Exemplo n.º 1
0
 /**
  * Check if the resource was changed from previous run. The implementation uses resource content
  * digest (hash) to check for change.
  *
  * @param resource the {@link Resource} to check.
  * @return true if the resource was changed.
  */
 private boolean isChanged(final Resource resource, final String groupName) {
   LOG.debug("Check change for resource {}", resource.getUri());
   try {
     final String uri = resource.getUri();
     // using AtomicBoolean because we need to mutate this variable inside an anonymous class.
     final AtomicBoolean changeDetected =
         new AtomicBoolean(getResourceChangeDetector().checkChangeForGroup(uri, groupName));
     if (!changeDetected.get() && resource.getType() == ResourceType.CSS) {
       final Reader reader = new InputStreamReader(locatorFactory.locate(uri));
       LOG.debug("Check @import directive from {}", resource);
       createCssImportProcessor(changeDetected, groupName)
           .process(resource, reader, new StringWriter());
     }
     return changeDetected.get();
   } catch (final IOException e) {
     LOG.debug(
         "[FAIL] Cannot check {} resource (Exception message: {}). Assuming it is unchanged...",
         resource,
         e.getMessage());
     return false;
   }
 }
 /** {@inheritDoc} */
 @Override
 protected void doContribution(
     final Group group, final ModelAndView modelAndView, final Map<String, Group> additionalGroups)
     throws IOException {
   String bundle = group.getName();
   Map<String, Object> model = modelAndView.getModel();
   StringBuilder buffer = new StringBuilder();
   if (useCache()) {
     buffer.append(script("/bundle/" + bundle + ".js?v=" + version));
   } else {
     List<Resource> candidates = group.getResources();
     List<Resource> resources = new ArrayList<Resource>();
     for (Resource resource : candidates) {
       if (resource.getType() == ResourceType.JS) {
         buffer.append(script(resource.getUri()));
         resources.add(resource);
       }
     }
     model.put(resourcesVarName(), resources);
   }
   // 2. Publish as a model attribute.
   model.put(varName(), buffer.toString());
   logger.trace("Publishing {}:\n{}", varName(), buffer);
 }