How to use com.atlassian.plugin.servlet

  private DownloadStrategy findStrategy(String url) {
    for (final DownloadStrategy downloadStrategy : getDownloadStrategies()) {
      if (downloadStrategy.matches(url)) {
        return downloadStrategy;
      }
    }
    return null;
  }
}

/**
 * @return content type for given path.
 */
public String getContentType(String path) {
  return contentTypeResolver.getContentType(path);
}

  /**
   * Sets caching headers with private cache control. Applications should call this method from urlrewrite.xml to
   * decorate urls like <code>/sp/{build num}/.../_/resourceurl</code>.
   *
   * @see <a href="http://tuckey.org/urlrewrite/manual/2.6/">http://tuckey.org/urlrewrite/manual/2.6/</a>
   */
  public static void addPrivateCachingHeaders(final HttpServletRequest httpServletRequest, final HttpServletResponse httpServletResponse) {
    addCachingHeaders(httpServletRequest, httpServletResponse, "private");
  }
}

public void serveFile(final HttpServletRequest request, final HttpServletResponse response) throws DownloadException {
  for (final DownloadStrategy strategy : strategies.values()) {
    if (strategy.matches(request.getRequestURI().toLowerCase())) {
      strategy.serveFile(request, response);
      return;
    }
  }
  throw new DownloadException(
      "Found plugin download strategy during matching but not when trying to serve. Enable debug logging for more information.");
}

  public String getContentType() {
    return originalResource.getContentType();
  }
}

public boolean isResourceModified(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
  return originalResource.isResourceModified(httpServletRequest, httpServletResponse);
}

public void streamResource(final OutputStream out) throws DownloadException {
  final InputStream resourceStream = getResourceAsStreamViaMinificationStrategy();
  if (resourceStream == null) {
    log.warn("Resource not found: {}", this);
    return;
  }
  streamResource(resourceStream, out);
}

  @Override
  public SourceMap writeTo(OutputStream out, boolean isSourceMapEnabled) {
    try {
      downloadableResource.streamResource(out);
    }
    catch (DownloadException e)
    {
      Support.LOGGER.debug("Error while serving file: DownloadException");
    }
    return sourceMap;
  }
};

@Override
public String toString() {
  final String pluginKey = plugin != null ? plugin.getKey() : "";
  return "Resource: " + pluginKey + " " + getLocation() + " (" + getContentType() + ")";
}

@Override
public void addServlet(Plugin plugin, String servletName, HttpServlet servlet, ServletContext servletContext) {
  delegateModuleManager.addServlet(plugin, servletName, servlet, servletContext);
}

@Override
public HttpServlet getServlet(String path, ServletConfig servletConfig) throws ServletException {
  return delegateModuleManager.getServlet(path, servletConfig);
}

@Override
public void removeServletModule(ServletModuleDescriptor descriptor) {
  delegateModuleManager.removeServletModule(descriptor);
}

@Override
public void addServletModule(ServletModuleDescriptor descriptor) {
  delegateModuleManager.addServletModule(descriptor);
}

@Override
protected InputStream getResourceAsStream(final String resourceLocation) {
  String fixedResourceLocation = fixResourceLocation(resourceLocation);
  return servletContext.getResourceAsStream(fixedResourceLocation);
}

@Override
public Iterable<Filter> getFilters(FilterLocation location, String pathInfo, FilterConfig filterConfig, DispatcherType dispatcherType) {
  return delegateModuleManager.getFilters(location, StringUtils.removeStart(pathInfo, path), filterConfig, dispatcherType);
}

public String getContentType() {
  return originalResource.getContentType();
}

public boolean isResourceModified(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
  return originalResource.isResourceModified(httpServletRequest, httpServletResponse);
}

/**
 * Sets caching headers with public cache control. Applications should call this method from urlrewrite.xml to
 * decorate urls like <code>/s/{build num}/.../_/resourceurl</code>.
 *
 * @see <a href="http://tuckey.org/urlrewrite/manual/2.6/">http://tuckey.org/urlrewrite/manual/2.6/</a>
 */
public static void addPublicCachingHeaders(final HttpServletRequest httpServletRequest, final HttpServletResponse httpServletResponse) {
  addCachingHeaders(httpServletRequest, httpServletResponse, "public");
}

@Override
public void addServlet(Plugin plugin, String servletName, String className) {
  delegateModuleManager.addServlet(plugin, servletName, className);
}

/**
 * Adapter, turns DownloadableResource into Content.
 */
public static Content asContent(final DownloadableResource downloadableResource, final SourceMap sourceMap,
                boolean isTransformed) {
  return new ContentImpl(downloadableResource.getContentType(), isTransformed) {
    @Override
    public SourceMap writeTo(OutputStream out, boolean isSourceMapEnabled) {
      try {
        downloadableResource.streamResource(out);
      }
      catch (DownloadException e)
      {
        Support.LOGGER.debug("Error while serving file: DownloadException");
      }
      return sourceMap;
    }
  };
}