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PoliciesPersistenceStreamingActorCreator.java
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PoliciesPersistenceStreamingActorCreator.java
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/*
* Copyright (c) 2017 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.policies.service.persistence.actors;
import java.util.regex.Pattern;
import org.eclipse.ditto.internal.models.streaming.EntityIdWithRevision;
import org.eclipse.ditto.internal.utils.persistence.mongo.DefaultPersistenceStreamingActor;
import org.eclipse.ditto.internal.utils.persistence.mongo.streaming.PidWithSeqNr;
import org.eclipse.ditto.policies.api.PolicyTag;
import org.eclipse.ditto.policies.model.PolicyId;
import org.apache.pekko.actor.Props;
/**
* Creates an actor which streams information about persisted policies.
*/
public final class PoliciesPersistenceStreamingActorCreator {
/**
* The name of the created Actor in the ActorSystem.
*/
public static final String ACTOR_NAME = "persistenceStreamingActor";
private static final Pattern PERSISTENCE_ID_PATTERN = Pattern.compile(PolicyPersistenceActor.PERSISTENCE_ID_PREFIX);
private PoliciesPersistenceStreamingActorCreator() {
throw new AssertionError();
}
/**
* Creates Akka configuration object Props for this PersistenceQueriesActor.
*
* @return the Akka configuration Props object.
*/
public static Props props() {
return DefaultPersistenceStreamingActor.props(PolicyTag.class,
PoliciesPersistenceStreamingActorCreator::createElement,
PoliciesPersistenceStreamingActorCreator::createPidWithSeqNr);
}
private static PolicyTag createElement(final PidWithSeqNr pidWithSeqNr) {
final String id = PERSISTENCE_ID_PATTERN.matcher(pidWithSeqNr.getPersistenceId()).replaceFirst("");
final PolicyId policyId = PolicyId.of(id);
return PolicyTag.of(policyId, pidWithSeqNr.getSequenceNr());
}
private static PidWithSeqNr createPidWithSeqNr(final EntityIdWithRevision<?> connectionTag) {
return new PidWithSeqNr(PolicyPersistenceActor.PERSISTENCE_ID_PREFIX + connectionTag.getEntityId(),
connectionTag.getRevision());
}
}