gobblin.data.management.copy.replication.CopyRouteGeneratorOptimizer.java Source code

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Here is the source code for gobblin.data.management.copy.replication.CopyRouteGeneratorOptimizer.java

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/*
 * 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
 *
 *    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 gobblin.data.management.copy.replication;

import java.util.List;

import com.google.common.base.Optional;

/**
 * Provide the basic optimizer implementation in pull mode. The subclass should override the {@link #getOptimizedCopyRoute(List)} function
 * @author mitu
 *
 */
public class CopyRouteGeneratorOptimizer extends CopyRouteGeneratorBase {

    @Override
    public Optional<CopyRoute> getPullRoute(ReplicationConfiguration rc, EndPoint copyTo) {
        if (rc.getCopyMode() == ReplicationCopyMode.PUSH)
            return Optional.absent();

        DataFlowTopology topology = rc.getDataFlowToplogy();
        List<DataFlowTopology.DataFlowPath> paths = topology.getDataFlowPaths();

        for (DataFlowTopology.DataFlowPath p : paths) {
            List<CopyRoute> routes = p.getCopyRoutes();
            if (routes.isEmpty()) {
                continue;
            }

            if (routes.get(0).getCopyTo().equals(copyTo)) {
                return getOptimizedCopyRoute(routes);
            }
        }

        return Optional.absent();
    }

    public Optional<CopyRoute> getOptimizedCopyRoute(List<CopyRoute> routes) {
        return Optional.absent();
    }
}