notification/src/main/java/org/apache/atlas/notification/AbstractNotification.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.atlas.notification;

import org.apache.atlas.AtlasException;
import org.apache.commons.configuration.Configuration;

import java.util.Arrays;
import java.util.List;

/**
 * Abstract notification interface implementation.
 */
public abstract class AbstractNotification implements NotificationInterface {

    private static final String PROPERTY_EMBEDDED = PROPERTY_PREFIX + ".embedded";
    private final boolean embedded;


    // ----- Constructors ------------------------------------------------------

    public AbstractNotification(Configuration applicationProperties) throws AtlasException {
        this.embedded = applicationProperties.getBoolean(PROPERTY_EMBEDDED, false);
    }


    // ----- AbstractNotificationInterface -------------------------------------

    /**
     * Determine whether or not the notification service embedded in Atlas server.
     *
     * @return true if the the notification service embedded in Atlas server.
     */
    protected final boolean isEmbedded() {
        return embedded;
    }

    @Override
    public <T> void send(NotificationType type, List<T> messages) throws NotificationException {
        String[] strMessages = new String[messages.size()];
        for (int index = 0; index < messages.size(); index++) {
            strMessages[index] = AbstractNotificationConsumer.GSON.toJson(messages.get(index));
        }
        _send(type, strMessages);
    }

    @Override
    public <T> void send(NotificationType type, T... messages) throws NotificationException {
        send(type, Arrays.asList(messages));
    }

    protected abstract void _send(NotificationType type, String[] messages) throws NotificationException;
}