DtoConverter.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.api.system.server;

import org.eclipse.che.api.system.shared.dto.SystemEventDto;
import org.eclipse.che.api.system.shared.dto.SystemServiceEventDto;
import org.eclipse.che.api.system.shared.dto.SystemServiceItemStoppedEventDto;
import org.eclipse.che.api.system.shared.dto.SystemStatusChangedEventDto;
import org.eclipse.che.api.system.shared.event.SystemEvent;
import org.eclipse.che.api.system.shared.event.SystemStatusChangedEvent;
import org.eclipse.che.api.system.shared.event.service.SystemServiceEvent;
import org.eclipse.che.api.system.shared.event.service.SystemServiceItemStoppedEvent;
import org.eclipse.che.dto.server.DtoFactory;

/**
 * Converts events to corresponding DTOs.
 *
 * @author Yevhenii Voevodin
 */
public final class DtoConverter {

    /**
     * Creates {@link SystemStatusChangedEventDto} from event.
     */
    public static SystemStatusChangedEventDto asDto(SystemStatusChangedEvent event) {
        SystemStatusChangedEventDto dto = DtoFactory.newDto(SystemStatusChangedEventDto.class);
        dto.setType(event.getType());
        dto.setStatus(event.getStatus());
        dto.setPrevStatus(event.getPrevStatus());
        return dto;
    }

    /**
     * Creates {@link SystemServiceEventDto} from event.
     */
    public static SystemServiceEventDto asDto(SystemServiceEvent event) {
        SystemServiceEventDto dto = DtoFactory.newDto(SystemServiceEventDto.class);
        dto.setService(event.getServiceName());
        dto.setType(event.getType());
        return dto;
    }

    /**
     * Creates {@link SystemServiceItemStoppedEventDto} from event.
     */
    public static SystemServiceItemStoppedEventDto asDto(SystemServiceItemStoppedEvent event) {
        SystemServiceItemStoppedEventDto dto = DtoFactory.newDto(SystemServiceItemStoppedEventDto.class);
        dto.setService(event.getServiceName());
        dto.setType(event.getType());
        dto.setCurrent(event.getCurrent());
        dto.setTotal(event.getTotal());
        dto.setItem(event.getItem());
        return dto;
    }

    /**
     * Converts given event to the corresponding DTO, if event type
     * is unknown throws {@link IllegalArgumentException}.
     */
    public static SystemEventDto asDto(SystemEvent event) {
        switch (event.getType()) {
            case STATUS_CHANGED:
                return asDto((SystemStatusChangedEvent)event);
            case SERVICE_ITEM_STOPPED:
                return asDto((SystemServiceItemStoppedEvent)event);
            case SERVICE_STOPPED:
            case STOPPING_SERVICE:
                return asDto((SystemServiceEvent)event);
            default:
                throw new IllegalArgumentException("Can't convert event to dto, event type '" + event.getType() + "' is unknown");
        }
    }

    private DtoConverter() {}
}