Cache templates.

diff --git a/src/main/java/net/pterodactylus/sone/web/WebInterface.java b/src/main/java/net/pterodactylus/sone/web/WebInterface.java
index 14c2c09..dbba1dd 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/web/WebInterface.java
+++ b/src/main/java/net/pterodactylus/sone/web/WebInterface.java
@@ -84,6 +84,12 @@ import net.pterodactylus.sone.web.ajax.UntrustAjaxPage;
 import net.pterodactylus.sone.web.page.PageToadlet;
 import net.pterodactylus.sone.web.page.PageToadletFactory;
 import net.pterodactylus.sone.web.page.StaticPage;
+import net.pterodactylus.util.cache.Cache;
+import net.pterodactylus.util.cache.CacheException;
+import net.pterodactylus.util.cache.CacheItem;
+import net.pterodactylus.util.cache.DefaultCacheItem;
+import net.pterodactylus.util.cache.MemoryCache;
+import net.pterodactylus.util.cache.ValueRetriever;
 import net.pterodactylus.util.logging.Logging;
 import net.pterodactylus.util.notify.Notification;
 import net.pterodactylus.util.notify.NotificationManager;
@@ -768,12 +774,44 @@ public class WebInterface implements CoreListener {
         */
        private class ClassPathTemplateProvider implements Provider {
 
+               /** Cache for templates. */
+               private final Cache<String, Template> templateCache = new MemoryCache<String, Template>(new ValueRetriever<String, Template>() {
+
+                       @Override
+                       @SuppressWarnings("synthetic-access")
+                       public CacheItem<Template> retrieve(String key) throws CacheException {
+                               Template template = findTemplate(key);
+                               if (template != null) {
+                                       return new DefaultCacheItem<Template>(template);
+                               }
+                               return null;
+                       }
+               });
+
                /**
                 * {@inheritDoc}
                 */
                @Override
                @SuppressWarnings("synthetic-access")
                public Template getTemplate(TemplateContext templateContext, String templateName) {
+                       try {
+                               return templateCache.get(templateName);
+                       } catch (CacheException ce1) {
+                               logger.log(Level.WARNING, "Could not get template for " + templateName + "!", ce1);
+                               return null;
+                       }
+               }
+
+               /**
+                * Locates a template in the class path.
+                *
+                * @param templateName
+                *            The name of the template to load
+                * @return The loaded template, or {@code null} if no template could be
+                *         found
+                */
+               @SuppressWarnings("synthetic-access")
+               private Template findTemplate(String templateName) {
                        Reader templateReader = createReader("/templates/" + templateName);
                        if (templateReader == null) {
                                return null;