co.cask.cdap.guides.PageRankApp.java Source code

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Here is the source code for co.cask.cdap.guides.PageRankApp.java

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/*
 * Copyright  2014 Cask Data, Inc.
 *
 * Licensed 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 co.cask.cdap.guides;

import co.cask.cdap.api.app.AbstractApplication;
import co.cask.cdap.api.dataset.lib.ObjectStores;
import co.cask.cdap.api.service.http.HttpServiceHandler;
import co.cask.cdap.internal.io.UnsupportedTypeException;
import com.google.common.collect.ImmutableList;

/**
 * A CDAP PageRank application which computes the PageRank of connected URLs.
 */
public class PageRankApp extends AbstractApplication {

    @Override
    public void configure() {
        setName("PageRankApp");
        addSpark(new PageRankSpark());
        addService("PageRankService", new ImmutableList.Builder<HttpServiceHandler>().add(new BackLinksHandler())
                .add(new PageRankHandler()).build());
        try {
            ObjectStores.createObjectStore(getConfigurer(), "backLinks", String.class);
            ObjectStores.createObjectStore(getConfigurer(), "pageRanks", Double.class);
        } catch (UnsupportedTypeException e) {
            throw new RuntimeException("Will never happen: all classes above are supported", e);
        }
    }
}