org.apache.nutch.admin.management.FetchThread.java Source code

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Here is the source code for org.apache.nutch.admin.management.FetchThread.java

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/**
 * Copyright 2005 The Apache Software Foundation
 *
 * 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 org.apache.nutch.admin.management;

import org.apache.hadoop.fs.Path;
import java.io.IOException;
import java.util.logging.Logger;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.nutch.admin.TaskThread;
import org.apache.nutch.fetcher.Fetcher;

public class FetchThread extends TaskThread {

    private Fetcher fFetcher;

    private Path fSegment;

    private int fThreads;

    private boolean fParsing;

    private static final Logger LOG = Logger.getLogger(FetchThread.class.getName());

    public FetchThread(Configuration configuration, Path segment) {
        super(configuration);
        this.fFetcher = new Fetcher(configuration);
        this.fSegment = segment;
        this.fThreads = configuration.getInt("fetcher.threads.fetch", 10);
    }

    public void run() {
        FileSystem fileSystem = null;
        Path running = null;
        try {
            this.fMessage = "fetch.running";
            fileSystem = FileSystem.get(this.fConfiguration);
            running = new Path(this.fSegment, "fetch.running");
            fileSystem.createNewFile(running);
            this.fFetcher.fetch(this.fSegment, this.fThreads, true);
            fileSystem.createNewFile(new Path(this.fSegment, "fetch.done"));
            if (this.fParsing) {
                fileSystem.createNewFile(new Path(this.fSegment, "parse.done"));
            }
        } catch (IOException e) {
            LOG.warning(e.toString());
            this.fMessage = e.toString();
        } finally {
            try {
                if (fileSystem != null) {
                    fileSystem.delete(running);
                }
            } catch (IOException e) {
                LOG.warning(e.toString());
            }
        }
    }
}