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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.binding.amazonechocontrol.internal.smarthome;
  14
  15 import java.util.Date;
  16 import java.util.HashMap;
  17 import java.util.HashSet;
  18 import java.util.List;
  19 import java.util.Map;
  20 import java.util.Set;
  21
  22 import org.eclipse.jdt.annotation.NonNullByDefault;
  23 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonSmartHomeCapabilities.SmartHomeCapability;
  24 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonSmartHomeDevices.DriverIdentity;
  25 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonSmartHomeDevices.SmartHomeDevice;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 /**
  30  * Handles the update interval calculation
  31  *
  32  * @author Michael Geramb - Initial contribution
  33  */
  34 @NonNullByDefault
  35 public class SmartHomeDeviceStateGroupUpdateCalculator {
  36     private final Logger logger = LoggerFactory.getLogger(SmartHomeDeviceStateGroupUpdateCalculator.class);
  37
  38     private static final Integer UPDATE_INTERVAL_PRIVATE_SKILLS_IN_SECONDS = 10;
  39     private static final Integer UPDATE_INTERVAL_PRIVATE_SKILLS_IN_SECONDS_TRACE = 600;
  40     private static final Integer UPDATE_INTERVAL_ACOUSTIC_EVENTS_IN_SECONDS = 10;
  41     private Integer updateIntervalAmazonInSeconds;
  42     private Integer updateIntervalSkillsInSeconds;
  43
  44     private static class UpdateGroup {
  45         private final int intervalInSeconds;
  46         private Date lastUpdated;
  47
  48         public UpdateGroup(int intervalInSeconds) {
  49             this.intervalInSeconds = intervalInSeconds;
  50             this.lastUpdated = new Date(0);
  51         }
  52     }
  53
  54     private final Map<Integer, UpdateGroup> updateGroups = new HashMap<>();
  55
  56     public SmartHomeDeviceStateGroupUpdateCalculator(int updateIntervalAmazonInSeconds,
  57             int updateIntervalSkillsInSeconds) {
  58         this.updateIntervalAmazonInSeconds = updateIntervalAmazonInSeconds;
  59         this.updateIntervalSkillsInSeconds = updateIntervalSkillsInSeconds;
  60     }
  61
  62     private Integer getUpdateIntervalInSeconds(SmartHomeDevice shd) {
  63         Integer updateIntervalInSeconds = shd.updateIntervalInSeconds;
  64         if (updateIntervalInSeconds != null) {
  65             return updateIntervalInSeconds;
  66         }
  67         SmartHomeCapability[] capabilities = shd.capabilities;
  68         if (capabilities != null) {
  69             for (SmartHomeCapability capability : capabilities) {
  70                 if (capability != null && HandlerAcousticEventSensor.INTERFACE.equals(capability.interfaceName)) {
  71                     updateIntervalInSeconds = UPDATE_INTERVAL_ACOUSTIC_EVENTS_IN_SECONDS;
  72                     break;
  73                 }
  74             }
  75         }
  76         if (updateIntervalInSeconds == null) {
  77             String manufacturerName = shd.manufacturerName;
  78             if (manufacturerName != null && ("openHAB".equalsIgnoreCase(manufacturerName)
  79                     || manufacturerName.toLowerCase().startsWith("iobroker"))) {
  80                 // OpenHAB or ioBroker skill
  81                 if (logger.isTraceEnabled()) {
  82                     updateIntervalInSeconds = UPDATE_INTERVAL_PRIVATE_SKILLS_IN_SECONDS_TRACE;
  83                 } else {
  84                     updateIntervalInSeconds = UPDATE_INTERVAL_PRIVATE_SKILLS_IN_SECONDS;
  85                 }
  86             } else {
  87                 boolean isSkillDevice = false;
  88                 DriverIdentity driverIdentity = shd.driverIdentity;
  89                 isSkillDevice = driverIdentity != null && "SKILL".equals(driverIdentity.namespace);
  90                 if (isSkillDevice) {
  91                     updateIntervalInSeconds = updateIntervalSkillsInSeconds;
  92                 } else {
  93                     updateIntervalInSeconds = updateIntervalAmazonInSeconds;
  94                 }
  95             }
  96         }
  97         shd.updateIntervalInSeconds = updateIntervalInSeconds;
  98         return updateIntervalInSeconds;
  99     }
 100
 101     public void removeDevicesWithNoUpdate(List<SmartHomeDevice> devices) {
 102         Date updateTimeStamp = new Date();
 103         // check if new group is needed
 104         boolean syncAllGroups = false;
 105         for (SmartHomeDevice device : devices) {
 106             int updateIntervalInSeconds = getUpdateIntervalInSeconds(device);
 107             if (!updateGroups.containsKey(updateIntervalInSeconds)) {
 108                 UpdateGroup newGroup = new UpdateGroup(updateIntervalInSeconds);
 109                 updateGroups.put(updateIntervalInSeconds, newGroup);
 110                 syncAllGroups = true;
 111             }
 112         }
 113         // check which groups needs an update
 114         Set<Integer> groupsToUpdate = new HashSet<Integer>();
 115         for (UpdateGroup group : updateGroups.values()) {
 116             long millisecondsSinceLastUpdate = updateTimeStamp.getTime() - group.lastUpdated.getTime();
 117             if (syncAllGroups || millisecondsSinceLastUpdate >= group.intervalInSeconds * 1000) {
 118                 group.lastUpdated = updateTimeStamp;
 119                 groupsToUpdate.add(group.intervalInSeconds);
 120             }
 121         }
 122         // remove unused devices
 123         for (int i = devices.size() - 1; i >= 0; i--) {
 124             if (!groupsToUpdate.contains(getUpdateIntervalInSeconds(devices.get(i)))) {
 125                 devices.remove(i);
 126             }
 127         }
 128     }
 129 }