process timestamps at build time

pom.xml

@@ -507,14 +507,6 @@
 									<directory>target/generated-sources/wro4j/</directory>
 									<targetPath>static</targetPath>
 								</resource>
-								<resource>
-									<directory>src/main/script/</directory>
-									<includes>
-										<include>*.js</include>
-									</includes>
-									<targetPath>js</targetPath>
-									<filtering>true</filtering>
-								</resource>
 							</webResources>
 						</configuration>
 					</plugin>

src/main/java/com/commafeed/frontend/resources/TimestampProcessor.java

@@ -0,0 +1,29 @@
+package com.commafeed.frontend.resources;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.io.Writer;
+import java.util.Calendar;
+
+import org.apache.commons.io.IOUtils;
+
+import ro.isdc.wro.model.resource.Resource;
+import ro.isdc.wro.model.resource.ResourceType;
+import ro.isdc.wro.model.resource.SupportedResourceType;
+import ro.isdc.wro.model.resource.processor.ResourcePreProcessor;
+
+@SupportedResourceType(ResourceType.JS)
+public class TimestampProcessor implements ResourcePreProcessor {
+
+	private static final String NOW = ""
+			+ Calendar.getInstance().getTimeInMillis();
+
+	@Override
+	public void process(Resource resource, Reader reader, Writer writer)
+			throws IOException {
+		String content = IOUtils.toString(reader);
+		content = content.replace("${timestamp}", NOW);
+		writer.write(content);
+	}
+
+}

src/main/java/com/commafeed/frontend/resources/WroAdditionalProvider.java

@@ -12,13 +12,14 @@ import com.google.api.client.util.Maps;
  * Build-time solution
  *
  */
-public class WroSassProvider implements ProcessorProvider {
+public class WroAdditionalProvider implements ProcessorProvider {
 
 	@Override
 	public Map<String, ResourcePreProcessor> providePreProcessors() {
 		Map<String, ResourcePreProcessor> map = Maps.newHashMap();
 		map.put("sassOnlyProcessor", new SassOnlyProcessor());
 		map.put("sassImport", new SassImportProcessor());
+		map.put("timestamp", new TimestampProcessor());
 		return map;
 	}
 

src/main/java/com/commafeed/frontend/resources/WroManagerFactory.java

@@ -15,6 +15,7 @@ public class WroManagerFactory extends ConfigurableWroManagerFactory {
 	protected void contributePreProcessors(Map<String, ResourcePreProcessor> map) {
 		map.put("sassOnlyProcessor", new SassOnlyProcessor());
 		map.put("sassImport", new SassImportProcessor());
+		map.put("timestamp", new TimestampProcessor());
 	}
 
 }

src/main/resources/META-INF/services/ro.isdc.wro.model.resource.processor.support.ProcessorProvider

@@ -1 +1 @@
-com.commafeed.frontend.resources.WroSassProvider
+com.commafeed.frontend.resources.WroAdditionalProvider

src/main/webapp/WEB-INF/wro.properties

@@ -10,7 +10,7 @@ jmxEnabled=false
 managerFactoryClassName=com.commafeed.frontend.resources.WroManagerFactory
 
 #List of preProcessors
-preProcessors=cssUrlRewriting,sassImport,semicolonAppender,googleClosureSimple,sassOnlyProcessor,cssMin
+preProcessors=timestamp,cssUrlRewriting,sassImport,semicolonAppender,googleClosureSimple,sassOnlyProcessor,cssMin
 #List of postProcessors
 postProcessors=