webindex.data.LoadS3.java Source code

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Here is the source code for webindex.data.LoadS3.java

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/*
 * Copyright 2015 Webindex authors (see AUTHORS)
 * 
 * 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 webindex.data;

import java.io.File;
import java.net.URL;
import java.util.List;

import com.google.common.util.concurrent.RateLimiter;
import org.apache.fluo.api.client.FluoClient;
import org.apache.fluo.api.client.FluoFactory;
import org.apache.fluo.api.client.LoaderExecutor;
import org.apache.fluo.api.config.FluoConfiguration;
import org.apache.spark.SparkConf;
import org.apache.spark.api.java.JavaRDD;
import org.apache.spark.api.java.JavaSparkContext;
import org.archive.io.ArchiveReader;
import org.archive.io.ArchiveRecord;
import org.archive.io.warc.WARCReaderFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import webindex.core.WebIndexConfig;
import webindex.core.models.Page;
import webindex.data.fluo.PageLoader;
import webindex.data.spark.IndexEnv;
import webindex.data.util.ArchiveUtil;

public class LoadS3 {

    private static final Logger log = LoggerFactory.getLogger(LoadS3.class);

    public static void main(String[] args) throws Exception {

        if (args.length != 2) {
            log.error("Usage: LoadS3 <pathsFile> <range>");
            System.exit(1);
        }
        final List<String> loadList = IndexEnv.getPathsRange(args[0], args[1]);
        if (loadList.isEmpty()) {
            log.error("No files to load given {} {}", args[0], args[1]);
            System.exit(1);
        }

        final WebIndexConfig webIndexConfig = WebIndexConfig.load();

        final int rateLimit = webIndexConfig.getLoadRateLimit();
        final String appName = webIndexConfig.fluoApp;

        SparkConf sparkConf = new SparkConf().setAppName("webindex-load-s3");
        try (JavaSparkContext ctx = new JavaSparkContext(sparkConf)) {

            log.info("Loading {} files (Range {} of paths file {}) from AWS", loadList.size(), args[1], args[0]);

            JavaRDD<String> loadRDD = ctx.parallelize(loadList, loadList.size());

            final String prefix = WebIndexConfig.CC_URL_PREFIX;

            loadRDD.foreachPartition(iter -> {
                final FluoConfiguration fluoConfig = new FluoConfiguration(new File("fluo-conn.properties"));
                fluoConfig.setApplicationName(appName);
                final RateLimiter rateLimiter = rateLimit > 0 ? RateLimiter.create(rateLimit) : null;
                try (FluoClient client = FluoFactory.newClient(fluoConfig);
                        LoaderExecutor le = client.newLoaderExecutor()) {
                    iter.forEachRemaining(path -> {
                        String urlToCopy = prefix + path;
                        log.info("Loading {} to Fluo", urlToCopy);
                        try {
                            ArchiveReader reader = WARCReaderFactory.get(new URL(urlToCopy), 0);
                            for (ArchiveRecord record : reader) {
                                Page page = ArchiveUtil.buildPageIgnoreErrors(record);
                                if (page.getOutboundLinks().size() > 0) {
                                    log.info("Loading page {} with {} links", page.getUrl(),
                                            page.getOutboundLinks().size());
                                    if (rateLimiter != null) {
                                        rateLimiter.acquire();
                                    }
                                    le.execute(PageLoader.updatePage(page));
                                }
                            }
                        } catch (Exception e) {
                            log.error("Exception while processing {}", path, e);
                        }
                    });
                }
            });
        }
    }
}