+++ /dev/null
-/*
- * Copyright © 2010 Anthony Towns <aj@erisian.com.au>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-package org.altusmetrum.altosuilib_2;
-
-import javax.swing.*;
-import javax.imageio.ImageIO;
-import java.awt.image.*;
-import java.awt.*;
-import java.io.*;
-import java.net.*;
-
-public class AltosSiteMapCache {
- static final long google_maps_ratelimit_ms = 1200;
- // Google limits static map queries to 50 per minute per IP, so
- // each query should take at least 1.2 seconds.
-
- static final int success = 0;
- static final int loading = 1;
- static final int failed = 2;
- static final int bad_request = 3;
- static final int forbidden = 4;
-
- public static boolean has_map(File file, String url) {
- return file.exists();
- }
-
- static long forbidden_time;
- static boolean forbidden_set = false;
- static final long forbidden_interval = 60l * 1000l * 1000l * 1000l;
-
- static private Object fetch_lock = new Object();
-
- private static int fetch_one(File file, String url) {
- URL u;
-
- try {
- u = new URL(url);
- } catch (java.net.MalformedURLException e) {
- return bad_request;
- }
-
- byte[] data;
- URLConnection uc = null;
- try {
- uc = u.openConnection();
- String type = uc.getContentType();
- int contentLength = uc.getContentLength();
- if (uc instanceof HttpURLConnection) {
- int response = ((HttpURLConnection) uc).getResponseCode();
- switch (response) {
- case HttpURLConnection.HTTP_FORBIDDEN:
- case HttpURLConnection.HTTP_PAYMENT_REQUIRED:
- case HttpURLConnection.HTTP_UNAUTHORIZED:
- forbidden_time = System.nanoTime();
- forbidden_set = true;
- return forbidden;
- }
- }
- InputStream in = new BufferedInputStream(uc.getInputStream());
- int bytesRead = 0;
- int offset = 0;
- data = new byte[contentLength];
- while (offset < contentLength) {
- bytesRead = in.read(data, offset, data.length - offset);
- if (bytesRead == -1)
- break;
- offset += bytesRead;
- }
- in.close();
-
- if (offset != contentLength)
- return failed;
-
- } catch (IOException e) {
- return failed;
- }
-
- try {
- FileOutputStream out = new FileOutputStream(file);
- out.write(data);
- out.flush();
- out.close();
- } catch (FileNotFoundException e) {
- return bad_request;
- } catch (IOException e) {
- if (file.exists())
- file.delete();
- return bad_request;
- }
- return success;
- }
-
- public static int fetch_map(File file, String url) {
- if (file.exists())
- return success;
-
- if (forbidden_set && (System.nanoTime() - forbidden_time) < forbidden_interval)
- return forbidden;
-
- int status = bad_request;
-
- if (!AltosUIVersion.has_google_maps_api_key()) {
- synchronized (fetch_lock) {
- long startTime = System.nanoTime();
- status = fetch_one(file, url);
- if (status == success) {
- long duration_ms = (System.nanoTime() - startTime) / 1000000;
- if (duration_ms < google_maps_ratelimit_ms) {
- try {
- Thread.sleep(google_maps_ratelimit_ms - duration_ms);
- } catch (InterruptedException e) {
- Thread.currentThread().interrupt();
- }
- }
- }
- }
- } else {
- status = fetch_one(file, url);
- }
- return status;
- }
-
- static final int min_cache_size = 9;
- static final int max_cache_size = 24;
-
- static int cache_size = min_cache_size;
-
- static AltosSiteMapImage[] images = new AltosSiteMapImage[cache_size];
-
- static Object cache_lock = new Object();
-
- public static void set_cache_size(int new_size) {
- if (new_size < min_cache_size)
- new_size = min_cache_size;
- if (new_size > max_cache_size)
- new_size = max_cache_size;
- if (new_size == cache_size)
- return;
-
- synchronized(cache_lock) {
- AltosSiteMapImage[] new_images = new AltosSiteMapImage[new_size];
-
- for (int i = 0; i < cache_size; i++) {
- if (i < new_size)
- new_images[i] = images[i];
- else if (images[i] != null)
- images[i].flush();
- }
- images = new_images;
- cache_size = new_size;
- }
- }
-
- static long used;
-
- private static Point tile_loc(AltosSiteMapTile tile) {
- Rectangle r = tile.getBounds();
- int x = r.x / 512;
- int y = r.y / 512;
-
- return new Point (x, y);
- }
-
-/*
- private static void dump_cache() {
- int min_x = 1000, max_x = -1000, min_y = 1000, max_y = -1000;
-
- for (int i = 0; i < cache_size; i++) {
- AltosSiteMapImage image = images[i];
- if (image != null) {
- Point p = tile_loc(image.tile);
- min_x = min_x < p.x ? min_x : p.x;
- max_x = max_x > p.x ? max_x : p.x;
- min_y = min_y < p.y ? min_y : p.y;
- max_y = max_y > p.y ? max_y : p.y;
- System.out.printf ("entry %d %d,%d used %d\n", i, p.x, p.y, image.used);
- } else {
- System.out.printf ("entry %d empty\n", i);
- }
- }
-
- int[][] map = new int[max_x - min_x + 1][max_y - min_y + 1];
- for (int i = 0; i < cache_size; i++) {
- AltosSiteMapImage image = images[i];
- if (image != null) {
- Point p = tile_loc(image.tile);
- map[p.x - min_x][p.y - min_y]++;
- }
- }
-
- for (int y = min_y; y <= max_y; y++) {
- for (int x = min_x; x <= max_x; x++)
- System.out.printf (" %2d", map[x - min_x][y - min_y]);
- System.out.printf("\n");
- }
- }
-*/
-
- public static AltosSiteMapImage get_image(AltosSiteMapTile tile, File file, int width, int height) {
- int oldest = -1;
- long age = used;
-
- synchronized(cache_lock) {
- AltosSiteMapImage image = null;
- for (int i = 0; i < cache_size; i++) {
- image = images[i];
-
- if (image == null) {
- oldest = i;
- break;
- }
- if (image.tile == tile && file.equals(image.file)) {
- image.used = used++;
- return image;
- }
- if (image.used < age) {
- oldest = i;
- age = image.used;
- }
- }
-
- try {
- image = new AltosSiteMapImage(tile, file, width, height);
- image.used = used++;
- if (images[oldest] != null) {
-// dump_cache();
- AltosSiteMap.debug_component(images[oldest].tile, "replacing cache");
- AltosSiteMap.debug_component(tile, "replaced cache");
- images[oldest].flush();
- }
- images[oldest] = image;
- return image;
- } catch (IOException e) {
- return null;
- }
- }
- }
-}
projects / fw / altos / blobdiff