influxdb.internal.InfluxDBPersistentItemInfo;
  41 import org.openhab.persistence.influxdb.internal.InfluxDBRepository;
  42 import org.openhab.persistence.influxdb.internal.InfluxDBStateConvertUtils;
  43 import org.openhab.persistence.influxdb.internal.InfluxPoint;
  44 import org.openhab.persistence.influxdb.internal.InfluxRow;
  45 import org.openhab.persistence.influxdb.internal.ItemToStorePointCreator;
  46 import org.openhab.persistence.influxdb.internal.RepositoryFactory;
  47 import org.osgi.framework.Constants;
  48 import org.osgi.service.component.annotations.Activate;
  49 import org.osgi.service.component.annotations.Component;
  50 import org.osgi.service.component.annotations.Deactivate;
  51 import org.osgi.service.component.annotations.Modified;
  52 import org.osgi.service.component.annotations.Reference;
  53 import org.slf4j.Logger;
  54 import org.slf4j.LoggerFactory;
  55
  56 /**
  57  * This is the implementation of the InfluxDB {@link PersistenceService}. It persists item values
  58  * using the <a href="http://influxdb.org">InfluxDB time series database. The states (
  59  * {@link State}) of an {@link Item} are persisted by default in a time series with names equal to the name of
  60  * the item.
  61  *
  62  * This addon supports 1.X and 2.X versions, as two versions are incompatible and use different drivers the
  63  * specific code for each version is accessed by {@link InfluxDBRepository} and {@link FilterCriteriaQueryCreator}
  64  * interfaces and specific implementation reside in {@link org.openhab.persistence.influxdb.internal.influx1} and
  65  * {@link org.openhab.persistence.influxdb.internal.influx2} packages
  66  *
  67  * @author Theo Weiss - Initial contribution, rewrite of org.openhab.persistence.influxdb
  68  * @author Joan Pujol Espinar - Addon rewrite refactoring code and adding support for InfluxDB 2.0. Some tag code is
  69  *         based
  70  *         from not integrated branch from Dominik Vorreiter
  71  */
  72 @NonNullByDefault
  73 @Component(service = { PersistenceService.class,
  74         QueryablePersistenceService.class }, configurationPid = "org.openhab.influxdb", //
  75         property = Constants.SERVICE_PID + "=org.openhab.influxdb")
  76 @ConfigurableService(category = "persistence", label = "InfluxDB Persistence Service", description_uri = InfluxDBPersistenceService.CONFIG_URI)
  77 public class InfluxDBPersistenceService implements QueryablePersistenceService {
  78     public static final String SERVICE_NAME = "influxdb";
  79
  80     private final Logger logger = LoggerFactory.getLogger(InfluxDBPersistenceService.class);
  81
  82     protected static final String CONFIG_URI = "persistence:influxdb";
  83
  84     // External dependencies
  85     private final ItemRegistry itemRegistry;
  86     private final MetadataRegistry metadataRegistry;
  87
  88     // Internal dependencies/state
  89     private InfluxDBConfiguration configuration = InfluxDBConfiguration.NO_CONFIGURATION;
  90
  91     // Relax rules because can only be null if component is not active
  92     private @NonNullByDefault({}) ItemToStorePointCreator itemToStorePointCreator;
  93     private @NonNullByDefault({}) InfluxDBRepository influxDBRepository;
  94
  95     @Activate
  96     public InfluxDBPersistenceService(final @Reference ItemRegistry itemRegistry,
  97             final @Reference MetadataRegistry metadataRegistry) {
  98         this.itemRegistry = itemRegistry;
  99         this.metadataRegistry = metadataRegistry;
 100     }
 101
 102     /**
 103      * Connect to database when service is activated
 104      */
 105     @Activate
 106     public void activate(final @Nullable Map<String, @Nullable Object> config) {
 107         logger.debug("InfluxDB persistence service is being activated");
 108
 109         if (loadConfiguration(config)) {
 110             itemToStorePointCreator = new ItemToStorePointCreator(configuration, metadataRegistry);
 111             influxDBRepository = createInfluxDBRepository();
 112             influxDBRepository.connect();
 113         } else {
 114             logger.error("Cannot load configuration, persistence service wont work");
 115         }
 116
 117         logger.debug("InfluxDB persistence service is now activated");
 118     }
 119
 120     // Visible for testing
 121     protected InfluxDBRepository createInfluxDBRepository() {
 122         return RepositoryFactory.createRepository(configuration);
 123     }
 124
 125     /**
 126      * Disconnect from database when service is deactivated
 127      */
 128     @Deactivate
 129     public void deactivate() {
 130         logger.debug("InfluxDB persistence service deactivated");
 131         if (influxDBRepository != null) {
 132             influxDBRepository.disconnect();
 133             influxDBRepository = null;
 134         }
 135         if (itemToStorePointCreator != null) {
