org.eclipse.ditto.connectivity.service.messaging.persistence.strategies.commands.TestConnectionConflictStrategy Maven / Gradle / Ivy

/*
 * 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.connectivity.service.messaging.persistence.strategies.commands;

import static org.eclipse.ditto.internal.utils.persistentactors.results.ResultFactory.newQueryResult;

import javax.annotation.Nullable;

import org.eclipse.ditto.base.model.entity.metadata.Metadata;
import org.eclipse.ditto.connectivity.model.Connection;
import org.eclipse.ditto.connectivity.service.messaging.persistence.stages.ConnectionState;
import org.eclipse.ditto.internal.utils.persistentactors.results.Result;
import org.eclipse.ditto.connectivity.model.signals.commands.modify.TestConnection;
import org.eclipse.ditto.connectivity.model.signals.commands.modify.TestConnectionResponse;
import org.eclipse.ditto.connectivity.model.signals.events.ConnectivityEvent;

/**
 * This strategy handles the {@link org.eclipse.ditto.connectivity.model.signals.commands.modify.TestConnection} command
 * when a conflict was encountered.
 */
final class TestConnectionConflictStrategy extends AbstractConnectivityCommandStrategy {

    TestConnectionConflictStrategy() {
        super(TestConnection.class);
    }

    @Override
    protected Result> doApply(final Context context,
            @Nullable final Connection entity,
            final long nextRevision,
            final TestConnection command,
            @Nullable final Metadata metadata) {

        return newQueryResult(command,
                TestConnectionResponse.alreadyCreated(context.getState().id(), command.getDittoHeaders()));
    }
}