/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.elasticsearch.river.cluster;

import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.river.RiverName;

/**
 *
 */
public class RiverNodeHelper {

    public static boolean isRiverNode(DiscoveryNode node) {
        // we don't allocate rivers on client nodes
        if (node.clientNode()) {
            return false;
        }
        String river = node.attributes().get("river");
        // by default, if not set, it's a river node (better OOB exp)
        if (river == null) {
            return true;
        }
        if ("_none_".equals(river)) {
            return false;
        }
        // there is at least one river settings, we need it
        return true;
    }

    public static boolean isRiverNode(DiscoveryNode node, RiverName riverName) {
        if (!isRiverNode(node)) {
            return false;
        }
        String river = node.attributes().get("river");
        // by default, if not set, its an river node (better OOB exp)
        return river == null || river.contains(riverName.type()) || river.contains(riverName.name());
    }
}