 136             itemToStorePointCreator = null;
 137         }
 138     }
 139
 140     /**
 141      * Rerun deactivation/activation code each time configuration is changed
 142      */
 143     @Modified
 144     protected void modified(@Nullable Map<String, @Nullable Object> config) {
 145         if (config != null) {
 146             logger.debug("Config has been modified will deactivate/activate with new config");
 147
 148             deactivate();
 149             activate(config);
 150         } else {
 151             logger.warn("Null configuration, ignoring");
 152         }
 153     }
 154
 155     private boolean loadConfiguration(@Nullable Map<String, @Nullable Object> config) {
 156         boolean configurationIsValid;
 157         if (config != null) {
 158             configuration = new InfluxDBConfiguration(config);
 159             configurationIsValid = configuration.isValid();
 160             if (configurationIsValid) {
 161                 logger.debug("Loaded configuration {}", config);
 162             } else {
 163                 logger.warn("Some configuration properties are not valid {}", config);
 164             }
 165         } else {
 166             configuration = InfluxDBConfiguration.NO_CONFIGURATION;
 167             configurationIsValid = false;
 168             logger.warn("Ignoring configuration because it's null");
 169         }
 170         return configurationIsValid;
 171     }
 172
 173     @Override
 174     public String getId() {
 175         return SERVICE_NAME;
 176     }
 177
 178     @Override
 179     public String getLabel(@Nullable Locale locale) {
 180         return "InfluxDB persistence layer";
 181     }
 182
 183     @Override
 184     public Set<PersistenceItemInfo> getItemInfo() {
 185         if (influxDBRepository != null && influxDBRepository.isConnected()) {
 186             return influxDBRepository.getStoredItemsCount().entrySet().stream()
 187                     .map(entry -> new InfluxDBPersistentItemInfo(entry.getKey(), entry.getValue()))
 188                     .collect(Collectors.toUnmodifiableSet());
 189         } else {
 190             logger.info("getItemInfo ignored, InfluxDB is not yet connected");
 191             return Collections.emptySet();
 192         }
 193     }
 194
 195     @Override
 196     public void store(Item item) {
 197         store(item, item.getName());
 198     }
 199
 200     @Override
 201     public void store(Item item, @Nullable String alias) {
 202         if (influxDBRepository != null && influxDBRepository.isConnected()) {
 203             InfluxPoint point = itemToStorePointCreator.convert(item, alias);
 204             if (point != null) {
 205                 logger.trace("Storing item {} in InfluxDB point {}", item, point);
 206                 influxDBRepository.write(point);
 207             } else {
 208                 logger.trace("Ignoring item {} as is cannot be converted to a InfluxDB point", item);
 209             }
 210         } else {
 211             logger.debug("store ignored, InfluxDB is not yet connected");
 212         }
 213     }
 214
 215     @Override
 216     public Iterable<HistoricItem> query(FilterCriteria filter) {
 217         logger.debug("Got a query for historic points!");
 218
 219         if (influxDBRepository != null && influxDBRepository.isConnected()) {
 220             logger.trace(
 221                     "Filter: itemname: {}, ordering: {}, state: {},  operator: {}, getBeginDate: {}, getEndDate: {}, getPageSize: {}, getPageNumber: {}",
 222                     filter.getItemName(), filter.getOrdering().toString(), filter.getState(), filter.getOperator(),
 223                     filter.getBeginDate(), filter.getEndDate(), filter.getPageSize(), filter.getPageNumber());
 224
 225             String query = RepositoryFactory.createQueryCreator(configuration).createQuery(filter,
 226                     configuration.getRetentionPolicy());
 227             logger.trace("Query {}", query);
 228             List<InfluxRow> results = influxDBRepository.query(query);
 229             return results.stream().map(this::mapRow2HistoricItem).collect(Collectors.toList());
 230         } else {
 231             logger.debug("query ignored, InfluxDB is not yet connected");
 232             return Collections.emptyList();
 233         }
 234     }
 235
 236     private HistoricItem mapRow2HistoricItem(InfluxRow row) {
 237         State state = InfluxDBStateConvertUtils.objectToState(row.getValue(), row.getItemName(), itemRegistry);
 238         return new InfluxDBHistoricItem(row.getItemName(), state,
 239                 ZonedDateTime.ofInstant(row.getTime(), ZoneId.systemDefault()));
 240     }
 241
 242     @Override
 243     public List<PersistenceStrategy> getDefaultStrategies() {
 244         return List.of(PersistenceStrategy.Globals.RESTORE, PersistenceStrategy.Globals.CHANGE);
 245     }
 246 }