PrerenderEkonomiskaKartan.java

package se.kodapan.osm.slippymap;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import se.kodapan.osm.util.slippymap.SlippyMap;
import se.kodapan.osm.util.slippymap.TMS;
import se.kodapan.osm.util.slippymap.Tile;

import java.io.InputStream;
import java.util.List;

/**
 * @author kalle
 * @since 8/25/13 8:02 PM
 */
public class PrerenderEkonomiskaKartan {

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

  /**
   * mvn exec:java -Dexec.mainClass="se.kodapan.osm.slippymap.PrerenderEkonomiskaKartan"
   *
   * @param args
   * @throws Exception
   */
  public static void main(String[] args) throws Exception {

    HttpClient httpClient = new DefaultHttpClient();

    double southLatitude = 10.634765625d;
    double westLongitude = 55.42901345240739d;
    double northLatitude = 24.9609375d;
    double eastLongitude = 69.50376519563683d;

    byte[] buf = new byte[49152];


    SlippyMap slippyMap = new TMS("http://osm.kodapan.se:8080/tms/1.0.0/ek_EPSG3857/%{z}/%{x}/%{y}.png");


    int totalTiles = 0;
    for (int z = 12; z < 18; z++) {

      long totalBytesReadZ = 0;

      long timestampZ = System.currentTimeMillis();

      List<Tile> tiles = slippyMap.listTiles(southLatitude, westLongitude, northLatitude, eastLongitude, z);
//      Collections.shuffle(tiles);

      long statusBytesRead = 0;

      int tilesProccessedZ = 0;
      for (Tile tile : tiles) {

        tilesProccessedZ++;
        totalTiles++;


        String url = slippyMap.toURL(tile);
        HttpGet get = new HttpGet(url);
        HttpResponse response = httpClient.execute(get);
        if (response.getStatusLine().getStatusCode() == 200) {
          long bytesRead = 0;


          try {
            InputStream httpContent = response.getEntity().getContent();

            while (true) {
              int read = httpContent.read(buf, 0, buf.length);
              if (read > 0) {
                bytesRead += read;
                statusBytesRead += read;
                totalBytesReadZ += read;
              } else {
                break;
              }
            }
          } finally {
            response.getEntity().getContent().close();
          }


          if (statusBytesRead > 1024 * 1024) {
            double tilesLeft = tiles.size() - tilesProccessedZ;
            double millisecondsPerTile = (System.currentTimeMillis() - timestampZ) / tilesProccessedZ;
            double millisecondsToCompletion = millisecondsPerTile * tilesLeft;
            int estimatedMinutesToCompletion = (int) (millisecondsToCompletion / 1000d / 60d);
            double bytesPerTile = totalBytesReadZ / tilesProccessedZ;
            int estimatedTotalMegabytes = (int)(bytesPerTile * (double)tiles.size()) / 1024/1024;
            log.info("Processed #" + totalTiles + "/ " + tiles.size() + " " + url + "\t" + bytesRead + " bytes");
            log.info("Estimated " + estimatedMinutesToCompletion + " minutes left to completion.");
            log.info((totalBytesReadZ / 1024 / 1024) + " total megabytes worth of tiles successfully requested, estimated total of " + estimatedTotalMegabytes + " megabytes.");
            statusBytesRead = 0;
          }


        } else {
          log.warn(tile.toString() + "\t" + response.getStatusLine().toString());
        }


      }
      System.currentTimeMillis();
    }

    System.currentTimeMillis();
  }


}