Examples with ReadWriteResourceManager me.retrodaredevil.solarthing.util.sync.ReadWriteResourceManager used on opensource projects

Example 1 with ReadWriteResourceManager

use of me.retrodaredevil.solarthing.util.sync.ReadWriteResourceManager in project solarthing by wildmountainfarms.

the class AutomationMain method startAutomation.

public static int startAutomation(List<ActionNode> actionNodes, DatabaseTimeZoneOptionBase options, long periodMillis) {
    LOGGER.info(SolarThingConstants.SUMMARY_MARKER, "Starting automation program.");
    final CouchDbDatabaseSettings couchSettings;
    try {
        couchSettings = ConfigUtil.expectCouchDbDatabaseSettings(options);
    } catch (IllegalArgumentException ex) {
        LOGGER.error("(Fatal)", ex);
        return SolarThingConstants.EXIT_CODE_INVALID_CONFIG;
    }
    SolarThingDatabase database = CouchDbSolarThingDatabase.create(CouchDbUtil.createInstance(couchSettings.getCouchProperties(), couchSettings.getOkHttpProperties()));
    VariableEnvironment variableEnvironment = new VariableEnvironment();
    // Use atomic reference so that access is thread safe
    AtomicReference<FragmentedPacketGroup> latestPacketGroupReference = new AtomicReference<>(null);
    // Use atomic reference so that access is thread safe
    AtomicReference<List<VersionedPacket<StoredAlterPacket>>> alterPacketsReference = new AtomicReference<>(null);
    // note this may return null, and that's OK // This is thread safe if needed
    FragmentedPacketGroupProvider fragmentedPacketGroupProvider = latestPacketGroupReference::get;
    Clock clock = Clock.systemUTC();
    SimpleDatabaseCache statusDatabaseCache = SimpleDatabaseCache.createDefault(clock);
    // not thread safe
    ResourceManager<SimpleDatabaseCache> statusDatabaseCacheManager = new BasicResourceManager<>(statusDatabaseCache);
    SimpleDatabaseCache eventDatabaseCache = SimpleDatabaseCache.createDefault(clock);
    ResourceManager<SimpleDatabaseCache> eventDatabaseCacheManager = new ReadWriteResourceManager<>(eventDatabaseCache);
    SimpleDatabaseCache openDatabaseCache = new SimpleDatabaseCache(Duration.ofMinutes(60), Duration.ofMinutes(40), Duration.ofMinutes(20), Duration.ofMinutes(15), clock);
    // not thread safe
    ResourceManager<SimpleDatabaseCache> openDatabaseCacheManager = new BasicResourceManager<>(openDatabaseCache);
    SimplePacketCache<AuthorizationPacket> authorizationPacketCache = new SimplePacketCache<>(Duration.ofSeconds(20), DatabaseDocumentKeyMap.createPacketSourceFromDatabase(database), false);
    String sourceId = options.getSourceId();
    InjectEnvironment injectEnvironment = new InjectEnvironment.Builder().add(new NanoTimeProviderEnvironment(NanoTimeProvider.SYSTEM_NANO_TIME)).add(new SourceIdEnvironment(sourceId)).add(// most of the time, it's better to use SolarThingDatabaseEnvironment instead, but this option is here in case it's needed
    new CouchDbEnvironment(couchSettings)).add(new SolarThingDatabaseEnvironment(CouchDbSolarThingDatabase.create(CouchDbUtil.createInstance(couchSettings.getCouchProperties(), couchSettings.getOkHttpProperties())))).add(new TimeZoneEnvironment(options.getZoneId())).add(// access is thread safe if needed
    new LatestPacketGroupEnvironment(fragmentedPacketGroupProvider)).add(// access is thread safe if needed
    new LatestFragmentedPacketGroupEnvironment(fragmentedPacketGroupProvider)).add(new EventDatabaseCacheEnvironment(eventDatabaseCacheManager)).add(new OpenDatabaseCacheEnvironment(openDatabaseCache)).add(// access is thread safe if needed
    new AlterPacketsEnvironment(alterPacketsReference::get)).add(new AuthorizationEnvironment(new DatabaseDocumentKeyMap(authorizationPacketCache))).build();
    ActionMultiplexer multiplexer = new Actions.ActionMultiplexerBuilder().build();
    while (!Thread.currentThread().isInterrupted()) {
        queryAndFeed(database.getStatusDatabase(), statusDatabaseCacheManager, true);
        queryAndFeed(database.getEventDatabase(), eventDatabaseCacheManager, true);
        queryAndFeed(database.getOpenDatabase(), openDatabaseCacheManager, false);
        {
            // Never cache alter packets, because it's always important that we have up-to-date data, or no data at all.
            List<VersionedPacket<StoredAlterPacket>> alterPackets = null;
            try {
                alterPackets = database.getAlterDatabase().queryAll(sourceId);
                LOGGER.debug("Got " + alterPackets.size() + " alter packets");
            } catch (SolarThingDatabaseException e) {
                LOGGER.error("Could not get alter packets", e);
            }
            alterPacketsReference.set(alterPackets);
        }
        // we have auto update turned off, so we have to call this
        authorizationPacketCache.updateIfNeeded();
        List<FragmentedPacketGroup> statusPacketGroups = PacketUtil.getPacketGroups(options.getSourceId(), options.getDefaultInstanceOptions(), statusDatabaseCache.getAllCachedPackets());
        if (statusPacketGroups != null) {
            FragmentedPacketGroup statusPacketGroup = statusPacketGroups.get(statusPacketGroups.size() - 1);
            latestPacketGroupReference.set(statusPacketGroup);
        }
        for (ActionNode actionNode : actionNodes) {
            multiplexer.add(actionNode.createAction(new ActionEnvironment(variableEnvironment, new VariableEnvironment(), injectEnvironment)));
        }
        multiplexer.update();
        LOGGER.debug("There are " + multiplexer.getActiveActions().size() + " active actions");
        try {
            Thread.sleep(periodMillis);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
            throw new RuntimeException(ex);
        }
    }
    return 0;
}