gobblin.ingestion.google.webmaster.ProducerJob Maven / Gradle / Ivy

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package gobblin.ingestion.google.webmaster;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.joda.time.DateTime;
import org.joda.time.Days;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;


public abstract class ProducerJob {
  static final DateTimeFormatter dateFormatter = DateTimeFormat.forPattern("yyyy-MM-dd");
  static final GsonBuilder gsonBuilder = new GsonBuilder();

  public abstract String getPage();

  /**
   * format is "yyyy-MM-dd"
   */
  public abstract String getStartDate();

  /**
   * format is "yyyy-MM-dd"
   */
  public abstract String getEndDate();

  public abstract GoogleWebmasterFilter.FilterOperator getOperator();

  /**
   * return how many pages are included in this job
   */
  public abstract int getPagesSize();

  public List partitionJobs() {
    DateTime start = dateFormatter.parseDateTime(getStartDate());
    DateTime end = dateFormatter.parseDateTime(getEndDate());
    int days = Days.daysBetween(start, end).getDays();
    if (days <= 0) {
      return new ArrayList<>();
    }
    int step = days / 2;
    return Arrays.asList(new SimpleProducerJob(getPage(), getStartDate(), dateFormatter.print(start.plusDays(step))),
        new SimpleProducerJob(getPage(), dateFormatter.print(start.plusDays(step + 1)), getEndDate()));
  }

  public static String serialize(Collection jobs) {
    //TODO: don't need to recreate objects if it's of type SimpleProducerJob
    Collection producerJobs = new ArrayList<>(jobs.size());
    for (ProducerJob job : jobs) {
      producerJobs.add(new SimpleProducerJob(job));
    }
    Gson gson = gsonBuilder.create();
    return gson.toJson(producerJobs);
  }
}