001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.data.imagery; 003 004import java.io.File; 005import java.lang.reflect.Constructor; 006import java.util.Map; 007import java.util.concurrent.ConcurrentHashMap; 008import java.util.concurrent.TimeUnit; 009 010import org.apache.commons.jcs.access.behavior.ICacheAccess; 011import org.openstreetmap.gui.jmapviewer.interfaces.TileLoader; 012import org.openstreetmap.gui.jmapviewer.interfaces.TileLoaderListener; 013import org.openstreetmap.josm.data.Version; 014import org.openstreetmap.josm.data.cache.BufferedImageCacheEntry; 015import org.openstreetmap.josm.data.preferences.StringProperty; 016import org.openstreetmap.josm.spi.preferences.Config; 017import org.openstreetmap.josm.tools.CheckParameterUtil; 018import org.openstreetmap.josm.tools.Logging; 019 020/** 021 * TileLoaderFactory creating JCS cached TileLoaders 022 * 023 * @author Wiktor Niesiobędzki 024 * @since 8526 025 */ 026public class CachedTileLoaderFactory implements TileLoaderFactory { 027 /** 028 * Keeps the cache directory where 029 */ 030 public static final StringProperty PROP_TILECACHE_DIR = getTileCacheDir(); 031 private final ICacheAccess<String, BufferedImageCacheEntry> cache; 032 private Constructor<? extends TileLoader> tileLoaderConstructor; 033 034 /** 035 * @param cache cache instance which will be used by tile loaders created by this tile loader 036 * @param tileLoaderClass tile loader class that will be created 037 * @throws IllegalArgumentException if a suitable constructor cannot be found for {@code tileLoaderClass} 038 */ 039 public CachedTileLoaderFactory(ICacheAccess<String, BufferedImageCacheEntry> cache, Class<? extends TileLoader> tileLoaderClass) { 040 CheckParameterUtil.ensureParameterNotNull(cache, "cache"); 041 this.cache = cache; 042 try { 043 tileLoaderConstructor = tileLoaderClass.getConstructor( 044 TileLoaderListener.class, 045 ICacheAccess.class, 046 TileJobOptions.class 047 ); 048 } catch (NoSuchMethodException | SecurityException e) { 049 Logging.log(Logging.LEVEL_WARN, "Unable to initialize cache tile loader factory", e); 050 throw new IllegalArgumentException(e); 051 } 052 } 053 054 private static StringProperty getTileCacheDir() { 055 String defPath = null; 056 try { 057 defPath = new File(Config.getDirs().getCacheDirectory(true), "tiles").getAbsolutePath(); 058 } catch (SecurityException e) { 059 Logging.log(Logging.LEVEL_WARN, "Unable to get tile cache directory", e); 060 } 061 return new StringProperty("imagery.generic.loader.cachedir", defPath); 062 } 063 064 @Override 065 public TileLoader makeTileLoader(TileLoaderListener listener, Map<String, String> inputHeaders, long minimumExpiryTime) { 066 Map<String, String> headers = new ConcurrentHashMap<>(); 067 headers.put("User-Agent", Version.getInstance().getFullAgentString()); 068 headers.put("Accept", "text/html, image/png, image/jpeg, image/gif, */*"); 069 if (inputHeaders != null) 070 headers.putAll(inputHeaders); 071 072 return getLoader(listener, cache, 073 new TileJobOptions( 074 (int) TimeUnit.SECONDS.toMillis(Config.getPref().getInt("socket.timeout.connect", 15)), 075 (int) TimeUnit.SECONDS.toMillis(Config.getPref().getInt("socket.timeout.read", 30)), 076 headers, 077 minimumExpiryTime 078 ) 079 ); 080 } 081 082 protected TileLoader getLoader(TileLoaderListener listener, ICacheAccess<String, BufferedImageCacheEntry> cache, 083 TileJobOptions options) { 084 try { 085 return tileLoaderConstructor.newInstance( 086 listener, 087 cache, 088 options 089 ); 090 } catch (IllegalArgumentException e) { 091 Logging.warn(e); 092 throw e; 093 } catch (ReflectiveOperationException e) { 094 Logging.warn(e); 095 throw new IllegalArgumentException(e); 096 } 097 } 098}