Stormcrawler没有为elasticsearch获取/索引页面

我正在使用Stormcrawler和Elasticsearch example 并且不显示带有 FETCHED 爬网网页时在Kibana中的状态 http://books.toscrape.com/

仍然在控制台上,网页似乎被提取和解析

48239 [Thread-26-fetcher-executor[3 3]] INFO  c.d.s.b.FetcherBolt - [Fetcher #3] Threads : 0    queues : 1      in_queues : 1
48341 [FetcherThread #7] INFO  c.d.s.b.FetcherBolt - [Fetcher #3] Fetched http://books.toscrape.com/catalogue/category/books_1/index.html with status 200 in msec 86
48346 [Thread-46-parse-executor[5 5]] INFO  c.d.s.b.JSoupParserBolt - Parsing : starting http://books.toscrape.com/catalogue/category/books_1/index.html
48362 [Thread-46-parse-executor[5 5]] INFO  c.d.s.b.JSoupParserBolt - Parsed http://books.toscrape.com/catalogue/category/books_1/index.html in 13 msec

此外,Elasticsearch的索引似乎可以获得一些项目,即使这些项目没有标题

Screenshot of Kibana

我扩展了 com.digitalpebble.stormcrawler.elasticsearch.bolt.IndexerBolt 还将网页的元数据存储在本地文件中,而它似乎根本没有得到任何元组。因为索引器还将url的状态标记为 取来 这可以解释在基巴纳提到的观察结果。

这种行为有什么解释吗?我已经将爬虫配置恢复为标准配置,但爬虫中的索引螺栓除外。flux来管理我的班级。

拓扑配置:

name: "crawler"

includes:
    - resource: true
      file: "/crawler-default.yaml"
      override: false



    - resource: false
      file: "es-conf.yaml"
      override: true

spouts:
  - id: "spout"
    className: "com.digitalpebble.stormcrawler.elasticsearch.persistence.AggregationSpout"
    parallelism: 10

bolts:
  - id: "partitioner"
    className: "com.digitalpebble.stormcrawler.bolt.URLPartitionerBolt"
    parallelism: 1
  - id: "fetcher"
    className: "com.digitalpebble.stormcrawler.bolt.FetcherBolt"
    parallelism: 1
  - id: "sitemap"
    className: "com.digitalpebble.stormcrawler.bolt.SiteMapParserBolt"
    parallelism: 1
  - id: "parse"
    className: "com.digitalpebble.stormcrawler.bolt.JSoupParserBolt"
    parallelism: 1
  - id: "index"
    className: "de.hpi.bpStormcrawler.IndexerBolt"
    parallelism: 1
  - id: "status"
    className: "com.digitalpebble.stormcrawler.elasticsearch.persistence.StatusUpdaterBolt"
    parallelism: 1
  - id: "status_metrics"
    className: "com.digitalpebble.stormcrawler.elasticsearch.metrics.StatusMetricsBolt"
    parallelism: 1

streams:
  - from: "spout"
    to: "partitioner"
    grouping:
      type: SHUFFLE

  - from: "spout"
    to: "status_metrics"
    grouping:
      type: SHUFFLE

  - from: "partitioner"
    to: "fetcher"
    grouping:
      type: FIELDS
      args: ["url"]

  - from: "fetcher"
    to: "sitemap"
    grouping:
      type: LOCAL_OR_SHUFFLE

  - from: "sitemap"
    to: "parse"
    grouping:
      type: LOCAL_OR_SHUFFLE

  - from: "parse"
    to: "index"
    grouping:
      type: LOCAL_OR_SHUFFLE

  - from: "fetcher"
    to: "status"
    grouping:
      type: FIELDS
      args: ["url"]
      streamId: "status"

  - from: "sitemap"
    to: "status"
    grouping:
      type: FIELDS
      args: ["url"]
      streamId: "status"

  - from: "parse"
    to: "status"
    grouping:
      type: FIELDS
      args: ["url"]
      streamId: "status"

  - from: "index"
    to: "status"
    grouping:
      type: FIELDS
      args: ["url"]
      streamId: "status"

重新配置的索引器螺栓

package de.hpi.bpStormcrawler;

/**
 * Licensed to DigitalPebble Ltd under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * DigitalPebble 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.
 */


import static com.digitalpebble.stormcrawler.Constants.StatusStreamName;
import static org.elasticsearch.common.xcontent.XContentFactory.jsonBuilder;

import java.io.*;
import java.util.Iterator;
import java.util.Map;

import org.apache.storm.metric.api.MultiCountMetric;
import org.apache.storm.task.OutputCollector;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.tuple.Tuple;
import org.apache.storm.tuple.Values;
import org.elasticsearch.action.DocWriteRequest;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.digitalpebble.stormcrawler.Metadata;
import com.digitalpebble.stormcrawler.elasticsearch.ElasticSearchConnection;
import com.digitalpebble.stormcrawler.indexing.AbstractIndexerBolt;
import com.digitalpebble.stormcrawler.persistence.Status;
import com.digitalpebble.stormcrawler.util.ConfUtils;

