001// --------------------------------------------------------------------------------
002// Copyright 2002-2024 Echo Three, LLC
003//
004// Licensed under the Apache License, Version 2.0 (the "License");
005// you may not use this file except in compliance with the License.
006// You may obtain a copy of the License at
007//
008//     http://www.apache.org/licenses/LICENSE-2.0
009//
010// Unless required by applicable law or agreed to in writing, software
011// distributed under the License is distributed on an "AS IS" BASIS,
012// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013// See the License for the specific language governing permissions and
014// limitations under the License.
015// --------------------------------------------------------------------------------
016
017package com.echothree.control.user.core.server.command;
018
019import com.echothree.model.control.party.common.PartyTypes;
020import com.echothree.model.data.core.server.entity.EntityInstance;
021import com.echothree.model.data.core.server.entity.EntityType;
022import com.echothree.model.data.core.server.entity.Event;
023import com.echothree.model.data.core.server.entity.EventSubscriber;
024import com.echothree.model.data.core.server.entity.EventSubscriberEntityInstance;
025import com.echothree.model.data.core.server.entity.EventSubscriberEntityType;
026import com.echothree.model.data.core.server.entity.EventSubscriberEventType;
027import com.echothree.model.data.core.server.entity.EventType;
028import com.echothree.model.data.core.server.entity.QueuedEvent;
029import com.echothree.model.data.user.common.pk.UserVisitPK;
030import com.echothree.util.common.command.BaseResult;
031import com.echothree.util.server.control.BaseSimpleCommand;
032import com.echothree.util.server.control.CommandSecurityDefinition;
033import com.echothree.util.server.control.PartyTypeDefinition;
034import java.util.Arrays;
035import java.util.Collections;
036import java.util.HashSet;
037import java.util.List;
038import java.util.Set;
039
040public class ProcessQueuedEventsCommand
041        extends BaseSimpleCommand {
042
043    private final static CommandSecurityDefinition COMMAND_SECURITY_DEFINITION;
044    
045    static {
046        COMMAND_SECURITY_DEFINITION = new CommandSecurityDefinition(Collections.unmodifiableList(Arrays.asList(
047                new PartyTypeDefinition(PartyTypes.UTILITY.name(), null)
048                )));
049    }
050    
051    /** Creates a new instance of ProcessQueuedEventsCommand */
052    public ProcessQueuedEventsCommand(UserVisitPK userVisitPK) {
053        super(userVisitPK, COMMAND_SECURITY_DEFINITION, false);
054    }
055
056    @Override
057    protected BaseResult execute() {
058        var coreControl = getCoreControl();
059        long remainingTime = (long) 2 * 60 * 1000; // 2 minutes
060        List<QueuedEvent> queuedEvents = coreControl.getQueuedEventsForUpdate();
061
062        for(var queuedEvent : queuedEvents) {
063            long startTime = System.currentTimeMillis();
064            Set<EventSubscriber> eventSubscribers = new HashSet<>();
065            Event event = queuedEvent.getEvent();
066
067            if(event != null) {
068                // TODO: this should not be necessary, bug 444
069                EventType eventType = event.getEventType();
070                EntityInstance entityInstance = event.getEntityInstance();
071                EntityType entityType = entityInstance.getEntityType();
072                List<EventSubscriberEventType> eventSubscriberEventTypes = coreControl.getEventSubscriberEventTypes(eventType);
073                List<EventSubscriberEntityType> eventSubscriberEntityTypes = coreControl.getEventSubscriberEntityTypes(entityType, eventType);
074                List<EventSubscriberEntityInstance> eventSubscriberEntityInstances = coreControl.getEventSubscriberEntityInstances(entityInstance, eventType);
075
076                eventSubscriberEventTypes.stream().map((eventSubscriberEventType) -> eventSubscriberEventType.getEventSubscriber()).filter((eventSubscriber) -> !eventSubscribers.contains(eventSubscriber)).map((eventSubscriber) -> {
077                    coreControl.createQueuedSubscriberEvent(eventSubscriber, event);
078                    return eventSubscriber;
079                }).forEach((eventSubscriber) -> {
080                    eventSubscribers.add(eventSubscriber);
081                });
082
083                eventSubscriberEntityTypes.stream().map((eventSubscriberEntityType) -> eventSubscriberEntityType.getEventSubscriber()).filter((eventSubscriber) -> !eventSubscribers.contains(eventSubscriber)).map((eventSubscriber) -> {
084                    coreControl.createQueuedSubscriberEvent(eventSubscriber, event);
085                    return eventSubscriber;
086                }).forEach((eventSubscriber) -> {
087                    eventSubscribers.add(eventSubscriber);
088                });
089                
090                eventSubscriberEntityInstances.stream().map((eventSubscriberEntityInstance) -> eventSubscriberEntityInstance.getEventSubscriber()).filter((eventSubscriber) -> !eventSubscribers.contains(eventSubscriber)).map((eventSubscriber) -> {
091                    coreControl.createQueuedSubscriberEvent(eventSubscriber, event);
092                    return eventSubscriber;
093                }).forEach((eventSubscriber) -> {
094                    eventSubscribers.add(eventSubscriber);
095                });
096
097                coreControl.removeQueuedEvent(queuedEvent);
098
099                remainingTime -= System.currentTimeMillis() - startTime;
100                if(remainingTime < 0) {
101                    break;
102                }
103            }
104        }
105
106        return null;
107    }
108}