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ConnectivityCachingSignalEnrichmentProvider.java
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ConnectivityCachingSignalEnrichmentProvider.java
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/*
* Copyright (c) 2019 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.services.connectivity.mapping;
import java.util.concurrent.Executor;
import org.eclipse.ditto.model.connectivity.ConnectionId;
import org.eclipse.ditto.services.base.config.SignalEnrichmentConfig;
import org.eclipse.ditto.services.models.signalenrichment.CachingSignalEnrichmentFacade;
import org.eclipse.ditto.services.models.signalenrichment.CachingSignalEnrichmentFacadeConfig;
import org.eclipse.ditto.services.models.signalenrichment.DefaultCachingSignalEnrichmentFacadeConfig;
import org.eclipse.ditto.services.models.signalenrichment.SignalEnrichmentFacade;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
/**
* Provider for Connectivity-service of signal-enriching facades that uses an async Caffeine cache in order to load
* extra data to enrich.
*/
public final class ConnectivityCachingSignalEnrichmentProvider implements ConnectivitySignalEnrichmentProvider {
private final ConnectivitySignalEnrichmentProvider cacheLoaderProvider;
private final CachingSignalEnrichmentFacadeConfig cachingSignalEnrichmentFacadeConfig;
private final Executor cacheLoaderExecutor;
/**
* Instantiate this provider. Called by reflection.
*
* @param actorSystem The actor system for which this provider is instantiated.
* @param commandHandler The recipient of retrieve-thing commands - for this class this is the conciergeForwarder.
* @param signalEnrichmentConfig Configuration for this provider.
*/
@SuppressWarnings("unused")
public ConnectivityCachingSignalEnrichmentProvider(final ActorSystem actorSystem,
final ActorRef commandHandler,
final SignalEnrichmentConfig signalEnrichmentConfig) {
cacheLoaderProvider = new ConnectivityByRoundTripSignalEnrichmentProvider(actorSystem, commandHandler,
signalEnrichmentConfig);
cachingSignalEnrichmentFacadeConfig =
DefaultCachingSignalEnrichmentFacadeConfig.of(signalEnrichmentConfig.getProviderConfig());
cacheLoaderExecutor = actorSystem.dispatchers().lookup("signal-enrichment-cache-dispatcher");
}
@Override
public SignalEnrichmentFacade createFacade(final ConnectionId connectionId) {
return CachingSignalEnrichmentFacade.of(
cacheLoaderProvider.createFacade(connectionId),
cachingSignalEnrichmentFacadeConfig.getCacheConfig(),
cacheLoaderExecutor,
"connectivity"
);
}
}