/**
 * Sends documents to ElasticSearch. Indexes all the fields from the tuples or a
 * Map <String,Object> from a named field.
 */
@SuppressWarnings("serial")
public class IndexerBolt extends AbstractIndexerBolt {

    private static final Logger LOG = LoggerFactory
            .getLogger(IndexerBolt.class);

    private static final String ESBoltType = "indexer";

    static final String ESIndexNameParamName = "es.indexer.index.name";
    static final String ESDocTypeParamName = "es.indexer.doc.type";
    private static final String ESCreateParamName = "es.indexer.create";

    private OutputCollector _collector;

    private String indexName;
    private String docType;

    // whether the document will be created only if it does not exist or
    // overwritten
    private boolean create = false;
    File indexFile;

    private MultiCountMetric eventCounter;

    private ElasticSearchConnection connection;

    @SuppressWarnings({ "unchecked", "rawtypes" })
    @Override
    public void prepare(Map conf, TopologyContext context,
                        OutputCollector collector) {
        super.prepare(conf, context, collector);
        _collector = collector;

        indexName = ConfUtils.getString(conf, IndexerBolt.ESIndexNameParamName,
                "fetcher");
        docType = ConfUtils.getString(conf, IndexerBolt.ESDocTypeParamName,
                "doc");
        create = ConfUtils.getBoolean(conf, IndexerBolt.ESCreateParamName,
                false);

        try {
            connection = ElasticSearchConnection
                    .getConnection(conf, ESBoltType);
        } catch (Exception e1) {
            LOG.error("Can't connect to ElasticSearch", e1);
            throw new RuntimeException(e1);
        }

        this.eventCounter = context.registerMetric("ElasticSearchIndexer",
                new MultiCountMetric(), 10);

        indexFile = new File("/Users/jonaspohlmann/code/HPI/BP/stormCrawlerSpike/spikeStormCrawler2/index.log");
    }

    @Override
    public void cleanup() {
        if (connection != null)
            connection.close();
    }

    @Override
    public void execute(Tuple tuple) {

        String url = tuple.getStringByField("url");

        // Distinguish the value used for indexing
        // from the one used for the status
        String normalisedurl = valueForURL(tuple);

        Metadata metadata = (Metadata) tuple.getValueByField("metadata");
        String text = tuple.getStringByField("text");


        //BP: added Content Field
        String content = new String(tuple.getBinaryByField("content"));

        boolean keep = filterDocument(metadata);
        if (!keep) {
            eventCounter.scope("Filtered").incrBy(1);
            // treat it as successfully processed even if
            // we do not index it
            _collector.emit(StatusStreamName, tuple, new Values(url, metadata,
                    Status.FETCHED));
            _collector.ack(tuple);
            return;
        }

        try {
            XContentBuilder builder = jsonBuilder().startObject();

            // display text of the document?
            if (fieldNameForText() != null) {
                builder.field(fieldNameForText(), trimText(text));
            }

            // send URL as field?
            if (fieldNameForURL() != null) {
                builder.field(fieldNameForURL(), normalisedurl);
            }


            // which metadata to display?
            Map<String, String[]> keyVals = filterMetadata(metadata);

            Iterator<String> iterator = keyVals.keySet().iterator();
            while (iterator.hasNext()) {
                String fieldName = iterator.next();
                String[] values = keyVals.get(fieldName);
                if (values.length == 1) {
                    builder.field(fieldName, values[0]);
                    try {
                        saveStringToFile(indexFile, fieldName + "\t" + values[0]);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                } else if (values.length > 1) {
                    builder.array(fieldName, values);
                }
            }

            builder.endObject();

            String sha256hex = org.apache.commons.codec.digest.DigestUtils
                    .sha256Hex(normalisedurl);

            IndexRequest indexRequest = new IndexRequest(indexName, docType,
                    sha256hex).source(builder);

            DocWriteRequest.OpType optype = DocWriteRequest.OpType.INDEX;

            if (create) {
                optype = DocWriteRequest.OpType.CREATE;
            }

            indexRequest.opType(optype);

            connection.getProcessor().add(indexRequest);

            eventCounter.scope("Indexed").incrBy(1);

            _collector.emit(StatusStreamName, tuple, new Values(url, metadata,
                    Status.FETCHED));
            _collector.ack(tuple);

        } catch (IOException e) {
            LOG.error("Error sending log tuple to ES", e);
            // do not send to status stream so that it gets replayed
            _collector.fail(tuple);
        }
    }
    private void saveStringToFile(File file, String stringToWrite) throws IOException {
        String pathName = file.getPath();
        File folder = file.getParentFile();

        if (!folder.exists() && !folder.mkdirs()) {
            throw new IOException("Couldn't create the storage folder: " + folder.getAbsolutePath() + " does it already exist ?");
        }

        try (PrintWriter out = new PrintWriter(new FileOutputStream(file, true))) {
            out.append(stringToWrite + '\n');

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }

}