Using BerkeleyDB for resized images.

.gitignore

@@ -1,3 +1,5 @@
 target
 cache.properties
 build
+db
+

pom.xml

@@ -108,16 +108,17 @@
       <version>2.4</version>
       <scope>provided</scope>
     </dependency>
-    <dependency>
-      <groupId>net.sf.ehcache</groupId>
-      <artifactId>ehcache</artifactId>
-      <version>1.5.0</version>
-    </dependency>
     <dependency>
       <groupId>log4j</groupId>
       <artifactId>log4j</artifactId>
       <version>1.2.14</version>
     </dependency>
+    <dependency>
+      <groupId>com.sleepycat</groupId>
+      <artifactId>je</artifactId>
+      <version>4.0.92</version>
+    </dependency>
+    <dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.2</version></dependency>
   </dependencies>
   <repositories>
     <repository>
@@ -125,8 +126,14 @@
       <name>forkalsrud.org maven proxy</name>
       <releases><enabled>true</enabled></releases>
       <snapshots><enabled>false</enabled></snapshots>
-      <url>http://www.forkalsrud.org/maven-proxy/repository</url>
+      <url>http://forkalsrud.org:8080/maven-proxy/repository</url>
       <layout>legacy</layout>
     </repository>
+    <repository>
+      <id>oracleReleases</id>
+      <name>Oracle Released Java Packages</name>
+      <url>http://download.oracle.com/maven</url>
+      <layout>default</layout>
+    </repository>
   </repositories>
 </project>

src/org/forkalsrud/album/web/AlbumServlet.java

@@ -4,6 +4,7 @@ import java.io.File;
 import java.io.IOException;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.Properties;
 
 import javax.servlet.RequestDispatcher;
 import javax.servlet.ServletException;
@@ -11,12 +12,9 @@ import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
-import net.sf.ehcache.Cache;
-import net.sf.ehcache.CacheManager;
-import net.sf.ehcache.Element;
-
 import org.apache.commons.logging.LogFactory;
 import org.apache.log4j.PropertyConfigurator;
+import org.forkalsrud.album.db.ThumbnailDatabase;
 import org.forkalsrud.album.exif.DirectoryEntry;
 import org.forkalsrud.album.exif.Entry;
 import org.forkalsrud.album.exif.FileEntry;
@@ -27,38 +25,56 @@ public class AlbumServlet
 {
 	File base;
 	String basePrefix;
-	Cache imageCache;
-	CacheManager cacheManager;
+//	Cache imageCache;
+//	CacheManager cacheManager;
     PictureScaler pictureScaler;
     long lastCacheFlushTime;
+    ThumbnailDatabase db = new ThumbnailDatabase();
 
     @Override
     public void init()
         throws ServletException
     {
+        log4jInit("/log4j.properties");
         System.out.println("in init of Album");
         base = new File(getServletConfig().getInitParameter("base")).getAbsoluteFile();
         basePrefix = "/" + base.getName();
 
-        PropertyConfigurator.configure("log4j.properties");
         LogFactory.getFactory().setAttribute("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.Log4JLogger");
-        cacheManager = CacheManager.create();
-        imageCache = cacheManager.getCache("imageCache");
+
+        String dbDirName = getServletConfig().getInitParameter("dbdir");
+        File dbDir = dbDirName != null ? new File(dbDirName) : new File(System.getProperty("java.io.tmpdir"), "album");
+        dbDir.mkdir();
+        db.init(dbDir);
+//        cacheManager = CacheManager.create();
+//        imageCache = cacheManager.getCache("imageCache");
         pictureScaler = new PictureScaler();
         lastCacheFlushTime = System.currentTimeMillis();
     }
 
+    private void log4jInit(String resource) {
+        try {
+            Properties props = new Properties();
+            props.load(getClass().getResourceAsStream(resource));
+            PropertyConfigurator.configure(props);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
     @Override
     public void destroy() {
-    	imageCache.flush();
-    	cacheManager.shutdown();
+        System.out.println("Shutting down Album");
+        db.destroy();
+//    	imageCache.flush();
+ //   	cacheManager.shutdown();
     }
 
     @Override
     public void doGet(HttpServletRequest req, HttpServletResponse res)
         throws ServletException, IOException
     {
-        if (req.getParameter("cacheFlush") != null) imageCache.flush();
+//        if (req.getParameter("cacheFlush") != null) imageCache.flush();
 
         req.setAttribute("assets", req.getContextPath() + "/assets");
         req.setAttribute("req", req);
@@ -166,28 +182,32 @@ public class AlbumServlet
 
         String key = file.getPath() + ":" + size;
 
-        CachedImage cimg = null;
-        Element element = imageCache.get(key);
-        if (element != null) {
-            cimg = (CachedImage) element.getObjectValue();
+        CachedImage cimg = db.load(key);
+//        Element element = imageCache.get(key);
+//        if (element != null) {
+//            cimg = (CachedImage) element.getObjectValue();
+        if (cimg != null) {
             if (cimg.lastModified == file.lastModified()) {
                 System.out.println("cache hit on " + key);
             } else {
                 System.out.println("             " + key + " has changed so cache entry wil be refreshed");
-                imageCache.remove(key);
+                // imageCache.remove(key);
                 cimg = null;
             }
         }
         if (cimg == null) {
 //        	try {
         		cimg = pictureScaler.scalePicture(file, thumbnail, size);
-        		imageCache.put(new Element(key, cimg));
+        		db.store(key, cimg);
+//        		imageCache.put(new Element(key, cimg));
+        		/*
         		long millisSinceLastFlush = System.currentTimeMillis() - lastCacheFlushTime;
         		if (millisSinceLastFlush > 10 * 60 * 1000L) {
         		    imageCache.flush();
         		    lastCacheFlushTime = System.currentTimeMillis();
         		}
-        		System.out.println("             " + key + " added to the cache with size " + cimg.bits.length + " -- now " + imageCache.getSize() + " entries");
+        		*/
+        		System.out.println("             " + key + " added to the cache with size " + cimg.bits.length + " -- now " + db.size() + " entries");
 //        	} catch (TimeoutException e) {
 //        		res.setStatus(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
 //        		return;

src/org/forkalsrud/album/web/PictureScaler.java

@@ -171,6 +171,7 @@ public class PictureScaler {
 		reader.setInput(iis, true);
 		ImageReadParam param = reader.getDefaultReadParam();
 		BufferedImage img = reader.read(0, param);
+		iis.close();
 
         // The orientation is about flipping and rotating.  Here is what an 'F' looks like
         // on pictures with each orientation.

webapp/WEB-INF/web.xml

@@ -19,6 +19,10 @@
 			<param-name>base</param-name>
 			<param-value>photos</param-value>
 		</init-param>
+        <init-param>
+            <param-name>dbdir</param-name>
+            <param-value>db</param-value>
+        </init-param>
 	</servlet>
 
     <servlet>